./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrpbrk-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrpbrk-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f4570e8b350d1c6ecce62e4659f1c324ac9794563382f5f25c3525057748138 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:22:40,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:22:40,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:22:40,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:22:40,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:22:40,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:22:40,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:22:40,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:22:40,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:22:40,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:22:40,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:22:40,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:22:40,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:22:40,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:22:40,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:22:40,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:22:40,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:22:40,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:22:40,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:22:40,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:22:40,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:22:40,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:22:40,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:22:40,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:22:40,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:22:40,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:22:40,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:22:40,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:22:40,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:22:40,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:22:40,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:22:40,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:22:40,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:22:40,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:22:40,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:22:40,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:22:40,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:22:40,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:22:40,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:22:40,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:22:40,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:22:40,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 19:22:40,807 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:22:40,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:22:40,807 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:22:40,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:22:40,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:22:40,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:22:40,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:22:40,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:22:40,808 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:22:40,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:22:40,809 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:22:40,809 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 19:22:40,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:22:40,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:22:40,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:22:40,809 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 19:22:40,809 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 19:22:40,809 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 19:22:40,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:22:40,810 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 19:22:40,810 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:22:40,810 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:22:40,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:22:40,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:22:40,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:22:40,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:22:40,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:22:40,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:22:40,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:22:40,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:22:40,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:22:40,811 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_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f4570e8b350d1c6ecce62e4659f1c324ac9794563382f5f25c3525057748138 [2021-12-06 19:22:40,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:22:40,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:22:41,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:22:41,002 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:22:41,002 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:22:41,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-memsafety/cstrpbrk-alloca-2.i [2021-12-06 19:22:41,049 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/data/af4f75cc2/4d7c62130220478ba21b5745b0a6592d/FLAG3896f4f83 [2021-12-06 19:22:41,486 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:22:41,487 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/sv-benchmarks/c/array-memsafety/cstrpbrk-alloca-2.i [2021-12-06 19:22:41,496 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/data/af4f75cc2/4d7c62130220478ba21b5745b0a6592d/FLAG3896f4f83 [2021-12-06 19:22:41,506 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/data/af4f75cc2/4d7c62130220478ba21b5745b0a6592d [2021-12-06 19:22:41,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:22:41,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:22:41,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:22:41,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:22:41,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:22:41,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:22:41" (1/1) ... [2021-12-06 19:22:41,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee0bc42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:41, skipping insertion in model container [2021-12-06 19:22:41,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:22:41" (1/1) ... [2021-12-06 19:22:41,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:22:41,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:22:41,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:22:41,782 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:22:41,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:22:41,843 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:22:41,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:41 WrapperNode [2021-12-06 19:22:41,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:22:41,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:22:41,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:22:41,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:22:41,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:41" (1/1) ... [2021-12-06 19:22:41,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:41" (1/1) ... [2021-12-06 19:22:41,887 INFO L137 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 101 [2021-12-06 19:22:41,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:22:41,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:22:41,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:22:41,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:22:41,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:41" (1/1) ... [2021-12-06 19:22:41,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:41" (1/1) ... [2021-12-06 19:22:41,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:41" (1/1) ... [2021-12-06 19:22:41,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:41" (1/1) ... [2021-12-06 19:22:41,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:41" (1/1) ... [2021-12-06 19:22:41,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:41" (1/1) ... [2021-12-06 19:22:41,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:41" (1/1) ... [2021-12-06 19:22:41,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:22:41,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:22:41,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:22:41,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:22:41,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:41" (1/1) ... [2021-12-06 19:22:41,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:22:41,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:22:41,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:22:41,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:22:41,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 19:22:41,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 19:22:41,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 19:22:41,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:22:41,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:22:41,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:22:42,050 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:22:42,051 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:22:42,190 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:22:42,195 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:22:42,195 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-06 19:22:42,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:22:42 BoogieIcfgContainer [2021-12-06 19:22:42,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:22:42,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:22:42,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:22:42,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:22:42,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:22:41" (1/3) ... [2021-12-06 19:22:42,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39fbe918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:22:42, skipping insertion in model container [2021-12-06 19:22:42,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:41" (2/3) ... [2021-12-06 19:22:42,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39fbe918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:22:42, skipping insertion in model container [2021-12-06 19:22:42,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:22:42" (3/3) ... [2021-12-06 19:22:42,203 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrpbrk-alloca-2.i [2021-12-06 19:22:42,207 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:22:42,207 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-12-06 19:22:42,240 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:22:42,245 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:22:42,245 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-12-06 19:22:42,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 34 states have (on average 1.911764705882353) internal successors, (65), 53 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:42,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 19:22:42,261 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:42,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:42,262 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:42,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:42,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2021-12-06 19:22:42,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:42,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250698910] [2021-12-06 19:22:42,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:42,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:42,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:42,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:42,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250698910] [2021-12-06 19:22:42,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250698910] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:42,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:42,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:22:42,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511171647] [2021-12-06 19:22:42,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:42,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:22:42,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:42,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:22:42,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:22:42,462 INFO L87 Difference]: Start difference. First operand has 54 states, 34 states have (on average 1.911764705882353) internal successors, (65), 53 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:42,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:42,510 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2021-12-06 19:22:42,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:22:42,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-12-06 19:22:42,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:42,521 INFO L225 Difference]: With dead ends: 100 [2021-12-06 19:22:42,521 INFO L226 Difference]: Without dead ends: 96 [2021-12-06 19:22:42,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:22:42,527 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 50 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:42,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 160 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:22:42,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-06 19:22:42,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 55. [2021-12-06 19:22:42,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.75) internal successors, (63), 54 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-12-06 19:22:42,556 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 7 [2021-12-06 19:22:42,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:42,556 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-12-06 19:22:42,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:42,556 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-12-06 19:22:42,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 19:22:42,557 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:42,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:42,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:22:42,557 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:42,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:42,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876138, now seen corresponding path program 1 times [2021-12-06 19:22:42,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:42,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484545003] [2021-12-06 19:22:42,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:42,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:42,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:42,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:42,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484545003] [2021-12-06 19:22:42,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484545003] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:42,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:42,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:22:42,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011505345] [2021-12-06 19:22:42,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:42,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:22:42,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:42,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:22:42,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:22:42,608 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:42,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:42,638 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2021-12-06 19:22:42,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:22:42,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-12-06 19:22:42,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:42,639 INFO L225 Difference]: With dead ends: 53 [2021-12-06 19:22:42,640 INFO L226 Difference]: Without dead ends: 53 [2021-12-06 19:22:42,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:22:42,641 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 47 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:42,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 41 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:22:42,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-06 19:22:42,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-12-06 19:22:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 52 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:42,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-12-06 19:22:42,646 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 7 [2021-12-06 19:22:42,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:42,647 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-12-06 19:22:42,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:42,647 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-12-06 19:22:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 19:22:42,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:42,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:42,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:22:42,648 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:42,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:42,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2021-12-06 19:22:42,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:42,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167043521] [2021-12-06 19:22:42,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:42,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:42,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:42,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:42,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167043521] [2021-12-06 19:22:42,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167043521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:42,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:42,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:22:42,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654925812] [2021-12-06 19:22:42,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:42,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:22:42,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:42,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:22:42,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:22:42,709 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:42,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:42,781 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2021-12-06 19:22:42,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:22:42,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-12-06 19:22:42,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:42,782 INFO L225 Difference]: With dead ends: 97 [2021-12-06 19:22:42,782 INFO L226 Difference]: Without dead ends: 97 [2021-12-06 19:22:42,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:22:42,784 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 50 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:42,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 100 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:22:42,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-06 19:22:42,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 55. [2021-12-06 19:22:42,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 38 states have (on average 1.6842105263157894) internal successors, (64), 54 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:42,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2021-12-06 19:22:42,792 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 7 [2021-12-06 19:22:42,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:42,792 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2021-12-06 19:22:42,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:42,792 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2021-12-06 19:22:42,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 19:22:42,793 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:42,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:42,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:22:42,793 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:42,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:42,794 INFO L85 PathProgramCache]: Analyzing trace with hash -533876960, now seen corresponding path program 1 times [2021-12-06 19:22:42,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:42,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787692984] [2021-12-06 19:22:42,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:42,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:42,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:42,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:42,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787692984] [2021-12-06 19:22:42,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787692984] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:42,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:42,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:22:42,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480725470] [2021-12-06 19:22:42,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:42,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:22:42,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:42,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:22:42,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:22:42,854 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:42,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:42,880 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2021-12-06 19:22:42,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:22:42,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-12-06 19:22:42,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:42,882 INFO L225 Difference]: With dead ends: 54 [2021-12-06 19:22:42,882 INFO L226 Difference]: Without dead ends: 54 [2021-12-06 19:22:42,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:22:42,884 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 51 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 39 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 [2021-12-06 19:22:42,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 39 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:22:42,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-12-06 19:22:42,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-12-06 19:22:42,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2021-12-06 19:22:42,890 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 9 [2021-12-06 19:22:42,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:42,891 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2021-12-06 19:22:42,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:42,891 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2021-12-06 19:22:42,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 19:22:42,891 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:42,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:42,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:22:42,892 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:42,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:42,893 INFO L85 PathProgramCache]: Analyzing trace with hash -533876908, now seen corresponding path program 1 times [2021-12-06 19:22:42,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:42,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750784842] [2021-12-06 19:22:42,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:42,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:42,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:42,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:42,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750784842] [2021-12-06 19:22:42,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750784842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:42,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:42,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:22:42,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989299045] [2021-12-06 19:22:42,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:42,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:22:42,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:42,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:22:42,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:22:42,927 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:42,945 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2021-12-06 19:22:42,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:22:42,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-12-06 19:22:42,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:42,946 INFO L225 Difference]: With dead ends: 98 [2021-12-06 19:22:42,946 INFO L226 Difference]: Without dead ends: 98 [2021-12-06 19:22:42,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:22:42,947 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 42 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:42,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 144 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:22:42,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-06 19:22:42,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 65. [2021-12-06 19:22:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 49 states have (on average 1.5714285714285714) internal successors, (77), 64 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:42,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2021-12-06 19:22:42,953 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 9 [2021-12-06 19:22:42,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:42,953 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2021-12-06 19:22:42,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:42,953 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2021-12-06 19:22:42,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 19:22:42,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:42,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:42,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:22:42,954 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:42,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:42,954 INFO L85 PathProgramCache]: Analyzing trace with hash -476618606, now seen corresponding path program 1 times [2021-12-06 19:22:42,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:42,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130910425] [2021-12-06 19:22:42,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:42,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:42,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:42,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130910425] [2021-12-06 19:22:42,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130910425] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:42,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:42,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:22:42,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147676009] [2021-12-06 19:22:42,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:42,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:22:42,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:42,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:22:42,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:22:42,978 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:42,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:42,997 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2021-12-06 19:22:42,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:22:42,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-12-06 19:22:42,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:42,998 INFO L225 Difference]: With dead ends: 63 [2021-12-06 19:22:42,998 INFO L226 Difference]: Without dead ends: 63 [2021-12-06 19:22:42,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:22:42,999 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 42 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:43,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 40 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:22:43,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-06 19:22:43,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-12-06 19:22:43,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 49 states have (on average 1.530612244897959) internal successors, (75), 62 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:43,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2021-12-06 19:22:43,006 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 9 [2021-12-06 19:22:43,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:43,006 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2021-12-06 19:22:43,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:43,006 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2021-12-06 19:22:43,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 19:22:43,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:43,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:43,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:22:43,007 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:43,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:43,012 INFO L85 PathProgramCache]: Analyzing trace with hash -476618605, now seen corresponding path program 1 times [2021-12-06 19:22:43,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:43,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801282918] [2021-12-06 19:22:43,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:43,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:43,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:43,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801282918] [2021-12-06 19:22:43,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801282918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:43,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:43,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:22:43,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467416968] [2021-12-06 19:22:43,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:43,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:22:43,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:43,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:22:43,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:22:43,066 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:43,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:43,122 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2021-12-06 19:22:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:22:43,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-12-06 19:22:43,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:43,123 INFO L225 Difference]: With dead ends: 98 [2021-12-06 19:22:43,123 INFO L226 Difference]: Without dead ends: 98 [2021-12-06 19:22:43,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:22:43,124 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 86 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:43,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 94 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:22:43,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-06 19:22:43,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 65. [2021-12-06 19:22:43,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 64 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:43,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2021-12-06 19:22:43,129 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 9 [2021-12-06 19:22:43,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:43,130 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2021-12-06 19:22:43,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:43,130 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2021-12-06 19:22:43,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 19:22:43,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:43,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:43,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 19:22:43,131 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:43,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:43,132 INFO L85 PathProgramCache]: Analyzing trace with hash 629683418, now seen corresponding path program 1 times [2021-12-06 19:22:43,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:43,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967057461] [2021-12-06 19:22:43,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:43,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:43,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:43,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967057461] [2021-12-06 19:22:43,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967057461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:43,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:43,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:22:43,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993356508] [2021-12-06 19:22:43,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:43,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:22:43,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:43,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:22:43,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:22:43,172 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:43,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:43,195 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2021-12-06 19:22:43,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:22:43,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-06 19:22:43,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:43,196 INFO L225 Difference]: With dead ends: 64 [2021-12-06 19:22:43,196 INFO L226 Difference]: Without dead ends: 64 [2021-12-06 19:22:43,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:22:43,197 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 47 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:43,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 39 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:22:43,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-06 19:22:43,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-12-06 19:22:43,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 51 states have (on average 1.5098039215686274) internal successors, (77), 63 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:43,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2021-12-06 19:22:43,201 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 10 [2021-12-06 19:22:43,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:43,201 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2021-12-06 19:22:43,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:43,202 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2021-12-06 19:22:43,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 19:22:43,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:43,202 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:43,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 19:22:43,202 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:43,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:43,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2021-12-06 19:22:43,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:43,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735869003] [2021-12-06 19:22:43,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:43,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:43,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:43,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:43,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735869003] [2021-12-06 19:22:43,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735869003] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:22:43,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031093767] [2021-12-06 19:22:43,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:43,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:43,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:22:43,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:22:43,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:22:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:43,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 19:22:43,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:22:43,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:22:43,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 19:22:43,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:22:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:43,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:22:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:43,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031093767] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:22:43,590 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:22:43,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-12-06 19:22:43,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098541615] [2021-12-06 19:22:43,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:22:43,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:22:43,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:43,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:22:43,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:22:43,592 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:43,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:43,725 INFO L93 Difference]: Finished difference Result 149 states and 173 transitions. [2021-12-06 19:22:43,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:22:43,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 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 11 [2021-12-06 19:22:43,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:43,726 INFO L225 Difference]: With dead ends: 149 [2021-12-06 19:22:43,727 INFO L226 Difference]: Without dead ends: 149 [2021-12-06 19:22:43,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:22:43,727 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 248 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:43,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 278 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:22:43,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-12-06 19:22:43,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 59. [2021-12-06 19:22:43,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 58 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:43,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2021-12-06 19:22:43,733 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 11 [2021-12-06 19:22:43,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:43,734 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2021-12-06 19:22:43,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:43,734 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2021-12-06 19:22:43,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 19:22:43,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:43,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:43,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:22:43,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-06 19:22:43,936 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:43,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:43,936 INFO L85 PathProgramCache]: Analyzing trace with hash -464624131, now seen corresponding path program 1 times [2021-12-06 19:22:43,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:43,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630327974] [2021-12-06 19:22:43,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:43,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:43,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:43,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630327974] [2021-12-06 19:22:43,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630327974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:43,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:43,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:22:43,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274596521] [2021-12-06 19:22:43,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:43,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:22:43,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:43,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:22:43,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:22:43,963 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:43,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:43,984 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2021-12-06 19:22:43,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:22:43,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-12-06 19:22:43,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:43,985 INFO L225 Difference]: With dead ends: 57 [2021-12-06 19:22:43,985 INFO L226 Difference]: Without dead ends: 57 [2021-12-06 19:22:43,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:22:43,985 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 63 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:43,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 50 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:22:43,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-06 19:22:43,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-06 19:22:43,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 47 states have (on average 1.425531914893617) internal successors, (67), 56 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:43,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2021-12-06 19:22:43,989 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 12 [2021-12-06 19:22:43,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:43,990 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2021-12-06 19:22:43,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:43,990 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2021-12-06 19:22:43,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 19:22:43,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:43,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:43,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 19:22:43,991 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:43,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:43,991 INFO L85 PathProgramCache]: Analyzing trace with hash -464624130, now seen corresponding path program 1 times [2021-12-06 19:22:43,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:43,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450680750] [2021-12-06 19:22:43,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:43,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:44,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:44,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450680750] [2021-12-06 19:22:44,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450680750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:44,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:44,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:22:44,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369724537] [2021-12-06 19:22:44,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:44,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:22:44,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:44,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:22:44,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:22:44,036 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:44,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:44,082 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2021-12-06 19:22:44,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:22:44,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-12-06 19:22:44,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:44,083 INFO L225 Difference]: With dead ends: 80 [2021-12-06 19:22:44,083 INFO L226 Difference]: Without dead ends: 80 [2021-12-06 19:22:44,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:22:44,084 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 161 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:44,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 67 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:22:44,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-06 19:22:44,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-12-06 19:22:44,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 50 states have (on average 1.42) internal successors, (71), 59 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:44,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2021-12-06 19:22:44,086 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 12 [2021-12-06 19:22:44,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:44,087 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2021-12-06 19:22:44,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:44,087 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2021-12-06 19:22:44,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 19:22:44,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:44,087 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:44,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 19:22:44,087 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:44,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:44,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1862804906, now seen corresponding path program 1 times [2021-12-06 19:22:44,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:44,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688780530] [2021-12-06 19:22:44,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:44,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:44,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:44,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688780530] [2021-12-06 19:22:44,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688780530] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:22:44,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922112560] [2021-12-06 19:22:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:44,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:44,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:22:44,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:22:44,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:22:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:44,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 19:22:44,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:22:44,193 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:22:44,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:22:44,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:44,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:22:44,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:44,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922112560] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:22:44,378 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:22:44,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2021-12-06 19:22:44,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590662150] [2021-12-06 19:22:44,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:22:44,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 19:22:44,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:44,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 19:22:44,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:22:44,379 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 13 states, 12 states have (on average 2.5) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:44,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:44,484 INFO L93 Difference]: Finished difference Result 124 states and 144 transitions. [2021-12-06 19:22:44,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:22:44,485 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 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 13 [2021-12-06 19:22:44,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:44,485 INFO L225 Difference]: With dead ends: 124 [2021-12-06 19:22:44,485 INFO L226 Difference]: Without dead ends: 124 [2021-12-06 19:22:44,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:22:44,486 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 319 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:44,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 237 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:22:44,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-06 19:22:44,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 57. [2021-12-06 19:22:44,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 56 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:44,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2021-12-06 19:22:44,489 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 13 [2021-12-06 19:22:44,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:44,489 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2021-12-06 19:22:44,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:44,489 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2021-12-06 19:22:44,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 19:22:44,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:44,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:44,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 19:22:44,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:44,692 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:44,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:44,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1433224404, now seen corresponding path program 1 times [2021-12-06 19:22:44,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:44,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993594416] [2021-12-06 19:22:44,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:44,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:44,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:44,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993594416] [2021-12-06 19:22:44,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993594416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:44,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:44,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:22:44,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029362624] [2021-12-06 19:22:44,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:44,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:22:44,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:44,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:22:44,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:22:44,858 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:44,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:44,877 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2021-12-06 19:22:44,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:22:44,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-12-06 19:22:44,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:44,878 INFO L225 Difference]: With dead ends: 56 [2021-12-06 19:22:44,878 INFO L226 Difference]: Without dead ends: 53 [2021-12-06 19:22:44,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:22:44,879 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 33 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:44,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 66 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:22:44,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-06 19:22:44,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-12-06 19:22:44,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 52 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:44,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-12-06 19:22:44,882 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 16 [2021-12-06 19:22:44,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:44,882 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-12-06 19:22:44,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:44,882 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-12-06 19:22:44,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 19:22:44,883 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:44,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:44,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 19:22:44,883 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:44,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:44,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1433207485, now seen corresponding path program 1 times [2021-12-06 19:22:44,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:44,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992297202] [2021-12-06 19:22:44,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:44,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:44,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:44,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:44,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992297202] [2021-12-06 19:22:44,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992297202] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:44,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:44,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:22:44,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491112776] [2021-12-06 19:22:44,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:44,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:22:44,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:44,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:22:44,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:22:44,914 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:44,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:44,953 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2021-12-06 19:22:44,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:22:44,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-12-06 19:22:44,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:44,954 INFO L225 Difference]: With dead ends: 50 [2021-12-06 19:22:44,954 INFO L226 Difference]: Without dead ends: 50 [2021-12-06 19:22:44,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:22:44,955 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 66 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:44,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 56 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:22:44,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-06 19:22:44,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-12-06 19:22:44,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.288888888888889) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:44,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2021-12-06 19:22:44,958 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 16 [2021-12-06 19:22:44,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:44,958 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2021-12-06 19:22:44,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:44,959 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2021-12-06 19:22:44,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 19:22:44,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:44,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:44,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 19:22:44,959 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:44,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:44,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1433207484, now seen corresponding path program 1 times [2021-12-06 19:22:44,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:44,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354487113] [2021-12-06 19:22:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:44,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:45,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:45,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:45,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354487113] [2021-12-06 19:22:45,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354487113] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:45,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:45,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:22:45,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481547050] [2021-12-06 19:22:45,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:45,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:22:45,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:45,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:22:45,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:22:45,014 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:45,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:45,059 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2021-12-06 19:22:45,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:22:45,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-12-06 19:22:45,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:45,060 INFO L225 Difference]: With dead ends: 62 [2021-12-06 19:22:45,060 INFO L226 Difference]: Without dead ends: 62 [2021-12-06 19:22:45,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:22:45,061 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 133 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:45,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 62 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:22:45,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-06 19:22:45,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2021-12-06 19:22:45,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 56 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:45,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2021-12-06 19:22:45,065 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 16 [2021-12-06 19:22:45,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:45,065 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2021-12-06 19:22:45,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:45,065 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2021-12-06 19:22:45,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 19:22:45,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:45,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:45,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 19:22:45,066 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:45,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:45,067 INFO L85 PathProgramCache]: Analyzing trace with hash 43271131, now seen corresponding path program 1 times [2021-12-06 19:22:45,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:45,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845454886] [2021-12-06 19:22:45,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:45,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:45,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:45,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845454886] [2021-12-06 19:22:45,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845454886] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:45,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:45,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:22:45,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496311875] [2021-12-06 19:22:45,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:45,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:22:45,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:45,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:22:45,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:22:45,091 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:45,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:45,096 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2021-12-06 19:22:45,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:22:45,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-12-06 19:22:45,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:45,097 INFO L225 Difference]: With dead ends: 59 [2021-12-06 19:22:45,097 INFO L226 Difference]: Without dead ends: 59 [2021-12-06 19:22:45,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:22:45,098 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:45,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:22:45,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-06 19:22:45,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-12-06 19:22:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 58 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:45,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2021-12-06 19:22:45,101 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 20 [2021-12-06 19:22:45,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:45,101 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2021-12-06 19:22:45,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:45,101 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2021-12-06 19:22:45,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 19:22:45,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:45,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:45,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 19:22:45,102 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:45,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:45,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1371974184, now seen corresponding path program 1 times [2021-12-06 19:22:45,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:45,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675486744] [2021-12-06 19:22:45,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:45,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:45,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:45,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:45,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675486744] [2021-12-06 19:22:45,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675486744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:45,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:45,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:22:45,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267259984] [2021-12-06 19:22:45,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:45,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:22:45,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:45,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:22:45,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:22:45,189 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:45,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:45,238 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2021-12-06 19:22:45,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:22:45,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-12-06 19:22:45,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:45,239 INFO L225 Difference]: With dead ends: 71 [2021-12-06 19:22:45,239 INFO L226 Difference]: Without dead ends: 54 [2021-12-06 19:22:45,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:22:45,240 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 22 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:45,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 157 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:22:45,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-12-06 19:22:45,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-12-06 19:22:45,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 53 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:45,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2021-12-06 19:22:45,243 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 22 [2021-12-06 19:22:45,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:45,243 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2021-12-06 19:22:45,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:45,243 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2021-12-06 19:22:45,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 19:22:45,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:45,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:45,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 19:22:45,244 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:45,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:45,245 INFO L85 PathProgramCache]: Analyzing trace with hash 2105344662, now seen corresponding path program 1 times [2021-12-06 19:22:45,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:45,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900418527] [2021-12-06 19:22:45,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:45,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:45,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:45,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900418527] [2021-12-06 19:22:45,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900418527] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:45,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:45,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:22:45,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890045644] [2021-12-06 19:22:45,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:45,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:22:45,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:45,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:22:45,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:22:45,350 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:45,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:45,413 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2021-12-06 19:22:45,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:22:45,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-12-06 19:22:45,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:45,414 INFO L225 Difference]: With dead ends: 74 [2021-12-06 19:22:45,414 INFO L226 Difference]: Without dead ends: 62 [2021-12-06 19:22:45,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:22:45,415 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 58 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:45,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 165 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:22:45,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-06 19:22:45,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2021-12-06 19:22:45,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 55 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:45,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2021-12-06 19:22:45,418 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 22 [2021-12-06 19:22:45,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:45,418 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2021-12-06 19:22:45,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:45,418 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2021-12-06 19:22:45,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 19:22:45,419 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:45,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:45,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 19:22:45,419 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:45,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:45,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1877695219, now seen corresponding path program 1 times [2021-12-06 19:22:45,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:45,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927121577] [2021-12-06 19:22:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:45,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:45,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:45,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927121577] [2021-12-06 19:22:45,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927121577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:45,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:45,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:22:45,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321433960] [2021-12-06 19:22:45,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:45,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:22:45,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:45,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:22:45,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:22:45,508 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:45,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:45,600 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2021-12-06 19:22:45,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:22:45,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-12-06 19:22:45,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:45,601 INFO L225 Difference]: With dead ends: 75 [2021-12-06 19:22:45,601 INFO L226 Difference]: Without dead ends: 75 [2021-12-06 19:22:45,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:22:45,602 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 59 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:45,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 217 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:22:45,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-06 19:22:45,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2021-12-06 19:22:45,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 72 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2021-12-06 19:22:45,605 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 26 [2021-12-06 19:22:45,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:45,605 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2021-12-06 19:22:45,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:45,605 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2021-12-06 19:22:45,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 19:22:45,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:45,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:45,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 19:22:45,606 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:45,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:45,607 INFO L85 PathProgramCache]: Analyzing trace with hash 72256885, now seen corresponding path program 1 times [2021-12-06 19:22:45,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:45,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443326606] [2021-12-06 19:22:45,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:45,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:45,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:45,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443326606] [2021-12-06 19:22:45,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443326606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:45,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:45,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 19:22:45,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615015541] [2021-12-06 19:22:45,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:45,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 19:22:45,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:45,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 19:22:45,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:22:45,737 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:45,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:45,833 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2021-12-06 19:22:45,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:22:45,833 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-12-06 19:22:45,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:45,834 INFO L225 Difference]: With dead ends: 96 [2021-12-06 19:22:45,834 INFO L226 Difference]: Without dead ends: 96 [2021-12-06 19:22:45,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-12-06 19:22:45,835 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 133 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:45,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 172 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:22:45,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-06 19:22:45,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 74. [2021-12-06 19:22:45,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 73 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2021-12-06 19:22:45,837 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 26 [2021-12-06 19:22:45,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:45,838 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2021-12-06 19:22:45,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:45,838 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2021-12-06 19:22:45,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 19:22:45,838 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:45,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:45,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 19:22:45,839 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:45,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:45,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1740534735, now seen corresponding path program 1 times [2021-12-06 19:22:45,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:45,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237694912] [2021-12-06 19:22:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:45,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:45,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:45,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:45,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237694912] [2021-12-06 19:22:45,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237694912] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:45,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:45,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 19:22:45,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569708079] [2021-12-06 19:22:45,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:45,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 19:22:45,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:45,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 19:22:45,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:22:45,901 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:46,004 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2021-12-06 19:22:46,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:22:46,005 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-12-06 19:22:46,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:46,005 INFO L225 Difference]: With dead ends: 75 [2021-12-06 19:22:46,005 INFO L226 Difference]: Without dead ends: 51 [2021-12-06 19:22:46,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:22:46,006 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:46,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 142 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:22:46,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-06 19:22:46,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2021-12-06 19:22:46,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:46,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2021-12-06 19:22:46,008 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 27 [2021-12-06 19:22:46,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:46,008 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2021-12-06 19:22:46,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:46,008 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2021-12-06 19:22:46,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 19:22:46,008 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:46,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:46,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 19:22:46,008 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:46,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:46,009 INFO L85 PathProgramCache]: Analyzing trace with hash -145898734, now seen corresponding path program 1 times [2021-12-06 19:22:46,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:46,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23193765] [2021-12-06 19:22:46,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:46,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:46,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:46,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:46,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23193765] [2021-12-06 19:22:46,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23193765] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:22:46,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245522439] [2021-12-06 19:22:46,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:46,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:46,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:22:46,085 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:22:46,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:22:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:46,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 19:22:46,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:22:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:46,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:22:46,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:22:46,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:46,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245522439] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:22:46,304 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:22:46,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2021-12-06 19:22:46,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641267359] [2021-12-06 19:22:46,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:22:46,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 19:22:46,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:46,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 19:22:46,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-12-06 19:22:46,306 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 21 states, 20 states have (on average 3.4) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:46,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:46,419 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2021-12-06 19:22:46,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:22:46,419 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.4) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-06 19:22:46,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:46,419 INFO L225 Difference]: With dead ends: 69 [2021-12-06 19:22:46,420 INFO L226 Difference]: Without dead ends: 65 [2021-12-06 19:22:46,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2021-12-06 19:22:46,420 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 291 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:46,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 145 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:22:46,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-06 19:22:46,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 45. [2021-12-06 19:22:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-12-06 19:22:46,422 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 30 [2021-12-06 19:22:46,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:46,423 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-12-06 19:22:46,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.4) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:46,423 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-12-06 19:22:46,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 19:22:46,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:46,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:46,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 19:22:46,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:46,625 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:46,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:46,627 INFO L85 PathProgramCache]: Analyzing trace with hash 36573013, now seen corresponding path program 1 times [2021-12-06 19:22:46,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:46,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738260249] [2021-12-06 19:22:46,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:46,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:46,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:46,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:46,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738260249] [2021-12-06 19:22:46,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738260249] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:22:46,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146261024] [2021-12-06 19:22:46,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:46,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:46,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:22:46,768 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:22:46,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 19:22:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:46,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 19:22:46,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:22:46,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:46,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:22:47,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:22:47,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:47,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146261024] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:22:47,023 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:22:47,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2021-12-06 19:22:47,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283677799] [2021-12-06 19:22:47,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:22:47,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 19:22:47,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:47,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 19:22:47,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-12-06 19:22:47,024 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 17 states, 16 states have (on average 4.875) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:47,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:47,119 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2021-12-06 19:22:47,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:22:47,119 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.875) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 19:22:47,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:47,120 INFO L225 Difference]: With dead ends: 86 [2021-12-06 19:22:47,120 INFO L226 Difference]: Without dead ends: 86 [2021-12-06 19:22:47,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2021-12-06 19:22:47,121 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 346 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:47,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 147 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:22:47,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-12-06 19:22:47,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 62. [2021-12-06 19:22:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 1.15) internal successors, (69), 61 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:47,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2021-12-06 19:22:47,124 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 33 [2021-12-06 19:22:47,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:47,125 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2021-12-06 19:22:47,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.875) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2021-12-06 19:22:47,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 19:22:47,125 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:47,125 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:47,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 19:22:47,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:47,327 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:47,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:47,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1001387738, now seen corresponding path program 2 times [2021-12-06 19:22:47,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:47,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601012949] [2021-12-06 19:22:47,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:47,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:47,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:47,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601012949] [2021-12-06 19:22:47,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601012949] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:22:47,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923973206] [2021-12-06 19:22:47,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:22:47,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:47,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:22:47,498 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:22:47,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 19:22:47,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:22:47,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:22:47,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-06 19:22:47,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:22:47,567 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:22:47,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:22:47,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:22:48,158 INFO L354 Elim1Store]: treesize reduction 3, result has 72.7 percent of original size [2021-12-06 19:22:48,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2021-12-06 19:22:48,213 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:48,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:22:48,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:22:48,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:22:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:48,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923973206] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:22:48,750 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:22:48,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 38 [2021-12-06 19:22:48,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809640769] [2021-12-06 19:22:48,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:22:48,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 19:22:48,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:48,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 19:22:48,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 19:22:48,752 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand has 38 states, 38 states have (on average 2.6315789473684212) internal successors, (100), 38 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:49,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:49,748 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2021-12-06 19:22:49,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 19:22:49,748 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.6315789473684212) internal successors, (100), 38 states have internal predecessors, (100), 0 states have call successors, (0), 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 36 [2021-12-06 19:22:49,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:49,750 INFO L225 Difference]: With dead ends: 104 [2021-12-06 19:22:49,750 INFO L226 Difference]: Without dead ends: 101 [2021-12-06 19:22:49,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=365, Invalid=2714, Unknown=1, NotChecked=0, Total=3080 [2021-12-06 19:22:49,752 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 156 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:49,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 453 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 210 Invalid, 0 Unknown, 120 Unchecked, 0.1s Time] [2021-12-06 19:22:49,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-06 19:22:49,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2021-12-06 19:22:49,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 89 states have (on average 1.1348314606741574) internal successors, (101), 90 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2021-12-06 19:22:49,757 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 36 [2021-12-06 19:22:49,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:49,757 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2021-12-06 19:22:49,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6315789473684212) internal successors, (100), 38 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:49,757 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2021-12-06 19:22:49,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 19:22:49,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:49,758 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:49,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 19:22:49,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 19:22:49,959 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:49,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:49,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1930803928, now seen corresponding path program 2 times [2021-12-06 19:22:49,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:49,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118331481] [2021-12-06 19:22:49,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:49,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:50,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:50,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118331481] [2021-12-06 19:22:50,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118331481] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:22:50,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66394270] [2021-12-06 19:22:50,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:22:50,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:50,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:22:50,171 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:22:50,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 19:22:50,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:22:50,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:22:50,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-06 19:22:50,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:22:50,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:22:50,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:22:50,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-06 19:22:51,273 INFO L354 Elim1Store]: treesize reduction 32, result has 8.6 percent of original size [2021-12-06 19:22:51,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 20 [2021-12-06 19:22:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:51,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:22:51,734 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_295 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_295) |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse1 (select v_ArrVal_295 |c_ULTIMATE.start_main_~nondetString2~0#1.offset|))) (or (not (= (select .cse0 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 1)) .cse1)) (= 0 .cse1) (not (= (select .cse0 |c_ULTIMATE.start_main_~nondetString1~0#1.offset|) .cse1))))) is different from false [2021-12-06 19:22:51,741 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:22:51,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 40 [2021-12-06 19:22:51,751 INFO L354 Elim1Store]: treesize reduction 18, result has 48.6 percent of original size [2021-12-06 19:22:51,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 71 [2021-12-06 19:22:51,764 INFO L354 Elim1Store]: treesize reduction 10, result has 65.5 percent of original size [2021-12-06 19:22:51,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 58 [2021-12-06 19:22:51,969 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:51,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66394270] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:22:51,970 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:22:51,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 21, 22] total 49 [2021-12-06 19:22:51,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632774254] [2021-12-06 19:22:51,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:22:51,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-06 19:22:51,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:51,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-06 19:22:51,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2034, Unknown=1, NotChecked=92, Total=2352 [2021-12-06 19:22:51,971 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand has 49 states, 49 states have (on average 2.5714285714285716) internal successors, (126), 49 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:52,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:52,598 INFO L93 Difference]: Finished difference Result 139 states and 152 transitions. [2021-12-06 19:22:52,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 19:22:52,599 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.5714285714285716) internal successors, (126), 49 states have internal predecessors, (126), 0 states have call successors, (0), 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 46 [2021-12-06 19:22:52,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:52,600 INFO L225 Difference]: With dead ends: 139 [2021-12-06 19:22:52,600 INFO L226 Difference]: Without dead ends: 121 [2021-12-06 19:22:52,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=431, Invalid=3732, Unknown=1, NotChecked=126, Total=4290 [2021-12-06 19:22:52,601 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 84 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:52,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 234 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 175 Invalid, 0 Unknown, 43 Unchecked, 0.1s Time] [2021-12-06 19:22:52,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-06 19:22:52,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 118. [2021-12-06 19:22:52,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 116 states have (on average 1.1206896551724137) internal successors, (130), 117 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:52,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 130 transitions. [2021-12-06 19:22:52,604 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 130 transitions. Word has length 46 [2021-12-06 19:22:52,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:52,604 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 130 transitions. [2021-12-06 19:22:52,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.5714285714285716) internal successors, (126), 49 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:52,604 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 130 transitions. [2021-12-06 19:22:52,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-06 19:22:52,605 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:52,605 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:52,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 19:22:52,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 19:22:52,806 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:52,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:52,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1006205749, now seen corresponding path program 3 times [2021-12-06 19:22:52,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:52,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716883321] [2021-12-06 19:22:52,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:52,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:52,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:52,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716883321] [2021-12-06 19:22:52,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716883321] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:22:52,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690688497] [2021-12-06 19:22:52,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:22:52,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:52,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:22:52,890 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:22:52,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 19:22:52,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 19:22:52,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:22:52,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 19:22:52,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:22:53,097 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:53,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:22:53,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:22:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:53,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690688497] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:22:53,291 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:22:53,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 21 [2021-12-06 19:22:53,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616970141] [2021-12-06 19:22:53,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:22:53,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 19:22:53,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:53,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 19:22:53,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2021-12-06 19:22:53,294 INFO L87 Difference]: Start difference. First operand 118 states and 130 transitions. Second operand has 22 states, 21 states have (on average 6.142857142857143) internal successors, (129), 22 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:53,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:53,490 INFO L93 Difference]: Finished difference Result 205 states and 226 transitions. [2021-12-06 19:22:53,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 19:22:53,491 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.142857142857143) internal successors, (129), 22 states have internal predecessors, (129), 0 states have call successors, (0), 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 50 [2021-12-06 19:22:53,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:53,492 INFO L225 Difference]: With dead ends: 205 [2021-12-06 19:22:53,492 INFO L226 Difference]: Without dead ends: 205 [2021-12-06 19:22:53,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=176, Invalid=636, Unknown=0, NotChecked=0, Total=812 [2021-12-06 19:22:53,493 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 388 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:53,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 344 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:22:53,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-12-06 19:22:53,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 144. [2021-12-06 19:22:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 142 states have (on average 1.1267605633802817) internal successors, (160), 143 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:53,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 160 transitions. [2021-12-06 19:22:53,497 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 160 transitions. Word has length 50 [2021-12-06 19:22:53,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:53,497 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 160 transitions. [2021-12-06 19:22:53,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.142857142857143) internal successors, (129), 22 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:53,497 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 160 transitions. [2021-12-06 19:22:53,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 19:22:53,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:53,498 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:53,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 19:22:53,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 19:22:53,699 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:53,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:53,701 INFO L85 PathProgramCache]: Analyzing trace with hash 216836651, now seen corresponding path program 3 times [2021-12-06 19:22:53,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:53,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470782726] [2021-12-06 19:22:53,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:53,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:53,863 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:53,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:53,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470782726] [2021-12-06 19:22:53,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470782726] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:22:53,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937408645] [2021-12-06 19:22:53,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:22:53,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:53,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:22:53,864 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:22:53,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 19:22:53,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-06 19:22:53,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:22:53,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-06 19:22:53,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:22:53,977 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:22:53,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:22:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:54,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:22:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:22:54,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937408645] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:22:54,301 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:22:54,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 30 [2021-12-06 19:22:54,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508671419] [2021-12-06 19:22:54,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:22:54,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 19:22:54,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:54,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 19:22:54,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2021-12-06 19:22:54,302 INFO L87 Difference]: Start difference. First operand 144 states and 160 transitions. Second operand has 30 states, 30 states have (on average 4.333333333333333) internal successors, (130), 30 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:54,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:54,630 INFO L93 Difference]: Finished difference Result 378 states and 411 transitions. [2021-12-06 19:22:54,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:22:54,630 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.333333333333333) internal successors, (130), 30 states have internal predecessors, (130), 0 states have call successors, (0), 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 52 [2021-12-06 19:22:54,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:54,632 INFO L225 Difference]: With dead ends: 378 [2021-12-06 19:22:54,632 INFO L226 Difference]: Without dead ends: 376 [2021-12-06 19:22:54,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=537, Invalid=1443, Unknown=0, NotChecked=0, Total=1980 [2021-12-06 19:22:54,633 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 302 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:54,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 426 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:22:54,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-12-06 19:22:54,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 251. [2021-12-06 19:22:54,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 249 states have (on average 1.1285140562248996) internal successors, (281), 250 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:54,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 281 transitions. [2021-12-06 19:22:54,641 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 281 transitions. Word has length 52 [2021-12-06 19:22:54,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:54,641 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 281 transitions. [2021-12-06 19:22:54,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.333333333333333) internal successors, (130), 30 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:54,642 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 281 transitions. [2021-12-06 19:22:54,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 19:22:54,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:54,643 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:54,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 19:22:54,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 19:22:54,845 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:54,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:54,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1672384838, now seen corresponding path program 1 times [2021-12-06 19:22:54,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:54,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025495498] [2021-12-06 19:22:54,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:54,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:55,025 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:22:55,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:55,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025495498] [2021-12-06 19:22:55,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025495498] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:22:55,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112031852] [2021-12-06 19:22:55,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:55,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:55,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:22:55,027 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:22:55,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 19:22:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:55,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-06 19:22:55,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:22:55,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:22:56,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:22:56,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:22:56,020 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:22:56,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 14 [2021-12-06 19:22:56,051 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:22:56,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:22:56,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-12-06 19:22:56,503 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:22:56,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 49 [2021-12-06 19:22:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:22:56,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112031852] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:22:56,677 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:22:56,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 22, 22] total 50 [2021-12-06 19:22:56,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52532037] [2021-12-06 19:22:56,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:22:56,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-12-06 19:22:56,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:56,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-12-06 19:22:56,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=2154, Unknown=0, NotChecked=0, Total=2450 [2021-12-06 19:22:56,679 INFO L87 Difference]: Start difference. First operand 251 states and 281 transitions. Second operand has 50 states, 50 states have (on average 2.44) internal successors, (122), 50 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:57,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:57,492 INFO L93 Difference]: Finished difference Result 310 states and 342 transitions. [2021-12-06 19:22:57,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 19:22:57,492 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.44) internal successors, (122), 50 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-06 19:22:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:57,494 INFO L225 Difference]: With dead ends: 310 [2021-12-06 19:22:57,494 INFO L226 Difference]: Without dead ends: 304 [2021-12-06 19:22:57,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1514 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=753, Invalid=4217, Unknown=0, NotChecked=0, Total=4970 [2021-12-06 19:22:57,495 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 131 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 255 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:57,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 528 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 187 Invalid, 0 Unknown, 255 Unchecked, 0.1s Time] [2021-12-06 19:22:57,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-12-06 19:22:57,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 287. [2021-12-06 19:22:57,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 285 states have (on average 1.1157894736842104) internal successors, (318), 286 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:57,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 318 transitions. [2021-12-06 19:22:57,501 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 318 transitions. Word has length 53 [2021-12-06 19:22:57,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:57,501 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 318 transitions. [2021-12-06 19:22:57,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.44) internal successors, (122), 50 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:57,501 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 318 transitions. [2021-12-06 19:22:57,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 19:22:57,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:57,502 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:57,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 19:22:57,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-06 19:22:57,702 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:22:57,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:57,703 INFO L85 PathProgramCache]: Analyzing trace with hash -847276983, now seen corresponding path program 1 times [2021-12-06 19:22:57,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:57,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957807945] [2021-12-06 19:22:57,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:57,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:57,823 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 19:22:57,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:57,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957807945] [2021-12-06 19:22:57,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957807945] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:22:57,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478072594] [2021-12-06 19:22:57,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:57,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:57,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:22:57,824 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:22:57,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 19:22:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:57,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 88 conjunts are in the unsatisfiable core [2021-12-06 19:22:57,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:22:57,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:22:58,020 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:22:58,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2021-12-06 19:22:58,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 3 [2021-12-06 19:23:00,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:23:00,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:23:00,772 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-12-06 19:23:00,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 142 treesize of output 75 [2021-12-06 19:23:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:23:01,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:03,093 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:23:03,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 42 [2021-12-06 19:23:03,109 INFO L354 Elim1Store]: treesize reduction 18, result has 48.6 percent of original size [2021-12-06 19:23:03,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 75 [2021-12-06 19:23:03,137 INFO L354 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2021-12-06 19:23:03,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 155 treesize of output 127 [2021-12-06 19:23:03,507 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:23:03,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478072594] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:03,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:03,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 28, 28] total 62 [2021-12-06 19:23:03,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106682270] [2021-12-06 19:23:03,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:03,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-12-06 19:23:03,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:03,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-12-06 19:23:03,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=3472, Unknown=1, NotChecked=0, Total=3782 [2021-12-06 19:23:03,510 INFO L87 Difference]: Start difference. First operand 287 states and 318 transitions. Second operand has 62 states, 62 states have (on average 2.2419354838709675) internal successors, (139), 62 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:05,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:05,188 INFO L93 Difference]: Finished difference Result 324 states and 353 transitions. [2021-12-06 19:23:05,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 19:23:05,189 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.2419354838709675) internal successors, (139), 62 states have internal predecessors, (139), 0 states have call successors, (0), 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 56 [2021-12-06 19:23:05,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:05,190 INFO L225 Difference]: With dead ends: 324 [2021-12-06 19:23:05,190 INFO L226 Difference]: Without dead ends: 279 [2021-12-06 19:23:05,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 62 SyntacticMatches, 10 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2036 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=867, Invalid=5938, Unknown=1, NotChecked=0, Total=6806 [2021-12-06 19:23:05,192 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 340 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 229 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:05,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 616 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 318 Invalid, 0 Unknown, 229 Unchecked, 0.1s Time] [2021-12-06 19:23:05,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-12-06 19:23:05,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 275. [2021-12-06 19:23:05,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 273 states have (on average 1.1135531135531136) internal successors, (304), 274 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:05,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 304 transitions. [2021-12-06 19:23:05,197 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 304 transitions. Word has length 56 [2021-12-06 19:23:05,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:05,197 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 304 transitions. [2021-12-06 19:23:05,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.2419354838709675) internal successors, (139), 62 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:05,197 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 304 transitions. [2021-12-06 19:23:05,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 19:23:05,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:05,198 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:05,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 19:23:05,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:05,399 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:23:05,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:05,400 INFO L85 PathProgramCache]: Analyzing trace with hash 509273480, now seen corresponding path program 4 times [2021-12-06 19:23:05,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:05,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289892438] [2021-12-06 19:23:05,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:05,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:05,555 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:05,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:05,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289892438] [2021-12-06 19:23:05,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289892438] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:05,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716623168] [2021-12-06 19:23:05,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:23:05,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:05,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:05,557 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:05,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 19:23:05,611 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:23:05,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:05,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 19:23:05,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:05,631 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:23:05,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:23:05,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:23:06,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:23:06,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-06 19:23:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 34 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:06,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:06,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-12-06 19:23:06,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-06 19:23:06,642 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 29 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:06,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716623168] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:06,642 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:06,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2021-12-06 19:23:06,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44434163] [2021-12-06 19:23:06,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:06,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-06 19:23:06,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:06,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-06 19:23:06,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1634, Unknown=0, NotChecked=0, Total=1806 [2021-12-06 19:23:06,644 INFO L87 Difference]: Start difference. First operand 275 states and 304 transitions. Second operand has 43 states, 43 states have (on average 3.441860465116279) internal successors, (148), 43 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:07,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:07,096 INFO L93 Difference]: Finished difference Result 350 states and 382 transitions. [2021-12-06 19:23:07,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 19:23:07,096 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.441860465116279) internal successors, (148), 43 states have internal predecessors, (148), 0 states have call successors, (0), 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 56 [2021-12-06 19:23:07,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:07,098 INFO L225 Difference]: With dead ends: 350 [2021-12-06 19:23:07,098 INFO L226 Difference]: Without dead ends: 319 [2021-12-06 19:23:07,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=423, Invalid=3359, Unknown=0, NotChecked=0, Total=3782 [2021-12-06 19:23:07,099 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 112 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:07,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 852 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 373 Invalid, 0 Unknown, 136 Unchecked, 0.1s Time] [2021-12-06 19:23:07,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-12-06 19:23:07,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 308. [2021-12-06 19:23:07,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 306 states have (on average 1.1111111111111112) internal successors, (340), 307 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:07,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 340 transitions. [2021-12-06 19:23:07,105 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 340 transitions. Word has length 56 [2021-12-06 19:23:07,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:07,105 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 340 transitions. [2021-12-06 19:23:07,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.441860465116279) internal successors, (148), 43 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:07,105 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 340 transitions. [2021-12-06 19:23:07,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 19:23:07,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:07,106 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:07,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 19:23:07,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:07,307 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:23:07,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:07,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1104896393, now seen corresponding path program 2 times [2021-12-06 19:23:07,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:07,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68060074] [2021-12-06 19:23:07,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:07,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:07,424 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:23:07,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:07,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68060074] [2021-12-06 19:23:07,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68060074] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:07,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898912567] [2021-12-06 19:23:07,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:23:07,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:07,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:07,426 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:07,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 19:23:07,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:23:07,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:07,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 19:23:07,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 28 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:23:07,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:07,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:23:07,749 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 28 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:23:07,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898912567] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:07,749 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:07,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2021-12-06 19:23:07,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172146719] [2021-12-06 19:23:07,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:07,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 19:23:07,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:07,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 19:23:07,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2021-12-06 19:23:07,750 INFO L87 Difference]: Start difference. First operand 308 states and 340 transitions. Second operand has 24 states, 23 states have (on average 5.391304347826087) internal successors, (124), 24 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:07,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:07,935 INFO L93 Difference]: Finished difference Result 404 states and 439 transitions. [2021-12-06 19:23:07,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:23:07,935 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.391304347826087) internal successors, (124), 24 states have internal predecessors, (124), 0 states have call successors, (0), 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 57 [2021-12-06 19:23:07,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:07,937 INFO L225 Difference]: With dead ends: 404 [2021-12-06 19:23:07,937 INFO L226 Difference]: Without dead ends: 404 [2021-12-06 19:23:07,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=734, Unknown=0, NotChecked=0, Total=930 [2021-12-06 19:23:07,938 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 182 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:07,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 291 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:23:07,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-12-06 19:23:07,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 320. [2021-12-06 19:23:07,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 318 states have (on average 1.1069182389937107) internal successors, (352), 319 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:07,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 352 transitions. [2021-12-06 19:23:07,943 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 352 transitions. Word has length 57 [2021-12-06 19:23:07,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:07,943 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 352 transitions. [2021-12-06 19:23:07,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.391304347826087) internal successors, (124), 24 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:07,944 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 352 transitions. [2021-12-06 19:23:07,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 19:23:07,944 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:07,944 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:07,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 19:23:08,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:08,145 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:23:08,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:08,145 INFO L85 PathProgramCache]: Analyzing trace with hash 223488613, now seen corresponding path program 5 times [2021-12-06 19:23:08,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:08,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660708884] [2021-12-06 19:23:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:08,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:08,289 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 6 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:08,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:08,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660708884] [2021-12-06 19:23:08,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660708884] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:08,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236060251] [2021-12-06 19:23:08,289 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:23:08,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:08,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:08,290 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:08,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 19:23:08,362 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-06 19:23:08,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:08,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-06 19:23:08,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:08,377 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:23:08,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:23:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 15 proven. 53 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:08,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 28 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:08,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236060251] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:08,933 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:08,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 35 [2021-12-06 19:23:08,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442852965] [2021-12-06 19:23:08,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:08,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-06 19:23:08,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:08,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-06 19:23:08,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1073, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 19:23:08,935 INFO L87 Difference]: Start difference. First operand 320 states and 352 transitions. Second operand has 36 states, 35 states have (on average 4.628571428571429) internal successors, (162), 36 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:09,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:09,428 INFO L93 Difference]: Finished difference Result 512 states and 556 transitions. [2021-12-06 19:23:09,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 19:23:09,429 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 4.628571428571429) internal successors, (162), 36 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-12-06 19:23:09,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:09,431 INFO L225 Difference]: With dead ends: 512 [2021-12-06 19:23:09,431 INFO L226 Difference]: Without dead ends: 512 [2021-12-06 19:23:09,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=512, Invalid=1840, Unknown=0, NotChecked=0, Total=2352 [2021-12-06 19:23:09,432 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 463 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:09,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 746 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:23:09,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-12-06 19:23:09,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 412. [2021-12-06 19:23:09,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 410 states have (on average 1.1170731707317074) internal successors, (458), 411 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:09,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 458 transitions. [2021-12-06 19:23:09,440 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 458 transitions. Word has length 60 [2021-12-06 19:23:09,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:09,440 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 458 transitions. [2021-12-06 19:23:09,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 4.628571428571429) internal successors, (162), 36 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:09,440 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 458 transitions. [2021-12-06 19:23:09,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 19:23:09,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:09,441 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:09,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 19:23:09,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:09,641 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:23:09,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:09,641 INFO L85 PathProgramCache]: Analyzing trace with hash 276863736, now seen corresponding path program 4 times [2021-12-06 19:23:09,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:09,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585316617] [2021-12-06 19:23:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:09,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:10,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:10,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585316617] [2021-12-06 19:23:10,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585316617] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:10,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093104786] [2021-12-06 19:23:10,143 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:23:10,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:10,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:10,144 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:10,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 19:23:10,207 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:23:10,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:10,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 84 conjunts are in the unsatisfiable core [2021-12-06 19:23:10,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:10,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:23:10,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 19:23:10,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:23:10,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 19:23:13,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:23:13,408 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:13,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:16,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:23:16,649 INFO L354 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2021-12-06 19:23:16,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 353 treesize of output 273 [2021-12-06 19:23:16,657 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:23:16,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 265 treesize of output 249 [2021-12-06 19:23:16,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 74 [2021-12-06 19:23:16,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:23:16,937 INFO L354 Elim1Store]: treesize reduction 7, result has 86.0 percent of original size [2021-12-06 19:23:16,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 111 treesize of output 128 [2021-12-06 19:23:17,816 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 17 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:17,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093104786] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:17,816 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:17,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 27] total 69 [2021-12-06 19:23:17,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95899052] [2021-12-06 19:23:17,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:17,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-12-06 19:23:17,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:17,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-12-06 19:23:17,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=4317, Unknown=0, NotChecked=0, Total=4692 [2021-12-06 19:23:17,819 INFO L87 Difference]: Start difference. First operand 412 states and 458 transitions. Second operand has 69 states, 69 states have (on average 2.4347826086956523) internal successors, (168), 69 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:25,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:25,058 INFO L93 Difference]: Finished difference Result 640 states and 703 transitions. [2021-12-06 19:23:25,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-06 19:23:25,058 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.4347826086956523) internal successors, (168), 69 states have internal predecessors, (168), 0 states have call successors, (0), 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 63 [2021-12-06 19:23:25,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:25,061 INFO L225 Difference]: With dead ends: 640 [2021-12-06 19:23:25,061 INFO L226 Difference]: Without dead ends: 603 [2021-12-06 19:23:25,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2561 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=959, Invalid=9546, Unknown=1, NotChecked=0, Total=10506 [2021-12-06 19:23:25,064 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 232 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 624 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:25,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 634 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 569 Invalid, 0 Unknown, 624 Unchecked, 0.2s Time] [2021-12-06 19:23:25,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-12-06 19:23:25,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 600. [2021-12-06 19:23:25,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 598 states have (on average 1.108695652173913) internal successors, (663), 599 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:25,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 663 transitions. [2021-12-06 19:23:25,073 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 663 transitions. Word has length 63 [2021-12-06 19:23:25,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:25,073 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 663 transitions. [2021-12-06 19:23:25,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.4347826086956523) internal successors, (168), 69 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:25,073 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 663 transitions. [2021-12-06 19:23:25,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 19:23:25,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:25,074 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:25,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 19:23:25,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-06 19:23:25,275 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:23:25,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:25,275 INFO L85 PathProgramCache]: Analyzing trace with hash -525028771, now seen corresponding path program 3 times [2021-12-06 19:23:25,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:25,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787765091] [2021-12-06 19:23:25,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:25,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:25,747 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 41 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:23:25,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:25,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787765091] [2021-12-06 19:23:25,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787765091] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:25,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250741330] [2021-12-06 19:23:25,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:23:25,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:25,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:25,748 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:25,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 19:23:25,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 19:23:25,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:25,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-06 19:23:25,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:25,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:23:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:23:26,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:26,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:23:26,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:23:26,342 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:23:26,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250741330] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:26,343 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:26,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 14] total 35 [2021-12-06 19:23:26,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571556719] [2021-12-06 19:23:26,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:26,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-06 19:23:26,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:26,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-06 19:23:26,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 19:23:26,344 INFO L87 Difference]: Start difference. First operand 600 states and 663 transitions. Second operand has 35 states, 35 states have (on average 3.857142857142857) internal successors, (135), 35 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:27,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:27,742 INFO L93 Difference]: Finished difference Result 868 states and 952 transitions. [2021-12-06 19:23:27,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-06 19:23:27,743 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.857142857142857) internal successors, (135), 35 states have internal predecessors, (135), 0 states have call successors, (0), 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 63 [2021-12-06 19:23:27,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:27,746 INFO L225 Difference]: With dead ends: 868 [2021-12-06 19:23:27,746 INFO L226 Difference]: Without dead ends: 850 [2021-12-06 19:23:27,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 109 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=469, Invalid=3437, Unknown=0, NotChecked=0, Total=3906 [2021-12-06 19:23:27,747 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 642 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 220 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:27,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 1032 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1045 Invalid, 0 Unknown, 220 Unchecked, 0.4s Time] [2021-12-06 19:23:27,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2021-12-06 19:23:27,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 656. [2021-12-06 19:23:27,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 654 states have (on average 1.1024464831804281) internal successors, (721), 655 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:27,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 721 transitions. [2021-12-06 19:23:27,757 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 721 transitions. Word has length 63 [2021-12-06 19:23:27,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:27,757 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 721 transitions. [2021-12-06 19:23:27,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.857142857142857) internal successors, (135), 35 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:27,757 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 721 transitions. [2021-12-06 19:23:27,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 19:23:27,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:27,758 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:27,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 19:23:27,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:27,960 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:23:27,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:27,961 INFO L85 PathProgramCache]: Analyzing trace with hash 265315897, now seen corresponding path program 6 times [2021-12-06 19:23:27,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:27,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304709949] [2021-12-06 19:23:27,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:27,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 76 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:28,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:28,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304709949] [2021-12-06 19:23:28,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304709949] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:28,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382597520] [2021-12-06 19:23:28,166 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:23:28,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:28,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:28,167 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:28,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 19:23:28,250 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-12-06 19:23:28,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:28,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-06 19:23:28,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:28,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:23:28,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:23:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 76 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:28,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:28,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:23:28,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:23:28,660 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 76 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:28,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382597520] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:28,661 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:28,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 34 [2021-12-06 19:23:28,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771252166] [2021-12-06 19:23:28,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:28,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 19:23:28,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:28,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 19:23:28,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 19:23:28,662 INFO L87 Difference]: Start difference. First operand 656 states and 721 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:29,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:29,297 INFO L93 Difference]: Finished difference Result 943 states and 1018 transitions. [2021-12-06 19:23:29,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 19:23:29,297 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 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 66 [2021-12-06 19:23:29,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:29,300 INFO L225 Difference]: With dead ends: 943 [2021-12-06 19:23:29,300 INFO L226 Difference]: Without dead ends: 897 [2021-12-06 19:23:29,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=336, Invalid=2016, Unknown=0, NotChecked=0, Total=2352 [2021-12-06 19:23:29,301 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 424 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:29,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 1714 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:23:29,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-12-06 19:23:29,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 822. [2021-12-06 19:23:29,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 820 states have (on average 1.101219512195122) internal successors, (903), 821 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:29,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 903 transitions. [2021-12-06 19:23:29,311 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 903 transitions. Word has length 66 [2021-12-06 19:23:29,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:29,312 INFO L470 AbstractCegarLoop]: Abstraction has 822 states and 903 transitions. [2021-12-06 19:23:29,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:29,312 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 903 transitions. [2021-12-06 19:23:29,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 19:23:29,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:29,313 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:29,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 19:23:29,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:29,514 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:23:29,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:29,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1057469728, now seen corresponding path program 4 times [2021-12-06 19:23:29,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:29,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197527744] [2021-12-06 19:23:29,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:29,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 56 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:23:29,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:29,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197527744] [2021-12-06 19:23:29,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197527744] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:29,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395127795] [2021-12-06 19:23:29,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:23:29,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:29,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:29,672 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:29,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 19:23:29,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:23:29,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:29,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-06 19:23:29,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:29,759 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:23:29,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:23:29,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-06 19:23:30,063 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:23:30,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-12-06 19:23:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 49 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:23:30,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:30,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:23:30,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:23:30,974 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:23:30,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395127795] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:30,974 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:30,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 39 [2021-12-06 19:23:30,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126756074] [2021-12-06 19:23:30,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:30,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-06 19:23:30,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:30,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-06 19:23:30,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1376, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 19:23:30,975 INFO L87 Difference]: Start difference. First operand 822 states and 903 transitions. Second operand has 40 states, 39 states have (on average 4.3076923076923075) internal successors, (168), 40 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:32,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:32,274 INFO L93 Difference]: Finished difference Result 1265 states and 1371 transitions. [2021-12-06 19:23:32,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 19:23:32,274 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 4.3076923076923075) internal successors, (168), 40 states have internal predecessors, (168), 0 states have call successors, (0), 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 67 [2021-12-06 19:23:32,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:32,278 INFO L225 Difference]: With dead ends: 1265 [2021-12-06 19:23:32,279 INFO L226 Difference]: Without dead ends: 1264 [2021-12-06 19:23:32,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=923, Invalid=3769, Unknown=0, NotChecked=0, Total=4692 [2021-12-06 19:23:32,279 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 953 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:32,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 619 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 988 Invalid, 0 Unknown, 82 Unchecked, 0.4s Time] [2021-12-06 19:23:32,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2021-12-06 19:23:32,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 727. [2021-12-06 19:23:32,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 725 states have (on average 1.0979310344827586) internal successors, (796), 726 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:32,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 796 transitions. [2021-12-06 19:23:32,292 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 796 transitions. Word has length 67 [2021-12-06 19:23:32,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:32,292 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 796 transitions. [2021-12-06 19:23:32,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 4.3076923076923075) internal successors, (168), 40 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:32,292 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 796 transitions. [2021-12-06 19:23:32,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 19:23:32,293 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:32,293 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:32,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 19:23:32,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-12-06 19:23:32,494 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:23:32,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:32,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1668022213, now seen corresponding path program 5 times [2021-12-06 19:23:32,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:32,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540929967] [2021-12-06 19:23:32,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:32,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:32,584 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:32,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:32,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540929967] [2021-12-06 19:23:32,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540929967] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:32,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824828327] [2021-12-06 19:23:32,584 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:23:32,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:32,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:32,585 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:32,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 19:23:32,658 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-06 19:23:32,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:32,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-06 19:23:32,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:32,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:23:32,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 19:23:32,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:23:32,882 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:32,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:33,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824828327] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:33,131 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:33,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2021-12-06 19:23:33,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140301507] [2021-12-06 19:23:33,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:33,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:23:33,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:33,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:23:33,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:23:33,132 INFO L87 Difference]: Start difference. First operand 727 states and 796 transitions. Second operand has 25 states, 24 states have (on average 7.458333333333333) internal successors, (179), 25 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:33,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:33,446 INFO L93 Difference]: Finished difference Result 1130 states and 1238 transitions. [2021-12-06 19:23:33,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:23:33,446 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 7.458333333333333) internal successors, (179), 25 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-06 19:23:33,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:33,450 INFO L225 Difference]: With dead ends: 1130 [2021-12-06 19:23:33,450 INFO L226 Difference]: Without dead ends: 1130 [2021-12-06 19:23:33,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=247, Invalid=943, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 19:23:33,450 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 342 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:33,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 539 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:23:33,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2021-12-06 19:23:33,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 847. [2021-12-06 19:23:33,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 845 states have (on average 1.0982248520710058) internal successors, (928), 846 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:33,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 928 transitions. [2021-12-06 19:23:33,463 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 928 transitions. Word has length 67 [2021-12-06 19:23:33,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:33,463 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 928 transitions. [2021-12-06 19:23:33,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 7.458333333333333) internal successors, (179), 25 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:33,464 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 928 transitions. [2021-12-06 19:23:33,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 19:23:33,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:33,465 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:33,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-06 19:23:33,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-12-06 19:23:33,666 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:23:33,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:33,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1055980246, now seen corresponding path program 7 times [2021-12-06 19:23:33,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:33,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166831814] [2021-12-06 19:23:33,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:33,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:33,865 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:33,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:33,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166831814] [2021-12-06 19:23:33,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166831814] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:33,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798176645] [2021-12-06 19:23:33,866 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:23:33,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:33,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:33,867 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:33,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 19:23:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:33,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-06 19:23:33,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:34,126 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 28 proven. 82 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:34,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:34,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:23:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 28 proven. 82 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:34,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798176645] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:34,347 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:34,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2021-12-06 19:23:34,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546951659] [2021-12-06 19:23:34,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:34,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-06 19:23:34,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:34,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-06 19:23:34,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1109, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 19:23:34,348 INFO L87 Difference]: Start difference. First operand 847 states and 928 transitions. Second operand has 36 states, 35 states have (on average 4.228571428571429) internal successors, (148), 36 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:34,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:34,894 INFO L93 Difference]: Finished difference Result 1212 states and 1318 transitions. [2021-12-06 19:23:34,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:23:34,895 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 4.228571428571429) internal successors, (148), 36 states have internal predecessors, (148), 0 states have call successors, (0), 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 70 [2021-12-06 19:23:34,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:34,899 INFO L225 Difference]: With dead ends: 1212 [2021-12-06 19:23:34,899 INFO L226 Difference]: Without dead ends: 1212 [2021-12-06 19:23:34,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=454, Invalid=1898, Unknown=0, NotChecked=0, Total=2352 [2021-12-06 19:23:34,899 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 598 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:34,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [598 Valid, 908 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:23:34,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2021-12-06 19:23:34,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1027. [2021-12-06 19:23:34,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1025 states have (on average 1.1053658536585367) internal successors, (1133), 1026 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:34,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1133 transitions. [2021-12-06 19:23:34,912 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1133 transitions. Word has length 70 [2021-12-06 19:23:34,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:34,912 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 1133 transitions. [2021-12-06 19:23:34,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 4.228571428571429) internal successors, (148), 36 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:34,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1133 transitions. [2021-12-06 19:23:34,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-06 19:23:34,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:34,914 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:34,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 19:23:35,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:35,115 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:23:35,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:35,116 INFO L85 PathProgramCache]: Analyzing trace with hash 2120159335, now seen corresponding path program 2 times [2021-12-06 19:23:35,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:35,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542648819] [2021-12-06 19:23:35,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:35,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:35,270 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 37 proven. 23 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 19:23:35,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:35,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542648819] [2021-12-06 19:23:35,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542648819] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:35,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352646232] [2021-12-06 19:23:35,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:23:35,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:35,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:35,272 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:35,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 19:23:35,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:23:35,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:35,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-06 19:23:35,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:35,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:23:35,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:23:35,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-06 19:23:35,832 INFO L354 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2021-12-06 19:23:35,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 23 [2021-12-06 19:23:35,849 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 19:23:35,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:36,099 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_cstrpbrk_~sc1~0#1.offset_60| Int) (v_ArrVal_809 (Array Int Int))) (or (< |v_ULTIMATE.start_cstrpbrk_~sc1~0#1.offset_60| 0) (< |c_ULTIMATE.start_main_~nondetString1~0#1.offset| |v_ULTIMATE.start_cstrpbrk_~sc1~0#1.offset_60|) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_809) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |v_ULTIMATE.start_cstrpbrk_~sc1~0#1.offset_60| 2)) 0))) is different from false [2021-12-06 19:23:36,106 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:23:36,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 19:23:36,110 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:23:36,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2021-12-06 19:23:36,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:23:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 5 proven. 60 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 19:23:36,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352646232] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:36,444 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:36,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19, 19] total 43 [2021-12-06 19:23:36,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198511842] [2021-12-06 19:23:36,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:36,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-06 19:23:36,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:36,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-06 19:23:36,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1584, Unknown=1, NotChecked=80, Total=1806 [2021-12-06 19:23:36,445 INFO L87 Difference]: Start difference. First operand 1027 states and 1133 transitions. Second operand has 43 states, 43 states have (on average 3.86046511627907) internal successors, (166), 43 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:36,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:36,681 INFO L93 Difference]: Finished difference Result 1098 states and 1207 transitions. [2021-12-06 19:23:36,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:23:36,681 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.86046511627907) internal successors, (166), 43 states have internal predecessors, (166), 0 states have call successors, (0), 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 73 [2021-12-06 19:23:36,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:36,684 INFO L225 Difference]: With dead ends: 1098 [2021-12-06 19:23:36,684 INFO L226 Difference]: Without dead ends: 934 [2021-12-06 19:23:36,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 114 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=196, Invalid=2063, Unknown=1, NotChecked=92, Total=2352 [2021-12-06 19:23:36,685 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 111 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:36,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 627 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 379 Invalid, 0 Unknown, 195 Unchecked, 0.1s Time] [2021-12-06 19:23:36,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-12-06 19:23:36,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 857. [2021-12-06 19:23:36,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 855 states have (on average 1.1134502923976608) internal successors, (952), 856 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:36,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 952 transitions. [2021-12-06 19:23:36,694 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 952 transitions. Word has length 73 [2021-12-06 19:23:36,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:36,695 INFO L470 AbstractCegarLoop]: Abstraction has 857 states and 952 transitions. [2021-12-06 19:23:36,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.86046511627907) internal successors, (166), 43 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:36,695 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 952 transitions. [2021-12-06 19:23:36,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 19:23:36,696 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:36,696 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:36,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-06 19:23:36,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-12-06 19:23:36,897 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:23:36,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:36,898 INFO L85 PathProgramCache]: Analyzing trace with hash 2092129770, now seen corresponding path program 8 times [2021-12-06 19:23:36,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:36,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798598013] [2021-12-06 19:23:36,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:36,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:37,138 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 21 proven. 120 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:37,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:37,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798598013] [2021-12-06 19:23:37,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798598013] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:37,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306555264] [2021-12-06 19:23:37,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:23:37,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:37,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:37,139 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:37,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 19:23:37,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:23:37,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:37,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-06 19:23:37,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:37,224 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:23:37,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:23:37,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:23:38,291 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:23:38,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-12-06 19:23:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 28 proven. 113 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:38,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:39,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:23:39,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:23:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 45 proven. 96 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:39,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306555264] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:39,686 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:39,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 61 [2021-12-06 19:23:39,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226113744] [2021-12-06 19:23:39,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:39,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-12-06 19:23:39,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:39,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-12-06 19:23:39,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=3390, Unknown=0, NotChecked=0, Total=3660 [2021-12-06 19:23:39,687 INFO L87 Difference]: Start difference. First operand 857 states and 952 transitions. Second operand has 61 states, 61 states have (on average 3.6065573770491803) internal successors, (220), 61 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:41,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:41,452 INFO L93 Difference]: Finished difference Result 1174 states and 1279 transitions. [2021-12-06 19:23:41,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-06 19:23:41,453 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.6065573770491803) internal successors, (220), 61 states have internal predecessors, (220), 0 states have call successors, (0), 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 76 [2021-12-06 19:23:41,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:41,456 INFO L225 Difference]: With dead ends: 1174 [2021-12-06 19:23:41,456 INFO L226 Difference]: Without dead ends: 1128 [2021-12-06 19:23:41,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1731 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=712, Invalid=7660, Unknown=0, NotChecked=0, Total=8372 [2021-12-06 19:23:41,457 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 868 mSDsluCounter, 2209 mSDsCounter, 0 mSdLazyCounter, 2216 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 3115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 860 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:41,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [868 Valid, 2299 Invalid, 3115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2216 Invalid, 0 Unknown, 860 Unchecked, 0.7s Time] [2021-12-06 19:23:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-12-06 19:23:41,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 965. [2021-12-06 19:23:41,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 963 states have (on average 1.1131879543094496) internal successors, (1072), 964 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:41,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1072 transitions. [2021-12-06 19:23:41,468 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1072 transitions. Word has length 76 [2021-12-06 19:23:41,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:41,469 INFO L470 AbstractCegarLoop]: Abstraction has 965 states and 1072 transitions. [2021-12-06 19:23:41,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.6065573770491803) internal successors, (220), 61 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:41,469 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1072 transitions. [2021-12-06 19:23:41,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-06 19:23:41,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:41,470 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:41,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-06 19:23:41,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-12-06 19:23:41,671 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:23:41,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:41,672 INFO L85 PathProgramCache]: Analyzing trace with hash -24530168, now seen corresponding path program 5 times [2021-12-06 19:23:41,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:41,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682926604] [2021-12-06 19:23:41,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:41,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:41,811 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 52 proven. 61 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:23:41,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:41,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682926604] [2021-12-06 19:23:41,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682926604] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:41,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029865093] [2021-12-06 19:23:41,812 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:23:41,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:41,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:41,813 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:41,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-06 19:23:41,956 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-12-06 19:23:41,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:41,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 19:23:41,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:41,971 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:23:41,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:23:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 71 proven. 42 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:23:42,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:42,472 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 71 proven. 42 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:23:42,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029865093] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:42,472 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:42,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 35 [2021-12-06 19:23:42,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318641010] [2021-12-06 19:23:42,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:42,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-06 19:23:42,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:42,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-06 19:23:42,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 19:23:42,473 INFO L87 Difference]: Start difference. First operand 965 states and 1072 transitions. Second operand has 35 states, 35 states have (on average 5.228571428571429) internal successors, (183), 35 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:42,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:42,818 INFO L93 Difference]: Finished difference Result 1088 states and 1182 transitions. [2021-12-06 19:23:42,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 19:23:42,818 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.228571428571429) internal successors, (183), 35 states have internal predecessors, (183), 0 states have call successors, (0), 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 79 [2021-12-06 19:23:42,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:42,821 INFO L225 Difference]: With dead ends: 1088 [2021-12-06 19:23:42,821 INFO L226 Difference]: Without dead ends: 1018 [2021-12-06 19:23:42,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=615, Invalid=1935, Unknown=0, NotChecked=0, Total=2550 [2021-12-06 19:23:42,822 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 349 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:42,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 455 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:23:42,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2021-12-06 19:23:42,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 797. [2021-12-06 19:23:42,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 795 states have (on average 1.1069182389937107) internal successors, (880), 796 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:42,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 880 transitions. [2021-12-06 19:23:42,832 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 880 transitions. Word has length 79 [2021-12-06 19:23:42,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:42,832 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 880 transitions. [2021-12-06 19:23:42,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.228571428571429) internal successors, (183), 35 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:42,833 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 880 transitions. [2021-12-06 19:23:42,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-06 19:23:42,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:42,834 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:42,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-06 19:23:43,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:43,035 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:23:43,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:43,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2132340658, now seen corresponding path program 6 times [2021-12-06 19:23:43,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:43,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200360951] [2021-12-06 19:23:43,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:43,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 7 proven. 90 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:43,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:43,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200360951] [2021-12-06 19:23:43,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200360951] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:43,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260566459] [2021-12-06 19:23:43,325 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:23:43,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:43,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:43,326 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:43,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 19:23:43,408 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-12-06 19:23:43,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:43,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 68 conjunts are in the unsatisfiable core [2021-12-06 19:23:43,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:43,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:23:43,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:23:43,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-06 19:23:44,351 INFO L354 Elim1Store]: treesize reduction 8, result has 27.3 percent of original size [2021-12-06 19:23:44,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2021-12-06 19:23:44,377 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 7 proven. 90 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:44,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:44,951 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_cstrpbrk_~s~0#1.offset| Int) (v_ArrVal_934 (Array Int Int))) (let ((.cse0 (select v_ArrVal_934 |ULTIMATE.start_cstrpbrk_~s~0#1.offset|))) (or (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_934) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 3)) .cse0)) (= .cse0 0)))) is different from false [2021-12-06 19:23:44,956 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:23:44,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2021-12-06 19:23:44,960 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:23:44,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2021-12-06 19:23:44,964 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:23:44,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32 [2021-12-06 19:23:45,135 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 7 proven. 90 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:45,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260566459] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:45,135 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:45,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 21] total 54 [2021-12-06 19:23:45,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448059458] [2021-12-06 19:23:45,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:45,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-12-06 19:23:45,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:45,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-12-06 19:23:45,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=2602, Unknown=1, NotChecked=102, Total=2862 [2021-12-06 19:23:45,137 INFO L87 Difference]: Start difference. First operand 797 states and 880 transitions. Second operand has 54 states, 54 states have (on average 3.8518518518518516) internal successors, (208), 54 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:45,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:45,855 INFO L93 Difference]: Finished difference Result 1255 states and 1375 transitions. [2021-12-06 19:23:45,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 19:23:45,855 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.8518518518518516) internal successors, (208), 54 states have internal predecessors, (208), 0 states have call successors, (0), 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 80 [2021-12-06 19:23:45,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:45,859 INFO L225 Difference]: With dead ends: 1255 [2021-12-06 19:23:45,859 INFO L226 Difference]: Without dead ends: 1193 [2021-12-06 19:23:45,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 129 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=287, Invalid=4828, Unknown=1, NotChecked=140, Total=5256 [2021-12-06 19:23:45,860 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 100 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 717 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:45,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 1480 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 495 Invalid, 0 Unknown, 717 Unchecked, 0.1s Time] [2021-12-06 19:23:45,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2021-12-06 19:23:45,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1188. [2021-12-06 19:23:45,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1186 states have (on average 1.1045531197301854) internal successors, (1310), 1187 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:45,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1310 transitions. [2021-12-06 19:23:45,873 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1310 transitions. Word has length 80 [2021-12-06 19:23:45,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:45,873 INFO L470 AbstractCegarLoop]: Abstraction has 1188 states and 1310 transitions. [2021-12-06 19:23:45,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.8518518518518516) internal successors, (208), 54 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:45,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1310 transitions. [2021-12-06 19:23:45,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-06 19:23:45,874 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:45,874 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:45,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-06 19:23:46,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-12-06 19:23:46,076 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:23:46,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:46,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1003116751, now seen corresponding path program 7 times [2021-12-06 19:23:46,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:46,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851006176] [2021-12-06 19:23:46,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:46,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:46,206 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 6 proven. 104 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:46,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:46,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851006176] [2021-12-06 19:23:46,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851006176] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:46,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940565928] [2021-12-06 19:23:46,207 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:23:46,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:46,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:46,208 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:46,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-06 19:23:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:46,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 19:23:46,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:46,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:46,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:23:46,723 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:46,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940565928] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:46,723 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:46,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 27 [2021-12-06 19:23:46,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144071422] [2021-12-06 19:23:46,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:46,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 19:23:46,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:46,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 19:23:46,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2021-12-06 19:23:46,724 INFO L87 Difference]: Start difference. First operand 1188 states and 1310 transitions. Second operand has 28 states, 27 states have (on average 6.666666666666667) internal successors, (180), 28 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:47,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:47,045 INFO L93 Difference]: Finished difference Result 1754 states and 1930 transitions. [2021-12-06 19:23:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:23:47,045 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 6.666666666666667) internal successors, (180), 28 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-12-06 19:23:47,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:47,051 INFO L225 Difference]: With dead ends: 1754 [2021-12-06 19:23:47,051 INFO L226 Difference]: Without dead ends: 1754 [2021-12-06 19:23:47,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 150 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=1182, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 19:23:47,052 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 433 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:47,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 780 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:23:47,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2021-12-06 19:23:47,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1314. [2021-12-06 19:23:47,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1312 states have (on average 1.1044207317073171) internal successors, (1449), 1313 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:47,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1449 transitions. [2021-12-06 19:23:47,066 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1449 transitions. Word has length 84 [2021-12-06 19:23:47,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:47,067 INFO L470 AbstractCegarLoop]: Abstraction has 1314 states and 1449 transitions. [2021-12-06 19:23:47,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 6.666666666666667) internal successors, (180), 28 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:47,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1449 transitions. [2021-12-06 19:23:47,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-06 19:23:47,068 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:47,068 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:47,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-12-06 19:23:47,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:47,269 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:23:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1484661605, now seen corresponding path program 9 times [2021-12-06 19:23:47,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:47,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751526232] [2021-12-06 19:23:47,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:47,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:47,478 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 25 proven. 174 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:47,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:47,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751526232] [2021-12-06 19:23:47,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751526232] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:47,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994479614] [2021-12-06 19:23:47,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:23:47,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:47,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:47,479 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:47,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-06 19:23:47,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-12-06 19:23:47,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:47,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 61 conjunts are in the unsatisfiable core [2021-12-06 19:23:47,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:47,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:23:47,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:23:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 25 proven. 174 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:47,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:48,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:23:48,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:23:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 25 proven. 174 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:48,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994479614] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:48,144 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:48,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 40 [2021-12-06 19:23:48,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915452705] [2021-12-06 19:23:48,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:48,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-06 19:23:48,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:48,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-06 19:23:48,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1438, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 19:23:48,145 INFO L87 Difference]: Start difference. First operand 1314 states and 1449 transitions. Second operand has 40 states, 40 states have (on average 3.7) internal successors, (148), 40 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:49,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:49,055 INFO L93 Difference]: Finished difference Result 2647 states and 2890 transitions. [2021-12-06 19:23:49,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 19:23:49,056 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.7) internal successors, (148), 40 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-12-06 19:23:49,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:49,064 INFO L225 Difference]: With dead ends: 2647 [2021-12-06 19:23:49,064 INFO L226 Difference]: Without dead ends: 2582 [2021-12-06 19:23:49,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 152 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=384, Invalid=3156, Unknown=0, NotChecked=0, Total=3540 [2021-12-06 19:23:49,064 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 851 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:49,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 2709 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1937 Invalid, 0 Unknown, 231 Unchecked, 0.5s Time] [2021-12-06 19:23:49,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2021-12-06 19:23:49,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 1748. [2021-12-06 19:23:49,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1746 states have (on average 1.107101947308133) internal successors, (1933), 1747 states have internal predecessors, (1933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:49,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 1933 transitions. [2021-12-06 19:23:49,084 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 1933 transitions. Word has length 86 [2021-12-06 19:23:49,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:49,084 INFO L470 AbstractCegarLoop]: Abstraction has 1748 states and 1933 transitions. [2021-12-06 19:23:49,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.7) internal successors, (148), 40 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:49,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 1933 transitions. [2021-12-06 19:23:49,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 19:23:49,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:49,086 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:49,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-06 19:23:49,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:49,287 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:23:49,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:49,288 INFO L85 PathProgramCache]: Analyzing trace with hash 777978040, now seen corresponding path program 10 times [2021-12-06 19:23:49,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:49,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702257917] [2021-12-06 19:23:49,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:49,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 45 proven. 179 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:49,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:49,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702257917] [2021-12-06 19:23:49,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702257917] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:49,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832221229] [2021-12-06 19:23:49,474 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:23:49,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:49,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:49,475 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:49,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-06 19:23:49,545 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:23:49,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:49,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-06 19:23:49,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:49,562 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:23:49,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:23:49,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-06 19:23:50,246 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:23:50,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-12-06 19:23:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 72 proven. 152 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:50,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:51,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:23:51,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:23:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 91 proven. 133 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:23:51,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832221229] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:51,983 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:51,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24, 24] total 65 [2021-12-06 19:23:51,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350325901] [2021-12-06 19:23:51,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:51,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-12-06 19:23:51,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:51,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-12-06 19:23:51,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=3867, Unknown=0, NotChecked=0, Total=4290 [2021-12-06 19:23:51,985 INFO L87 Difference]: Start difference. First operand 1748 states and 1933 transitions. Second operand has 66 states, 65 states have (on average 4.030769230769231) internal successors, (262), 66 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:55,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:55,612 INFO L93 Difference]: Finished difference Result 3702 states and 4015 transitions. [2021-12-06 19:23:55,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-12-06 19:23:55,612 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 4.030769230769231) internal successors, (262), 66 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-12-06 19:23:55,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:55,623 INFO L225 Difference]: With dead ends: 3702 [2021-12-06 19:23:55,623 INFO L226 Difference]: Without dead ends: 3582 [2021-12-06 19:23:55,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2472 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3205, Invalid=12545, Unknown=0, NotChecked=0, Total=15750 [2021-12-06 19:23:55,624 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 2144 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3388 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2144 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 3867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 3388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:55,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2144 Valid, 2193 Invalid, 3867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 3388 Invalid, 0 Unknown, 178 Unchecked, 1.2s Time] [2021-12-06 19:23:55,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2021-12-06 19:23:55,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 2052. [2021-12-06 19:23:55,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2050 states have (on average 1.1141463414634147) internal successors, (2284), 2051 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:55,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 2284 transitions. [2021-12-06 19:23:55,657 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 2284 transitions. Word has length 90 [2021-12-06 19:23:55,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:55,657 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 2284 transitions. [2021-12-06 19:23:55,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 4.030769230769231) internal successors, (262), 66 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:55,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 2284 transitions. [2021-12-06 19:23:55,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 19:23:55,659 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:55,659 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:55,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-06 19:23:55,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-12-06 19:23:55,860 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:23:55,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:55,861 INFO L85 PathProgramCache]: Analyzing trace with hash 318466939, now seen corresponding path program 3 times [2021-12-06 19:23:55,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:55,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870978265] [2021-12-06 19:23:55,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:55,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 55 proven. 66 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:23:56,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:56,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870978265] [2021-12-06 19:23:56,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870978265] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:56,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132761151] [2021-12-06 19:23:56,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:23:56,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:56,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:56,403 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:56,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-06 19:23:56,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-06 19:23:56,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:56,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 68 conjunts are in the unsatisfiable core [2021-12-06 19:23:56,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:56,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:23:56,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:23:56,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-06 19:23:57,635 INFO L354 Elim1Store]: treesize reduction 8, result has 27.3 percent of original size [2021-12-06 19:23:57,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2021-12-06 19:23:57,665 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 19:23:57,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:58,325 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_cstrpbrk_~s~0#1.offset| Int) (v_ArrVal_1117 (Array Int Int))) (let ((.cse0 (select v_ArrVal_1117 |ULTIMATE.start_cstrpbrk_~s~0#1.offset|))) (or (not (= .cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_1117) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 3)))) (= .cse0 0)))) is different from false [2021-12-06 19:23:58,330 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:23:58,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2021-12-06 19:23:58,335 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:23:58,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2021-12-06 19:23:58,340 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:23:58,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32 [2021-12-06 19:23:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 7 proven. 113 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 19:23:58,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132761151] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:58,541 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:58,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 21] total 53 [2021-12-06 19:23:58,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017993083] [2021-12-06 19:23:58,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:58,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-12-06 19:23:58,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:58,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-12-06 19:23:58,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2499, Unknown=1, NotChecked=100, Total=2756 [2021-12-06 19:23:58,543 INFO L87 Difference]: Start difference. First operand 2052 states and 2284 transitions. Second operand has 53 states, 53 states have (on average 4.339622641509434) internal successors, (230), 53 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:59,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:59,589 INFO L93 Difference]: Finished difference Result 2380 states and 2647 transitions. [2021-12-06 19:23:59,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 19:23:59,589 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.339622641509434) internal successors, (230), 53 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-12-06 19:23:59,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:59,595 INFO L225 Difference]: With dead ends: 2380 [2021-12-06 19:23:59,595 INFO L226 Difference]: Without dead ends: 1902 [2021-12-06 19:23:59,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=351, Invalid=4763, Unknown=2, NotChecked=140, Total=5256 [2021-12-06 19:23:59,596 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 170 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 369 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:59,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 1311 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 619 Invalid, 0 Unknown, 369 Unchecked, 0.2s Time] [2021-12-06 19:23:59,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2021-12-06 19:23:59,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1625. [2021-12-06 19:23:59,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1623 states have (on average 1.119531731361676) internal successors, (1817), 1624 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:59,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 1817 transitions. [2021-12-06 19:23:59,610 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 1817 transitions. Word has length 90 [2021-12-06 19:23:59,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:59,610 INFO L470 AbstractCegarLoop]: Abstraction has 1625 states and 1817 transitions. [2021-12-06 19:23:59,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.339622641509434) internal successors, (230), 53 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:59,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 1817 transitions. [2021-12-06 19:23:59,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 19:23:59,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:59,611 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:59,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-12-06 19:23:59,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-12-06 19:23:59,811 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:23:59,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:59,812 INFO L85 PathProgramCache]: Analyzing trace with hash 422434722, now seen corresponding path program 6 times [2021-12-06 19:23:59,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:59,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615933558] [2021-12-06 19:23:59,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:59,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 25 proven. 155 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:23:59,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:59,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615933558] [2021-12-06 19:23:59,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615933558] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:59,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731236554] [2021-12-06 19:23:59,993 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:23:59,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:59,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:59,994 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:59,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-06 19:24:00,146 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-06 19:24:00,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:24:00,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-06 19:24:00,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:24:00,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:24:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 25 proven. 155 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:24:00,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:24:00,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:24:00,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:24:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 25 proven. 155 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:24:00,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731236554] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:24:00,729 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:24:00,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 39 [2021-12-06 19:24:00,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469679968] [2021-12-06 19:24:00,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:24:00,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-06 19:24:00,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:24:00,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-06 19:24:00,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1360, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 19:24:00,730 INFO L87 Difference]: Start difference. First operand 1625 states and 1817 transitions. Second operand has 39 states, 39 states have (on average 4.435897435897436) internal successors, (173), 39 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:01,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:24:01,405 INFO L93 Difference]: Finished difference Result 2189 states and 2410 transitions. [2021-12-06 19:24:01,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 19:24:01,405 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.435897435897436) internal successors, (173), 39 states have internal predecessors, (173), 0 states have call successors, (0), 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 93 [2021-12-06 19:24:01,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:24:01,412 INFO L225 Difference]: With dead ends: 2189 [2021-12-06 19:24:01,412 INFO L226 Difference]: Without dead ends: 2134 [2021-12-06 19:24:01,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 165 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=354, Invalid=2726, Unknown=0, NotChecked=0, Total=3080 [2021-12-06 19:24:01,412 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 680 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:24:01,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 2046 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1389 Invalid, 0 Unknown, 152 Unchecked, 0.4s Time] [2021-12-06 19:24:01,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2021-12-06 19:24:01,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 1780. [2021-12-06 19:24:01,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1780 states, 1778 states have (on average 1.1181102362204725) internal successors, (1988), 1779 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:01,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 1988 transitions. [2021-12-06 19:24:01,431 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 1988 transitions. Word has length 93 [2021-12-06 19:24:01,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:24:01,431 INFO L470 AbstractCegarLoop]: Abstraction has 1780 states and 1988 transitions. [2021-12-06 19:24:01,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.435897435897436) internal successors, (173), 39 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:01,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 1988 transitions. [2021-12-06 19:24:01,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-06 19:24:01,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:24:01,433 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:24:01,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-12-06 19:24:01,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-12-06 19:24:01,634 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:24:01,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:24:01,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1725290594, now seen corresponding path program 8 times [2021-12-06 19:24:01,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:24:01,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197861247] [2021-12-06 19:24:01,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:24:01,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:24:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:24:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 9 proven. 154 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:24:01,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:24:01,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197861247] [2021-12-06 19:24:01,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197861247] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:24:01,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992743210] [2021-12-06 19:24:01,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:24:01,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:24:01,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:24:01,980 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:24:01,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-06 19:24:02,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:24:02,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:24:02,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-06 19:24:02,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:24:02,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:24:02,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:24:02,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-06 19:24:02,852 INFO L354 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2021-12-06 19:24:02,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 23 [2021-12-06 19:24:02,877 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 9 proven. 154 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:24:02,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:24:03,429 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1208 (Array Int Int)) (|v_ULTIMATE.start_cstrpbrk_~sc1~0#1.offset_102| Int)) (or (< |v_ULTIMATE.start_cstrpbrk_~sc1~0#1.offset_102| 0) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_1208) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |v_ULTIMATE.start_cstrpbrk_~sc1~0#1.offset_102| 4)) 0) (< |c_ULTIMATE.start_main_~nondetString1~0#1.offset| |v_ULTIMATE.start_cstrpbrk_~sc1~0#1.offset_102|))) is different from false [2021-12-06 19:24:03,438 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:24:03,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 19:24:03,443 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:24:03,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2021-12-06 19:24:03,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:24:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 9 proven. 154 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:24:03,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992743210] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:24:03,948 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:24:03,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 63 [2021-12-06 19:24:03,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018455709] [2021-12-06 19:24:03,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:24:03,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-12-06 19:24:03,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:24:03,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-12-06 19:24:03,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=3595, Unknown=1, NotChecked=120, Total=3906 [2021-12-06 19:24:03,950 INFO L87 Difference]: Start difference. First operand 1780 states and 1988 transitions. Second operand has 63 states, 63 states have (on average 4.174603174603175) internal successors, (263), 63 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:05,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:24:05,356 INFO L93 Difference]: Finished difference Result 3424 states and 3806 transitions. [2021-12-06 19:24:05,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-06 19:24:05,357 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.174603174603175) internal successors, (263), 63 states have internal predecessors, (263), 0 states have call successors, (0), 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 97 [2021-12-06 19:24:05,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:24:05,368 INFO L225 Difference]: With dead ends: 3424 [2021-12-06 19:24:05,368 INFO L226 Difference]: Without dead ends: 3343 [2021-12-06 19:24:05,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 155 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=455, Invalid=7204, Unknown=1, NotChecked=172, Total=7832 [2021-12-06 19:24:05,368 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 252 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 2998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 896 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:24:05,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 2417 Invalid, 2998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2080 Invalid, 0 Unknown, 896 Unchecked, 0.6s Time] [2021-12-06 19:24:05,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2021-12-06 19:24:05,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 2869. [2021-12-06 19:24:05,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2867 states have (on average 1.1171956749215208) internal successors, (3203), 2868 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:05,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 3203 transitions. [2021-12-06 19:24:05,393 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 3203 transitions. Word has length 97 [2021-12-06 19:24:05,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:24:05,393 INFO L470 AbstractCegarLoop]: Abstraction has 2869 states and 3203 transitions. [2021-12-06 19:24:05,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.174603174603175) internal successors, (263), 63 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:05,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 3203 transitions. [2021-12-06 19:24:05,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 19:24:05,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:24:05,395 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:24:05,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-12-06 19:24:05,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-12-06 19:24:05,596 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:24:05,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:24:05,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1522113074, now seen corresponding path program 7 times [2021-12-06 19:24:05,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:24:05,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055827476] [2021-12-06 19:24:05,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:24:05,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:24:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:24:05,810 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 29 proven. 188 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 19:24:05,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:24:05,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055827476] [2021-12-06 19:24:05,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055827476] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:24:05,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002108614] [2021-12-06 19:24:05,811 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:24:05,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:24:05,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:24:05,811 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:24:05,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-06 19:24:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:24:05,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-06 19:24:05,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:24:05,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:24:07,030 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:24:07,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-12-06 19:24:07,187 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 28 proven. 189 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 19:24:07,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:24:07,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:24:07,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:24:07,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:24:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 28 proven. 189 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 19:24:07,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002108614] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:24:07,929 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:24:07,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2021-12-06 19:24:07,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138370287] [2021-12-06 19:24:07,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:24:07,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-12-06 19:24:07,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:24:07,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-12-06 19:24:07,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=2541, Unknown=0, NotChecked=0, Total=2756 [2021-12-06 19:24:07,931 INFO L87 Difference]: Start difference. First operand 2869 states and 3203 transitions. Second operand has 53 states, 53 states have (on average 4.339622641509434) internal successors, (230), 53 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:09,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:24:09,784 INFO L93 Difference]: Finished difference Result 3296 states and 3627 transitions. [2021-12-06 19:24:09,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-12-06 19:24:09,785 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.339622641509434) internal successors, (230), 53 states have internal predecessors, (230), 0 states have call successors, (0), 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 99 [2021-12-06 19:24:09,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:24:09,789 INFO L225 Difference]: With dead ends: 3296 [2021-12-06 19:24:09,789 INFO L226 Difference]: Without dead ends: 3111 [2021-12-06 19:24:09,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 205 SyntacticMatches, 6 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=641, Invalid=7015, Unknown=0, NotChecked=0, Total=7656 [2021-12-06 19:24:09,790 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 520 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 299 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:24:09,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 1983 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1773 Invalid, 0 Unknown, 299 Unchecked, 0.5s Time] [2021-12-06 19:24:09,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2021-12-06 19:24:09,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 2416. [2021-12-06 19:24:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2416 states, 2414 states have (on average 1.111847555923778) internal successors, (2684), 2415 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:09,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 2684 transitions. [2021-12-06 19:24:09,812 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 2684 transitions. Word has length 99 [2021-12-06 19:24:09,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:24:09,812 INFO L470 AbstractCegarLoop]: Abstraction has 2416 states and 2684 transitions. [2021-12-06 19:24:09,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.339622641509434) internal successors, (230), 53 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:09,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 2684 transitions. [2021-12-06 19:24:09,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 19:24:09,814 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:24:09,814 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:24:09,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-12-06 19:24:10,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-12-06 19:24:10,015 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:24:10,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:24:10,017 INFO L85 PathProgramCache]: Analyzing trace with hash -824280031, now seen corresponding path program 9 times [2021-12-06 19:24:10,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:24:10,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302227667] [2021-12-06 19:24:10,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:24:10,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:24:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:24:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 15 proven. 165 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:24:10,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:24:10,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302227667] [2021-12-06 19:24:10,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302227667] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:24:10,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506990818] [2021-12-06 19:24:10,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:24:10,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:24:10,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:24:10,170 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:24:10,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-06 19:24:10,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-06 19:24:10,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:24:10,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-06 19:24:10,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:24:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 28 proven. 152 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:24:10,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:24:10,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:24:11,015 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 45 proven. 135 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:24:11,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506990818] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:24:11,015 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:24:11,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 36 [2021-12-06 19:24:11,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302798460] [2021-12-06 19:24:11,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:24:11,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 19:24:11,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:24:11,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 19:24:11,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1139, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 19:24:11,016 INFO L87 Difference]: Start difference. First operand 2416 states and 2684 transitions. Second operand has 37 states, 36 states have (on average 7.5) internal successors, (270), 37 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:24:11,543 INFO L93 Difference]: Finished difference Result 3246 states and 3594 transitions. [2021-12-06 19:24:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 19:24:11,544 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 7.5) internal successors, (270), 37 states have internal predecessors, (270), 0 states have call successors, (0), 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 101 [2021-12-06 19:24:11,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:24:11,548 INFO L225 Difference]: With dead ends: 3246 [2021-12-06 19:24:11,548 INFO L226 Difference]: Without dead ends: 3246 [2021-12-06 19:24:11,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=566, Invalid=2190, Unknown=0, NotChecked=0, Total=2756 [2021-12-06 19:24:11,549 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 816 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:24:11,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 828 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:24:11,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2021-12-06 19:24:11,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2640. [2021-12-06 19:24:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 2638 states have (on average 1.1118271417740713) internal successors, (2933), 2639 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:11,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 2933 transitions. [2021-12-06 19:24:11,574 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 2933 transitions. Word has length 101 [2021-12-06 19:24:11,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:24:11,575 INFO L470 AbstractCegarLoop]: Abstraction has 2640 states and 2933 transitions. [2021-12-06 19:24:11,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 7.5) internal successors, (270), 37 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:11,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 2933 transitions. [2021-12-06 19:24:11,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-06 19:24:11,577 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:24:11,577 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:24:11,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-12-06 19:24:11,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-12-06 19:24:11,778 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:24:11,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:24:11,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1695966432, now seen corresponding path program 11 times [2021-12-06 19:24:11,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:24:11,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596670900] [2021-12-06 19:24:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:24:11,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:24:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:24:12,033 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 182 proven. 134 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:24:12,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:24:12,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596670900] [2021-12-06 19:24:12,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596670900] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:24:12,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630525806] [2021-12-06 19:24:12,033 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:24:12,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:24:12,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:24:12,034 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:24:12,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-06 19:24:12,142 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-12-06 19:24:12,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:24:12,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-06 19:24:12,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:24:12,157 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:24:12,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:24:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 225 proven. 91 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:24:12,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:24:13,041 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 225 proven. 91 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:24:13,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630525806] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:24:13,041 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:24:13,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 54 [2021-12-06 19:24:13,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149141854] [2021-12-06 19:24:13,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:24:13,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-12-06 19:24:13,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:24:13,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-12-06 19:24:13,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=2419, Unknown=0, NotChecked=0, Total=2862 [2021-12-06 19:24:13,043 INFO L87 Difference]: Start difference. First operand 2640 states and 2933 transitions. Second operand has 54 states, 54 states have (on average 4.5) internal successors, (243), 54 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:14,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:24:14,733 INFO L93 Difference]: Finished difference Result 5026 states and 5430 transitions. [2021-12-06 19:24:14,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-12-06 19:24:14,733 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.5) internal successors, (243), 54 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-12-06 19:24:14,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:24:14,737 INFO L225 Difference]: With dead ends: 5026 [2021-12-06 19:24:14,737 INFO L226 Difference]: Without dead ends: 4768 [2021-12-06 19:24:14,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3055 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2613, Invalid=8943, Unknown=0, NotChecked=0, Total=11556 [2021-12-06 19:24:14,738 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 1777 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1777 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:24:14,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1777 Valid, 1195 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:24:14,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4768 states. [2021-12-06 19:24:14,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4768 to 3227. [2021-12-06 19:24:14,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3227 states, 3225 states have (on average 1.114108527131783) internal successors, (3593), 3226 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:14,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 3593 transitions. [2021-12-06 19:24:14,768 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 3593 transitions. Word has length 102 [2021-12-06 19:24:14,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:24:14,768 INFO L470 AbstractCegarLoop]: Abstraction has 3227 states and 3593 transitions. [2021-12-06 19:24:14,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.5) internal successors, (243), 54 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:14,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 3593 transitions. [2021-12-06 19:24:14,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 19:24:14,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:24:14,771 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:24:14,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-12-06 19:24:14,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:24:14,972 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:24:14,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:24:14,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1737904387, now seen corresponding path program 12 times [2021-12-06 19:24:14,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:24:14,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595316250] [2021-12-06 19:24:14,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:24:14,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:24:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:24:15,251 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 33 proven. 312 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:24:15,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:24:15,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595316250] [2021-12-06 19:24:15,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595316250] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:24:15,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927677667] [2021-12-06 19:24:15,252 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:24:15,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:24:15,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:24:15,252 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:24:15,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-12-06 19:24:15,441 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-12-06 19:24:15,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:24:15,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 73 conjunts are in the unsatisfiable core [2021-12-06 19:24:15,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:24:15,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:24:15,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:24:15,801 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 33 proven. 312 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:24:15,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:24:15,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:24:15,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:24:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 33 proven. 312 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:24:16,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927677667] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:24:16,060 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:24:16,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 46 [2021-12-06 19:24:16,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989650997] [2021-12-06 19:24:16,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:24:16,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-06 19:24:16,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:24:16,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-06 19:24:16,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1932, Unknown=0, NotChecked=0, Total=2070 [2021-12-06 19:24:16,061 INFO L87 Difference]: Start difference. First operand 3227 states and 3593 transitions. Second operand has 46 states, 46 states have (on average 3.8260869565217392) internal successors, (176), 46 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:17,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:24:17,591 INFO L93 Difference]: Finished difference Result 4772 states and 5248 transitions. [2021-12-06 19:24:17,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-06 19:24:17,591 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.8260869565217392) internal successors, (176), 46 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-06 19:24:17,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:24:17,595 INFO L225 Difference]: With dead ends: 4772 [2021-12-06 19:24:17,595 INFO L226 Difference]: Without dead ends: 4488 [2021-12-06 19:24:17,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 190 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=476, Invalid=4216, Unknown=0, NotChecked=0, Total=4692 [2021-12-06 19:24:17,596 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 902 mSDsluCounter, 4458 mSDsCounter, 0 mSdLazyCounter, 3551 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 4647 SdHoareTripleChecker+Invalid, 3713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:24:17,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [902 Valid, 4647 Invalid, 3713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3551 Invalid, 0 Unknown, 93 Unchecked, 1.0s Time] [2021-12-06 19:24:17,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4488 states. [2021-12-06 19:24:17,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4488 to 3247. [2021-12-06 19:24:17,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3247 states, 3245 states have (on average 1.1140215716486903) internal successors, (3615), 3246 states have internal predecessors, (3615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:17,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 3615 transitions. [2021-12-06 19:24:17,628 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 3615 transitions. Word has length 106 [2021-12-06 19:24:17,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:24:17,628 INFO L470 AbstractCegarLoop]: Abstraction has 3247 states and 3615 transitions. [2021-12-06 19:24:17,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.8260869565217392) internal successors, (176), 46 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:17,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 3615 transitions. [2021-12-06 19:24:17,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 19:24:17,630 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:24:17,630 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:24:17,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-12-06 19:24:17,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:24:17,831 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:24:17,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:24:17,832 INFO L85 PathProgramCache]: Analyzing trace with hash -209651763, now seen corresponding path program 4 times [2021-12-06 19:24:17,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:24:17,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217865523] [2021-12-06 19:24:17,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:24:17,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:24:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:24:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 73 proven. 114 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 19:24:18,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:24:18,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217865523] [2021-12-06 19:24:18,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217865523] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:24:18,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914958891] [2021-12-06 19:24:18,028 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:24:18,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:24:18,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:24:18,029 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:24:18,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-12-06 19:24:18,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:24:18,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:24:18,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 57 conjunts are in the unsatisfiable core [2021-12-06 19:24:18,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:24:18,142 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:24:18,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:24:18,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:24:18,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:24:18,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 19:24:18,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:24:19,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:24:19,357 INFO L354 Elim1Store]: treesize reduction 15, result has 50.0 percent of original size [2021-12-06 19:24:19,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 28 [2021-12-06 19:24:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 96 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 19:24:19,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:24:20,117 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:24:20,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2021-12-06 19:24:20,121 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:24:20,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2021-12-06 19:24:20,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-06 19:24:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 84 proven. 108 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 19:24:20,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914958891] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:24:20,713 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:24:20,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23, 23] total 57 [2021-12-06 19:24:20,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144636031] [2021-12-06 19:24:20,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:24:20,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-12-06 19:24:20,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:24:20,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-12-06 19:24:20,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2962, Unknown=5, NotChecked=0, Total=3192 [2021-12-06 19:24:20,714 INFO L87 Difference]: Start difference. First operand 3247 states and 3615 transitions. Second operand has 57 states, 57 states have (on average 5.12280701754386) internal successors, (292), 57 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:21,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:24:21,479 INFO L93 Difference]: Finished difference Result 3374 states and 3747 transitions. [2021-12-06 19:24:21,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 19:24:21,479 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.12280701754386) internal successors, (292), 57 states have internal predecessors, (292), 0 states have call successors, (0), 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 107 [2021-12-06 19:24:21,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:24:21,482 INFO L225 Difference]: With dead ends: 3374 [2021-12-06 19:24:21,482 INFO L226 Difference]: Without dead ends: 2535 [2021-12-06 19:24:21,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 179 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1072 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=493, Invalid=5508, Unknown=5, NotChecked=0, Total=6006 [2021-12-06 19:24:21,482 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 257 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 378 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:24:21,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 1616 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 520 Invalid, 0 Unknown, 378 Unchecked, 0.2s Time] [2021-12-06 19:24:21,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2535 states. [2021-12-06 19:24:21,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2535 to 2169. [2021-12-06 19:24:21,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2167 states have (on average 1.1139824642362715) internal successors, (2414), 2168 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:21,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 2414 transitions. [2021-12-06 19:24:21,500 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 2414 transitions. Word has length 107 [2021-12-06 19:24:21,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:24:21,500 INFO L470 AbstractCegarLoop]: Abstraction has 2169 states and 2414 transitions. [2021-12-06 19:24:21,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.12280701754386) internal successors, (292), 57 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:21,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 2414 transitions. [2021-12-06 19:24:21,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 19:24:21,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:24:21,502 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:24:21,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-12-06 19:24:21,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:24:21,702 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:24:21,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:24:21,703 INFO L85 PathProgramCache]: Analyzing trace with hash -23027046, now seen corresponding path program 13 times [2021-12-06 19:24:21,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:24:21,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049991427] [2021-12-06 19:24:21,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:24:21,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:24:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:24:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 91 proven. 287 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:24:21,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:24:21,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049991427] [2021-12-06 19:24:21,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049991427] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:24:21,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162275771] [2021-12-06 19:24:21,995 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:24:21,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:24:21,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:24:21,996 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:24:21,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-06 19:24:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:24:22,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 63 conjunts are in the unsatisfiable core [2021-12-06 19:24:22,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:24:22,096 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:24:22,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:24:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 120 proven. 258 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:24:22,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:24:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 153 proven. 225 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:24:23,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162275771] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:24:23,613 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:24:23,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 24] total 68 [2021-12-06 19:24:23,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858037824] [2021-12-06 19:24:23,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:24:23,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-12-06 19:24:23,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:24:23,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-12-06 19:24:23,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=4193, Unknown=0, NotChecked=0, Total=4692 [2021-12-06 19:24:23,614 INFO L87 Difference]: Start difference. First operand 2169 states and 2414 transitions. Second operand has 69 states, 68 states have (on average 4.676470588235294) internal successors, (318), 69 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:25,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:24:25,725 INFO L93 Difference]: Finished difference Result 3254 states and 3570 transitions. [2021-12-06 19:24:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-12-06 19:24:25,725 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 4.676470588235294) internal successors, (318), 69 states have internal predecessors, (318), 0 states have call successors, (0), 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 110 [2021-12-06 19:24:25,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:24:25,728 INFO L225 Difference]: With dead ends: 3254 [2021-12-06 19:24:25,728 INFO L226 Difference]: Without dead ends: 3254 [2021-12-06 19:24:25,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2184 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2078, Invalid=8842, Unknown=0, NotChecked=0, Total=10920 [2021-12-06 19:24:25,729 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 1374 mSDsluCounter, 2393 mSDsCounter, 0 mSdLazyCounter, 3724 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 3837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 3724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:24:25,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 2513 Invalid, 3837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 3724 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 19:24:25,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2021-12-06 19:24:25,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 2229. [2021-12-06 19:24:25,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 2227 states have (on average 1.1149528513695555) internal successors, (2483), 2228 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 2483 transitions. [2021-12-06 19:24:25,753 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 2483 transitions. Word has length 110 [2021-12-06 19:24:25,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:24:25,753 INFO L470 AbstractCegarLoop]: Abstraction has 2229 states and 2483 transitions. [2021-12-06 19:24:25,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 4.676470588235294) internal successors, (318), 69 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:25,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 2483 transitions. [2021-12-06 19:24:25,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-06 19:24:25,755 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:24:25,755 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:24:25,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-12-06 19:24:25,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-12-06 19:24:25,956 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:24:25,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:24:25,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1378974092, now seen corresponding path program 10 times [2021-12-06 19:24:25,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:24:25,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120271878] [2021-12-06 19:24:25,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:24:25,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:24:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:24:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 11 proven. 235 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:24:26,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:24:26,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120271878] [2021-12-06 19:24:26,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120271878] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:24:26,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637032991] [2021-12-06 19:24:26,306 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:24:26,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:24:26,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:24:26,307 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:24:26,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-12-06 19:24:26,402 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:24:26,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:24:26,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 91 conjunts are in the unsatisfiable core [2021-12-06 19:24:26,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:24:26,422 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:24:26,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:24:26,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:24:26,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:24:26,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-06 19:24:43,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:24:44,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:24:44,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:24:44,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 17 [2021-12-06 19:24:44,752 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 123 proven. 122 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:24:44,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:24:46,549 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:24:46,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 38 [2021-12-06 19:24:46,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:24:46,558 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:24:46,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 75 [2021-12-06 19:24:46,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:24:46,569 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:24:46,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 56 [2021-12-06 19:24:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 129 proven. 117 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:24:47,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637032991] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:24:47,845 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:24:47,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29, 30] total 77 [2021-12-06 19:24:47,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993082847] [2021-12-06 19:24:47,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:24:47,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-12-06 19:24:47,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:24:47,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-12-06 19:24:47,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=5410, Unknown=2, NotChecked=0, Total=5852 [2021-12-06 19:24:47,847 INFO L87 Difference]: Start difference. First operand 2229 states and 2483 transitions. Second operand has 77 states, 77 states have (on average 4.142857142857143) internal successors, (319), 77 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:25:54,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:25:54,239 INFO L93 Difference]: Finished difference Result 4812 states and 5330 transitions. [2021-12-06 19:25:54,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-12-06 19:25:54,240 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 4.142857142857143) internal successors, (319), 77 states have internal predecessors, (319), 0 states have call successors, (0), 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 114 [2021-12-06 19:25:54,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:25:54,247 INFO L225 Difference]: With dead ends: 4812 [2021-12-06 19:25:54,247 INFO L226 Difference]: Without dead ends: 4706 [2021-12-06 19:25:54,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 185 SyntacticMatches, 12 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6007 ImplicationChecksByTransitivity, 83.6s TimeCoverageRelationStatistics Valid=1996, Invalid=21246, Unknown=14, NotChecked=0, Total=23256 [2021-12-06 19:25:54,249 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 370 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1051 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:25:54,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 2129 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 786 Invalid, 0 Unknown, 1051 Unchecked, 0.3s Time] [2021-12-06 19:25:54,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2021-12-06 19:25:54,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 4428. [2021-12-06 19:25:54,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 4426 states have (on average 1.1120650700406687) internal successors, (4922), 4427 states have internal predecessors, (4922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:25:54,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 4922 transitions. [2021-12-06 19:25:54,296 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 4922 transitions. Word has length 114 [2021-12-06 19:25:54,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:25:54,296 INFO L470 AbstractCegarLoop]: Abstraction has 4428 states and 4922 transitions. [2021-12-06 19:25:54,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 4.142857142857143) internal successors, (319), 77 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:25:54,296 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 4922 transitions. [2021-12-06 19:25:54,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-06 19:25:54,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:25:54,299 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:25:54,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-12-06 19:25:54,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-12-06 19:25:54,499 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:25:54,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:25:54,499 INFO L85 PathProgramCache]: Analyzing trace with hash 772743854, now seen corresponding path program 14 times [2021-12-06 19:25:54,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:25:54,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21837864] [2021-12-06 19:25:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:25:54,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:25:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 37 proven. 396 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:25:54,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:25:54,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21837864] [2021-12-06 19:25:54,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21837864] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:25:54,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423154689] [2021-12-06 19:25:54,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:25:54,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:25:54,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:25:54,807 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:25:54,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-12-06 19:25:54,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:25:54,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:25:54,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 72 conjunts are in the unsatisfiable core [2021-12-06 19:25:54,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:25:55,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:25:56,501 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:25:56,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-12-06 19:25:56,693 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 120 proven. 313 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:25:56,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:25:57,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:25:57,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:25:57,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:25:57,828 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 120 proven. 313 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:25:57,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423154689] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:25:57,829 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:25:57,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 73 [2021-12-06 19:25:57,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731177770] [2021-12-06 19:25:57,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:25:57,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-12-06 19:25:57,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:25:57,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-12-06 19:25:57,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=4887, Unknown=0, NotChecked=0, Total=5256 [2021-12-06 19:25:57,830 INFO L87 Difference]: Start difference. First operand 4428 states and 4922 transitions. Second operand has 73 states, 73 states have (on average 4.041095890410959) internal successors, (295), 73 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:04,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:26:04,540 INFO L93 Difference]: Finished difference Result 6490 states and 7182 transitions. [2021-12-06 19:26:04,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-12-06 19:26:04,541 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 4.041095890410959) internal successors, (295), 73 states have internal predecessors, (295), 0 states have call successors, (0), 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 116 [2021-12-06 19:26:04,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:26:04,544 INFO L225 Difference]: With dead ends: 6490 [2021-12-06 19:26:04,544 INFO L226 Difference]: Without dead ends: 6411 [2021-12-06 19:26:04,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 207 SyntacticMatches, 4 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2499 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=717, Invalid=9183, Unknown=0, NotChecked=0, Total=9900 [2021-12-06 19:26:04,545 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 1007 mSDsluCounter, 5025 mSDsCounter, 0 mSdLazyCounter, 4881 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 5206 SdHoareTripleChecker+Invalid, 6105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 4881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1169 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:26:04,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1007 Valid, 5206 Invalid, 6105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 4881 Invalid, 0 Unknown, 1169 Unchecked, 1.6s Time] [2021-12-06 19:26:04,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2021-12-06 19:26:04,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 4805. [2021-12-06 19:26:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4805 states, 4803 states have (on average 1.11367895065584) internal successors, (5349), 4804 states have internal predecessors, (5349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:04,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4805 states to 4805 states and 5349 transitions. [2021-12-06 19:26:04,593 INFO L78 Accepts]: Start accepts. Automaton has 4805 states and 5349 transitions. Word has length 116 [2021-12-06 19:26:04,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:26:04,593 INFO L470 AbstractCegarLoop]: Abstraction has 4805 states and 5349 transitions. [2021-12-06 19:26:04,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 4.041095890410959) internal successors, (295), 73 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:04,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4805 states and 5349 transitions. [2021-12-06 19:26:04,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 19:26:04,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:26:04,596 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:26:04,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-12-06 19:26:04,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:04,797 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:26:04,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:26:04,798 INFO L85 PathProgramCache]: Analyzing trace with hash 802577257, now seen corresponding path program 11 times [2021-12-06 19:26:04,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:26:04,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051884783] [2021-12-06 19:26:04,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:26:04,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:26:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 28 proven. 239 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:04,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:26:04,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051884783] [2021-12-06 19:26:04,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051884783] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:26:04,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586813169] [2021-12-06 19:26:04,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:26:04,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:04,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:26:04,988 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:26:04,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-12-06 19:26:05,098 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-12-06 19:26:05,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:26:05,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-06 19:26:05,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:26:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 45 proven. 222 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:05,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:26:05,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-12-06 19:26:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 45 proven. 222 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:06,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586813169] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:26:06,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:26:06,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 40 [2021-12-06 19:26:06,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420546650] [2021-12-06 19:26:06,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:26:06,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-06 19:26:06,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:26:06,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-06 19:26:06,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1416, Unknown=0, NotChecked=0, Total=1640 [2021-12-06 19:26:06,020 INFO L87 Difference]: Start difference. First operand 4805 states and 5349 transitions. Second operand has 41 states, 40 states have (on average 7.0) internal successors, (280), 41 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:06,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:26:06,755 INFO L93 Difference]: Finished difference Result 7008 states and 7801 transitions. [2021-12-06 19:26:06,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 19:26:06,756 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 7.0) internal successors, (280), 41 states have internal predecessors, (280), 0 states have call successors, (0), 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 118 [2021-12-06 19:26:06,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:26:06,759 INFO L225 Difference]: With dead ends: 7008 [2021-12-06 19:26:06,759 INFO L226 Difference]: Without dead ends: 7008 [2021-12-06 19:26:06,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=652, Invalid=2428, Unknown=0, NotChecked=0, Total=3080 [2021-12-06 19:26:06,760 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 717 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:26:06,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 1538 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:26:06,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7008 states. [2021-12-06 19:26:06,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7008 to 5090. [2021-12-06 19:26:06,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5090 states, 5088 states have (on average 1.1137971698113207) internal successors, (5667), 5089 states have internal predecessors, (5667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:06,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5090 states to 5090 states and 5667 transitions. [2021-12-06 19:26:06,811 INFO L78 Accepts]: Start accepts. Automaton has 5090 states and 5667 transitions. Word has length 118 [2021-12-06 19:26:06,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:26:06,811 INFO L470 AbstractCegarLoop]: Abstraction has 5090 states and 5667 transitions. [2021-12-06 19:26:06,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 7.0) internal successors, (280), 41 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:06,811 INFO L276 IsEmpty]: Start isEmpty. Operand 5090 states and 5667 transitions. [2021-12-06 19:26:06,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 19:26:06,815 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:26:06,815 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:26:06,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-12-06 19:26:07,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:07,016 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:26:07,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:26:07,017 INFO L85 PathProgramCache]: Analyzing trace with hash -772988267, now seen corresponding path program 5 times [2021-12-06 19:26:07,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:26:07,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53499979] [2021-12-06 19:26:07,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:26:07,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:26:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:07,269 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 91 proven. 185 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 19:26:07,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:26:07,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53499979] [2021-12-06 19:26:07,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53499979] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:26:07,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166462086] [2021-12-06 19:26:07,270 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:26:07,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:07,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:26:07,271 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:26:07,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-12-06 19:26:07,412 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-12-06 19:26:07,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:26:07,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 81 conjunts are in the unsatisfiable core [2021-12-06 19:26:07,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:26:07,433 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:26:07,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:26:07,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:26:07,867 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:26:07,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2021-12-06 19:26:07,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 3 [2021-12-06 19:26:09,644 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:26:09,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2021-12-06 19:26:10,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:26:10,390 INFO L354 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2021-12-06 19:26:10,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 26 [2021-12-06 19:26:10,426 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 16 proven. 271 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:10,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:26:11,173 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:26:11,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 19:26:11,178 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:26:11,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2021-12-06 19:26:11,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:26:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 11 proven. 276 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:12,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166462086] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:26:12,328 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:26:12,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 30, 29] total 71 [2021-12-06 19:26:12,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31544715] [2021-12-06 19:26:12,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:26:12,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-12-06 19:26:12,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:26:12,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-12-06 19:26:12,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=4733, Unknown=1, NotChecked=0, Total=4970 [2021-12-06 19:26:12,329 INFO L87 Difference]: Start difference. First operand 5090 states and 5667 transitions. Second operand has 71 states, 71 states have (on average 4.774647887323944) internal successors, (339), 71 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:15,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:26:15,233 INFO L93 Difference]: Finished difference Result 5945 states and 6573 transitions. [2021-12-06 19:26:15,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-06 19:26:15,233 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.774647887323944) internal successors, (339), 71 states have internal predecessors, (339), 0 states have call successors, (0), 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 124 [2021-12-06 19:26:15,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:26:15,235 INFO L225 Difference]: With dead ends: 5945 [2021-12-06 19:26:15,236 INFO L226 Difference]: Without dead ends: 3941 [2021-12-06 19:26:15,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 199 SyntacticMatches, 9 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2031 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=563, Invalid=10148, Unknown=1, NotChecked=0, Total=10712 [2021-12-06 19:26:15,236 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 725 mSDsluCounter, 4344 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 4464 SdHoareTripleChecker+Invalid, 4960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2087 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:26:15,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [725 Valid, 4464 Invalid, 4960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2855 Invalid, 0 Unknown, 2087 Unchecked, 0.9s Time] [2021-12-06 19:26:15,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2021-12-06 19:26:15,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3008. [2021-12-06 19:26:15,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3006 states have (on average 1.117099135063207) internal successors, (3358), 3007 states have internal predecessors, (3358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 3358 transitions. [2021-12-06 19:26:15,265 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 3358 transitions. Word has length 124 [2021-12-06 19:26:15,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:26:15,265 INFO L470 AbstractCegarLoop]: Abstraction has 3008 states and 3358 transitions. [2021-12-06 19:26:15,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.774647887323944) internal successors, (339), 71 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:15,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 3358 transitions. [2021-12-06 19:26:15,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-06 19:26:15,267 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:26:15,267 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:26:15,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-12-06 19:26:15,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-12-06 19:26:15,469 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:26:15,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:26:15,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1028104865, now seen corresponding path program 15 times [2021-12-06 19:26:15,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:26:15,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899307528] [2021-12-06 19:26:15,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:26:15,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:26:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:15,815 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 41 proven. 490 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:15,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:26:15,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899307528] [2021-12-06 19:26:15,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899307528] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:26:15,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921891844] [2021-12-06 19:26:15,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:26:15,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:15,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:26:15,816 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:26:15,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-12-06 19:26:16,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-12-06 19:26:16,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:26:16,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 85 conjunts are in the unsatisfiable core [2021-12-06 19:26:16,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:26:16,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:26:16,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:26:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 41 proven. 490 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:16,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:26:16,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:26:16,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:26:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 41 proven. 490 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:16,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921891844] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:26:16,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:26:16,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 52 [2021-12-06 19:26:16,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502215901] [2021-12-06 19:26:16,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:26:16,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-06 19:26:16,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:26:16,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-06 19:26:16,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2498, Unknown=0, NotChecked=0, Total=2652 [2021-12-06 19:26:16,957 INFO L87 Difference]: Start difference. First operand 3008 states and 3358 transitions. Second operand has 52 states, 52 states have (on average 3.923076923076923) internal successors, (204), 52 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:19,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:26:19,237 INFO L93 Difference]: Finished difference Result 6630 states and 7384 transitions. [2021-12-06 19:26:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-06 19:26:19,238 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.923076923076923) internal successors, (204), 52 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-12-06 19:26:19,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:26:19,241 INFO L225 Difference]: With dead ends: 6630 [2021-12-06 19:26:19,242 INFO L226 Difference]: Without dead ends: 6533 [2021-12-06 19:26:19,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 1233 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=498, Invalid=5664, Unknown=0, NotChecked=0, Total=6162 [2021-12-06 19:26:19,242 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 813 mSDsluCounter, 7138 mSDsCounter, 0 mSdLazyCounter, 5075 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 7385 SdHoareTripleChecker+Invalid, 5402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 5075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 291 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:26:19,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [813 Valid, 7385 Invalid, 5402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 5075 Invalid, 0 Unknown, 291 Unchecked, 1.5s Time] [2021-12-06 19:26:19,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6533 states. [2021-12-06 19:26:19,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6533 to 3772. [2021-12-06 19:26:19,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3772 states, 3770 states have (on average 1.120159151193634) internal successors, (4223), 3771 states have internal predecessors, (4223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3772 states to 3772 states and 4223 transitions. [2021-12-06 19:26:19,281 INFO L78 Accepts]: Start accepts. Automaton has 3772 states and 4223 transitions. Word has length 126 [2021-12-06 19:26:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:26:19,281 INFO L470 AbstractCegarLoop]: Abstraction has 3772 states and 4223 transitions. [2021-12-06 19:26:19,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.923076923076923) internal successors, (204), 52 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:19,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3772 states and 4223 transitions. [2021-12-06 19:26:19,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 19:26:19,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:26:19,284 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:26:19,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-12-06 19:26:19,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-12-06 19:26:19,485 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:26:19,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:26:19,486 INFO L85 PathProgramCache]: Analyzing trace with hash -590978948, now seen corresponding path program 16 times [2021-12-06 19:26:19,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:26:19,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407513579] [2021-12-06 19:26:19,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:26:19,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:26:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:19,871 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 153 proven. 419 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:19,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:26:19,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407513579] [2021-12-06 19:26:19,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407513579] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:26:19,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107854786] [2021-12-06 19:26:19,872 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:26:19,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:19,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:26:19,872 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:26:19,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-12-06 19:26:19,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:26:19,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:26:19,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 84 conjunts are in the unsatisfiable core [2021-12-06 19:26:19,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:26:19,983 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:26:19,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:26:20,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-06 19:26:21,239 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:26:21,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-12-06 19:26:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 200 proven. 372 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:21,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:26:22,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:26:22,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:26:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 231 proven. 341 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:24,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107854786] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:26:24,291 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:26:24,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 32, 32] total 89 [2021-12-06 19:26:24,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774977170] [2021-12-06 19:26:24,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:26:24,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2021-12-06 19:26:24,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:26:24,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-12-06 19:26:24,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=773, Invalid=7237, Unknown=0, NotChecked=0, Total=8010 [2021-12-06 19:26:24,292 INFO L87 Difference]: Start difference. First operand 3772 states and 4223 transitions. Second operand has 90 states, 89 states have (on average 4.292134831460674) internal successors, (382), 90 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:30,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:26:30,974 INFO L93 Difference]: Finished difference Result 8113 states and 8969 transitions. [2021-12-06 19:26:30,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-12-06 19:26:30,974 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 4.292134831460674) internal successors, (382), 90 states have internal predecessors, (382), 0 states have call successors, (0), 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 130 [2021-12-06 19:26:30,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:26:30,978 INFO L225 Difference]: With dead ends: 8113 [2021-12-06 19:26:30,978 INFO L226 Difference]: Without dead ends: 8045 [2021-12-06 19:26:30,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3703 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=4709, Invalid=19471, Unknown=0, NotChecked=0, Total=24180 [2021-12-06 19:26:30,980 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 2593 mSDsluCounter, 4711 mSDsCounter, 0 mSdLazyCounter, 7400 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2593 SdHoareTripleChecker+Valid, 4878 SdHoareTripleChecker+Invalid, 8002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 7400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 254 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:26:30,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2593 Valid, 4878 Invalid, 8002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 7400 Invalid, 0 Unknown, 254 Unchecked, 2.9s Time] [2021-12-06 19:26:30,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8045 states. [2021-12-06 19:26:31,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8045 to 4569. [2021-12-06 19:26:31,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4569 states, 4567 states have (on average 1.1278738778191373) internal successors, (5151), 4568 states have internal predecessors, (5151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4569 states to 4569 states and 5151 transitions. [2021-12-06 19:26:31,038 INFO L78 Accepts]: Start accepts. Automaton has 4569 states and 5151 transitions. Word has length 130 [2021-12-06 19:26:31,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:26:31,039 INFO L470 AbstractCegarLoop]: Abstraction has 4569 states and 5151 transitions. [2021-12-06 19:26:31,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 4.292134831460674) internal successors, (382), 90 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:31,039 INFO L276 IsEmpty]: Start isEmpty. Operand 4569 states and 5151 transitions. [2021-12-06 19:26:31,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 19:26:31,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:26:31,043 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:26:31,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-12-06 19:26:31,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-12-06 19:26:31,244 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:26:31,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:26:31,246 INFO L85 PathProgramCache]: Analyzing trace with hash 865906500, now seen corresponding path program 12 times [2021-12-06 19:26:31,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:26:31,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246861559] [2021-12-06 19:26:31,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:26:31,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:26:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:31,716 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 13 proven. 333 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:31,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:26:31,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246861559] [2021-12-06 19:26:31,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246861559] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:26:31,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698732844] [2021-12-06 19:26:31,716 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:26:31,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:31,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:26:31,717 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:26:31,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-12-06 19:26:31,886 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-12-06 19:26:31,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:26:31,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 111 conjunts are in the unsatisfiable core [2021-12-06 19:26:31,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:26:31,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:26:32,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:26:32,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-06 19:26:34,519 INFO L354 Elim1Store]: treesize reduction 32, result has 8.6 percent of original size [2021-12-06 19:26:34,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 20 [2021-12-06 19:26:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 13 proven. 333 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:34,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:26:35,102 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1906 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_1906) |c_ULTIMATE.start_main_~nondetString1~0#1.base|))) (let ((.cse0 (select v_ArrVal_1906 |c_ULTIMATE.start_main_~nondetString2~0#1.offset|)) (.cse2 (select .cse1 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 1)))) (or (not (= .cse0 (select .cse1 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 6)))) (= .cse2 0) (not (= .cse0 .cse2)))))) is different from false [2021-12-06 19:26:35,108 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:26:35,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 54 [2021-12-06 19:26:35,121 INFO L354 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2021-12-06 19:26:35,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 92 [2021-12-06 19:26:35,136 INFO L354 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2021-12-06 19:26:35,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 64 [2021-12-06 19:26:35,859 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 38 proven. 308 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:35,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698732844] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:26:35,860 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:26:35,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30, 30] total 75 [2021-12-06 19:26:35,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684810785] [2021-12-06 19:26:35,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:26:35,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-12-06 19:26:35,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:26:35,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-12-06 19:26:35,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=5154, Unknown=1, NotChecked=144, Total=5550 [2021-12-06 19:26:35,861 INFO L87 Difference]: Start difference. First operand 4569 states and 5151 transitions. Second operand has 75 states, 75 states have (on average 4.213333333333333) internal successors, (316), 75 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:37,456 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (not (= |c_ULTIMATE.start_main_~nondetString2~0#1.base| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)))) (and (forall ((v_ArrVal_1906 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_1906) |c_ULTIMATE.start_main_~nondetString1~0#1.base|))) (let ((.cse0 (select v_ArrVal_1906 |c_ULTIMATE.start_main_~nondetString2~0#1.offset|)) (.cse2 (select .cse1 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 1)))) (or (not (= .cse0 (select .cse1 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 6)))) (= .cse2 0) (not (= .cse0 .cse2)))))) .cse3 (= |c_ULTIMATE.start_main_~nondetString2~0#1.offset| 0) (<= 1 |c_ULTIMATE.start_main_~i~0#1|) (= |c_ULTIMATE.start_main_~i~0#1| 1) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|))) (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base|) |c_ULTIMATE.start_main_~nondetString2~0#1.offset|)) (.cse6 (select .cse4 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 1)))) (or (not (= (select .cse4 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 6)) .cse5)) (not (= .cse5 .cse6)) (= .cse6 0)))) (or (and .cse3 (= |c_ULTIMATE.start_main_~length1~0#1| 2)) (and (= |c_ULTIMATE.start_main_~length1~0#1| 7) .cse3)) (<= |c_ULTIMATE.start_main_~i~0#1| 1))) is different from false [2021-12-06 19:26:38,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:26:38,059 INFO L93 Difference]: Finished difference Result 8716 states and 9773 transitions. [2021-12-06 19:26:38,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-12-06 19:26:38,060 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 4.213333333333333) internal successors, (316), 75 states have internal predecessors, (316), 0 states have call successors, (0), 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 131 [2021-12-06 19:26:38,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:26:38,064 INFO L225 Difference]: With dead ends: 8716 [2021-12-06 19:26:38,064 INFO L226 Difference]: Without dead ends: 8591 [2021-12-06 19:26:38,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1858 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=562, Invalid=11000, Unknown=2, NotChecked=426, Total=11990 [2021-12-06 19:26:38,065 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 241 mSDsluCounter, 3761 mSDsCounter, 0 mSdLazyCounter, 2324 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 3847 SdHoareTripleChecker+Invalid, 4846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2501 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:26:38,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 3847 Invalid, 4846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2324 Invalid, 0 Unknown, 2501 Unchecked, 0.8s Time] [2021-12-06 19:26:38,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8591 states. [2021-12-06 19:26:38,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8591 to 6959. [2021-12-06 19:26:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6959 states, 6957 states have (on average 1.1263475636050022) internal successors, (7836), 6958 states have internal predecessors, (7836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6959 states to 6959 states and 7836 transitions. [2021-12-06 19:26:38,116 INFO L78 Accepts]: Start accepts. Automaton has 6959 states and 7836 transitions. Word has length 131 [2021-12-06 19:26:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:26:38,116 INFO L470 AbstractCegarLoop]: Abstraction has 6959 states and 7836 transitions. [2021-12-06 19:26:38,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 4.213333333333333) internal successors, (316), 75 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:38,117 INFO L276 IsEmpty]: Start isEmpty. Operand 6959 states and 7836 transitions. [2021-12-06 19:26:38,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-06 19:26:38,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:26:38,121 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:26:38,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-12-06 19:26:38,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-12-06 19:26:38,322 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:26:38,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:26:38,323 INFO L85 PathProgramCache]: Analyzing trace with hash 377802238, now seen corresponding path program 8 times [2021-12-06 19:26:38,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:26:38,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182543211] [2021-12-06 19:26:38,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:26:38,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:26:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:38,691 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 41 proven. 455 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:26:38,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:26:38,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182543211] [2021-12-06 19:26:38,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182543211] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:26:38,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837844952] [2021-12-06 19:26:38,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:26:38,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:38,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:26:38,692 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:26:38,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-12-06 19:26:38,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:26:38,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:26:38,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 79 conjunts are in the unsatisfiable core [2021-12-06 19:26:38,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:26:39,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:26:39,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:26:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 41 proven. 455 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:26:39,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:26:39,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:26:39,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:26:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 41 proven. 455 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:26:39,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837844952] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:26:39,750 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:26:39,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 49 [2021-12-06 19:26:39,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783247007] [2021-12-06 19:26:39,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:26:39,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-06 19:26:39,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:26:39,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-06 19:26:39,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2206, Unknown=0, NotChecked=0, Total=2352 [2021-12-06 19:26:39,751 INFO L87 Difference]: Start difference. First operand 6959 states and 7836 transitions. Second operand has 49 states, 49 states have (on average 4.612244897959184) internal successors, (226), 49 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:41,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:26:41,798 INFO L93 Difference]: Finished difference Result 8679 states and 9629 transitions. [2021-12-06 19:26:41,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-06 19:26:41,798 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.612244897959184) internal successors, (226), 49 states have internal predecessors, (226), 0 states have call successors, (0), 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 133 [2021-12-06 19:26:41,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:26:41,802 INFO L225 Difference]: With dead ends: 8679 [2021-12-06 19:26:41,803 INFO L226 Difference]: Without dead ends: 7989 [2021-12-06 19:26:41,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 243 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 1061 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=511, Invalid=4891, Unknown=0, NotChecked=0, Total=5402 [2021-12-06 19:26:41,803 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 793 mSDsluCounter, 5271 mSDsCounter, 0 mSdLazyCounter, 4388 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 5484 SdHoareTripleChecker+Invalid, 4541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 4388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:26:41,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 5484 Invalid, 4541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 4388 Invalid, 0 Unknown, 85 Unchecked, 1.3s Time] [2021-12-06 19:26:41,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7989 states. [2021-12-06 19:26:41,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7989 to 6434. [2021-12-06 19:26:41,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6434 states, 6432 states have (on average 1.1212686567164178) internal successors, (7212), 6433 states have internal predecessors, (7212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:41,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6434 states to 6434 states and 7212 transitions. [2021-12-06 19:26:41,856 INFO L78 Accepts]: Start accepts. Automaton has 6434 states and 7212 transitions. Word has length 133 [2021-12-06 19:26:41,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:26:41,857 INFO L470 AbstractCegarLoop]: Abstraction has 6434 states and 7212 transitions. [2021-12-06 19:26:41,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.612244897959184) internal successors, (226), 49 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:41,857 INFO L276 IsEmpty]: Start isEmpty. Operand 6434 states and 7212 transitions. [2021-12-06 19:26:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-06 19:26:41,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:26:41,861 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:26:41,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-12-06 19:26:42,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:42,062 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:26:42,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:26:42,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1138351353, now seen corresponding path program 13 times [2021-12-06 19:26:42,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:26:42,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096798455] [2021-12-06 19:26:42,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:26:42,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:26:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 45 proven. 326 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:42,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:26:42,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096798455] [2021-12-06 19:26:42,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096798455] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:26:42,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531849003] [2021-12-06 19:26:42,289 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:26:42,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:42,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:26:42,290 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:26:42,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-12-06 19:26:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:42,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 57 conjunts are in the unsatisfiable core [2021-12-06 19:26:42,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:26:42,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:26:42,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 19:26:42,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:26:43,052 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 66 proven. 305 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:43,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:26:43,768 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 91 proven. 280 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:43,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531849003] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:26:43,768 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:26:43,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 51 [2021-12-06 19:26:43,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630246773] [2021-12-06 19:26:43,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:26:43,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-06 19:26:43,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:26:43,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-06 19:26:43,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=2367, Unknown=0, NotChecked=0, Total=2652 [2021-12-06 19:26:43,769 INFO L87 Difference]: Start difference. First operand 6434 states and 7212 transitions. Second operand has 52 states, 51 states have (on average 7.568627450980392) internal successors, (386), 52 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:45,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:26:45,091 INFO L93 Difference]: Finished difference Result 10615 states and 11897 transitions. [2021-12-06 19:26:45,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 19:26:45,092 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 7.568627450980392) internal successors, (386), 52 states have internal predecessors, (386), 0 states have call successors, (0), 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 135 [2021-12-06 19:26:45,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:26:45,097 INFO L225 Difference]: With dead ends: 10615 [2021-12-06 19:26:45,098 INFO L226 Difference]: Without dead ends: 10615 [2021-12-06 19:26:45,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1161, Invalid=5159, Unknown=0, NotChecked=0, Total=6320 [2021-12-06 19:26:45,098 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 832 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:26:45,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 1701 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1753 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:26:45,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10615 states. [2021-12-06 19:26:45,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10615 to 6865. [2021-12-06 19:26:45,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6865 states, 6863 states have (on average 1.1213754917674486) internal successors, (7696), 6864 states have internal predecessors, (7696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6865 states to 6865 states and 7696 transitions. [2021-12-06 19:26:45,165 INFO L78 Accepts]: Start accepts. Automaton has 6865 states and 7696 transitions. Word has length 135 [2021-12-06 19:26:45,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:26:45,165 INFO L470 AbstractCegarLoop]: Abstraction has 6865 states and 7696 transitions. [2021-12-06 19:26:45,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 7.568627450980392) internal successors, (386), 52 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:45,165 INFO L276 IsEmpty]: Start isEmpty. Operand 6865 states and 7696 transitions. [2021-12-06 19:26:45,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-06 19:26:45,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:26:45,170 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:26:45,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-12-06 19:26:45,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:45,371 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:26:45,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:26:45,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2041039411, now seen corresponding path program 6 times [2021-12-06 19:26:45,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:26:45,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969225903] [2021-12-06 19:26:45,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:26:45,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:26:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:45,669 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 109 proven. 273 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 19:26:45,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:26:45,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969225903] [2021-12-06 19:26:45,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969225903] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:26:45,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943696022] [2021-12-06 19:26:45,669 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:26:45,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:45,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:26:45,670 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:26:45,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-12-06 19:26:45,861 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-12-06 19:26:45,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:26:45,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 90 conjunts are in the unsatisfiable core [2021-12-06 19:26:45,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:26:45,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:26:46,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:26:46,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 19:26:46,585 INFO L354 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2021-12-06 19:26:46,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 23 [2021-12-06 19:26:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 18 proven. 374 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:26:46,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:26:46,929 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2078 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_2078) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 6)) 0)) is different from false [2021-12-06 19:26:46,933 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:26:46,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 19:26:46,937 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:26:46,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2021-12-06 19:26:46,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:26:47,298 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 13 proven. 374 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 19:26:47,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943696022] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:26:47,299 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:26:47,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27, 26] total 53 [2021-12-06 19:26:47,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776118317] [2021-12-06 19:26:47,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:26:47,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-12-06 19:26:47,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:26:47,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-12-06 19:26:47,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2499, Unknown=1, NotChecked=100, Total=2756 [2021-12-06 19:26:47,300 INFO L87 Difference]: Start difference. First operand 6865 states and 7696 transitions. Second operand has 53 states, 53 states have (on average 5.528301886792453) internal successors, (293), 53 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:48,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:26:48,371 INFO L93 Difference]: Finished difference Result 8490 states and 9515 transitions. [2021-12-06 19:26:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 19:26:48,371 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.528301886792453) internal successors, (293), 53 states have internal predecessors, (293), 0 states have call successors, (0), 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 141 [2021-12-06 19:26:48,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:26:48,374 INFO L225 Difference]: With dead ends: 8490 [2021-12-06 19:26:48,375 INFO L226 Difference]: Without dead ends: 5757 [2021-12-06 19:26:48,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 245 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=266, Invalid=4293, Unknown=1, NotChecked=132, Total=4692 [2021-12-06 19:26:48,375 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 198 mSDsluCounter, 3145 mSDsCounter, 0 mSdLazyCounter, 2422 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 3240 SdHoareTripleChecker+Invalid, 2717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 278 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:26:48,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 3240 Invalid, 2717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2422 Invalid, 0 Unknown, 278 Unchecked, 0.7s Time] [2021-12-06 19:26:48,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5757 states. [2021-12-06 19:26:48,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5757 to 4712. [2021-12-06 19:26:48,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4712 states, 4710 states have (on average 1.1222929936305732) internal successors, (5286), 4711 states have internal predecessors, (5286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:48,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4712 states to 4712 states and 5286 transitions. [2021-12-06 19:26:48,410 INFO L78 Accepts]: Start accepts. Automaton has 4712 states and 5286 transitions. Word has length 141 [2021-12-06 19:26:48,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:26:48,410 INFO L470 AbstractCegarLoop]: Abstraction has 4712 states and 5286 transitions. [2021-12-06 19:26:48,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.528301886792453) internal successors, (293), 53 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:48,411 INFO L276 IsEmpty]: Start isEmpty. Operand 4712 states and 5286 transitions. [2021-12-06 19:26:48,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-06 19:26:48,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:26:48,414 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:26:48,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-12-06 19:26:48,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-12-06 19:26:48,616 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:26:48,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:26:48,617 INFO L85 PathProgramCache]: Analyzing trace with hash -323469660, now seen corresponding path program 17 times [2021-12-06 19:26:48,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:26:48,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694220943] [2021-12-06 19:26:48,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:26:48,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:26:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 414 proven. 298 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:48,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:26:48,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694220943] [2021-12-06 19:26:48,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694220943] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:26:48,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060776905] [2021-12-06 19:26:48,909 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:26:48,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:48,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:26:48,909 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:26:48,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-12-06 19:26:49,129 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-12-06 19:26:49,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:26:49,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 65 conjunts are in the unsatisfiable core [2021-12-06 19:26:49,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:26:49,151 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:26:49,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:26:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 481 proven. 231 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:49,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:26:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 481 proven. 231 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:50,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060776905] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:26:50,467 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:26:50,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 75 [2021-12-06 19:26:50,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314397059] [2021-12-06 19:26:50,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:26:50,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-12-06 19:26:50,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:26:50,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-12-06 19:26:50,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=954, Invalid=4596, Unknown=0, NotChecked=0, Total=5550 [2021-12-06 19:26:50,469 INFO L87 Difference]: Start difference. First operand 4712 states and 5286 transitions. Second operand has 75 states, 75 states have (on average 4.52) internal successors, (339), 75 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:53,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:26:53,458 INFO L93 Difference]: Finished difference Result 10563 states and 11478 transitions. [2021-12-06 19:26:53,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-12-06 19:26:53,458 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 4.52) internal successors, (339), 75 states have internal predecessors, (339), 0 states have call successors, (0), 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 142 [2021-12-06 19:26:53,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:26:53,464 INFO L225 Difference]: With dead ends: 10563 [2021-12-06 19:26:53,464 INFO L226 Difference]: Without dead ends: 8753 [2021-12-06 19:26:53,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8436 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=6665, Invalid=22747, Unknown=0, NotChecked=0, Total=29412 [2021-12-06 19:26:53,465 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 2051 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 2427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:26:53,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2051 Valid, 1875 Invalid, 2427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 19:26:53,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8753 states. [2021-12-06 19:26:53,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8753 to 4597. [2021-12-06 19:26:53,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4597 states, 4595 states have (on average 1.120348204570185) internal successors, (5148), 4596 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:53,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4597 states to 4597 states and 5148 transitions. [2021-12-06 19:26:53,511 INFO L78 Accepts]: Start accepts. Automaton has 4597 states and 5148 transitions. Word has length 142 [2021-12-06 19:26:53,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:26:53,512 INFO L470 AbstractCegarLoop]: Abstraction has 4597 states and 5148 transitions. [2021-12-06 19:26:53,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 4.52) internal successors, (339), 75 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:53,512 INFO L276 IsEmpty]: Start isEmpty. Operand 4597 states and 5148 transitions. [2021-12-06 19:26:53,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 19:26:53,514 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:26:53,515 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:26:53,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-12-06 19:26:53,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:53,716 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:26:53,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:26:53,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1268672449, now seen corresponding path program 18 times [2021-12-06 19:26:53,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:26:53,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648059251] [2021-12-06 19:26:53,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:26:53,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:26:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 49 proven. 708 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:54,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:26:54,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648059251] [2021-12-06 19:26:54,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648059251] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:26:54,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032968164] [2021-12-06 19:26:54,181 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:26:54,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:54,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:26:54,182 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:26:54,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-12-06 19:26:54,597 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-12-06 19:26:54,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:26:54,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 97 conjunts are in the unsatisfiable core [2021-12-06 19:26:54,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:26:54,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:26:55,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:26:55,176 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 49 proven. 708 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:55,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:26:55,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:26:55,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:26:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 49 proven. 708 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:55,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032968164] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:26:55,494 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:26:55,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 58 [2021-12-06 19:26:55,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717895205] [2021-12-06 19:26:55,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:26:55,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-12-06 19:26:55,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:26:55,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-12-06 19:26:55,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3136, Unknown=0, NotChecked=0, Total=3306 [2021-12-06 19:26:55,495 INFO L87 Difference]: Start difference. First operand 4597 states and 5148 transitions. Second operand has 58 states, 58 states have (on average 4.0) internal successors, (232), 58 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:58,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:26:58,413 INFO L93 Difference]: Finished difference Result 7844 states and 8700 transitions. [2021-12-06 19:26:58,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-06 19:26:58,414 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.0) internal successors, (232), 58 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-12-06 19:26:58,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:26:58,417 INFO L225 Difference]: With dead ends: 7844 [2021-12-06 19:26:58,417 INFO L226 Difference]: Without dead ends: 7028 [2021-12-06 19:26:58,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 277 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 1520 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=616, Invalid=7216, Unknown=0, NotChecked=0, Total=7832 [2021-12-06 19:26:58,418 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 1514 mSDsluCounter, 9328 mSDsCounter, 0 mSdLazyCounter, 7230 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 9613 SdHoareTripleChecker+Invalid, 7713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 7230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 381 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:26:58,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 9613 Invalid, 7713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 7230 Invalid, 0 Unknown, 381 Unchecked, 2.0s Time] [2021-12-06 19:26:58,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7028 states. [2021-12-06 19:26:58,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7028 to 4625. [2021-12-06 19:26:58,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4625 states, 4623 states have (on average 1.119835604585767) internal successors, (5177), 4624 states have internal predecessors, (5177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:58,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4625 states to 4625 states and 5177 transitions. [2021-12-06 19:26:58,455 INFO L78 Accepts]: Start accepts. Automaton has 4625 states and 5177 transitions. Word has length 146 [2021-12-06 19:26:58,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:26:58,456 INFO L470 AbstractCegarLoop]: Abstraction has 4625 states and 5177 transitions. [2021-12-06 19:26:58,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.0) internal successors, (232), 58 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:58,456 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states and 5177 transitions. [2021-12-06 19:26:58,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-06 19:26:58,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:26:58,457 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:26:58,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-12-06 19:26:58,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:58,659 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:26:58,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:26:58,660 INFO L85 PathProgramCache]: Analyzing trace with hash 776648806, now seen corresponding path program 14 times [2021-12-06 19:26:58,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:26:58,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306531102] [2021-12-06 19:26:58,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:26:58,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:26:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:59,198 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 15 proven. 448 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:26:59,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:26:59,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306531102] [2021-12-06 19:26:59,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306531102] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:26:59,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069690035] [2021-12-06 19:26:59,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:26:59,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:59,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:26:59,199 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:26:59,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-12-06 19:26:59,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:26:59,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:26:59,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 109 conjunts are in the unsatisfiable core [2021-12-06 19:26:59,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:26:59,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:26:59,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:26:59,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-06 19:27:02,077 INFO L354 Elim1Store]: treesize reduction 32, result has 8.6 percent of original size [2021-12-06 19:27:02,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 20 [2021-12-06 19:27:02,118 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 15 proven. 448 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:27:02,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:27:02,665 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2272 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_2272) |c_ULTIMATE.start_main_~nondetString1~0#1.base|))) (let ((.cse2 (select .cse0 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 1))) (.cse1 (select v_ArrVal_2272 |c_ULTIMATE.start_main_~nondetString2~0#1.offset|))) (or (not (= (select .cse0 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 7)) .cse1)) (= .cse2 0) (not (= .cse2 .cse1)))))) is different from false [2021-12-06 19:27:02,671 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:27:02,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 54 [2021-12-06 19:27:02,682 INFO L354 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2021-12-06 19:27:02,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 92 [2021-12-06 19:27:02,697 INFO L354 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2021-12-06 19:27:02,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 64 [2021-12-06 19:27:03,492 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 40 proven. 423 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:27:03,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069690035] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:27:03,492 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:27:03,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 32] total 79 [2021-12-06 19:27:03,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236772548] [2021-12-06 19:27:03,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:27:03,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-12-06 19:27:03,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:27:03,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-12-06 19:27:03,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=5749, Unknown=1, NotChecked=152, Total=6162 [2021-12-06 19:27:03,493 INFO L87 Difference]: Start difference. First operand 4625 states and 5177 transitions. Second operand has 79 states, 79 states have (on average 4.481012658227848) internal successors, (354), 79 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:27:05,145 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (not (= |c_ULTIMATE.start_main_~nondetString2~0#1.base| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)))) (and .cse0 (= |c_ULTIMATE.start_main_~nondetString2~0#1.offset| 0) (or (and (= |c_ULTIMATE.start_main_~length1~0#1| 8) .cse0) (and .cse0 (= |c_ULTIMATE.start_main_~length1~0#1| 2))) (<= 1 |c_ULTIMATE.start_main_~i~0#1|) (forall ((v_ArrVal_2272 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_2272) |c_ULTIMATE.start_main_~nondetString1~0#1.base|))) (let ((.cse3 (select .cse1 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 1))) (.cse2 (select v_ArrVal_2272 |c_ULTIMATE.start_main_~nondetString2~0#1.offset|))) (or (not (= (select .cse1 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 7)) .cse2)) (= .cse3 0) (not (= .cse3 .cse2)))))) (= |c_ULTIMATE.start_main_~i~0#1| 1) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= |c_ULTIMATE.start_main_~i~0#1| 1) (let ((.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|))) (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base|) |c_ULTIMATE.start_main_~nondetString2~0#1.offset|)) (.cse5 (select .cse6 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 1)))) (or (not (= .cse4 .cse5)) (not (= (select .cse6 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 7)) .cse4)) (= .cse5 0)))))) is different from false [2021-12-06 19:27:05,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:27:05,436 INFO L93 Difference]: Finished difference Result 5773 states and 6402 transitions. [2021-12-06 19:27:05,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-06 19:27:05,437 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 4.481012658227848) internal successors, (354), 79 states have internal predecessors, (354), 0 states have call successors, (0), 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 148 [2021-12-06 19:27:05,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:27:05,440 INFO L225 Difference]: With dead ends: 5773 [2021-12-06 19:27:05,440 INFO L226 Difference]: Without dead ends: 5649 [2021-12-06 19:27:05,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 250 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1834 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=521, Invalid=11257, Unknown=2, NotChecked=430, Total=12210 [2021-12-06 19:27:05,441 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 222 mSDsluCounter, 3266 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 465 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:27:05,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 3339 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2139 Invalid, 0 Unknown, 465 Unchecked, 0.7s Time] [2021-12-06 19:27:05,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5649 states. [2021-12-06 19:27:05,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5649 to 5632. [2021-12-06 19:27:05,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5632 states, 5630 states have (on average 1.1120781527531083) internal successors, (6261), 5631 states have internal predecessors, (6261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:27:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5632 states to 5632 states and 6261 transitions. [2021-12-06 19:27:05,486 INFO L78 Accepts]: Start accepts. Automaton has 5632 states and 6261 transitions. Word has length 148 [2021-12-06 19:27:05,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:27:05,486 INFO L470 AbstractCegarLoop]: Abstraction has 5632 states and 6261 transitions. [2021-12-06 19:27:05,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 4.481012658227848) internal successors, (354), 79 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:27:05,487 INFO L276 IsEmpty]: Start isEmpty. Operand 5632 states and 6261 transitions. [2021-12-06 19:27:05,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 19:27:05,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:27:05,490 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:27:05,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-12-06 19:27:05,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-12-06 19:27:05,691 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:27:05,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:27:05,692 INFO L85 PathProgramCache]: Analyzing trace with hash 182499934, now seen corresponding path program 19 times [2021-12-06 19:27:05,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:27:05,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960501179] [2021-12-06 19:27:05,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:27:05,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:27:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 231 proven. 575 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:27:06,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:27:06,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960501179] [2021-12-06 19:27:06,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960501179] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:27:06,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512544688] [2021-12-06 19:27:06,177 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:27:06,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:27:06,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:27:06,178 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:27:06,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-12-06 19:27:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:06,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 80 conjunts are in the unsatisfiable core [2021-12-06 19:27:06,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:27:06,937 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 276 proven. 530 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:27:06,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:27:07,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:27:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 276 proven. 530 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:27:07,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512544688] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:27:07,748 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:27:07,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 32, 32] total 66 [2021-12-06 19:27:07,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619823338] [2021-12-06 19:27:07,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:27:07,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-12-06 19:27:07,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:27:07,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-12-06 19:27:07,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=4012, Unknown=0, NotChecked=0, Total=4422 [2021-12-06 19:27:07,749 INFO L87 Difference]: Start difference. First operand 5632 states and 6261 transitions. Second operand has 67 states, 66 states have (on average 4.666666666666667) internal successors, (308), 67 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:27:11,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:27:11,103 INFO L93 Difference]: Finished difference Result 8947 states and 9866 transitions. [2021-12-06 19:27:11,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-12-06 19:27:11,103 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 4.666666666666667) internal successors, (308), 67 states have internal predecessors, (308), 0 states have call successors, (0), 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 150 [2021-12-06 19:27:11,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:27:11,108 INFO L225 Difference]: With dead ends: 8947 [2021-12-06 19:27:11,108 INFO L226 Difference]: Without dead ends: 8947 [2021-12-06 19:27:11,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 262 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1717 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2184, Invalid=9372, Unknown=0, NotChecked=0, Total=11556 [2021-12-06 19:27:11,109 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 2096 mSDsluCounter, 3735 mSDsCounter, 0 mSdLazyCounter, 5857 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 3892 SdHoareTripleChecker+Invalid, 6005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 5857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:27:11,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2096 Valid, 3892 Invalid, 6005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 5857 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 19:27:11,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8947 states. [2021-12-06 19:27:11,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8947 to 5716. [2021-12-06 19:27:11,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5716 states, 5714 states have (on average 1.1127056352817641) internal successors, (6358), 5715 states have internal predecessors, (6358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:27:11,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5716 states to 5716 states and 6358 transitions. [2021-12-06 19:27:11,180 INFO L78 Accepts]: Start accepts. Automaton has 5716 states and 6358 transitions. Word has length 150 [2021-12-06 19:27:11,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:27:11,180 INFO L470 AbstractCegarLoop]: Abstraction has 5716 states and 6358 transitions. [2021-12-06 19:27:11,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 4.666666666666667) internal successors, (308), 67 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:27:11,180 INFO L276 IsEmpty]: Start isEmpty. Operand 5716 states and 6358 transitions. [2021-12-06 19:27:11,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-06 19:27:11,183 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:27:11,184 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:27:11,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2021-12-06 19:27:11,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:27:11,385 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:27:11,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:27:11,386 INFO L85 PathProgramCache]: Analyzing trace with hash -325786877, now seen corresponding path program 15 times [2021-12-06 19:27:11,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:27:11,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717995750] [2021-12-06 19:27:11,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:27:11,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:27:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 66 proven. 426 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:27:11,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:27:11,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717995750] [2021-12-06 19:27:11,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717995750] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:27:11,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872208472] [2021-12-06 19:27:11,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:27:11,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:27:11,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:27:11,626 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:27:11,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-12-06 19:27:11,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-12-06 19:27:11,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:27:11,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-06 19:27:11,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:27:12,279 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 91 proven. 401 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:27:12,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:27:12,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-12-06 19:27:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 91 proven. 401 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:27:12,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872208472] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:27:12,792 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:27:12,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 51 [2021-12-06 19:27:12,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382620024] [2021-12-06 19:27:12,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:27:12,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-06 19:27:12,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:27:12,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-06 19:27:12,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=2258, Unknown=0, NotChecked=0, Total=2652 [2021-12-06 19:27:12,793 INFO L87 Difference]: Start difference. First operand 5716 states and 6358 transitions. Second operand has 52 states, 51 states have (on average 8.0) internal successors, (408), 52 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) [2021-12-06 19:27:13,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:27:13,612 INFO L93 Difference]: Finished difference Result 11317 states and 12650 transitions. [2021-12-06 19:27:13,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 19:27:13,613 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 8.0) internal successors, (408), 52 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) Word has length 152 [2021-12-06 19:27:13,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:27:13,619 INFO L225 Difference]: With dead ends: 11317 [2021-12-06 19:27:13,619 INFO L226 Difference]: Without dead ends: 11317 [2021-12-06 19:27:13,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 271 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=975, Invalid=3995, Unknown=0, NotChecked=0, Total=4970 [2021-12-06 19:27:13,619 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 1123 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:27:13,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 1572 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:27:13,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11317 states. [2021-12-06 19:27:13,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11317 to 6178. [2021-12-06 19:27:13,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6178 states, 6176 states have (on average 1.1135038860103628) internal successors, (6877), 6177 states have internal predecessors, (6877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:27:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6178 states to 6178 states and 6877 transitions. [2021-12-06 19:27:13,691 INFO L78 Accepts]: Start accepts. Automaton has 6178 states and 6877 transitions. Word has length 152 [2021-12-06 19:27:13,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:27:13,691 INFO L470 AbstractCegarLoop]: Abstraction has 6178 states and 6877 transitions. [2021-12-06 19:27:13,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 8.0) internal successors, (408), 52 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) [2021-12-06 19:27:13,692 INFO L276 IsEmpty]: Start isEmpty. Operand 6178 states and 6877 transitions. [2021-12-06 19:27:13,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 19:27:13,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:27:13,694 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:27:13,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-12-06 19:27:13,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-12-06 19:27:13,895 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:27:13,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:27:13,895 INFO L85 PathProgramCache]: Analyzing trace with hash 971462514, now seen corresponding path program 20 times [2021-12-06 19:27:13,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:27:13,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133804621] [2021-12-06 19:27:13,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:27:13,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:27:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 53 proven. 832 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:27:14,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:27:14,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133804621] [2021-12-06 19:27:14,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133804621] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:27:14,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079134840] [2021-12-06 19:27:14,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:27:14,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:27:14,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:27:14,335 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:27:14,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-12-06 19:27:14,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:27:14,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:27:14,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 95 conjunts are in the unsatisfiable core [2021-12-06 19:27:14,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:27:14,483 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:27:14,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:27:15,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:27:17,450 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:27:17,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-12-06 19:27:17,715 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 276 proven. 609 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:27:17,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:27:19,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:27:19,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:27:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 325 proven. 560 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:27:21,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079134840] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:27:21,553 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:27:21,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 109 [2021-12-06 19:27:21,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829706082] [2021-12-06 19:27:21,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:27:21,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2021-12-06 19:27:21,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:27:21,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-12-06 19:27:21,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=750, Invalid=11022, Unknown=0, NotChecked=0, Total=11772 [2021-12-06 19:27:21,555 INFO L87 Difference]: Start difference. First operand 6178 states and 6877 transitions. Second operand has 109 states, 109 states have (on average 4.220183486238532) internal successors, (460), 109 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:27:27,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:27:27,894 INFO L93 Difference]: Finished difference Result 10614 states and 11778 transitions. [2021-12-06 19:27:27,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-12-06 19:27:27,895 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 4.220183486238532) internal successors, (460), 109 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-12-06 19:27:27,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:27:27,901 INFO L225 Difference]: With dead ends: 10614 [2021-12-06 19:27:27,901 INFO L226 Difference]: Without dead ends: 10505 [2021-12-06 19:27:27,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 267 SyntacticMatches, 5 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6277 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=2098, Invalid=26294, Unknown=0, NotChecked=0, Total=28392 [2021-12-06 19:27:27,902 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 2481 mSDsluCounter, 10998 mSDsCounter, 0 mSdLazyCounter, 7680 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2481 SdHoareTripleChecker+Valid, 11212 SdHoareTripleChecker+Invalid, 12384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 7680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4602 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:27:27,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2481 Valid, 11212 Invalid, 12384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 7680 Invalid, 0 Unknown, 4602 Unchecked, 2.4s Time] [2021-12-06 19:27:27,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10505 states. [2021-12-06 19:27:27,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10505 to 6867. [2021-12-06 19:27:27,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6867 states, 6865 states have (on average 1.1162418062636563) internal successors, (7663), 6866 states have internal predecessors, (7663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:27:27,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6867 states to 6867 states and 7663 transitions. [2021-12-06 19:27:27,974 INFO L78 Accepts]: Start accepts. Automaton has 6867 states and 7663 transitions. Word has length 156 [2021-12-06 19:27:27,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:27:27,974 INFO L470 AbstractCegarLoop]: Abstraction has 6867 states and 7663 transitions. [2021-12-06 19:27:27,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 4.220183486238532) internal successors, (460), 109 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:27:27,974 INFO L276 IsEmpty]: Start isEmpty. Operand 6867 states and 7663 transitions. [2021-12-06 19:27:27,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-06 19:27:27,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:27:27,977 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:27:27,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-12-06 19:27:28,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-12-06 19:27:28,178 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:27:28,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:27:28,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1703255727, now seen corresponding path program 7 times [2021-12-06 19:27:28,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:27:28,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243663657] [2021-12-06 19:27:28,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:27:28,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:27:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:28,473 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 127 proven. 378 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 19:27:28,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:27:28,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243663657] [2021-12-06 19:27:28,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243663657] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:27:28,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425642358] [2021-12-06 19:27:28,473 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:27:28,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:27:28,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:27:28,474 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:27:28,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-12-06 19:27:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:28,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 82 conjunts are in the unsatisfiable core [2021-12-06 19:27:28,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:27:28,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:27:28,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:27:28,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-06 19:27:29,359 INFO L354 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2021-12-06 19:27:29,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 23 [2021-12-06 19:27:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 20 proven. 490 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 19:27:29,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:27:29,748 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2536 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_2536) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 7)) 0)) is different from false [2021-12-06 19:27:29,751 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:27:29,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 19:27:29,755 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:27:29,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2021-12-06 19:27:29,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:27:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 15 proven. 495 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 19:27:29,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425642358] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:27:29,973 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:27:29,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 28, 28] total 52 [2021-12-06 19:27:29,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598794624] [2021-12-06 19:27:29,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:27:29,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-06 19:27:29,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:27:29,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-06 19:27:29,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2400, Unknown=1, NotChecked=98, Total=2652 [2021-12-06 19:27:29,974 INFO L87 Difference]: Start difference. First operand 6867 states and 7663 transitions. Second operand has 52 states, 52 states have (on average 4.923076923076923) internal successors, (256), 52 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) [2021-12-06 19:27:31,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:27:31,302 INFO L93 Difference]: Finished difference Result 9702 states and 10851 transitions. [2021-12-06 19:27:31,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 19:27:31,302 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.923076923076923) internal successors, (256), 52 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 158 [2021-12-06 19:27:31,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:27:31,306 INFO L225 Difference]: With dead ends: 9702 [2021-12-06 19:27:31,306 INFO L226 Difference]: Without dead ends: 6656 [2021-12-06 19:27:31,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 283 SyntacticMatches, 4 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=281, Invalid=4414, Unknown=1, NotChecked=134, Total=4830 [2021-12-06 19:27:31,307 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 332 mSDsluCounter, 3331 mSDsCounter, 0 mSdLazyCounter, 2621 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 3443 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 624 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:27:31,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 3443 Invalid, 3270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2621 Invalid, 0 Unknown, 624 Unchecked, 0.8s Time] [2021-12-06 19:27:31,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6656 states. [2021-12-06 19:27:31,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6656 to 6023. [2021-12-06 19:27:31,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6023 states, 6021 states have (on average 1.1227370868626474) internal successors, (6760), 6022 states have internal predecessors, (6760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:27:31,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6023 states to 6023 states and 6760 transitions. [2021-12-06 19:27:31,348 INFO L78 Accepts]: Start accepts. Automaton has 6023 states and 6760 transitions. Word has length 158 [2021-12-06 19:27:31,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:27:31,348 INFO L470 AbstractCegarLoop]: Abstraction has 6023 states and 6760 transitions. [2021-12-06 19:27:31,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.923076923076923) internal successors, (256), 52 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) [2021-12-06 19:27:31,348 INFO L276 IsEmpty]: Start isEmpty. Operand 6023 states and 6760 transitions. [2021-12-06 19:27:31,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-06 19:27:31,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:27:31,351 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:27:31,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-12-06 19:27:31,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:27:31,552 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:27:31,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:27:31,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1885131242, now seen corresponding path program 16 times [2021-12-06 19:27:31,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:27:31,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650173543] [2021-12-06 19:27:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:27:31,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:27:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 17 proven. 580 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:27:32,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:27:32,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650173543] [2021-12-06 19:27:32,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650173543] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:27:32,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984892127] [2021-12-06 19:27:32,122 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:27:32,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:27:32,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:27:32,123 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:27:32,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-12-06 19:27:32,256 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:27:32,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:27:32,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 109 conjunts are in the unsatisfiable core [2021-12-06 19:27:32,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:27:32,279 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:27:32,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:27:33,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:27:33,253 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:27:33,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2021-12-06 19:27:33,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 3 [2021-12-06 19:28:24,231 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:28:24,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2021-12-06 19:28:25,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:28:25,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:28:25,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:28:25,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 17 [2021-12-06 19:28:25,241 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 304 proven. 242 refuted. 52 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:28:25,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:28:28,714 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:28:28,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 38 [2021-12-06 19:28:28,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:28:28,724 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:28:28,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 75 [2021-12-06 19:28:28,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:28:28,736 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:28:28,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 56 [2021-12-06 19:28:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 345 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:28:32,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984892127] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:28:32,067 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:28:32,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 40, 40] total 104 [2021-12-06 19:28:32,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010028690] [2021-12-06 19:28:32,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:28:32,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-12-06 19:28:32,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:28:32,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-12-06 19:28:32,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=773, Invalid=9918, Unknown=21, NotChecked=0, Total=10712 [2021-12-06 19:28:32,068 INFO L87 Difference]: Start difference. First operand 6023 states and 6760 transitions. Second operand has 104 states, 104 states have (on average 4.538461538461538) internal successors, (472), 104 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:28:45,803 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_cstrpbrk_~s~0#1.base|) |c_ULTIMATE.start_cstrpbrk_~s~0#1.offset|)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrpbrk_~sc1~0#1.base|))) (and (= (select .cse0 |c_ULTIMATE.start_cstrpbrk_~sc1~0#1.offset|) |c_ULTIMATE.start_cstrpbrk_~c~0#1|) (= |c_ULTIMATE.start_cstrpbrk_#t~mem5#1| .cse1) (= |c_ULTIMATE.start_cstrpbrk_~s2#1.offset| 0) (let ((.cse2 (= .cse1 0))) (or (and |c_ULTIMATE.start_cstrpbrk_#t~short7#1| (not .cse2)) (and .cse2 (not |c_ULTIMATE.start_cstrpbrk_#t~short7#1|)))) (not (= (select .cse0 (+ 4 |c_ULTIMATE.start_cstrpbrk_~sc1~0#1.offset|)) (select (select |c_#memory_int| |c_ULTIMATE.start_cstrpbrk_~s2#1.base|) |c_ULTIMATE.start_cstrpbrk_~s2#1.offset|))) (exists ((|ULTIMATE.start_main_~nondetString1~0#1.offset| Int) (|ULTIMATE.start_main_~length1~0#1| Int)) (let ((.cse3 (= |c_ULTIMATE.start_cstrpbrk_~sc1~0#1.base| |c_ULTIMATE.start_cstrpbrk_~s2#1.base|))) (and (<= (+ |ULTIMATE.start_main_~nondetString1~0#1.offset| 4) |c_ULTIMATE.start_cstrpbrk_~sc1~0#1.offset|) (<= |ULTIMATE.start_main_~length1~0#1| 9) (<= 0 |ULTIMATE.start_main_~nondetString1~0#1.offset|) (or (= (select (select |c_#memory_int| |c_ULTIMATE.start_cstrpbrk_~sc1~0#1.base|) (+ (- 1) |ULTIMATE.start_main_~nondetString1~0#1.offset| |ULTIMATE.start_main_~length1~0#1|)) 0) .cse3) (or (<= (select |c_#length| |c_ULTIMATE.start_cstrpbrk_~sc1~0#1.base|) |ULTIMATE.start_main_~length1~0#1|) .cse3)))) (<= (select |c_#length| |c_ULTIMATE.start_cstrpbrk_~s2#1.base|) 2) (= |c_ULTIMATE.start_cstrpbrk_~s~0#1.base| |c_ULTIMATE.start_cstrpbrk_~s2#1.base|) (= |c_ULTIMATE.start_cstrpbrk_~s~0#1.offset| |c_ULTIMATE.start_cstrpbrk_~s2#1.offset|) (forall ((|v_ULTIMATE.start_cstrpbrk_~sc1~0#1.offset_276| Int)) (or (< (select |c_#length| |c_ULTIMATE.start_cstrpbrk_~sc1~0#1.base|) (+ |v_ULTIMATE.start_cstrpbrk_~sc1~0#1.offset_276| 1)) (< |v_ULTIMATE.start_cstrpbrk_~sc1~0#1.offset_276| (+ 4 |c_ULTIMATE.start_cstrpbrk_~sc1~0#1.offset|)) (not (= (select (select |c_#memory_int| |c_ULTIMATE.start_cstrpbrk_~sc1~0#1.base|) |v_ULTIMATE.start_cstrpbrk_~sc1~0#1.offset_276|) (select (select |c_#memory_int| |c_ULTIMATE.start_cstrpbrk_~s2#1.base|) |c_ULTIMATE.start_cstrpbrk_~s2#1.offset|))))))) is different from false [2021-12-06 19:29:13,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:29:13,268 INFO L93 Difference]: Finished difference Result 14874 states and 16727 transitions. [2021-12-06 19:29:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2021-12-06 19:29:13,268 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 4.538461538461538) internal successors, (472), 104 states have internal predecessors, (472), 0 states have call successors, (0), 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 165 [2021-12-06 19:29:13,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:29:13,276 INFO L225 Difference]: With dead ends: 14874 [2021-12-06 19:29:13,276 INFO L226 Difference]: Without dead ends: 14735 [2021-12-06 19:29:13,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 310 SyntacticMatches, 11 SemanticMatches, 238 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 15896 ImplicationChecksByTransitivity, 84.4s TimeCoverageRelationStatistics Valid=4290, Invalid=52572, Unknown=24, NotChecked=474, Total=57360 [2021-12-06 19:29:13,278 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 1020 mSDsluCounter, 3113 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 4709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2019 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:29:13,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 3175 Invalid, 4709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 2523 Invalid, 0 Unknown, 2019 Unchecked, 0.9s Time] [2021-12-06 19:29:13,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14735 states. [2021-12-06 19:29:13,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14735 to 13079. [2021-12-06 19:29:13,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13079 states, 13077 states have (on average 1.1264051387933012) internal successors, (14730), 13078 states have internal predecessors, (14730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:13,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13079 states to 13079 states and 14730 transitions. [2021-12-06 19:29:13,394 INFO L78 Accepts]: Start accepts. Automaton has 13079 states and 14730 transitions. Word has length 165 [2021-12-06 19:29:13,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:29:13,394 INFO L470 AbstractCegarLoop]: Abstraction has 13079 states and 14730 transitions. [2021-12-06 19:29:13,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 4.538461538461538) internal successors, (472), 104 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:13,394 INFO L276 IsEmpty]: Start isEmpty. Operand 13079 states and 14730 transitions. [2021-12-06 19:29:13,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-06 19:29:13,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:29:13,400 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:29:13,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-12-06 19:29:13,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:29:13,601 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:29:13,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:29:13,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1119072733, now seen corresponding path program 21 times [2021-12-06 19:29:13,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:29:13,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047657865] [2021-12-06 19:29:13,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:29:13,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:29:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 57 proven. 966 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:29:14,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:29:14,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047657865] [2021-12-06 19:29:14,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047657865] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:29:14,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742901303] [2021-12-06 19:29:14,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:29:14,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:29:14,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:29:14,186 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:29:14,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-12-06 19:29:15,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-12-06 19:29:15,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:29:15,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 107 conjunts are in the unsatisfiable core [2021-12-06 19:29:15,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:29:15,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:29:15,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:29:15,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 57 proven. 966 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:29:15,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:29:15,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:29:15,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:29:16,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 57 proven. 966 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:29:16,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742901303] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:29:16,123 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:29:16,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 64 [2021-12-06 19:29:16,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973795668] [2021-12-06 19:29:16,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:29:16,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-12-06 19:29:16,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:29:16,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-12-06 19:29:16,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=3846, Unknown=0, NotChecked=0, Total=4032 [2021-12-06 19:29:16,124 INFO L87 Difference]: Start difference. First operand 13079 states and 14730 transitions. Second operand has 64 states, 64 states have (on average 4.0625) internal successors, (260), 64 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:20,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:29:20,049 INFO L93 Difference]: Finished difference Result 28673 states and 32332 transitions. [2021-12-06 19:29:20,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-06 19:29:20,050 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.0625) internal successors, (260), 64 states have internal predecessors, (260), 0 states have call successors, (0), 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 166 [2021-12-06 19:29:20,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:29:20,067 INFO L225 Difference]: With dead ends: 28673 [2021-12-06 19:29:20,067 INFO L226 Difference]: Without dead ends: 28525 [2021-12-06 19:29:20,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 304 SyntacticMatches, 3 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 1899 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=622, Invalid=9080, Unknown=0, NotChecked=0, Total=9702 [2021-12-06 19:29:20,068 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 1106 mSDsluCounter, 11843 mSDsCounter, 0 mSdLazyCounter, 8996 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 12190 SdHoareTripleChecker+Invalid, 9261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 8996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 208 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:29:20,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1106 Valid, 12190 Invalid, 9261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 8996 Invalid, 0 Unknown, 208 Unchecked, 2.7s Time] [2021-12-06 19:29:20,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28525 states. [2021-12-06 19:29:20,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28525 to 15148. [2021-12-06 19:29:20,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15148 states, 15146 states have (on average 1.1287468638584446) internal successors, (17096), 15147 states have internal predecessors, (17096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:20,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15148 states to 15148 states and 17096 transitions. [2021-12-06 19:29:20,260 INFO L78 Accepts]: Start accepts. Automaton has 15148 states and 17096 transitions. Word has length 166 [2021-12-06 19:29:20,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:29:20,261 INFO L470 AbstractCegarLoop]: Abstraction has 15148 states and 17096 transitions. [2021-12-06 19:29:20,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.0625) internal successors, (260), 64 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:20,261 INFO L276 IsEmpty]: Start isEmpty. Operand 15148 states and 17096 transitions. [2021-12-06 19:29:20,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-06 19:29:20,267 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:29:20,267 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:29:20,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-12-06 19:29:20,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:29:20,468 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:29:20,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:29:20,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1273205997, now seen corresponding path program 17 times [2021-12-06 19:29:20,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:29:20,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046512717] [2021-12-06 19:29:20,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:29:20,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:29:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 91 proven. 539 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:29:20,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:29:20,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046512717] [2021-12-06 19:29:20,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046512717] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:29:20,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104841723] [2021-12-06 19:29:20,766 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:29:20,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:29:20,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:29:20,767 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:29:20,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-12-06 19:29:20,949 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-12-06 19:29:20,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:29:20,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-06 19:29:20,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:29:21,520 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 120 proven. 510 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:29:21,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:29:21,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-12-06 19:29:22,326 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 120 proven. 510 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:29:22,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104841723] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:29:22,326 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:29:22,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 55 [2021-12-06 19:29:22,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044741964] [2021-12-06 19:29:22,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:29:22,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-12-06 19:29:22,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:29:22,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-12-06 19:29:22,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=2664, Unknown=0, NotChecked=0, Total=3080 [2021-12-06 19:29:22,328 INFO L87 Difference]: Start difference. First operand 15148 states and 17096 transitions. Second operand has 56 states, 55 states have (on average 7.163636363636364) internal successors, (394), 56 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:23,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:29:23,584 INFO L93 Difference]: Finished difference Result 22922 states and 25817 transitions. [2021-12-06 19:29:23,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-06 19:29:23,584 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 7.163636363636364) internal successors, (394), 56 states have internal predecessors, (394), 0 states have call successors, (0), 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 169 [2021-12-06 19:29:23,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:29:23,597 INFO L225 Difference]: With dead ends: 22922 [2021-12-06 19:29:23,597 INFO L226 Difference]: Without dead ends: 22922 [2021-12-06 19:29:23,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 303 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1283 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1219, Invalid=4633, Unknown=0, NotChecked=0, Total=5852 [2021-12-06 19:29:23,598 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 959 mSDsluCounter, 2293 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:29:23,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [959 Valid, 2445 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 19:29:23,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22922 states. [2021-12-06 19:29:23,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22922 to 15701. [2021-12-06 19:29:23,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15701 states, 15699 states have (on average 1.1287343142875343) internal successors, (17720), 15700 states have internal predecessors, (17720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:23,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15701 states to 15701 states and 17720 transitions. [2021-12-06 19:29:23,745 INFO L78 Accepts]: Start accepts. Automaton has 15701 states and 17720 transitions. Word has length 169 [2021-12-06 19:29:23,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:29:23,745 INFO L470 AbstractCegarLoop]: Abstraction has 15701 states and 17720 transitions. [2021-12-06 19:29:23,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 7.163636363636364) internal successors, (394), 56 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:23,745 INFO L276 IsEmpty]: Start isEmpty. Operand 15701 states and 17720 transitions. [2021-12-06 19:29:23,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-06 19:29:23,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:29:23,767 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:29:23,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-12-06 19:29:23,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:29:23,967 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:29:23,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:29:23,968 INFO L85 PathProgramCache]: Analyzing trace with hash 12352, now seen corresponding path program 22 times [2021-12-06 19:29:23,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:29:23,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127837193] [2021-12-06 19:29:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:29:23,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:29:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 325 proven. 755 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:29:24,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:29:24,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127837193] [2021-12-06 19:29:24,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127837193] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:29:24,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731276402] [2021-12-06 19:29:24,440 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:29:24,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:29:24,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:29:24,443 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:29:24,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-12-06 19:29:24,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:29:24,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:29:24,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 104 conjunts are in the unsatisfiable core [2021-12-06 19:29:24,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:29:24,592 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:29:24,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:29:25,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-06 19:29:26,572 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:29:26,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-12-06 19:29:26,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 392 proven. 688 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:29:26,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:29:28,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:29:28,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:29:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 435 proven. 645 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:29:30,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731276402] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:29:30,993 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:29:30,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 40, 40] total 114 [2021-12-06 19:29:30,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829831411] [2021-12-06 19:29:30,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:29:30,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2021-12-06 19:29:30,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:29:30,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-12-06 19:29:30,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1359, Invalid=11751, Unknown=0, NotChecked=0, Total=13110 [2021-12-06 19:29:30,995 INFO L87 Difference]: Start difference. First operand 15701 states and 17720 transitions. Second operand has 115 states, 114 states have (on average 4.4035087719298245) internal successors, (502), 115 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:39,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:29:39,202 INFO L93 Difference]: Finished difference Result 29814 states and 33678 transitions. [2021-12-06 19:29:39,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-12-06 19:29:39,203 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 114 states have (on average 4.4035087719298245) internal successors, (502), 115 states have internal predecessors, (502), 0 states have call successors, (0), 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 170 [2021-12-06 19:29:39,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:29:39,221 INFO L225 Difference]: With dead ends: 29814 [2021-12-06 19:29:39,221 INFO L226 Difference]: Without dead ends: 29814 [2021-12-06 19:29:39,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5525 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=6552, Invalid=27488, Unknown=0, NotChecked=0, Total=34040 [2021-12-06 19:29:39,223 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 2136 mSDsluCounter, 7105 mSDsCounter, 0 mSdLazyCounter, 9303 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 7351 SdHoareTripleChecker+Invalid, 9777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 9303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 299 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:29:39,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2136 Valid, 7351 Invalid, 9777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 9303 Invalid, 0 Unknown, 299 Unchecked, 3.6s Time] [2021-12-06 19:29:39,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29814 states. [2021-12-06 19:29:39,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29814 to 15809. [2021-12-06 19:29:39,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15809 states, 15807 states have (on average 1.1288669576769785) internal successors, (17844), 15808 states have internal predecessors, (17844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:39,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15809 states to 15809 states and 17844 transitions. [2021-12-06 19:29:39,415 INFO L78 Accepts]: Start accepts. Automaton has 15809 states and 17844 transitions. Word has length 170 [2021-12-06 19:29:39,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:29:39,415 INFO L470 AbstractCegarLoop]: Abstraction has 15809 states and 17844 transitions. [2021-12-06 19:29:39,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 114 states have (on average 4.4035087719298245) internal successors, (502), 115 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:39,416 INFO L276 IsEmpty]: Start isEmpty. Operand 15809 states and 17844 transitions. [2021-12-06 19:29:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-06 19:29:39,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:29:39,422 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 13, 13, 13, 13, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:29:39,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-12-06 19:29:39,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:29:39,623 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:29:39,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:29:39,624 INFO L85 PathProgramCache]: Analyzing trace with hash 911176794, now seen corresponding path program 9 times [2021-12-06 19:29:39,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:29:39,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989180724] [2021-12-06 19:29:39,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:29:39,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:29:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 57 proven. 915 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:29:40,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:29:40,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989180724] [2021-12-06 19:29:40,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989180724] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:29:40,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705530465] [2021-12-06 19:29:40,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:29:40,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:29:40,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:29:40,132 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:29:40,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-12-06 19:29:40,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-12-06 19:29:40,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:29:40,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 105 conjunts are in the unsatisfiable core [2021-12-06 19:29:40,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:29:41,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:29:41,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:29:41,440 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 57 proven. 915 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:29:41,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:29:41,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:29:41,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:29:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 57 proven. 915 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:29:41,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705530465] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:29:41,794 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:29:41,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 61 [2021-12-06 19:29:41,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518786284] [2021-12-06 19:29:41,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:29:41,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-12-06 19:29:41,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:29:41,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-12-06 19:29:41,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=3482, Unknown=0, NotChecked=0, Total=3660 [2021-12-06 19:29:41,795 INFO L87 Difference]: Start difference. First operand 15809 states and 17844 transitions. Second operand has 61 states, 61 states have (on average 4.622950819672131) internal successors, (282), 61 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:45,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:29:45,150 INFO L93 Difference]: Finished difference Result 28748 states and 32376 transitions. [2021-12-06 19:29:45,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-12-06 19:29:45,151 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.622950819672131) internal successors, (282), 61 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2021-12-06 19:29:45,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:29:45,171 INFO L225 Difference]: With dead ends: 28748 [2021-12-06 19:29:45,171 INFO L226 Difference]: Without dead ends: 28597 [2021-12-06 19:29:45,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 319 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 1713 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=591, Invalid=8151, Unknown=0, NotChecked=0, Total=8742 [2021-12-06 19:29:45,172 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 878 mSDsluCounter, 10790 mSDsCounter, 0 mSdLazyCounter, 8140 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 11112 SdHoareTripleChecker+Invalid, 8434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 8140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:29:45,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [878 Valid, 11112 Invalid, 8434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 8140 Invalid, 0 Unknown, 247 Unchecked, 2.3s Time] [2021-12-06 19:29:45,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28597 states. [2021-12-06 19:29:45,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28597 to 17249. [2021-12-06 19:29:45,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17249 states, 17247 states have (on average 1.129703716588392) internal successors, (19484), 17248 states have internal predecessors, (19484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:45,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17249 states to 17249 states and 19484 transitions. [2021-12-06 19:29:45,373 INFO L78 Accepts]: Start accepts. Automaton has 17249 states and 19484 transitions. Word has length 173 [2021-12-06 19:29:45,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:29:45,373 INFO L470 AbstractCegarLoop]: Abstraction has 17249 states and 19484 transitions. [2021-12-06 19:29:45,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.622950819672131) internal successors, (282), 61 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:45,373 INFO L276 IsEmpty]: Start isEmpty. Operand 17249 states and 19484 transitions. [2021-12-06 19:29:45,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 19:29:45,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:29:45,380 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:29:45,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-12-06 19:29:45,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-12-06 19:29:45,581 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:29:45,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:29:45,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2108414055, now seen corresponding path program 8 times [2021-12-06 19:29:45,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:29:45,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022364017] [2021-12-06 19:29:45,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:29:45,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:29:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:45,926 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 145 proven. 500 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 19:29:45,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:29:45,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022364017] [2021-12-06 19:29:45,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022364017] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:29:45,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417566118] [2021-12-06 19:29:45,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:29:45,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:29:45,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:29:45,927 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:29:45,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-12-06 19:29:46,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:29:46,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:29:46,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 90 conjunts are in the unsatisfiable core [2021-12-06 19:29:46,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:29:46,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:29:46,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:29:46,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-06 19:29:47,002 INFO L354 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2021-12-06 19:29:47,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 23 [2021-12-06 19:29:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 22 proven. 628 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 19:29:47,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:29:47,539 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2963 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_2963) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 8)) 0)) is different from false [2021-12-06 19:29:47,544 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:29:47,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 19:29:47,548 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:29:47,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2021-12-06 19:29:47,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:29:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 17 proven. 633 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 19:29:47,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417566118] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:29:47,831 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:29:47,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 30, 30] total 55 [2021-12-06 19:29:47,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224307071] [2021-12-06 19:29:47,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:29:47,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-12-06 19:29:47,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:29:47,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-12-06 19:29:47,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2705, Unknown=1, NotChecked=104, Total=2970 [2021-12-06 19:29:47,833 INFO L87 Difference]: Start difference. First operand 17249 states and 19484 transitions. Second operand has 55 states, 55 states have (on average 5.036363636363636) internal successors, (277), 55 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:49,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:29:49,404 INFO L93 Difference]: Finished difference Result 18368 states and 20668 transitions. [2021-12-06 19:29:49,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 19:29:49,405 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 5.036363636363636) internal successors, (277), 55 states have internal predecessors, (277), 0 states have call successors, (0), 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 175 [2021-12-06 19:29:49,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:29:49,412 INFO L225 Difference]: With dead ends: 18368 [2021-12-06 19:29:49,413 INFO L226 Difference]: Without dead ends: 11909 [2021-12-06 19:29:49,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 316 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=282, Invalid=5123, Unknown=1, NotChecked=144, Total=5550 [2021-12-06 19:29:49,413 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 308 mSDsluCounter, 3913 mSDsCounter, 0 mSdLazyCounter, 3079 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 4040 SdHoareTripleChecker+Invalid, 3839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 739 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:29:49,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 4040 Invalid, 3839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 3079 Invalid, 0 Unknown, 739 Unchecked, 0.9s Time] [2021-12-06 19:29:49,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11909 states. [2021-12-06 19:29:49,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11909 to 9281. [2021-12-06 19:29:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9281 states, 9279 states have (on average 1.1278154973596293) internal successors, (10465), 9280 states have internal predecessors, (10465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:49,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9281 states to 9281 states and 10465 transitions. [2021-12-06 19:29:49,495 INFO L78 Accepts]: Start accepts. Automaton has 9281 states and 10465 transitions. Word has length 175 [2021-12-06 19:29:49,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:29:49,495 INFO L470 AbstractCegarLoop]: Abstraction has 9281 states and 10465 transitions. [2021-12-06 19:29:49,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 5.036363636363636) internal successors, (277), 55 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:49,495 INFO L276 IsEmpty]: Start isEmpty. Operand 9281 states and 10465 transitions. [2021-12-06 19:29:49,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-06 19:29:49,499 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:29:49,499 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:29:49,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-12-06 19:29:49,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-12-06 19:29:49,700 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:29:49,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:29:49,701 INFO L85 PathProgramCache]: Analyzing trace with hash -405862499, now seen corresponding path program 10 times [2021-12-06 19:29:49,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:29:49,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629702904] [2021-12-06 19:29:49,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:29:49,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:29:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:50,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 276 proven. 749 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:29:50,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:29:50,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629702904] [2021-12-06 19:29:50,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629702904] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:29:50,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442285071] [2021-12-06 19:29:50,209 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:29:50,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:29:50,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:29:50,209 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:29:50,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-12-06 19:29:50,359 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:29:50,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:29:50,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 99 conjunts are in the unsatisfiable core [2021-12-06 19:29:50,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:29:50,376 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:29:50,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:29:51,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-06 19:29:52,241 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:29:52,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-12-06 19:29:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 338 proven. 687 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:29:52,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:29:54,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:29:54,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:29:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 378 proven. 647 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:29:56,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442285071] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:29:56,621 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:29:56,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 38, 38] total 107 [2021-12-06 19:29:56,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884388737] [2021-12-06 19:29:56,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:29:56,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2021-12-06 19:29:56,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:29:56,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-12-06 19:29:56,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1109, Invalid=10447, Unknown=0, NotChecked=0, Total=11556 [2021-12-06 19:29:56,623 INFO L87 Difference]: Start difference. First operand 9281 states and 10465 transitions. Second operand has 108 states, 107 states have (on average 4.747663551401869) internal successors, (508), 108 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:06,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:06,069 INFO L93 Difference]: Finished difference Result 17544 states and 19516 transitions. [2021-12-06 19:30:06,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-12-06 19:30:06,070 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 4.747663551401869) internal successors, (508), 108 states have internal predecessors, (508), 0 states have call successors, (0), 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 177 [2021-12-06 19:30:06,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:06,080 INFO L225 Difference]: With dead ends: 17544 [2021-12-06 19:30:06,080 INFO L226 Difference]: Without dead ends: 17452 [2021-12-06 19:30:06,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4994 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=6710, Invalid=27330, Unknown=0, NotChecked=0, Total=34040 [2021-12-06 19:30:06,081 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 2760 mSDsluCounter, 7796 mSDsCounter, 0 mSdLazyCounter, 11526 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2760 SdHoareTripleChecker+Valid, 8034 SdHoareTripleChecker+Invalid, 12139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 11526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 314 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:06,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2760 Valid, 8034 Invalid, 12139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 11526 Invalid, 0 Unknown, 314 Unchecked, 4.4s Time] [2021-12-06 19:30:06,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17452 states. [2021-12-06 19:30:06,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17452 to 8121. [2021-12-06 19:30:06,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8121 states, 8119 states have (on average 1.1245227244734572) internal successors, (9130), 8120 states have internal predecessors, (9130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:06,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8121 states to 8121 states and 9130 transitions. [2021-12-06 19:30:06,176 INFO L78 Accepts]: Start accepts. Automaton has 8121 states and 9130 transitions. Word has length 177 [2021-12-06 19:30:06,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:06,176 INFO L470 AbstractCegarLoop]: Abstraction has 8121 states and 9130 transitions. [2021-12-06 19:30:06,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 4.747663551401869) internal successors, (508), 108 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:06,177 INFO L276 IsEmpty]: Start isEmpty. Operand 8121 states and 9130 transitions. [2021-12-06 19:30:06,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-06 19:30:06,180 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:06,180 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:06,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-12-06 19:30:06,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-12-06 19:30:06,381 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:30:06,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:06,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1861973912, now seen corresponding path program 23 times [2021-12-06 19:30:06,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:06,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286169690] [2021-12-06 19:30:06,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:06,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1269 backedges. 742 proven. 526 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:30:06,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:06,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286169690] [2021-12-06 19:30:06,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286169690] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:06,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529304193] [2021-12-06 19:30:06,900 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:30:06,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:06,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:06,900 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:06,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-12-06 19:30:07,180 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-12-06 19:30:07,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:07,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 81 conjunts are in the unsatisfiable core [2021-12-06 19:30:07,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:07,201 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:30:07,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:30:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1269 backedges. 833 proven. 435 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:30:08,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1269 backedges. 833 proven. 435 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:30:09,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529304193] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:09,428 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:09,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 94 [2021-12-06 19:30:09,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906485257] [2021-12-06 19:30:09,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:09,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-12-06 19:30:09,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:09,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-12-06 19:30:09,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1355, Invalid=7387, Unknown=0, NotChecked=0, Total=8742 [2021-12-06 19:30:09,430 INFO L87 Difference]: Start difference. First operand 8121 states and 9130 transitions. Second operand has 94 states, 94 states have (on average 4.627659574468085) internal successors, (435), 94 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:18,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:18,985 INFO L93 Difference]: Finished difference Result 25673 states and 28094 transitions. [2021-12-06 19:30:18,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2021-12-06 19:30:18,985 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 4.627659574468085) internal successors, (435), 94 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2021-12-06 19:30:18,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:19,000 INFO L225 Difference]: With dead ends: 25673 [2021-12-06 19:30:19,001 INFO L226 Difference]: Without dead ends: 25561 [2021-12-06 19:30:19,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 307 SyntacticMatches, 1 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23111 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=16054, Invalid=59296, Unknown=0, NotChecked=0, Total=75350 [2021-12-06 19:30:19,003 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 3444 mSDsluCounter, 3939 mSDsCounter, 0 mSdLazyCounter, 4887 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3444 SdHoareTripleChecker+Valid, 4134 SdHoareTripleChecker+Invalid, 5120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 4887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:19,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3444 Valid, 4134 Invalid, 5120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 4887 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 19:30:19,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25561 states. [2021-12-06 19:30:19,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25561 to 10010. [2021-12-06 19:30:19,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10010 states, 10008 states have (on average 1.1282973621103118) internal successors, (11292), 10009 states have internal predecessors, (11292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:19,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10010 states to 10010 states and 11292 transitions. [2021-12-06 19:30:19,166 INFO L78 Accepts]: Start accepts. Automaton has 10010 states and 11292 transitions. Word has length 182 [2021-12-06 19:30:19,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:19,166 INFO L470 AbstractCegarLoop]: Abstraction has 10010 states and 11292 transitions. [2021-12-06 19:30:19,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 4.627659574468085) internal successors, (435), 94 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:19,166 INFO L276 IsEmpty]: Start isEmpty. Operand 10010 states and 11292 transitions. [2021-12-06 19:30:19,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-06 19:30:19,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:19,170 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:19,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-12-06 19:30:19,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-12-06 19:30:19,372 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:30:19,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:19,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1393554368, now seen corresponding path program 18 times [2021-12-06 19:30:19,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:19,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427357046] [2021-12-06 19:30:19,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:19,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 19 proven. 729 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:30:20,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:20,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427357046] [2021-12-06 19:30:20,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427357046] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:20,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144291801] [2021-12-06 19:30:20,001 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:30:20,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:20,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:20,001 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:20,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-12-06 19:30:20,337 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-12-06 19:30:20,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:20,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 122 conjunts are in the unsatisfiable core [2021-12-06 19:30:20,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:20,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:30:20,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:20,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 19:30:24,048 INFO L354 Elim1Store]: treesize reduction 32, result has 8.6 percent of original size [2021-12-06 19:30:24,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 20 [2021-12-06 19:30:24,094 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 19 proven. 729 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:30:24,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:24,933 INFO L354 Elim1Store]: treesize reduction 60, result has 41.2 percent of original size [2021-12-06 19:30:24,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 453 treesize of output 388 [2021-12-06 19:30:24,945 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:30:24,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 278 treesize of output 264 [2021-12-06 19:30:27,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 65 [2021-12-06 19:30:27,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:30:27,395 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:30:27,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 278 treesize of output 270 [2021-12-06 19:30:28,953 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 44 proven. 704 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:30:28,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144291801] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:28,953 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:28,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 36] total 89 [2021-12-06 19:30:28,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484118361] [2021-12-06 19:30:28,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:28,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-12-06 19:30:28,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:28,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-12-06 19:30:28,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=7522, Unknown=0, NotChecked=0, Total=7832 [2021-12-06 19:30:28,955 INFO L87 Difference]: Start difference. First operand 10010 states and 11292 transitions. Second operand has 89 states, 89 states have (on average 4.831460674157303) internal successors, (430), 89 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:33,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:33,302 INFO L93 Difference]: Finished difference Result 23043 states and 25922 transitions. [2021-12-06 19:30:33,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-06 19:30:33,303 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 4.831460674157303) internal successors, (430), 89 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2021-12-06 19:30:33,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:33,317 INFO L225 Difference]: With dead ends: 23043 [2021-12-06 19:30:33,317 INFO L226 Difference]: Without dead ends: 22885 [2021-12-06 19:30:33,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1874 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=510, Invalid=12372, Unknown=0, NotChecked=0, Total=12882 [2021-12-06 19:30:33,318 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 690 mSDsluCounter, 8163 mSDsCounter, 0 mSdLazyCounter, 4142 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 8399 SdHoareTripleChecker+Invalid, 5774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 4142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1604 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:33,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 8399 Invalid, 5774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 4142 Invalid, 0 Unknown, 1604 Unchecked, 1.5s Time] [2021-12-06 19:30:33,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22885 states. [2021-12-06 19:30:33,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22885 to 15678. [2021-12-06 19:30:33,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15678 states, 15676 states have (on average 1.128285276856341) internal successors, (17687), 15677 states have internal predecessors, (17687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:33,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15678 states to 15678 states and 17687 transitions. [2021-12-06 19:30:33,465 INFO L78 Accepts]: Start accepts. Automaton has 15678 states and 17687 transitions. Word has length 182 [2021-12-06 19:30:33,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:33,465 INFO L470 AbstractCegarLoop]: Abstraction has 15678 states and 17687 transitions. [2021-12-06 19:30:33,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 4.831460674157303) internal successors, (430), 89 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:33,466 INFO L276 IsEmpty]: Start isEmpty. Operand 15678 states and 17687 transitions. [2021-12-06 19:30:33,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-06 19:30:33,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:33,472 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:33,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-12-06 19:30:33,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-12-06 19:30:33,673 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:30:33,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:33,674 INFO L85 PathProgramCache]: Analyzing trace with hash 653430917, now seen corresponding path program 24 times [2021-12-06 19:30:33,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:33,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45416381] [2021-12-06 19:30:33,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:33,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 65 proven. 1264 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:30:34,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:34,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45416381] [2021-12-06 19:30:34,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45416381] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:34,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171099896] [2021-12-06 19:30:34,338 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:30:34,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:34,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:34,339 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:34,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-12-06 19:30:35,206 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-12-06 19:30:35,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:35,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 123 conjunts are in the unsatisfiable core [2021-12-06 19:30:35,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:35,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 65 proven. 1264 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:30:36,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:36,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:30:36,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:30:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 65 proven. 1264 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:30:36,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171099896] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:36,523 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:36,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 42] total 72 [2021-12-06 19:30:36,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602138784] [2021-12-06 19:30:36,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:36,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-12-06 19:30:36,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:36,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-12-06 19:30:36,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=4902, Unknown=0, NotChecked=0, Total=5112 [2021-12-06 19:30:36,524 INFO L87 Difference]: Start difference. First operand 15678 states and 17687 transitions. Second operand has 72 states, 72 states have (on average 4.041666666666667) internal successors, (291), 72 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:41,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:41,556 INFO L93 Difference]: Finished difference Result 32895 states and 37056 transitions. [2021-12-06 19:30:41,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-12-06 19:30:41,557 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.041666666666667) internal successors, (291), 72 states have internal predecessors, (291), 0 states have call successors, (0), 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 186 [2021-12-06 19:30:41,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:41,577 INFO L225 Difference]: With dead ends: 32895 [2021-12-06 19:30:41,577 INFO L226 Difference]: Without dead ends: 32730 [2021-12-06 19:30:41,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 340 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 2426 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=767, Invalid=11443, Unknown=0, NotChecked=0, Total=12210 [2021-12-06 19:30:41,578 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 1911 mSDsluCounter, 14033 mSDsCounter, 0 mSdLazyCounter, 11650 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 14417 SdHoareTripleChecker+Invalid, 12078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 11650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 295 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:41,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1911 Valid, 14417 Invalid, 12078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 11650 Invalid, 0 Unknown, 295 Unchecked, 3.5s Time] [2021-12-06 19:30:41,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32730 states. [2021-12-06 19:30:41,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32730 to 15718. [2021-12-06 19:30:41,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15718 states, 15716 states have (on average 1.128531432934589) internal successors, (17736), 15717 states have internal predecessors, (17736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:41,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15718 states to 15718 states and 17736 transitions. [2021-12-06 19:30:41,755 INFO L78 Accepts]: Start accepts. Automaton has 15718 states and 17736 transitions. Word has length 186 [2021-12-06 19:30:41,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:41,755 INFO L470 AbstractCegarLoop]: Abstraction has 15718 states and 17736 transitions. [2021-12-06 19:30:41,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.041666666666667) internal successors, (291), 72 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:41,756 INFO L276 IsEmpty]: Start isEmpty. Operand 15718 states and 17736 transitions. [2021-12-06 19:30:41,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-06 19:30:41,762 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:41,762 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:41,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-12-06 19:30:41,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:41,963 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:30:41,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:41,964 INFO L85 PathProgramCache]: Analyzing trace with hash -81965155, now seen corresponding path program 19 times [2021-12-06 19:30:41,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:41,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114757028] [2021-12-06 19:30:41,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:41,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 120 proven. 665 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:30:42,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:42,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114757028] [2021-12-06 19:30:42,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114757028] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:42,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807504278] [2021-12-06 19:30:42,298 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:30:42,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:42,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:42,298 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:42,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-12-06 19:30:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:42,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 72 conjunts are in the unsatisfiable core [2021-12-06 19:30:42,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:42,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:30:42,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 19:30:42,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:30:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 153 proven. 632 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:30:43,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 190 proven. 595 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:30:44,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807504278] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:44,692 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:44,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 69 [2021-12-06 19:30:44,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137986878] [2021-12-06 19:30:44,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:44,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-12-06 19:30:44,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:44,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-12-06 19:30:44,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=4344, Unknown=0, NotChecked=0, Total=4830 [2021-12-06 19:30:44,694 INFO L87 Difference]: Start difference. First operand 15718 states and 17736 transitions. Second operand has 70 states, 69 states have (on average 7.811594202898551) internal successors, (539), 70 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:47,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:47,110 INFO L93 Difference]: Finished difference Result 29196 states and 32938 transitions. [2021-12-06 19:30:47,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-12-06 19:30:47,110 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 7.811594202898551) internal successors, (539), 70 states have internal predecessors, (539), 0 states have call successors, (0), 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 186 [2021-12-06 19:30:47,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:47,132 INFO L225 Difference]: With dead ends: 29196 [2021-12-06 19:30:47,132 INFO L226 Difference]: Without dead ends: 29196 [2021-12-06 19:30:47,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 325 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2184, Invalid=9806, Unknown=0, NotChecked=0, Total=11990 [2021-12-06 19:30:47,133 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1075 mSDsluCounter, 3304 mSDsCounter, 0 mSdLazyCounter, 3527 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 3457 SdHoareTripleChecker+Invalid, 3599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:47,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 3457 Invalid, 3599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 3527 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 19:30:47,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29196 states. [2021-12-06 19:30:47,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29196 to 16399. [2021-12-06 19:30:47,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16399 states, 16397 states have (on average 1.1286210892236386) internal successors, (18506), 16398 states have internal predecessors, (18506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:47,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16399 states to 16399 states and 18506 transitions. [2021-12-06 19:30:47,316 INFO L78 Accepts]: Start accepts. Automaton has 16399 states and 18506 transitions. Word has length 186 [2021-12-06 19:30:47,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:47,317 INFO L470 AbstractCegarLoop]: Abstraction has 16399 states and 18506 transitions. [2021-12-06 19:30:47,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 7.811594202898551) internal successors, (539), 70 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:47,317 INFO L276 IsEmpty]: Start isEmpty. Operand 16399 states and 18506 transitions. [2021-12-06 19:30:47,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:30:47,323 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:47,324 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:47,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-12-06 19:30:47,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:47,525 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:30:47,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:47,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2009775582, now seen corresponding path program 25 times [2021-12-06 19:30:47,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:47,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646037385] [2021-12-06 19:30:47,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:47,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 435 proven. 959 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:30:48,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:48,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646037385] [2021-12-06 19:30:48,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646037385] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:48,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48651891] [2021-12-06 19:30:48,204 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:30:48,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:48,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:48,205 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:48,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-12-06 19:30:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:48,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 100 conjunts are in the unsatisfiable core [2021-12-06 19:30:48,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:49,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 496 proven. 898 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:30:49,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:50,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:30:50,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 496 proven. 898 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:30:50,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48651891] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:50,307 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:50,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 40, 40] total 82 [2021-12-06 19:30:50,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582820926] [2021-12-06 19:30:50,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:50,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-12-06 19:30:50,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:50,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-12-06 19:30:50,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=6182, Unknown=0, NotChecked=0, Total=6806 [2021-12-06 19:30:50,308 INFO L87 Difference]: Start difference. First operand 16399 states and 18506 transitions. Second operand has 83 states, 82 states have (on average 4.7317073170731705) internal successors, (388), 83 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:55,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:55,443 INFO L93 Difference]: Finished difference Result 35551 states and 40050 transitions. [2021-12-06 19:30:55,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-12-06 19:30:55,443 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 4.7317073170731705) internal successors, (388), 83 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-12-06 19:30:55,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:55,469 INFO L225 Difference]: With dead ends: 35551 [2021-12-06 19:30:55,469 INFO L226 Difference]: Without dead ends: 35551 [2021-12-06 19:30:55,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 334 SyntacticMatches, 2 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2909 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3478, Invalid=14882, Unknown=0, NotChecked=0, Total=18360 [2021-12-06 19:30:55,470 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 2098 mSDsluCounter, 5505 mSDsCounter, 0 mSdLazyCounter, 9226 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2098 SdHoareTripleChecker+Valid, 5708 SdHoareTripleChecker+Invalid, 9359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 9226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:55,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2098 Valid, 5708 Invalid, 9359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 9226 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-06 19:30:55,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35551 states. [2021-12-06 19:30:55,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35551 to 16635. [2021-12-06 19:30:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16635 states, 16633 states have (on average 1.129381350327662) internal successors, (18785), 16634 states have internal predecessors, (18785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:55,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16635 states to 16635 states and 18785 transitions. [2021-12-06 19:30:55,675 INFO L78 Accepts]: Start accepts. Automaton has 16635 states and 18785 transitions. Word has length 190 [2021-12-06 19:30:55,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:55,675 INFO L470 AbstractCegarLoop]: Abstraction has 16635 states and 18785 transitions. [2021-12-06 19:30:55,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 4.7317073170731705) internal successors, (388), 83 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:55,676 INFO L276 IsEmpty]: Start isEmpty. Operand 16635 states and 18785 transitions. [2021-12-06 19:30:55,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-06 19:30:55,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:55,682 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 17, 13, 13, 13, 13, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:55,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-12-06 19:30:55,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2021-12-06 19:30:55,884 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:30:55,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:55,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1900009554, now seen corresponding path program 11 times [2021-12-06 19:30:55,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:55,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12979184] [2021-12-06 19:30:55,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:55,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:56,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 675 proven. 576 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-06 19:30:56,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:56,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12979184] [2021-12-06 19:30:56,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12979184] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:56,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633330767] [2021-12-06 19:30:56,291 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:30:56,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:56,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:56,292 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:56,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-12-06 19:30:56,591 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-12-06 19:30:56,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:56,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 77 conjunts are in the unsatisfiable core [2021-12-06 19:30:56,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:56,616 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:30:56,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:30:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 754 proven. 503 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 19:30:57,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 754 proven. 497 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-06 19:30:58,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633330767] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:58,512 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:58,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 34] total 86 [2021-12-06 19:30:58,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743092231] [2021-12-06 19:30:58,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:58,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-12-06 19:30:58,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:58,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-12-06 19:30:58,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1235, Invalid=6075, Unknown=0, NotChecked=0, Total=7310 [2021-12-06 19:30:58,513 INFO L87 Difference]: Start difference. First operand 16635 states and 18785 transitions. Second operand has 86 states, 86 states have (on average 5.023255813953488) internal successors, (432), 86 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:03,767 INFO L93 Difference]: Finished difference Result 34910 states and 38377 transitions. [2021-12-06 19:31:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-12-06 19:31:03,768 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 5.023255813953488) internal successors, (432), 86 states have internal predecessors, (432), 0 states have call successors, (0), 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 191 [2021-12-06 19:31:03,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:03,790 INFO L225 Difference]: With dead ends: 34910 [2021-12-06 19:31:03,790 INFO L226 Difference]: Without dead ends: 33179 [2021-12-06 19:31:03,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 330 SyntacticMatches, 1 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13725 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=9982, Invalid=34750, Unknown=0, NotChecked=0, Total=44732 [2021-12-06 19:31:03,792 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 2243 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2243 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:03,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2243 Valid, 2187 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 2590 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 19:31:03,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33179 states. [2021-12-06 19:31:03,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33179 to 18247. [2021-12-06 19:31:03,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18247 states, 18245 states have (on average 1.130665935872842) internal successors, (20629), 18246 states have internal predecessors, (20629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:03,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18247 states to 18247 states and 20629 transitions. [2021-12-06 19:31:03,986 INFO L78 Accepts]: Start accepts. Automaton has 18247 states and 20629 transitions. Word has length 191 [2021-12-06 19:31:03,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:03,986 INFO L470 AbstractCegarLoop]: Abstraction has 18247 states and 20629 transitions. [2021-12-06 19:31:03,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 5.023255813953488) internal successors, (432), 86 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:03,987 INFO L276 IsEmpty]: Start isEmpty. Operand 18247 states and 20629 transitions. [2021-12-06 19:31:03,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-12-06 19:31:03,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:03,994 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:04,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-12-06 19:31:04,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:04,195 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:31:04,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:04,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2133573687, now seen corresponding path program 9 times [2021-12-06 19:31:04,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:04,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786677003] [2021-12-06 19:31:04,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:04,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 163 proven. 639 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 19:31:04,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:04,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786677003] [2021-12-06 19:31:04,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786677003] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:04,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148296547] [2021-12-06 19:31:04,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:31:04,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:04,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:04,630 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:04,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-12-06 19:31:04,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-06 19:31:04,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:31:04,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 94 conjunts are in the unsatisfiable core [2021-12-06 19:31:04,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:04,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:31:05,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:31:05,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-06 19:31:05,906 INFO L354 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2021-12-06 19:31:05,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 23 [2021-12-06 19:31:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 24 proven. 783 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 19:31:05,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:06,414 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3585 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_3585) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 9)) 0)) is different from false [2021-12-06 19:31:06,418 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:31:06,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 19:31:06,421 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:31:06,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2021-12-06 19:31:06,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:31:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 19 proven. 788 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 19:31:06,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148296547] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:06,697 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:06,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 32, 32] total 58 [2021-12-06 19:31:06,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868853401] [2021-12-06 19:31:06,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:06,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-12-06 19:31:06,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:06,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-12-06 19:31:06,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=3028, Unknown=1, NotChecked=110, Total=3306 [2021-12-06 19:31:06,698 INFO L87 Difference]: Start difference. First operand 18247 states and 20629 transitions. Second operand has 58 states, 58 states have (on average 5.137931034482759) internal successors, (298), 58 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:08,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:08,350 INFO L93 Difference]: Finished difference Result 23281 states and 26336 transitions. [2021-12-06 19:31:08,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-06 19:31:08,350 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.137931034482759) internal successors, (298), 58 states have internal predecessors, (298), 0 states have call successors, (0), 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 192 [2021-12-06 19:31:08,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:08,359 INFO L225 Difference]: With dead ends: 23281 [2021-12-06 19:31:08,359 INFO L226 Difference]: Without dead ends: 15998 [2021-12-06 19:31:08,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 349 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=251, Invalid=4582, Unknown=1, NotChecked=136, Total=4970 [2021-12-06 19:31:08,359 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 203 mSDsluCounter, 4690 mSDsCounter, 0 mSdLazyCounter, 3723 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 4832 SdHoareTripleChecker+Invalid, 4657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 922 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:08,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 4832 Invalid, 4657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3723 Invalid, 0 Unknown, 922 Unchecked, 1.2s Time] [2021-12-06 19:31:08,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15998 states. [2021-12-06 19:31:08,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15998 to 12165. [2021-12-06 19:31:08,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12165 states, 12163 states have (on average 1.1310531941132944) internal successors, (13757), 12164 states have internal predecessors, (13757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:08,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12165 states to 12165 states and 13757 transitions. [2021-12-06 19:31:08,460 INFO L78 Accepts]: Start accepts. Automaton has 12165 states and 13757 transitions. Word has length 192 [2021-12-06 19:31:08,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:08,460 INFO L470 AbstractCegarLoop]: Abstraction has 12165 states and 13757 transitions. [2021-12-06 19:31:08,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.137931034482759) internal successors, (298), 58 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:08,460 INFO L276 IsEmpty]: Start isEmpty. Operand 12165 states and 13757 transitions. [2021-12-06 19:31:08,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-12-06 19:31:08,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:08,466 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 16, 15, 15, 15, 15, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:08,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-12-06 19:31:08,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:08,667 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:31:08,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:08,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1582360968, now seen corresponding path program 12 times [2021-12-06 19:31:08,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:08,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721565390] [2021-12-06 19:31:08,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:08,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 65 proven. 1205 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:31:09,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:09,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721565390] [2021-12-06 19:31:09,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721565390] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:09,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898270772] [2021-12-06 19:31:09,260 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:31:09,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:09,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:09,261 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:09,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-12-06 19:31:10,325 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-12-06 19:31:10,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:31:10,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 132 conjunts are in the unsatisfiable core [2021-12-06 19:31:10,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:10,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:31:11,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:31:11,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 65 proven. 1211 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:31:11,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:11,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:31:11,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:31:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 65 proven. 1205 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:31:12,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898270772] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:12,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:12,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 45, 40] total 82 [2021-12-06 19:31:12,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86765517] [2021-12-06 19:31:12,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:12,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-12-06 19:31:12,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:12,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-12-06 19:31:12,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=6406, Unknown=0, NotChecked=0, Total=6642 [2021-12-06 19:31:12,211 INFO L87 Difference]: Start difference. First operand 12165 states and 13757 transitions. Second operand has 82 states, 82 states have (on average 4.646341463414634) internal successors, (381), 82 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) [2021-12-06 19:31:22,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:22,043 INFO L93 Difference]: Finished difference Result 22249 states and 24951 transitions. [2021-12-06 19:31:22,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2021-12-06 19:31:22,044 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 4.646341463414634) internal successors, (381), 82 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) Word has length 193 [2021-12-06 19:31:22,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:22,057 INFO L225 Difference]: With dead ends: 22249 [2021-12-06 19:31:22,057 INFO L226 Difference]: Without dead ends: 19886 [2021-12-06 19:31:22,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 342 SyntacticMatches, 3 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11071 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1764, Invalid=39242, Unknown=0, NotChecked=0, Total=41006 [2021-12-06 19:31:22,059 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 2266 mSDsluCounter, 19516 mSDsCounter, 0 mSdLazyCounter, 18865 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2266 SdHoareTripleChecker+Valid, 19901 SdHoareTripleChecker+Invalid, 19118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 18865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:22,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2266 Valid, 19901 Invalid, 19118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 18865 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-06 19:31:22,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19886 states. [2021-12-06 19:31:22,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19886 to 13236. [2021-12-06 19:31:22,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13236 states, 13234 states have (on average 1.1315550853861267) internal successors, (14975), 13235 states have internal predecessors, (14975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:22,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13236 states to 13236 states and 14975 transitions. [2021-12-06 19:31:22,188 INFO L78 Accepts]: Start accepts. Automaton has 13236 states and 14975 transitions. Word has length 193 [2021-12-06 19:31:22,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:22,188 INFO L470 AbstractCegarLoop]: Abstraction has 13236 states and 14975 transitions. [2021-12-06 19:31:22,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 4.646341463414634) internal successors, (381), 82 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) [2021-12-06 19:31:22,188 INFO L276 IsEmpty]: Start isEmpty. Operand 13236 states and 14975 transitions. [2021-12-06 19:31:22,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-06 19:31:22,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:22,194 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 17, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:22,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-12-06 19:31:22,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-12-06 19:31:22,395 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:31:22,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:22,396 INFO L85 PathProgramCache]: Analyzing trace with hash 674795569, now seen corresponding path program 13 times [2021-12-06 19:31:22,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:22,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787781574] [2021-12-06 19:31:22,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:22,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1324 backedges. 663 proven. 647 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 19:31:22,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:22,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787781574] [2021-12-06 19:31:22,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787781574] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:22,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715277476] [2021-12-06 19:31:22,858 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:31:22,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:22,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:22,858 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:22,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-12-06 19:31:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:23,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 73 conjunts are in the unsatisfiable core [2021-12-06 19:31:23,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:23,040 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:31:23,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:31:24,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1324 backedges. 748 proven. 562 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 19:31:24,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1324 backedges. 733 proven. 577 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 19:31:24,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715277476] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:24,810 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:24,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 89 [2021-12-06 19:31:24,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585904819] [2021-12-06 19:31:24,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:24,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-12-06 19:31:24,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:24,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-12-06 19:31:24,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1377, Invalid=6455, Unknown=0, NotChecked=0, Total=7832 [2021-12-06 19:31:24,811 INFO L87 Difference]: Start difference. First operand 13236 states and 14975 transitions. Second operand has 89 states, 89 states have (on average 4.831460674157303) internal successors, (430), 89 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:30,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:30,266 INFO L93 Difference]: Finished difference Result 25661 states and 28274 transitions. [2021-12-06 19:31:30,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2021-12-06 19:31:30,267 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 4.831460674157303) internal successors, (430), 89 states have internal predecessors, (430), 0 states have call successors, (0), 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 195 [2021-12-06 19:31:30,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:30,282 INFO L225 Difference]: With dead ends: 25661 [2021-12-06 19:31:30,282 INFO L226 Difference]: Without dead ends: 23554 [2021-12-06 19:31:30,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 337 SyntacticMatches, 1 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16739 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=11785, Invalid=41807, Unknown=0, NotChecked=0, Total=53592 [2021-12-06 19:31:30,284 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 2087 mSDsluCounter, 3043 mSDsCounter, 0 mSdLazyCounter, 3713 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2087 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 3866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 3713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:30,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2087 Valid, 3223 Invalid, 3866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 3713 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 19:31:30,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23554 states. [2021-12-06 19:31:30,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23554 to 12331. [2021-12-06 19:31:30,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12331 states, 12329 states have (on average 1.1302619839403034) internal successors, (13935), 12330 states have internal predecessors, (13935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:30,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12331 states to 12331 states and 13935 transitions. [2021-12-06 19:31:30,421 INFO L78 Accepts]: Start accepts. Automaton has 12331 states and 13935 transitions. Word has length 195 [2021-12-06 19:31:30,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:30,421 INFO L470 AbstractCegarLoop]: Abstraction has 12331 states and 13935 transitions. [2021-12-06 19:31:30,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 4.831460674157303) internal successors, (430), 89 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:30,421 INFO L276 IsEmpty]: Start isEmpty. Operand 12331 states and 13935 transitions. [2021-12-06 19:31:30,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-06 19:31:30,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:30,438 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:30,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-12-06 19:31:30,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-12-06 19:31:30,640 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:31:30,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:30,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1371536438, now seen corresponding path program 26 times [2021-12-06 19:31:30,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:30,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839237245] [2021-12-06 19:31:30,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:30,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:31,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1498 backedges. 69 proven. 1428 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:31:31,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:31,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839237245] [2021-12-06 19:31:31,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839237245] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:31,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597220553] [2021-12-06 19:31:31,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:31:31,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:31,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:31,341 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:31,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-12-06 19:31:31,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:31:31,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:31:31,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 127 conjunts are in the unsatisfiable core [2021-12-06 19:31:31,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:32,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:31:32,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:31:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1498 backedges. 69 proven. 1428 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:31:32,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:32,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:31:32,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:31:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1498 backedges. 69 proven. 1428 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:31:32,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597220553] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:32,828 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:32,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 44] total 73 [2021-12-06 19:31:32,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768842705] [2021-12-06 19:31:32,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:32,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-12-06 19:31:32,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:32,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-12-06 19:31:32,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=5046, Unknown=0, NotChecked=0, Total=5256 [2021-12-06 19:31:32,830 INFO L87 Difference]: Start difference. First operand 12331 states and 13935 transitions. Second operand has 73 states, 73 states have (on average 4.136986301369863) internal successors, (302), 73 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:38,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:38,401 INFO L93 Difference]: Finished difference Result 19929 states and 22334 transitions. [2021-12-06 19:31:38,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-12-06 19:31:38,402 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 4.136986301369863) internal successors, (302), 73 states have internal predecessors, (302), 0 states have call successors, (0), 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 196 [2021-12-06 19:31:38,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:38,411 INFO L225 Difference]: With dead ends: 19929 [2021-12-06 19:31:38,411 INFO L226 Difference]: Without dead ends: 18216 [2021-12-06 19:31:38,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 361 SyntacticMatches, 3 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 2455 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=791, Invalid=12091, Unknown=0, NotChecked=0, Total=12882 [2021-12-06 19:31:38,412 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 1830 mSDsluCounter, 17645 mSDsCounter, 0 mSdLazyCounter, 13074 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 18050 SdHoareTripleChecker+Invalid, 13813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 13074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 599 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:38,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1830 Valid, 18050 Invalid, 13813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 13074 Invalid, 0 Unknown, 599 Unchecked, 3.9s Time] [2021-12-06 19:31:38,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18216 states. [2021-12-06 19:31:38,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18216 to 13574. [2021-12-06 19:31:38,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13574 states, 13572 states have (on average 1.1314470969643384) internal successors, (15356), 13573 states have internal predecessors, (15356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13574 states to 13574 states and 15356 transitions. [2021-12-06 19:31:38,527 INFO L78 Accepts]: Start accepts. Automaton has 13574 states and 15356 transitions. Word has length 196 [2021-12-06 19:31:38,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:38,527 INFO L470 AbstractCegarLoop]: Abstraction has 13574 states and 15356 transitions. [2021-12-06 19:31:38,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 4.136986301369863) internal successors, (302), 73 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:38,527 INFO L276 IsEmpty]: Start isEmpty. Operand 13574 states and 15356 transitions. [2021-12-06 19:31:38,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-12-06 19:31:38,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:38,533 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:38,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-12-06 19:31:38,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-12-06 19:31:38,734 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:31:38,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:38,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2068921675, now seen corresponding path program 14 times [2021-12-06 19:31:38,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:38,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854497430] [2021-12-06 19:31:38,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:38,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1339 backedges. 378 proven. 953 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:31:39,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:39,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854497430] [2021-12-06 19:31:39,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854497430] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:39,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178419443] [2021-12-06 19:31:39,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:31:39,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:39,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:39,392 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:39,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-12-06 19:31:39,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:31:39,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:31:39,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 95 conjunts are in the unsatisfiable core [2021-12-06 19:31:39,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1339 backedges. 435 proven. 896 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:31:40,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:41,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:31:41,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1339 backedges. 435 proven. 896 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:31:41,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178419443] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:41,208 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:41,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 79 [2021-12-06 19:31:41,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24666974] [2021-12-06 19:31:41,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:41,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-12-06 19:31:41,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:41,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-12-06 19:31:41,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=723, Invalid=5597, Unknown=0, NotChecked=0, Total=6320 [2021-12-06 19:31:41,210 INFO L87 Difference]: Start difference. First operand 13574 states and 15356 transitions. Second operand has 80 states, 79 states have (on average 5.113924050632911) internal successors, (404), 80 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:45,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:45,121 INFO L93 Difference]: Finished difference Result 21208 states and 23510 transitions. [2021-12-06 19:31:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-06 19:31:45,121 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 5.113924050632911) internal successors, (404), 80 states have internal predecessors, (404), 0 states have call successors, (0), 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 197 [2021-12-06 19:31:45,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:45,133 INFO L225 Difference]: With dead ends: 21208 [2021-12-06 19:31:45,133 INFO L226 Difference]: Without dead ends: 18959 [2021-12-06 19:31:45,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 350 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2954 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2478, Invalid=10632, Unknown=0, NotChecked=0, Total=13110 [2021-12-06 19:31:45,134 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 1642 mSDsluCounter, 5315 mSDsCounter, 0 mSdLazyCounter, 8403 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 5507 SdHoareTripleChecker+Invalid, 8526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 8403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:45,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1642 Valid, 5507 Invalid, 8526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 8403 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 19:31:45,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18959 states. [2021-12-06 19:31:45,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18959 to 11925. [2021-12-06 19:31:45,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11925 states, 11923 states have (on average 1.1286588945735134) internal successors, (13457), 11924 states have internal predecessors, (13457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:45,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11925 states to 11925 states and 13457 transitions. [2021-12-06 19:31:45,280 INFO L78 Accepts]: Start accepts. Automaton has 11925 states and 13457 transitions. Word has length 197 [2021-12-06 19:31:45,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:45,280 INFO L470 AbstractCegarLoop]: Abstraction has 11925 states and 13457 transitions. [2021-12-06 19:31:45,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 5.113924050632911) internal successors, (404), 80 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:45,280 INFO L276 IsEmpty]: Start isEmpty. Operand 11925 states and 13457 transitions. [2021-12-06 19:31:45,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-12-06 19:31:45,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:45,284 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:45,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-12-06 19:31:45,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-12-06 19:31:45,485 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:31:45,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:45,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1353764976, now seen corresponding path program 20 times [2021-12-06 19:31:45,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:45,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550212374] [2021-12-06 19:31:45,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:45,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:46,168 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 21 proven. 895 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:31:46,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:46,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550212374] [2021-12-06 19:31:46,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550212374] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:46,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271180980] [2021-12-06 19:31:46,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:31:46,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:46,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:46,170 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:46,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-12-06 19:31:46,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:31:46,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:31:46,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 102 conjunts are in the unsatisfiable core [2021-12-06 19:31:46,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:46,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:31:46,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:31:46,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-06 19:31:47,797 INFO L354 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2021-12-06 19:31:47,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 23 [2021-12-06 19:31:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 21 proven. 895 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:31:47,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:48,353 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4007 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 10)) 0)) is different from false [2021-12-06 19:31:48,356 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:31:48,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 19:31:48,360 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:31:48,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2021-12-06 19:31:48,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:31:48,657 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 21 proven. 895 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:31:48,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271180980] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:48,657 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:48,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 34, 34] total 77 [2021-12-06 19:31:48,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686297540] [2021-12-06 19:31:48,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:48,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-12-06 19:31:48,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:48,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-12-06 19:31:48,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=5496, Unknown=1, NotChecked=148, Total=5852 [2021-12-06 19:31:48,659 INFO L87 Difference]: Start difference. First operand 11925 states and 13457 transitions. Second operand has 77 states, 77 states have (on average 5.428571428571429) internal successors, (418), 77 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) [2021-12-06 19:31:52,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:52,039 INFO L93 Difference]: Finished difference Result 28264 states and 31938 transitions. [2021-12-06 19:31:52,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-12-06 19:31:52,040 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 5.428571428571429) internal successors, (418), 77 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) Word has length 199 [2021-12-06 19:31:52,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:52,058 INFO L225 Difference]: With dead ends: 28264 [2021-12-06 19:31:52,058 INFO L226 Difference]: Without dead ends: 28087 [2021-12-06 19:31:52,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 355 SyntacticMatches, 5 SemanticMatches, 108 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 1578 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=405, Invalid=11370, Unknown=1, NotChecked=214, Total=11990 [2021-12-06 19:31:52,059 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 270 mSDsluCounter, 7201 mSDsCounter, 0 mSdLazyCounter, 7250 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 7346 SdHoareTripleChecker+Invalid, 8243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 7250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 975 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:52,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 7346 Invalid, 8243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 7250 Invalid, 0 Unknown, 975 Unchecked, 2.1s Time] [2021-12-06 19:31:52,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28087 states. [2021-12-06 19:31:52,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28087 to 21170. [2021-12-06 19:31:52,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21170 states, 21168 states have (on average 1.1302910052910053) internal successors, (23926), 21169 states have internal predecessors, (23926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21170 states to 21170 states and 23926 transitions. [2021-12-06 19:31:52,262 INFO L78 Accepts]: Start accepts. Automaton has 21170 states and 23926 transitions. Word has length 199 [2021-12-06 19:31:52,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:52,262 INFO L470 AbstractCegarLoop]: Abstraction has 21170 states and 23926 transitions. [2021-12-06 19:31:52,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 5.428571428571429) internal successors, (418), 77 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) [2021-12-06 19:31:52,262 INFO L276 IsEmpty]: Start isEmpty. Operand 21170 states and 23926 transitions. [2021-12-06 19:31:52,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-06 19:31:52,269 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:52,269 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:52,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-12-06 19:31:52,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:52,470 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:31:52,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:52,472 INFO L85 PathProgramCache]: Analyzing trace with hash -128250477, now seen corresponding path program 27 times [2021-12-06 19:31:52,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:52,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846675669] [2021-12-06 19:31:52,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:52,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:53,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1567 backedges. 496 proven. 1070 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:31:53,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:53,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846675669] [2021-12-06 19:31:53,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846675669] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:53,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646346806] [2021-12-06 19:31:53,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:31:53,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:53,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:53,175 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:53,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-12-06 19:31:54,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2021-12-06 19:31:54,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:31:54,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 88 conjunts are in the unsatisfiable core [2021-12-06 19:31:54,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:55,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1567 backedges. 561 proven. 1005 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:31:55,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:56,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-12-06 19:31:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1567 backedges. 561 proven. 1005 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:31:56,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646346806] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:56,863 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:56,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 42, 42] total 104 [2021-12-06 19:31:56,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254093846] [2021-12-06 19:31:56,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:56,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2021-12-06 19:31:56,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:56,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-12-06 19:31:56,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1403, Invalid=9517, Unknown=0, NotChecked=0, Total=10920 [2021-12-06 19:31:56,865 INFO L87 Difference]: Start difference. First operand 21170 states and 23926 transitions. Second operand has 105 states, 104 states have (on average 4.913461538461538) internal successors, (511), 105 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:02,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:32:02,175 INFO L93 Difference]: Finished difference Result 31420 states and 35176 transitions. [2021-12-06 19:32:02,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-12-06 19:32:02,175 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 4.913461538461538) internal successors, (511), 105 states have internal predecessors, (511), 0 states have call successors, (0), 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 200 [2021-12-06 19:32:02,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:32:02,195 INFO L225 Difference]: With dead ends: 31420 [2021-12-06 19:32:02,195 INFO L226 Difference]: Without dead ends: 31420 [2021-12-06 19:32:02,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 335 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4805 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4789, Invalid=20971, Unknown=0, NotChecked=0, Total=25760 [2021-12-06 19:32:02,197 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 2886 mSDsluCounter, 4995 mSDsCounter, 0 mSdLazyCounter, 7732 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2886 SdHoareTripleChecker+Valid, 5205 SdHoareTripleChecker+Invalid, 7948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 7732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:32:02,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2886 Valid, 5205 Invalid, 7948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 7732 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 19:32:02,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31420 states. [2021-12-06 19:32:02,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31420 to 21350. [2021-12-06 19:32:02,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21350 states, 21348 states have (on average 1.1305508712759977) internal successors, (24135), 21349 states have internal predecessors, (24135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21350 states to 21350 states and 24135 transitions. [2021-12-06 19:32:02,405 INFO L78 Accepts]: Start accepts. Automaton has 21350 states and 24135 transitions. Word has length 200 [2021-12-06 19:32:02,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:32:02,405 INFO L470 AbstractCegarLoop]: Abstraction has 21350 states and 24135 transitions. [2021-12-06 19:32:02,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 4.913461538461538) internal successors, (511), 105 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:02,406 INFO L276 IsEmpty]: Start isEmpty. Operand 21350 states and 24135 transitions. [2021-12-06 19:32:02,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-06 19:32:02,413 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:32:02,413 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:32:02,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-12-06 19:32:02,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:32:02,614 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:32:02,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:32:02,615 INFO L85 PathProgramCache]: Analyzing trace with hash 2012180947, now seen corresponding path program 21 times [2021-12-06 19:32:02,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:32:02,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299217692] [2021-12-06 19:32:02,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:32:02,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:32:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:32:02,977 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 153 proven. 804 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:32:02,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:32:02,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299217692] [2021-12-06 19:32:02,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299217692] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:32:02,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935320767] [2021-12-06 19:32:02,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:32:02,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:32:02,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:32:02,978 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:32:02,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-12-06 19:32:03,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-12-06 19:32:03,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:32:03,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-06 19:32:03,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:32:04,062 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 190 proven. 767 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:32:04,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:32:04,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-12-06 19:32:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 190 proven. 767 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:32:04,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935320767] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:32:04,844 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:32:04,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 27] total 66 [2021-12-06 19:32:04,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468646557] [2021-12-06 19:32:04,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:32:04,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-12-06 19:32:04,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:32:04,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-12-06 19:32:04,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=661, Invalid=3761, Unknown=0, NotChecked=0, Total=4422 [2021-12-06 19:32:04,846 INFO L87 Difference]: Start difference. First operand 21350 states and 24135 transitions. Second operand has 67 states, 66 states have (on average 8.318181818181818) internal successors, (549), 67 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:06,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:32:06,230 INFO L93 Difference]: Finished difference Result 28413 states and 32117 transitions. [2021-12-06 19:32:06,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-06 19:32:06,231 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 8.318181818181818) internal successors, (549), 67 states have internal predecessors, (549), 0 states have call successors, (0), 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 203 [2021-12-06 19:32:06,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:32:06,251 INFO L225 Difference]: With dead ends: 28413 [2021-12-06 19:32:06,251 INFO L226 Difference]: Without dead ends: 28413 [2021-12-06 19:32:06,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 364 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2113 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1632, Invalid=6740, Unknown=0, NotChecked=0, Total=8372 [2021-12-06 19:32:06,252 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 1437 mSDsluCounter, 2439 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:32:06,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1437 Valid, 2619 Invalid, 2445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 19:32:06,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28413 states. [2021-12-06 19:32:06,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28413 to 22268. [2021-12-06 19:32:06,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22268 states, 22266 states have (on average 1.1306476241803647) internal successors, (25175), 22267 states have internal predecessors, (25175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22268 states to 22268 states and 25175 transitions. [2021-12-06 19:32:06,497 INFO L78 Accepts]: Start accepts. Automaton has 22268 states and 25175 transitions. Word has length 203 [2021-12-06 19:32:06,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:32:06,497 INFO L470 AbstractCegarLoop]: Abstraction has 22268 states and 25175 transitions. [2021-12-06 19:32:06,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 8.318181818181818) internal successors, (549), 67 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:06,497 INFO L276 IsEmpty]: Start isEmpty. Operand 22268 states and 25175 transitions. [2021-12-06 19:32:06,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-06 19:32:06,504 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:32:06,504 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:32:06,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-12-06 19:32:06,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:32:06,705 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:32:06,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:32:06,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1019326183, now seen corresponding path program 28 times [2021-12-06 19:32:06,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:32:06,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531995025] [2021-12-06 19:32:06,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:32:06,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:32:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:32:07,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1676 backedges. 73 proven. 1602 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:32:07,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:32:07,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531995025] [2021-12-06 19:32:07,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531995025] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:32:07,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111313561] [2021-12-06 19:32:07,424 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:32:07,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:32:07,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:32:07,424 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:32:07,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-12-06 19:32:07,577 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:32:07,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:32:07,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 98 conjunts are in the unsatisfiable core [2021-12-06 19:32:07,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:32:07,597 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:32:07,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:32:08,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:32:10,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:32:10,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-06 19:32:10,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1676 backedges. 1009 proven. 666 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:32:10,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:32:12,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-12-06 19:32:12,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-06 19:32:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1676 backedges. 974 proven. 701 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:32:14,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111313561] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:32:14,854 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:32:14,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 133 [2021-12-06 19:32:14,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990850602] [2021-12-06 19:32:14,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:32:14,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2021-12-06 19:32:14,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:32:14,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2021-12-06 19:32:14,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1477, Invalid=16079, Unknown=0, NotChecked=0, Total=17556 [2021-12-06 19:32:14,856 INFO L87 Difference]: Start difference. First operand 22268 states and 25175 transitions. Second operand has 133 states, 133 states have (on average 4.496240601503759) internal successors, (598), 133 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:20,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:32:20,776 INFO L93 Difference]: Finished difference Result 24325 states and 27456 transitions. [2021-12-06 19:32:20,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-12-06 19:32:20,777 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 4.496240601503759) internal successors, (598), 133 states have internal predecessors, (598), 0 states have call successors, (0), 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 206 [2021-12-06 19:32:20,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:32:20,790 INFO L225 Difference]: With dead ends: 24325 [2021-12-06 19:32:20,790 INFO L226 Difference]: Without dead ends: 24177 [2021-12-06 19:32:20,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 360 SyntacticMatches, 2 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12919 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=4267, Invalid=43475, Unknown=0, NotChecked=0, Total=47742 [2021-12-06 19:32:20,792 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 601 mSDsluCounter, 6257 mSDsCounter, 0 mSdLazyCounter, 5350 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 6396 SdHoareTripleChecker+Invalid, 6181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 5350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 683 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:32:20,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 6396 Invalid, 6181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 5350 Invalid, 0 Unknown, 683 Unchecked, 1.6s Time] [2021-12-06 19:32:20,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24177 states. [2021-12-06 19:32:20,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24177 to 23462. [2021-12-06 19:32:20,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23462 states, 23460 states have (on average 1.1316709292412617) internal successors, (26549), 23461 states have internal predecessors, (26549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:20,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23462 states to 23462 states and 26549 transitions. [2021-12-06 19:32:20,983 INFO L78 Accepts]: Start accepts. Automaton has 23462 states and 26549 transitions. Word has length 206 [2021-12-06 19:32:20,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:32:20,984 INFO L470 AbstractCegarLoop]: Abstraction has 23462 states and 26549 transitions. [2021-12-06 19:32:20,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 4.496240601503759) internal successors, (598), 133 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:20,984 INFO L276 IsEmpty]: Start isEmpty. Operand 23462 states and 26549 transitions. [2021-12-06 19:32:20,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-06 19:32:20,993 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:32:20,994 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:32:21,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-12-06 19:32:21,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:32:21,195 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:32:21,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:32:21,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1989758977, now seen corresponding path program 10 times [2021-12-06 19:32:21,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:32:21,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365774881] [2021-12-06 19:32:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:32:21,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:32:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:32:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 181 proven. 795 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 19:32:21,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:32:21,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365774881] [2021-12-06 19:32:21,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365774881] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:32:21,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575165928] [2021-12-06 19:32:21,683 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:32:21,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:32:21,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:32:21,684 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:32:21,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-12-06 19:32:21,849 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:32:21,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:32:21,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 93 conjunts are in the unsatisfiable core [2021-12-06 19:32:21,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:32:21,871 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:32:21,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:32:22,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:32:22,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:32:22,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 19:32:24,964 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:32:24,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-12-06 19:32:25,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:32:25,693 INFO L354 Elim1Store]: treesize reduction 17, result has 43.3 percent of original size [2021-12-06 19:32:25,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26 [2021-12-06 19:32:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 621 proven. 366 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:32:25,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:32:27,800 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:32:27,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2021-12-06 19:32:27,804 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:32:27,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2021-12-06 19:32:27,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-06 19:32:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 597 proven. 390 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:32:30,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575165928] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:32:30,247 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:32:30,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 40, 40] total 103 [2021-12-06 19:32:30,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494416216] [2021-12-06 19:32:30,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:32:30,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-12-06 19:32:30,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:32:30,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-12-06 19:32:30,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=9889, Unknown=1, NotChecked=0, Total=10506 [2021-12-06 19:32:30,249 INFO L87 Difference]: Start difference. First operand 23462 states and 26549 transitions. Second operand has 103 states, 103 states have (on average 5.883495145631068) internal successors, (606), 103 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:36,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:32:36,827 INFO L93 Difference]: Finished difference Result 27705 states and 31344 transitions. [2021-12-06 19:32:36,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-12-06 19:32:36,828 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 5.883495145631068) internal successors, (606), 103 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-12-06 19:32:36,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:32:36,840 INFO L225 Difference]: With dead ends: 27705 [2021-12-06 19:32:36,840 INFO L226 Difference]: Without dead ends: 19826 [2021-12-06 19:32:36,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 370 SyntacticMatches, 5 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5244 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=1743, Invalid=25978, Unknown=1, NotChecked=0, Total=27722 [2021-12-06 19:32:36,841 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 1030 mSDsluCounter, 6661 mSDsCounter, 0 mSdLazyCounter, 3810 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 6786 SdHoareTripleChecker+Invalid, 4836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 3810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 929 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:32:36,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1030 Valid, 6786 Invalid, 4836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 3810 Invalid, 0 Unknown, 929 Unchecked, 1.3s Time] [2021-12-06 19:32:36,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19826 states. [2021-12-06 19:32:36,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19826 to 14360. [2021-12-06 19:32:36,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14360 states, 14358 states have (on average 1.1307285137205738) internal successors, (16235), 14359 states have internal predecessors, (16235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:36,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14360 states to 14360 states and 16235 transitions. [2021-12-06 19:32:36,995 INFO L78 Accepts]: Start accepts. Automaton has 14360 states and 16235 transitions. Word has length 209 [2021-12-06 19:32:36,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:32:36,996 INFO L470 AbstractCegarLoop]: Abstraction has 14360 states and 16235 transitions. [2021-12-06 19:32:36,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 5.883495145631068) internal successors, (606), 103 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand 14360 states and 16235 transitions. [2021-12-06 19:32:37,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-06 19:32:37,000 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:32:37,001 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:32:37,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-12-06 19:32:37,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:32:37,202 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:32:37,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:32:37,203 INFO L85 PathProgramCache]: Analyzing trace with hash -460296188, now seen corresponding path program 29 times [2021-12-06 19:32:37,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:32:37,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512592836] [2021-12-06 19:32:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:32:37,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:32:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:32:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 561 proven. 1187 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:32:37,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:32:37,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512592836] [2021-12-06 19:32:37,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512592836] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:32:37,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304091458] [2021-12-06 19:32:37,944 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:32:37,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:32:37,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:32:37,945 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:32:37,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-12-06 19:32:38,404 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2021-12-06 19:32:38,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:32:38,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 117 conjunts are in the unsatisfiable core [2021-12-06 19:32:38,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:32:38,425 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:32:38,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:32:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 630 proven. 1118 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:32:40,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:32:42,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 703 proven. 1045 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:32:42,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304091458] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:32:42,368 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:32:42,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 125 [2021-12-06 19:32:42,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215164818] [2021-12-06 19:32:42,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:32:42,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2021-12-06 19:32:42,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:32:42,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2021-12-06 19:32:42,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1897, Invalid=13853, Unknown=0, NotChecked=0, Total=15750 [2021-12-06 19:32:42,370 INFO L87 Difference]: Start difference. First operand 14360 states and 16235 transitions. Second operand has 126 states, 125 states have (on average 4.896) internal successors, (612), 126 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:48,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:32:48,948 INFO L93 Difference]: Finished difference Result 23238 states and 26069 transitions. [2021-12-06 19:32:48,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-12-06 19:32:48,948 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 4.896) internal successors, (612), 126 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-12-06 19:32:48,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:32:48,961 INFO L225 Difference]: With dead ends: 23238 [2021-12-06 19:32:48,961 INFO L226 Difference]: Without dead ends: 23238 [2021-12-06 19:32:48,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 337 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9271 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=6512, Invalid=27160, Unknown=0, NotChecked=0, Total=33672 [2021-12-06 19:32:48,962 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 2317 mSDsluCounter, 7081 mSDsCounter, 0 mSdLazyCounter, 11610 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 7307 SdHoareTripleChecker+Invalid, 11761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 11610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:32:48,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2317 Valid, 7307 Invalid, 11761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 11610 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-06 19:32:48,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23238 states. [2021-12-06 19:32:49,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23238 to 16821. [2021-12-06 19:32:49,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16821 states, 16819 states have (on average 1.135501516142458) internal successors, (19098), 16820 states have internal predecessors, (19098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:49,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16821 states to 16821 states and 19098 transitions. [2021-12-06 19:32:49,135 INFO L78 Accepts]: Start accepts. Automaton has 16821 states and 19098 transitions. Word has length 210 [2021-12-06 19:32:49,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:32:49,136 INFO L470 AbstractCegarLoop]: Abstraction has 16821 states and 19098 transitions. [2021-12-06 19:32:49,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 4.896) internal successors, (612), 126 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:49,136 INFO L276 IsEmpty]: Start isEmpty. Operand 16821 states and 19098 transitions. [2021-12-06 19:32:49,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-06 19:32:49,143 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:32:49,143 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:32:49,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-12-06 19:32:49,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:32:49,344 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:32:49,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:32:49,345 INFO L85 PathProgramCache]: Analyzing trace with hash -377112424, now seen corresponding path program 30 times [2021-12-06 19:32:49,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:32:49,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005479497] [2021-12-06 19:32:49,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:32:49,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:32:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:32:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 77 proven. 1786 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:32:50,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:32:50,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005479497] [2021-12-06 19:32:50,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005479497] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:32:50,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943837826] [2021-12-06 19:32:50,142 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:32:50,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:32:50,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:32:50,143 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:32:50,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-12-06 19:32:51,637 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2021-12-06 19:32:51,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:32:51,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 151 conjunts are in the unsatisfiable core [2021-12-06 19:32:51,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:32:52,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:32:52,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:32:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 77 proven. 1787 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:32:52,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:32:53,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:32:53,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:32:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 77 proven. 1786 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:32:53,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943837826] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:32:53,240 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:32:53,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 51, 48] total 82 [2021-12-06 19:32:53,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650899501] [2021-12-06 19:32:53,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:32:53,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-12-06 19:32:53,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:32:53,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-12-06 19:32:53,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=6411, Unknown=0, NotChecked=0, Total=6642 [2021-12-06 19:32:53,242 INFO L87 Difference]: Start difference. First operand 16821 states and 19098 transitions. Second operand has 82 states, 82 states have (on average 4.097560975609756) internal successors, (336), 82 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:03,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:03,013 INFO L93 Difference]: Finished difference Result 26255 states and 29471 transitions. [2021-12-06 19:33:03,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2021-12-06 19:33:03,014 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 4.097560975609756) internal successors, (336), 82 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2021-12-06 19:33:03,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:03,029 INFO L225 Difference]: With dead ends: 26255 [2021-12-06 19:33:03,029 INFO L226 Difference]: Without dead ends: 23893 [2021-12-06 19:33:03,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 397 SyntacticMatches, 3 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 8863 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1776, Invalid=36836, Unknown=0, NotChecked=0, Total=38612 [2021-12-06 19:33:03,031 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 2958 mSDsluCounter, 21123 mSDsCounter, 0 mSdLazyCounter, 16489 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2958 SdHoareTripleChecker+Valid, 21573 SdHoareTripleChecker+Invalid, 17260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 16489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 370 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:03,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2958 Valid, 21573 Invalid, 17260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 16489 Invalid, 0 Unknown, 370 Unchecked, 4.6s Time] [2021-12-06 19:33:03,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23893 states. [2021-12-06 19:33:03,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23893 to 18321. [2021-12-06 19:33:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18321 states, 18319 states have (on average 1.1363065669523447) internal successors, (20816), 18320 states have internal predecessors, (20816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:03,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18321 states to 18321 states and 20816 transitions. [2021-12-06 19:33:03,193 INFO L78 Accepts]: Start accepts. Automaton has 18321 states and 20816 transitions. Word has length 216 [2021-12-06 19:33:03,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:03,193 INFO L470 AbstractCegarLoop]: Abstraction has 18321 states and 20816 transitions. [2021-12-06 19:33:03,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 4.097560975609756) internal successors, (336), 82 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:03,193 INFO L276 IsEmpty]: Start isEmpty. Operand 18321 states and 20816 transitions. [2021-12-06 19:33:03,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-06 19:33:03,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:03,200 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:03,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2021-12-06 19:33:03,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2021-12-06 19:33:03,401 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:33:03,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:03,402 INFO L85 PathProgramCache]: Analyzing trace with hash 827118874, now seen corresponding path program 22 times [2021-12-06 19:33:03,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:03,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673263261] [2021-12-06 19:33:03,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:03,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 23 proven. 1079 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:04,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:04,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673263261] [2021-12-06 19:33:04,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673263261] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:33:04,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666816324] [2021-12-06 19:33:04,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:33:04,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:04,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:33:04,473 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:33:04,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-12-06 19:33:04,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:33:04,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:33:04,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 113 conjunts are in the unsatisfiable core [2021-12-06 19:33:04,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:33:04,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:33:04,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 19:33:05,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:33:05,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 19:33:09,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:33:10,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:33:10,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:33:10,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 17 [2021-12-06 19:33:10,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 694 proven. 407 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:33:10,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:33:15,060 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:33:15,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 38 [2021-12-06 19:33:15,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:33:15,071 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:33:15,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 75 [2021-12-06 19:33:15,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:33:15,082 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:33:15,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 56 [2021-12-06 19:33:17,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 681 proven. 420 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:33:17,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666816324] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:33:17,820 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:33:17,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 43] total 118 [2021-12-06 19:33:17,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798494979] [2021-12-06 19:33:17,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:33:17,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2021-12-06 19:33:17,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:17,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-12-06 19:33:17,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=985, Invalid=12819, Unknown=2, NotChecked=0, Total=13806 [2021-12-06 19:33:17,822 INFO L87 Difference]: Start difference. First operand 18321 states and 20816 transitions. Second operand has 118 states, 118 states have (on average 5.296610169491525) internal successors, (625), 118 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:34,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:34,621 INFO L93 Difference]: Finished difference Result 41844 states and 47504 transitions. [2021-12-06 19:33:34,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2021-12-06 19:33:34,621 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 5.296610169491525) internal successors, (625), 118 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2021-12-06 19:33:34,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:34,649 INFO L225 Difference]: With dead ends: 41844 [2021-12-06 19:33:34,649 INFO L226 Difference]: Without dead ends: 41650 [2021-12-06 19:33:34,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 372 SyntacticMatches, 34 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20885 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=5795, Invalid=63635, Unknown=2, NotChecked=0, Total=69432 [2021-12-06 19:33:34,652 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 741 mSDsluCounter, 5544 mSDsCounter, 0 mSdLazyCounter, 3066 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 5654 SdHoareTripleChecker+Invalid, 5339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2237 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:34,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 5654 Invalid, 5339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3066 Invalid, 0 Unknown, 2237 Unchecked, 1.1s Time] [2021-12-06 19:33:34,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41650 states. [2021-12-06 19:33:34,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41650 to 35227. [2021-12-06 19:33:34,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35227 states, 35225 states have (on average 1.1343364088005679) internal successors, (39957), 35226 states have internal predecessors, (39957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:35,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35227 states to 35227 states and 39957 transitions. [2021-12-06 19:33:35,057 INFO L78 Accepts]: Start accepts. Automaton has 35227 states and 39957 transitions. Word has length 216 [2021-12-06 19:33:35,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:35,057 INFO L470 AbstractCegarLoop]: Abstraction has 35227 states and 39957 transitions. [2021-12-06 19:33:35,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 5.296610169491525) internal successors, (625), 118 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:35,058 INFO L276 IsEmpty]: Start isEmpty. Operand 35227 states and 39957 transitions. [2021-12-06 19:33:35,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-12-06 19:33:35,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:35,067 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:35,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2021-12-06 19:33:35,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:35,268 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:33:35,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:35,270 INFO L85 PathProgramCache]: Analyzing trace with hash -260081291, now seen corresponding path program 31 times [2021-12-06 19:33:35,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:35,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868866719] [2021-12-06 19:33:35,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:35,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1941 backedges. 630 proven. 1310 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:33:36,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:36,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868866719] [2021-12-06 19:33:36,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868866719] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:33:36,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281788869] [2021-12-06 19:33:36,061 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:33:36,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:36,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:33:36,062 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:33:36,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-12-06 19:33:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:36,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 118 conjunts are in the unsatisfiable core [2021-12-06 19:33:36,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:33:36,256 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:33:36,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:33:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1941 backedges. 703 proven. 1237 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:33:38,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:33:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1941 backedges. 780 proven. 1160 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:33:41,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281788869] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:33:41,469 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:33:41,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 46, 46] total 134 [2021-12-06 19:33:41,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678606417] [2021-12-06 19:33:41,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:33:41,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2021-12-06 19:33:41,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:41,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2021-12-06 19:33:41,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1819, Invalid=16271, Unknown=0, NotChecked=0, Total=18090 [2021-12-06 19:33:41,472 INFO L87 Difference]: Start difference. First operand 35227 states and 39957 transitions. Second operand has 135 states, 134 states have (on average 4.835820895522388) internal successors, (648), 135 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:50,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:50,280 INFO L93 Difference]: Finished difference Result 48339 states and 54338 transitions. [2021-12-06 19:33:50,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-06 19:33:50,281 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 134 states have (on average 4.835820895522388) internal successors, (648), 135 states have internal predecessors, (648), 0 states have call successors, (0), 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 220 [2021-12-06 19:33:50,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:50,313 INFO L225 Difference]: With dead ends: 48339 [2021-12-06 19:33:50,314 INFO L226 Difference]: Without dead ends: 48339 [2021-12-06 19:33:50,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 349 SyntacticMatches, 1 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10242 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=8612, Invalid=37398, Unknown=0, NotChecked=0, Total=46010 [2021-12-06 19:33:50,316 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 2467 mSDsluCounter, 7462 mSDsCounter, 0 mSdLazyCounter, 12017 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2467 SdHoareTripleChecker+Valid, 7691 SdHoareTripleChecker+Invalid, 12179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 12017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:50,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2467 Valid, 7691 Invalid, 12179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 12017 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-06 19:33:50,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48339 states. [2021-12-06 19:33:50,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48339 to 35431. [2021-12-06 19:33:50,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35431 states, 35429 states have (on average 1.1344943407942645) internal successors, (40194), 35430 states have internal predecessors, (40194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:50,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35431 states to 35431 states and 40194 transitions. [2021-12-06 19:33:50,709 INFO L78 Accepts]: Start accepts. Automaton has 35431 states and 40194 transitions. Word has length 220 [2021-12-06 19:33:50,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:50,710 INFO L470 AbstractCegarLoop]: Abstraction has 35431 states and 40194 transitions. [2021-12-06 19:33:50,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 134 states have (on average 4.835820895522388) internal successors, (648), 135 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:50,710 INFO L276 IsEmpty]: Start isEmpty. Operand 35431 states and 40194 transitions. [2021-12-06 19:33:50,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-12-06 19:33:50,721 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:50,722 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:50,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2021-12-06 19:33:50,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:50,922 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:33:50,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:50,923 INFO L85 PathProgramCache]: Analyzing trace with hash -886636233, now seen corresponding path program 23 times [2021-12-06 19:33:50,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:50,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569892269] [2021-12-06 19:33:50,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:50,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:51,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 190 proven. 956 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:33:51,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:51,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569892269] [2021-12-06 19:33:51,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569892269] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:33:51,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032146684] [2021-12-06 19:33:51,314 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:33:51,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:51,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:33:51,315 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:33:51,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-12-06 19:33:51,637 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-12-06 19:33:51,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:33:51,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 79 conjunts are in the unsatisfiable core [2021-12-06 19:33:51,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:33:52,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 231 proven. 915 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:33:52,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:33:53,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-12-06 19:33:53,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 231 proven. 915 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:33:53,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032146684] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:33:53,596 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:33:53,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 70 [2021-12-06 19:33:53,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048892615] [2021-12-06 19:33:53,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:33:53,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-12-06 19:33:53,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:53,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-12-06 19:33:53,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=671, Invalid=4299, Unknown=0, NotChecked=0, Total=4970 [2021-12-06 19:33:53,597 INFO L87 Difference]: Start difference. First operand 35431 states and 40194 transitions. Second operand has 71 states, 70 states have (on average 7.257142857142857) internal successors, (508), 71 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:55,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:55,645 INFO L93 Difference]: Finished difference Result 59320 states and 67481 transitions. [2021-12-06 19:33:55,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-06 19:33:55,646 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 7.257142857142857) internal successors, (508), 71 states have internal predecessors, (508), 0 states have call successors, (0), 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 220 [2021-12-06 19:33:55,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:55,695 INFO L225 Difference]: With dead ends: 59320 [2021-12-06 19:33:55,695 INFO L226 Difference]: Without dead ends: 59320 [2021-12-06 19:33:55,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 396 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2215 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1966, Invalid=7540, Unknown=0, NotChecked=0, Total=9506 [2021-12-06 19:33:55,696 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 1570 mSDsluCounter, 3993 mSDsCounter, 0 mSdLazyCounter, 3972 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 4187 SdHoareTripleChecker+Invalid, 4072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:55,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1570 Valid, 4187 Invalid, 4072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3972 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 19:33:55,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59320 states. [2021-12-06 19:33:56,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59320 to 36604. [2021-12-06 19:33:56,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36604 states, 36602 states have (on average 1.1346101305939567) internal successors, (41529), 36603 states have internal predecessors, (41529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36604 states to 36604 states and 41529 transitions. [2021-12-06 19:33:56,126 INFO L78 Accepts]: Start accepts. Automaton has 36604 states and 41529 transitions. Word has length 220 [2021-12-06 19:33:56,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:56,126 INFO L470 AbstractCegarLoop]: Abstraction has 36604 states and 41529 transitions. [2021-12-06 19:33:56,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 7.257142857142857) internal successors, (508), 71 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:56,126 INFO L276 IsEmpty]: Start isEmpty. Operand 36604 states and 41529 transitions. [2021-12-06 19:33:56,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-12-06 19:33:56,138 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:56,138 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 19, 18, 18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:33:56,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2021-12-06 19:33:56,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:56,340 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:33:56,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:56,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1737024563, now seen corresponding path program 15 times [2021-12-06 19:33:56,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:56,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351843975] [2021-12-06 19:33:56,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:56,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:57,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 77 proven. 1715 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:33:57,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:57,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351843975] [2021-12-06 19:33:57,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351843975] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:33:57,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776173817] [2021-12-06 19:33:57,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:33:57,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:57,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:33:57,071 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:33:57,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-12-06 19:33:58,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2021-12-06 19:33:58,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:33:58,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 133 conjunts are in the unsatisfiable core [2021-12-06 19:33:58,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:33:59,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:33:59,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:33:59,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 77 proven. 1715 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:33:59,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:34:00,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:34:00,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:34:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 77 proven. 1715 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:34:00,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776173817] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:34:00,242 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:34:00,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 76 [2021-12-06 19:34:00,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504120268] [2021-12-06 19:34:00,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:34:00,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-12-06 19:34:00,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:34:00,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-12-06 19:34:00,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=5482, Unknown=0, NotChecked=0, Total=5700 [2021-12-06 19:34:00,244 INFO L87 Difference]: Start difference. First operand 36604 states and 41529 transitions. Second operand has 76 states, 76 states have (on average 4.631578947368421) internal successors, (352), 76 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:34:06,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:34:06,247 INFO L93 Difference]: Finished difference Result 48964 states and 55041 transitions. [2021-12-06 19:34:06,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-12-06 19:34:06,247 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 4.631578947368421) internal successors, (352), 76 states have internal predecessors, (352), 0 states have call successors, (0), 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 223 [2021-12-06 19:34:06,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:34:06,281 INFO L225 Difference]: With dead ends: 48964 [2021-12-06 19:34:06,282 INFO L226 Difference]: Without dead ends: 46033 [2021-12-06 19:34:06,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 414 SyntacticMatches, 3 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 2663 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=826, Invalid=13216, Unknown=0, NotChecked=0, Total=14042 [2021-12-06 19:34:06,282 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 1691 mSDsluCounter, 19261 mSDsCounter, 0 mSdLazyCounter, 14522 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 19690 SdHoareTripleChecker+Invalid, 15016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 14522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 345 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:34:06,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1691 Valid, 19690 Invalid, 15016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 14522 Invalid, 0 Unknown, 345 Unchecked, 4.1s Time] [2021-12-06 19:34:06,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46033 states. [2021-12-06 19:34:06,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46033 to 34425. [2021-12-06 19:34:06,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34425 states, 34423 states have (on average 1.1317723615024837) internal successors, (38959), 34424 states have internal predecessors, (38959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:34:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34425 states to 34425 states and 38959 transitions. [2021-12-06 19:34:06,631 INFO L78 Accepts]: Start accepts. Automaton has 34425 states and 38959 transitions. Word has length 223 [2021-12-06 19:34:06,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:34:06,631 INFO L470 AbstractCegarLoop]: Abstraction has 34425 states and 38959 transitions. [2021-12-06 19:34:06,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 4.631578947368421) internal successors, (352), 76 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:34:06,631 INFO L276 IsEmpty]: Start isEmpty. Operand 34425 states and 38959 transitions. [2021-12-06 19:34:06,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-06 19:34:06,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:34:06,643 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:34:06,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2021-12-06 19:34:06,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:34:06,844 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:34:06,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:34:06,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2011834697, now seen corresponding path program 32 times [2021-12-06 19:34:06,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:34:06,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352457691] [2021-12-06 19:34:06,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:06,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:34:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 81 proven. 1980 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:34:07,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:07,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352457691] [2021-12-06 19:34:07,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352457691] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:34:07,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485079718] [2021-12-06 19:34:07,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:34:07,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:34:07,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:34:07,646 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:34:07,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-12-06 19:34:07,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:34:07,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:34:07,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 127 conjunts are in the unsatisfiable core [2021-12-06 19:34:07,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:34:08,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:34:12,280 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:34:12,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-12-06 19:34:12,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 703 proven. 1358 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:34:12,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:34:15,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:34:15,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:34:15,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-12-06 19:34:15,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 703 proven. 1358 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:34:15,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485079718] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:34:15,526 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:34:15,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 50] total 128 [2021-12-06 19:34:15,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238194410] [2021-12-06 19:34:15,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:34:15,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-12-06 19:34:15,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:34:15,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-12-06 19:34:15,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1040, Invalid=15216, Unknown=0, NotChecked=0, Total=16256 [2021-12-06 19:34:15,528 INFO L87 Difference]: Start difference. First operand 34425 states and 38959 transitions. Second operand has 128 states, 128 states have (on average 4.5390625) internal successors, (581), 128 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:34:24,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:34:24,744 INFO L93 Difference]: Finished difference Result 48677 states and 54842 transitions. [2021-12-06 19:34:24,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-12-06 19:34:24,744 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 4.5390625) internal successors, (581), 128 states have internal predecessors, (581), 0 states have call successors, (0), 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 226 [2021-12-06 19:34:24,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:34:24,772 INFO L225 Difference]: With dead ends: 48677 [2021-12-06 19:34:24,773 INFO L226 Difference]: Without dead ends: 48514 [2021-12-06 19:34:24,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 423 SyntacticMatches, 6 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8417 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1939, Invalid=29567, Unknown=0, NotChecked=0, Total=31506 [2021-12-06 19:34:24,774 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 2823 mSDsluCounter, 17261 mSDsCounter, 0 mSdLazyCounter, 16182 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2823 SdHoareTripleChecker+Valid, 17679 SdHoareTripleChecker+Invalid, 25459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 16182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9159 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:34:24,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2823 Valid, 17679 Invalid, 25459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 16182 Invalid, 0 Unknown, 9159 Unchecked, 5.3s Time] [2021-12-06 19:34:24,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48514 states. [2021-12-06 19:34:25,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48514 to 35978. [2021-12-06 19:34:25,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35978 states, 35976 states have (on average 1.132505003335557) internal successors, (40743), 35977 states have internal predecessors, (40743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:34:25,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35978 states to 35978 states and 40743 transitions. [2021-12-06 19:34:25,146 INFO L78 Accepts]: Start accepts. Automaton has 35978 states and 40743 transitions. Word has length 226 [2021-12-06 19:34:25,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:34:25,147 INFO L470 AbstractCegarLoop]: Abstraction has 35978 states and 40743 transitions. [2021-12-06 19:34:25,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 4.5390625) internal successors, (581), 128 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:34:25,147 INFO L276 IsEmpty]: Start isEmpty. Operand 35978 states and 40743 transitions. [2021-12-06 19:34:25,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-06 19:34:25,159 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:34:25,159 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:34:25,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2021-12-06 19:34:25,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-12-06 19:34:25,360 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:34:25,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:34:25,361 INFO L85 PathProgramCache]: Analyzing trace with hash 92825059, now seen corresponding path program 11 times [2021-12-06 19:34:25,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:34:25,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725718621] [2021-12-06 19:34:25,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:25,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:34:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 199 proven. 968 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 19:34:25,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:25,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725718621] [2021-12-06 19:34:25,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725718621] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:34:25,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077123420] [2021-12-06 19:34:25,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:34:25,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:34:25,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:34:25,864 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:34:25,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-12-06 19:34:26,210 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-12-06 19:34:26,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:34:26,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 118 conjunts are in the unsatisfiable core [2021-12-06 19:34:26,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:34:26,233 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:34:26,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:34:27,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:34:27,150 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:34:27,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2021-12-06 19:34:27,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 3 [2021-12-06 19:34:28,098 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:34:28,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2021-12-06 19:34:30,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 199 proven. 974 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:34:30,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:34:31,022 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:34:31,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 19:34:31,026 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:34:31,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2021-12-06 19:34:31,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:34:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 34 proven. 1144 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:34:33,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077123420] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:34:33,138 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:34:33,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 37, 40] total 93 [2021-12-06 19:34:33,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081079570] [2021-12-06 19:34:33,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:34:33,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-12-06 19:34:33,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:34:33,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-12-06 19:34:33,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=8279, Unknown=0, NotChecked=0, Total=8556 [2021-12-06 19:34:33,140 INFO L87 Difference]: Start difference. First operand 35978 states and 40743 transitions. Second operand has 93 states, 93 states have (on average 5.763440860215054) internal successors, (536), 93 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:34:36,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:34:36,170 INFO L93 Difference]: Finished difference Result 44735 states and 50614 transitions. [2021-12-06 19:34:36,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-06 19:34:36,171 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 5.763440860215054) internal successors, (536), 93 states have internal predecessors, (536), 0 states have call successors, (0), 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 226 [2021-12-06 19:34:36,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:34:36,184 INFO L225 Difference]: With dead ends: 44735 [2021-12-06 19:34:36,185 INFO L226 Difference]: Without dead ends: 22095 [2021-12-06 19:34:36,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 383 SyntacticMatches, 13 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2146 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=520, Invalid=13760, Unknown=0, NotChecked=0, Total=14280 [2021-12-06 19:34:36,185 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 381 mSDsluCounter, 7959 mSDsCounter, 0 mSdLazyCounter, 5088 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 8098 SdHoareTripleChecker+Invalid, 10897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 5088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5792 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:34:36,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 8098 Invalid, 10897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 5088 Invalid, 0 Unknown, 5792 Unchecked, 1.6s Time] [2021-12-06 19:34:36,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22095 states. [2021-12-06 19:34:36,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22095 to 19304. [2021-12-06 19:34:36,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19304 states, 19302 states have (on average 1.1335094808828101) internal successors, (21879), 19303 states have internal predecessors, (21879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:34:36,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19304 states to 19304 states and 21879 transitions. [2021-12-06 19:34:36,351 INFO L78 Accepts]: Start accepts. Automaton has 19304 states and 21879 transitions. Word has length 226 [2021-12-06 19:34:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:34:36,351 INFO L470 AbstractCegarLoop]: Abstraction has 19304 states and 21879 transitions. [2021-12-06 19:34:36,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 5.763440860215054) internal successors, (536), 93 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:34:36,351 INFO L276 IsEmpty]: Start isEmpty. Operand 19304 states and 21879 transitions. [2021-12-06 19:34:36,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-12-06 19:34:36,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:34:36,358 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:34:36,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2021-12-06 19:34:36,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-12-06 19:34:36,559 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:34:36,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:34:36,560 INFO L85 PathProgramCache]: Analyzing trace with hash 767060022, now seen corresponding path program 24 times [2021-12-06 19:34:36,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:34:36,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222468360] [2021-12-06 19:34:36,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:36,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:34:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:37,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 25 proven. 1278 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:34:37,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:37,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222468360] [2021-12-06 19:34:37,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222468360] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:34:37,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020311468] [2021-12-06 19:34:37,362 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:34:37,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:34:37,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:34:37,363 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:34:37,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-12-06 19:34:38,065 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-12-06 19:34:38,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:34:38,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 156 conjunts are in the unsatisfiable core [2021-12-06 19:34:38,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:34:38,088 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:34:38,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:34:38,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:34:38,889 INFO L354 Elim1Store]: treesize reduction 44, result has 18.5 percent of original size [2021-12-06 19:34:38,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-12-06 19:34:43,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:34:43,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:43,500 INFO L354 Elim1Store]: treesize reduction 61, result has 22.8 percent of original size [2021-12-06 19:34:43,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 59 treesize of output 37 [2021-12-06 19:34:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 25 proven. 1278 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:34:43,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:34:47,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:47,638 INFO L354 Elim1Store]: treesize reduction 58, result has 35.6 percent of original size [2021-12-06 19:34:47,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 420 treesize of output 345 [2021-12-06 19:34:47,651 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:34:47,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 269 treesize of output 253 [2021-12-06 19:34:47,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 319 treesize of output 303 [2021-12-06 19:34:47,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:47,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:34:47,763 INFO L354 Elim1Store]: treesize reduction 9, result has 80.0 percent of original size [2021-12-06 19:34:47,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 113 treesize of output 111 [2021-12-06 19:35:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 0 proven. 1303 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:35:03,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020311468] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:35:03,049 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:35:03,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 45, 46] total 129 [2021-12-06 19:35:03,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158847998] [2021-12-06 19:35:03,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:35:03,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2021-12-06 19:35:03,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:35:03,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2021-12-06 19:35:03,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=546, Invalid=15966, Unknown=0, NotChecked=0, Total=16512 [2021-12-06 19:35:03,051 INFO L87 Difference]: Start difference. First operand 19304 states and 21879 transitions. Second operand has 129 states, 129 states have (on average 5.341085271317829) internal successors, (689), 129 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:35:11,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:35:11,690 INFO L93 Difference]: Finished difference Result 32994 states and 37364 transitions. [2021-12-06 19:35:11,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-12-06 19:35:11,691 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 5.341085271317829) internal successors, (689), 129 states have internal predecessors, (689), 0 states have call successors, (0), 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 233 [2021-12-06 19:35:11,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:35:11,714 INFO L225 Difference]: With dead ends: 32994 [2021-12-06 19:35:11,714 INFO L226 Difference]: Without dead ends: 32787 [2021-12-06 19:35:11,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5842 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=1064, Invalid=32976, Unknown=0, NotChecked=0, Total=34040 [2021-12-06 19:35:11,716 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 430 mSDsluCounter, 8413 mSDsCounter, 0 mSdLazyCounter, 6995 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 8548 SdHoareTripleChecker+Invalid, 12664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 6995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5647 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:35:11,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 8548 Invalid, 12664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 6995 Invalid, 0 Unknown, 5647 Unchecked, 3.4s Time] [2021-12-06 19:35:11,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32787 states. [2021-12-06 19:35:11,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32787 to 32647. [2021-12-06 19:35:11,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32647 states, 32645 states have (on average 1.134201255935059) internal successors, (37026), 32646 states have internal predecessors, (37026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:35:11,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32647 states to 32647 states and 37026 transitions. [2021-12-06 19:35:11,991 INFO L78 Accepts]: Start accepts. Automaton has 32647 states and 37026 transitions. Word has length 233 [2021-12-06 19:35:11,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:35:11,991 INFO L470 AbstractCegarLoop]: Abstraction has 32647 states and 37026 transitions. [2021-12-06 19:35:11,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 5.341085271317829) internal successors, (689), 129 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:35:11,992 INFO L276 IsEmpty]: Start isEmpty. Operand 32647 states and 37026 transitions. [2021-12-06 19:35:12,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-12-06 19:35:12,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:35:12,004 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:35:12,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2021-12-06 19:35:12,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-12-06 19:35:12,205 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:35:12,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:35:12,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1998393594, now seen corresponding path program 33 times [2021-12-06 19:35:12,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:35:12,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204589578] [2021-12-06 19:35:12,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:35:12,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:35:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 85 proven. 2184 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:35:13,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:35:13,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204589578] [2021-12-06 19:35:13,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204589578] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:35:13,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089670447] [2021-12-06 19:35:13,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:35:13,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:35:13,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:35:13,098 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:35:13,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-12-06 19:35:16,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2021-12-06 19:35:16,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:35:16,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-06 19:35:16,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:35:16,125 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:35:16,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:35:16,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:35:18,968 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:35:18,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-12-06 19:35:19,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 2143 trivial. 0 not checked. [2021-12-06 19:35:19,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:35:20,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-12-06 19:35:20,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-06 19:35:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 2143 trivial. 0 not checked. [2021-12-06 19:35:21,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089670447] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:35:21,159 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:35:21,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 10, 10] total 71 [2021-12-06 19:35:21,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104688670] [2021-12-06 19:35:21,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:35:21,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-12-06 19:35:21,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:35:21,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-12-06 19:35:21,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=4773, Unknown=0, NotChecked=0, Total=4970 [2021-12-06 19:35:21,161 INFO L87 Difference]: Start difference. First operand 32647 states and 37026 transitions. Second operand has 71 states, 71 states have (on average 4.225352112676056) internal successors, (300), 71 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:35:29,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:35:29,697 INFO L93 Difference]: Finished difference Result 36051 states and 40868 transitions. [2021-12-06 19:35:29,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2021-12-06 19:35:29,698 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.225352112676056) internal successors, (300), 71 states have internal predecessors, (300), 0 states have call successors, (0), 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 236 [2021-12-06 19:35:29,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:35:29,725 INFO L225 Difference]: With dead ends: 36051 [2021-12-06 19:35:29,726 INFO L226 Difference]: Without dead ends: 35646 [2021-12-06 19:35:29,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16883 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1975, Invalid=51617, Unknown=0, NotChecked=0, Total=53592 [2021-12-06 19:35:29,730 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 185 mSDsluCounter, 4103 mSDsCounter, 0 mSdLazyCounter, 6772 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 4184 SdHoareTripleChecker+Invalid, 7319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 6772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 522 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:35:29,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 4184 Invalid, 7319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 6772 Invalid, 0 Unknown, 522 Unchecked, 2.0s Time] [2021-12-06 19:35:29,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35646 states. [2021-12-06 19:35:29,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35646 to 32371. [2021-12-06 19:35:29,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32371 states, 32369 states have (on average 1.133986221384658) internal successors, (36706), 32370 states have internal predecessors, (36706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:35:30,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32371 states to 32371 states and 36706 transitions. [2021-12-06 19:35:30,027 INFO L78 Accepts]: Start accepts. Automaton has 32371 states and 36706 transitions. Word has length 236 [2021-12-06 19:35:30,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:35:30,027 INFO L470 AbstractCegarLoop]: Abstraction has 32371 states and 36706 transitions. [2021-12-06 19:35:30,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.225352112676056) internal successors, (300), 71 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:35:30,027 INFO L276 IsEmpty]: Start isEmpty. Operand 32371 states and 36706 transitions. [2021-12-06 19:35:30,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-12-06 19:35:30,039 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:35:30,040 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:35:30,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2021-12-06 19:35:30,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-12-06 19:35:30,240 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:35:30,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:35:30,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1702733383, now seen corresponding path program 25 times [2021-12-06 19:35:30,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:35:30,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647007734] [2021-12-06 19:35:30,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:35:30,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:35:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:30,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 231 proven. 1121 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:35:30,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:35:30,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647007734] [2021-12-06 19:35:30,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647007734] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:35:30,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061310746] [2021-12-06 19:35:30,675 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:35:30,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:35:30,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:35:30,676 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:35:30,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-12-06 19:35:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:30,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 80 conjunts are in the unsatisfiable core [2021-12-06 19:35:30,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:35:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 276 proven. 1076 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:35:31,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:35:32,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:35:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 276 proven. 1076 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:35:32,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061310746] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:35:32,459 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:35:32,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31, 31] total 63 [2021-12-06 19:35:32,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12594972] [2021-12-06 19:35:32,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:35:32,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-12-06 19:35:32,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:35:32,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-12-06 19:35:32,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=3541, Unknown=0, NotChecked=0, Total=4032 [2021-12-06 19:35:32,460 INFO L87 Difference]: Start difference. First operand 32371 states and 36706 transitions. Second operand has 64 states, 63 states have (on average 7.714285714285714) internal successors, (486), 64 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:35:34,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:35:34,610 INFO L93 Difference]: Finished difference Result 53825 states and 61114 transitions. [2021-12-06 19:35:34,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-06 19:35:34,611 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 7.714285714285714) internal successors, (486), 64 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2021-12-06 19:35:34,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:35:34,655 INFO L225 Difference]: With dead ends: 53825 [2021-12-06 19:35:34,655 INFO L226 Difference]: Without dead ends: 53825 [2021-12-06 19:35:34,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 438 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1618, Invalid=6754, Unknown=0, NotChecked=0, Total=8372 [2021-12-06 19:35:34,656 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1303 mSDsluCounter, 3727 mSDsCounter, 0 mSdLazyCounter, 3790 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 3930 SdHoareTripleChecker+Invalid, 3871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:35:34,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1303 Valid, 3930 Invalid, 3871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3790 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 19:35:34,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53825 states. [2021-12-06 19:35:34,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53825 to 33537. [2021-12-06 19:35:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33537 states, 33535 states have (on average 1.1340688832562993) internal successors, (38031), 33536 states have internal predecessors, (38031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:35:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33537 states to 33537 states and 38031 transitions. [2021-12-06 19:35:35,041 INFO L78 Accepts]: Start accepts. Automaton has 33537 states and 38031 transitions. Word has length 237 [2021-12-06 19:35:35,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:35:35,041 INFO L470 AbstractCegarLoop]: Abstraction has 33537 states and 38031 transitions. [2021-12-06 19:35:35,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 7.714285714285714) internal successors, (486), 64 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:35:35,041 INFO L276 IsEmpty]: Start isEmpty. Operand 33537 states and 38031 transitions. [2021-12-06 19:35:35,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-12-06 19:35:35,054 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:35:35,054 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 21, 20, 20, 20, 20, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:35:35,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2021-12-06 19:35:35,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:35:35,256 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 19:35:35,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:35:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash -170938629, now seen corresponding path program 16 times [2021-12-06 19:35:35,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:35:35,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555538782] [2021-12-06 19:35:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:35:35,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:35:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:36,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2198 backedges. 85 proven. 2105 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:35:36,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:35:36,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555538782] [2021-12-06 19:35:36,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555538782] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:35:36,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061511397] [2021-12-06 19:35:36,028 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:35:36,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:35:36,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:35:36,029 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:35:36,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee40f3d0-9e16-4428-938e-1e7698077623/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-12-06 19:35:36,222 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:35:36,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:35:36,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 106 conjunts are in the unsatisfiable core [2021-12-06 19:35:36,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:35:36,242 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 19:35:36,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 19:35:37,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9