./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0 --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 e978ccdde62c7126e7c77a584896efdc6e7afe04b6752d127d7236cecdea192f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:01:41,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:01:41,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:01:41,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:01:41,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:01:41,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:01:41,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:01:41,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:01:41,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:01:41,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:01:41,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:01:41,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:01:41,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:01:41,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:01:41,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:01:41,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:01:41,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:01:41,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:01:41,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:01:41,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:01:41,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:01:41,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:01:41,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:01:41,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:01:41,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:01:41,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:01:41,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:01:41,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:01:41,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:01:41,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:01:41,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:01:41,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:01:41,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:01:42,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:01:42,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:01:42,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:01:42,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:01:42,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:01:42,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:01:42,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:01:42,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:01:42,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-22 15:01:42,057 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:01:42,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:01:42,058 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:01:42,058 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:01:42,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:01:42,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:01:42,061 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:01:42,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:01:42,061 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:01:42,061 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 15:01:42,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:01:42,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:01:42,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:01:42,064 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-22 15:01:42,064 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-22 15:01:42,064 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-22 15:01:42,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:01:42,065 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 15:01:42,065 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:01:42,065 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:01:42,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:01:42,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:01:42,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:01:42,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:01:42,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:01:42,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:01:42,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:01:42,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:01:42,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:01:42,068 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_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e978ccdde62c7126e7c77a584896efdc6e7afe04b6752d127d7236cecdea192f [2021-11-22 15:01:42,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:01:42,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:01:42,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:01:42,363 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:01:42,364 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:01:42,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/list-ext-properties/list-ext_1.i [2021-11-22 15:01:42,441 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/data/ee70d4727/d87999f926cf4d808f83c195e437fca8/FLAGdd80f3ec5 [2021-11-22 15:01:42,987 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:01:42,988 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/sv-benchmarks/c/list-ext-properties/list-ext_1.i [2021-11-22 15:01:43,009 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/data/ee70d4727/d87999f926cf4d808f83c195e437fca8/FLAGdd80f3ec5 [2021-11-22 15:01:43,284 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/data/ee70d4727/d87999f926cf4d808f83c195e437fca8 [2021-11-22 15:01:43,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:01:43,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:01:43,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:01:43,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:01:43,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:01:43,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:01:43" (1/1) ... [2021-11-22 15:01:43,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bad0aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:43, skipping insertion in model container [2021-11-22 15:01:43,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:01:43" (1/1) ... [2021-11-22 15:01:43,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:01:43,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:01:43,718 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/sv-benchmarks/c/list-ext-properties/list-ext_1.i[23553,23566] [2021-11-22 15:01:43,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:01:43,731 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:01:43,770 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/sv-benchmarks/c/list-ext-properties/list-ext_1.i[23553,23566] [2021-11-22 15:01:43,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:01:43,804 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:01:43,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:43 WrapperNode [2021-11-22 15:01:43,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:01:43,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:01:43,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:01:43,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:01:43,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:43" (1/1) ... [2021-11-22 15:01:43,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:43" (1/1) ... [2021-11-22 15:01:43,864 INFO L137 Inliner]: procedures = 124, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 137 [2021-11-22 15:01:43,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:01:43,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:01:43,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:01:43,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:01:43,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:43" (1/1) ... [2021-11-22 15:01:43,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:43" (1/1) ... [2021-11-22 15:01:43,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:43" (1/1) ... [2021-11-22 15:01:43,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:43" (1/1) ... [2021-11-22 15:01:43,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:43" (1/1) ... [2021-11-22 15:01:43,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:43" (1/1) ... [2021-11-22 15:01:43,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:43" (1/1) ... [2021-11-22 15:01:43,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:01:43,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:01:43,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:01:43,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:01:43,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:43" (1/1) ... [2021-11-22 15:01:43,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:01:43,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:01:43,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:01:43,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:01:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 15:01:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 15:01:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 15:01:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:01:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 15:01:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 15:01:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 15:01:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:01:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:01:43,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:01:44,087 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:01:44,089 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:01:44,538 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:01:44,545 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:01:44,552 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-22 15:01:44,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:01:44 BoogieIcfgContainer [2021-11-22 15:01:44,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:01:44,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:01:44,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:01:44,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:01:44,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:01:43" (1/3) ... [2021-11-22 15:01:44,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776421ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:01:44, skipping insertion in model container [2021-11-22 15:01:44,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:43" (2/3) ... [2021-11-22 15:01:44,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776421ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:01:44, skipping insertion in model container [2021-11-22 15:01:44,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:01:44" (3/3) ... [2021-11-22 15:01:44,574 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_1.i [2021-11-22 15:01:44,583 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:01:44,583 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-11-22 15:01:44,625 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:01:44,632 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 [2021-11-22 15:01:44,632 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-11-22 15:01:44,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 90 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:44,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:01:44,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:44,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:44,657 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:01:44,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:44,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1807801548, now seen corresponding path program 1 times [2021-11-22 15:01:44,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:44,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259998298] [2021-11-22 15:01:44,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:44,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:44,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:44,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:44,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259998298] [2021-11-22 15:01:44,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259998298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:44,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:44,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:01:44,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805671122] [2021-11-22 15:01:44,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:44,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:01:44,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:44,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:01:44,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:01:44,858 INFO L87 Difference]: Start difference. First operand has 91 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 90 states have internal predecessors, (106), 0 states have call successors, (0), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-11-22 15:01:44,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:44,877 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2021-11-22 15:01:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:01:44,879 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2021-11-22 15:01:44,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:44,888 INFO L225 Difference]: With dead ends: 91 [2021-11-22 15:01:44,888 INFO L226 Difference]: Without dead ends: 86 [2021-11-22 15:01:44,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:01:44,894 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:44,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:01:44,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-22 15:01:44,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-11-22 15:01:44,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 48 states have (on average 1.9166666666666667) internal successors, (92), 85 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2021-11-22 15:01:44,934 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 7 [2021-11-22 15:01:44,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:44,935 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2021-11-22 15:01:44,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-11-22 15:01:44,935 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2021-11-22 15:01:44,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 15:01:44,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:44,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:44,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:01:44,937 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:01:44,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:44,938 INFO L85 PathProgramCache]: Analyzing trace with hash 206286314, now seen corresponding path program 1 times [2021-11-22 15:01:44,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:44,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407067446] [2021-11-22 15:01:44,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:44,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:45,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:45,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407067446] [2021-11-22 15:01:45,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407067446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:45,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:45,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:01:45,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083932109] [2021-11-22 15:01:45,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:45,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:01:45,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:45,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:01:45,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:01:45,008 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:45,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:45,228 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2021-11-22 15:01:45,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:01:45,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-11-22 15:01:45,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:45,235 INFO L225 Difference]: With dead ends: 107 [2021-11-22 15:01:45,235 INFO L226 Difference]: Without dead ends: 107 [2021-11-22 15:01:45,242 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 [2021-11-22 15:01:45,244 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 160 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:45,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 52 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:01:45,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-22 15:01:45,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 87. [2021-11-22 15:01:45,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 86 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:45,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2021-11-22 15:01:45,273 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 8 [2021-11-22 15:01:45,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:45,274 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2021-11-22 15:01:45,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:45,275 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2021-11-22 15:01:45,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 15:01:45,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:45,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:45,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:01:45,280 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:01:45,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:45,281 INFO L85 PathProgramCache]: Analyzing trace with hash 206286315, now seen corresponding path program 1 times [2021-11-22 15:01:45,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:45,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527263726] [2021-11-22 15:01:45,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:45,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:45,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:45,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527263726] [2021-11-22 15:01:45,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527263726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:45,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:45,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:01:45,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158916412] [2021-11-22 15:01:45,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:45,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:01:45,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:45,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:01:45,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:01:45,411 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:45,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:45,602 INFO L93 Difference]: Finished difference Result 124 states and 137 transitions. [2021-11-22 15:01:45,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:01:45,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-11-22 15:01:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:45,604 INFO L225 Difference]: With dead ends: 124 [2021-11-22 15:01:45,604 INFO L226 Difference]: Without dead ends: 124 [2021-11-22 15:01:45,605 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 [2021-11-22 15:01:45,606 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 167 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:45,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 60 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:01:45,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-22 15:01:45,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2021-11-22 15:01:45,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 80 states have (on average 1.5125) internal successors, (121), 106 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:45,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2021-11-22 15:01:45,616 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 8 [2021-11-22 15:01:45,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:45,616 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2021-11-22 15:01:45,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:45,616 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2021-11-22 15:01:45,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-22 15:01:45,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:45,618 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:45,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:01:45,618 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:01:45,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:45,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1364928161, now seen corresponding path program 1 times [2021-11-22 15:01:45,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:45,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925753185] [2021-11-22 15:01:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:45,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:45,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:45,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925753185] [2021-11-22 15:01:45,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925753185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:45,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:45,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:01:45,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895551721] [2021-11-22 15:01:45,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:45,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:01:45,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:45,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:01:45,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:01:45,764 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:46,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:46,043 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions. [2021-11-22 15:01:46,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:01:46,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-22 15:01:46,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:46,046 INFO L225 Difference]: With dead ends: 152 [2021-11-22 15:01:46,047 INFO L226 Difference]: Without dead ends: 152 [2021-11-22 15:01:46,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:01:46,058 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 115 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:46,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 240 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:01:46,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-22 15:01:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 111. [2021-11-22 15:01:46,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 110 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) [2021-11-22 15:01:46,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 129 transitions. [2021-11-22 15:01:46,066 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 129 transitions. Word has length 17 [2021-11-22 15:01:46,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:46,066 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 129 transitions. [2021-11-22 15:01:46,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:46,067 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 129 transitions. [2021-11-22 15:01:46,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-22 15:01:46,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:46,068 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:46,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:01:46,068 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:01:46,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:46,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1364928160, now seen corresponding path program 1 times [2021-11-22 15:01:46,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:46,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306056954] [2021-11-22 15:01:46,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:46,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:46,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:46,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306056954] [2021-11-22 15:01:46,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306056954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:46,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:46,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:01:46,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325828612] [2021-11-22 15:01:46,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:46,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:01:46,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:46,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:01:46,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:01:46,241 INFO L87 Difference]: Start difference. First operand 111 states and 129 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:46,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:46,621 INFO L93 Difference]: Finished difference Result 155 states and 176 transitions. [2021-11-22 15:01:46,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:01:46,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-22 15:01:46,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:46,623 INFO L225 Difference]: With dead ends: 155 [2021-11-22 15:01:46,623 INFO L226 Difference]: Without dead ends: 155 [2021-11-22 15:01:46,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:01:46,624 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 79 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:46,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 307 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:01:46,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-22 15:01:46,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 95. [2021-11-22 15:01:46,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 72 states have (on average 1.4861111111111112) internal successors, (107), 94 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:46,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2021-11-22 15:01:46,639 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 17 [2021-11-22 15:01:46,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:46,640 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2021-11-22 15:01:46,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:46,640 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2021-11-22 15:01:46,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-22 15:01:46,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:46,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:46,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:01:46,642 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:01:46,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:46,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1479745928, now seen corresponding path program 1 times [2021-11-22 15:01:46,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:46,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131519747] [2021-11-22 15:01:46,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:46,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:46,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:46,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:46,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131519747] [2021-11-22 15:01:46,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131519747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:46,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:46,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:01:46,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947473181] [2021-11-22 15:01:46,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:46,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:01:46,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:46,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:01:46,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:01:46,796 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:46,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:46,961 INFO L93 Difference]: Finished difference Result 187 states and 204 transitions. [2021-11-22 15:01:46,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:01:46,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-22 15:01:46,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:46,964 INFO L225 Difference]: With dead ends: 187 [2021-11-22 15:01:46,964 INFO L226 Difference]: Without dead ends: 187 [2021-11-22 15:01:46,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:01:46,974 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 163 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:46,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 206 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:01:46,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-22 15:01:46,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 106. [2021-11-22 15:01:46,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 105 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:46,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2021-11-22 15:01:46,995 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 18 [2021-11-22 15:01:46,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:46,995 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2021-11-22 15:01:46,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:46,995 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2021-11-22 15:01:46,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 15:01:46,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:46,996 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] [2021-11-22 15:01:46,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:01:46,997 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:01:46,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:46,998 INFO L85 PathProgramCache]: Analyzing trace with hash 354031242, now seen corresponding path program 1 times [2021-11-22 15:01:46,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:46,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624157126] [2021-11-22 15:01:46,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:46,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:47,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:47,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624157126] [2021-11-22 15:01:47,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624157126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:47,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:47,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:01:47,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463046200] [2021-11-22 15:01:47,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:47,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:01:47,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:47,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:01:47,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:01:47,123 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2021-11-22 15:01:47,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:47,364 INFO L93 Difference]: Finished difference Result 199 states and 216 transitions. [2021-11-22 15:01:47,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:01:47,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 [2021-11-22 15:01:47,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:47,366 INFO L225 Difference]: With dead ends: 199 [2021-11-22 15:01:47,366 INFO L226 Difference]: Without dead ends: 199 [2021-11-22 15:01:47,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:01:47,367 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 119 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:47,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 224 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:01:47,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-22 15:01:47,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 110. [2021-11-22 15:01:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 87 states have (on average 1.4597701149425288) internal successors, (127), 109 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2021-11-22 15:01:47,372 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 20 [2021-11-22 15:01:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:47,372 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2021-11-22 15:01:47,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2021-11-22 15:01:47,373 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2021-11-22 15:01:47,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 15:01:47,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:47,374 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] [2021-11-22 15:01:47,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:01:47,375 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:01:47,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:47,376 INFO L85 PathProgramCache]: Analyzing trace with hash 354083797, now seen corresponding path program 1 times [2021-11-22 15:01:47,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:47,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731223108] [2021-11-22 15:01:47,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:47,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:47,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:47,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731223108] [2021-11-22 15:01:47,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731223108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:47,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:47,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:01:47,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119506721] [2021-11-22 15:01:47,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:47,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:01:47,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:47,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:01:47,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:01:47,442 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2021-11-22 15:01:47,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:47,636 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2021-11-22 15:01:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:01:47,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 [2021-11-22 15:01:47,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:47,638 INFO L225 Difference]: With dead ends: 170 [2021-11-22 15:01:47,638 INFO L226 Difference]: Without dead ends: 170 [2021-11-22 15:01:47,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:01:47,639 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 78 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:47,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 230 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:01:47,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-22 15:01:47,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 110. [2021-11-22 15:01:47,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 87 states have (on average 1.4482758620689655) internal successors, (126), 109 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) [2021-11-22 15:01:47,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2021-11-22 15:01:47,643 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 20 [2021-11-22 15:01:47,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:47,644 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2021-11-22 15:01:47,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2021-11-22 15:01:47,644 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2021-11-22 15:01:47,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 15:01:47,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:47,645 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:47,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:01:47,645 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:01:47,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:47,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1029178319, now seen corresponding path program 1 times [2021-11-22 15:01:47,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:47,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945314048] [2021-11-22 15:01:47,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:47,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:47,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:47,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945314048] [2021-11-22 15:01:47,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945314048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:47,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:47,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:01:47,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439545319] [2021-11-22 15:01:47,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:47,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:01:47,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:47,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:01:47,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:01:47,724 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 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) [2021-11-22 15:01:47,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:47,891 INFO L93 Difference]: Finished difference Result 122 states and 138 transitions. [2021-11-22 15:01:47,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:01:47,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 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 [2021-11-22 15:01:47,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:47,892 INFO L225 Difference]: With dead ends: 122 [2021-11-22 15:01:47,892 INFO L226 Difference]: Without dead ends: 122 [2021-11-22 15:01:47,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:01:47,894 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 108 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:47,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 196 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:01:47,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-22 15:01:47,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108. [2021-11-22 15:01:47,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 87 states have (on average 1.4252873563218391) internal successors, (124), 107 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) [2021-11-22 15:01:47,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2021-11-22 15:01:47,897 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 20 [2021-11-22 15:01:47,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:47,897 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2021-11-22 15:01:47,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 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) [2021-11-22 15:01:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2021-11-22 15:01:47,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 15:01:47,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:47,899 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:47,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:01:47,899 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:01:47,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:47,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1029178320, now seen corresponding path program 1 times [2021-11-22 15:01:47,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:47,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224805738] [2021-11-22 15:01:47,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:47,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:47,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:47,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:47,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224805738] [2021-11-22 15:01:47,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224805738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:47,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:47,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:01:47,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759400632] [2021-11-22 15:01:47,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:47,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:01:47,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:47,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:01:47,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:01:47,974 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 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) [2021-11-22 15:01:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:48,197 INFO L93 Difference]: Finished difference Result 120 states and 136 transitions. [2021-11-22 15:01:48,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:01:48,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 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 [2021-11-22 15:01:48,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:48,199 INFO L225 Difference]: With dead ends: 120 [2021-11-22 15:01:48,199 INFO L226 Difference]: Without dead ends: 120 [2021-11-22 15:01:48,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:01:48,199 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 71 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:48,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 250 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:01:48,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-22 15:01:48,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 93. [2021-11-22 15:01:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 92 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:48,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2021-11-22 15:01:48,203 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 20 [2021-11-22 15:01:48,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:48,203 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2021-11-22 15:01:48,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 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) [2021-11-22 15:01:48,203 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2021-11-22 15:01:48,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 15:01:48,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:48,204 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] [2021-11-22 15:01:48,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:01:48,204 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:01:48,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:48,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1053467632, now seen corresponding path program 1 times [2021-11-22 15:01:48,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:48,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708179121] [2021-11-22 15:01:48,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:48,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:48,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:48,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:48,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708179121] [2021-11-22 15:01:48,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708179121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:48,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:48,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:01:48,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028506135] [2021-11-22 15:01:48,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:48,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:01:48,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:48,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:01:48,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:01:48,247 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:48,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:48,330 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2021-11-22 15:01:48,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:01:48,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-11-22 15:01:48,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:48,332 INFO L225 Difference]: With dead ends: 113 [2021-11-22 15:01:48,332 INFO L226 Difference]: Without dead ends: 113 [2021-11-22 15:01:48,333 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 [2021-11-22 15:01:48,333 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 125 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:48,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 69 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:01:48,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-22 15:01:48,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 95. [2021-11-22 15:01:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 79 states have (on average 1.379746835443038) internal successors, (109), 94 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:48,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2021-11-22 15:01:48,338 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 24 [2021-11-22 15:01:48,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:48,338 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2021-11-22 15:01:48,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:48,339 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2021-11-22 15:01:48,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-22 15:01:48,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:48,340 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] [2021-11-22 15:01:48,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:01:48,340 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:01:48,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:48,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1229881069, now seen corresponding path program 1 times [2021-11-22 15:01:48,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:48,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992583046] [2021-11-22 15:01:48,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:48,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:48,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:48,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992583046] [2021-11-22 15:01:48,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992583046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:48,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:48,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:01:48,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931556515] [2021-11-22 15:01:48,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:48,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:01:48,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:48,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:01:48,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:01:48,419 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 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) [2021-11-22 15:01:48,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:48,576 INFO L93 Difference]: Finished difference Result 128 states and 143 transitions. [2021-11-22 15:01:48,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:01:48,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 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 [2021-11-22 15:01:48,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:48,578 INFO L225 Difference]: With dead ends: 128 [2021-11-22 15:01:48,578 INFO L226 Difference]: Without dead ends: 124 [2021-11-22 15:01:48,579 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 [2021-11-22 15:01:48,579 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 72 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:48,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 163 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:01:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-22 15:01:48,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 98. [2021-11-22 15:01:48,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 82 states have (on average 1.3658536585365855) internal successors, (112), 97 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:48,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2021-11-22 15:01:48,584 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 26 [2021-11-22 15:01:48,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:48,584 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2021-11-22 15:01:48,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 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) [2021-11-22 15:01:48,584 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2021-11-22 15:01:48,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 15:01:48,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:48,587 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:01:48,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:01:48,587 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:01:48,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:48,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1671277061, now seen corresponding path program 1 times [2021-11-22 15:01:48,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:48,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213792991] [2021-11-22 15:01:48,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:48,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:48,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:48,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213792991] [2021-11-22 15:01:48,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213792991] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:01:48,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910578191] [2021-11-22 15:01:48,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:48,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:01:48,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:01:48,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:01:48,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:01:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:48,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-22 15:01:48,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:01:48,979 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 11 treesize of output 7 [2021-11-22 15:01:49,035 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:01:49,035 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 11 treesize of output 11 [2021-11-22 15:01:49,110 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 18 treesize of output 14 [2021-11-22 15:01:49,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:01:49,123 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 27 treesize of output 11 [2021-11-22 15:01:49,172 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 20 treesize of output 8 [2021-11-22 15:01:49,286 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 19 treesize of output 18 [2021-11-22 15:01:49,363 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-22 15:01:49,364 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 25 [2021-11-22 15:01:49,520 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-22 15:01:49,520 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 26 treesize of output 14 [2021-11-22 15:01:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:49,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:01:57,406 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_50| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (not (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_DerPreprocessor_2)))) (store .cse0 |c_ULTIMATE.start_main_~t~0#1.base| (store (store (select .cse0 |c_ULTIMATE.start_main_~t~0#1.base|) |v_ULTIMATE.start_main_~p~0#1.offset_50| 3) (+ |v_ULTIMATE.start_main_~p~0#1.offset_50| 4) v_DerPreprocessor_1))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) is different from false [2021-11-22 15:01:57,517 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 1291 treesize of output 1275 [2021-11-22 15:01:57,547 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-22 15:01:57,547 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 1275 treesize of output 1274 [2021-11-22 15:01:57,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:57,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910578191] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:01:57,828 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:01:57,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 12] total 31 [2021-11-22 15:01:57,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469922410] [2021-11-22 15:01:57,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:01:57,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-22 15:01:57,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:57,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-22 15:01:57,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=711, Unknown=6, NotChecked=56, Total=930 [2021-11-22 15:01:57,831 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:00,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:00,786 INFO L93 Difference]: Finished difference Result 244 states and 271 transitions. [2021-11-22 15:02:00,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-22 15:02:00,787 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-22 15:02:00,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:00,789 INFO L225 Difference]: With dead ends: 244 [2021-11-22 15:02:00,789 INFO L226 Difference]: Without dead ends: 244 [2021-11-22 15:02:00,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=405, Invalid=1570, Unknown=9, NotChecked=86, Total=2070 [2021-11-22 15:02:00,791 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 492 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 463 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:00,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 453 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 311 Invalid, 0 Unknown, 463 Unchecked, 0.3s Time] [2021-11-22 15:02:00,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-22 15:02:00,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 112. [2021-11-22 15:02:00,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 96 states have (on average 1.3333333333333333) internal successors, (128), 111 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:00,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2021-11-22 15:02:00,796 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 27 [2021-11-22 15:02:00,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:00,796 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2021-11-22 15:02:00,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:00,797 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2021-11-22 15:02:00,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 15:02:00,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:00,798 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:02:00,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-22 15:02:01,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-22 15:02:01,018 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:02:01,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:01,018 INFO L85 PathProgramCache]: Analyzing trace with hash 366493373, now seen corresponding path program 1 times [2021-11-22 15:02:01,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:01,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767267743] [2021-11-22 15:02:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:01,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:01,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:01,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:01,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767267743] [2021-11-22 15:02:01,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767267743] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:02:01,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80530583] [2021-11-22 15:02:01,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:01,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:02:01,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:02:01,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:02:01,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:02:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:01,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-22 15:02:01,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:01,442 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 15:02:01,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-22 15:02:01,515 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 23 treesize of output 19 [2021-11-22 15:02:01,750 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-22 15:02:01,750 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 40 treesize of output 20 [2021-11-22 15:02:01,800 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-22 15:02:01,801 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 29 [2021-11-22 15:02:02,003 INFO L354 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-11-22 15:02:02,003 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 33 [2021-11-22 15:02:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:02,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:09,887 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 226 treesize of output 220 [2021-11-22 15:02:11,626 INFO L354 Elim1Store]: treesize reduction 5, result has 93.8 percent of original size [2021-11-22 15:02:11,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 84 treesize of output 149 [2021-11-22 15:02:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:12,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80530583] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:02:12,261 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:02:12,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 34 [2021-11-22 15:02:12,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500083817] [2021-11-22 15:02:12,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:02:12,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-22 15:02:12,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:12,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-22 15:02:12,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1021, Unknown=3, NotChecked=0, Total=1190 [2021-11-22 15:02:12,264 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand has 35 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 35 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) [2021-11-22 15:02:12,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:12,951 INFO L93 Difference]: Finished difference Result 163 states and 188 transitions. [2021-11-22 15:02:12,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-22 15:02:12,952 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 35 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) Word has length 27 [2021-11-22 15:02:12,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:12,953 INFO L225 Difference]: With dead ends: 163 [2021-11-22 15:02:12,953 INFO L226 Difference]: Without dead ends: 163 [2021-11-22 15:02:12,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=273, Invalid=1364, Unknown=3, NotChecked=0, Total=1640 [2021-11-22 15:02:12,955 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 197 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 650 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:12,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 841 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 490 Invalid, 0 Unknown, 650 Unchecked, 0.4s Time] [2021-11-22 15:02:12,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-22 15:02:12,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 132. [2021-11-22 15:02:12,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 116 states have (on average 1.3275862068965518) internal successors, (154), 131 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:12,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2021-11-22 15:02:12,960 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 27 [2021-11-22 15:02:12,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:12,960 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2021-11-22 15:02:12,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 35 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) [2021-11-22 15:02:12,960 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2021-11-22 15:02:12,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 15:02:12,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:12,961 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:02:12,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-22 15:02:13,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-22 15:02:13,178 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:02:13,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:13,178 INFO L85 PathProgramCache]: Analyzing trace with hash 366493374, now seen corresponding path program 1 times [2021-11-22 15:02:13,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:13,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698531523] [2021-11-22 15:02:13,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:13,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:13,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:13,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698531523] [2021-11-22 15:02:13,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698531523] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:02:13,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282931258] [2021-11-22 15:02:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:13,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:02:13,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:02:13,530 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:02:13,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:02:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:13,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-22 15:02:13,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:13,692 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 15:02:13,713 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:02:13,713 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 11 treesize of output 11 [2021-11-22 15:02:13,756 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 23 treesize of output 19 [2021-11-22 15:02:13,773 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 [2021-11-22 15:02:13,975 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-22 15:02:13,975 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 40 treesize of output 20 [2021-11-22 15:02:13,985 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 23 treesize of output 11 [2021-11-22 15:02:14,030 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-22 15:02:14,030 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-11-22 15:02:14,049 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-22 15:02:14,050 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 59 treesize of output 54 [2021-11-22 15:02:14,273 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-22 15:02:14,273 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 42 [2021-11-22 15:02:14,279 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-22 15:02:14,279 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 19 [2021-11-22 15:02:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:14,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:20,480 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_5 Int) (|ULTIMATE.start_main_~p~0#1.offset| Int)) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem8#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem8#1.base|) |ULTIMATE.start_main_~p~0#1.offset| v_DerPreprocessor_5) (+ |ULTIMATE.start_main_~p~0#1.offset| 4) 0)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (forall ((v_DerPreprocessor_5 Int) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_DerPreprocessor_4 Int)) (let ((.cse0 (+ |ULTIMATE.start_main_~p~0#1.offset| 4)) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem8#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem8#1.base|) |ULTIMATE.start_main_~p~0#1.offset| v_DerPreprocessor_5) .cse0 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem8#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem8#1.base|) |ULTIMATE.start_main_~p~0#1.offset| v_DerPreprocessor_4) .cse0 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)))))) is different from false [2021-11-22 15:02:30,386 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 754 treesize of output 730 [2021-11-22 15:02:30,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:02:30,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:02:30,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:02:30,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:02:30,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:02:30,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:02:30,919 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-22 15:02:30,920 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 24 treesize of output 23 [2021-11-22 15:02:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:31,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282931258] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:02:31,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:02:31,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 30 [2021-11-22 15:02:31,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268953202] [2021-11-22 15:02:31,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:02:31,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-22 15:02:31,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:31,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-22 15:02:31,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=741, Unknown=2, NotChecked=56, Total=930 [2021-11-22 15:02:31,022 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand has 31 states, 30 states have (on average 2.4) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:33,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:33,241 INFO L93 Difference]: Finished difference Result 208 states and 235 transitions. [2021-11-22 15:02:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 15:02:33,242 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.4) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-22 15:02:33,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:33,244 INFO L225 Difference]: With dead ends: 208 [2021-11-22 15:02:33,244 INFO L226 Difference]: Without dead ends: 208 [2021-11-22 15:02:33,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=301, Invalid=1341, Unknown=2, NotChecked=78, Total=1722 [2021-11-22 15:02:33,246 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 445 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 401 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:33,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 686 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 670 Invalid, 0 Unknown, 401 Unchecked, 0.6s Time] [2021-11-22 15:02:33,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-22 15:02:33,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 129. [2021-11-22 15:02:33,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 114 states have (on average 1.3070175438596492) internal successors, (149), 128 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:33,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2021-11-22 15:02:33,251 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 27 [2021-11-22 15:02:33,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:33,252 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2021-11-22 15:02:33,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.4) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:33,252 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2021-11-22 15:02:33,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-22 15:02:33,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:33,253 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] [2021-11-22 15:02:33,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:02:33,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-22 15:02:33,482 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:02:33,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:33,482 INFO L85 PathProgramCache]: Analyzing trace with hash 562097958, now seen corresponding path program 1 times [2021-11-22 15:02:33,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:33,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301125755] [2021-11-22 15:02:33,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:33,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:33,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:33,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:33,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301125755] [2021-11-22 15:02:33,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301125755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:33,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:33,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:02:33,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635421218] [2021-11-22 15:02:33,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:33,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:02:33,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:33,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:02:33,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:02:33,623 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:33,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:33,839 INFO L93 Difference]: Finished difference Result 146 states and 166 transitions. [2021-11-22 15:02:33,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:02:33,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-22 15:02:33,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:33,840 INFO L225 Difference]: With dead ends: 146 [2021-11-22 15:02:33,841 INFO L226 Difference]: Without dead ends: 134 [2021-11-22 15:02:33,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:02:33,842 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 175 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:33,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 167 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:02:33,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-22 15:02:33,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 117. [2021-11-22 15:02:33,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 102 states have (on average 1.3333333333333333) internal successors, (136), 116 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:33,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 136 transitions. [2021-11-22 15:02:33,853 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 136 transitions. Word has length 28 [2021-11-22 15:02:33,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:33,854 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 136 transitions. [2021-11-22 15:02:33,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:33,854 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 136 transitions. [2021-11-22 15:02:33,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-22 15:02:33,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:33,855 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:02:33,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:02:33,871 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:02:33,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:33,872 INFO L85 PathProgramCache]: Analyzing trace with hash -268143673, now seen corresponding path program 1 times [2021-11-22 15:02:33,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:33,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539639790] [2021-11-22 15:02:33,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:33,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:34,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:34,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:34,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539639790] [2021-11-22 15:02:34,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539639790] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:02:34,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948729432] [2021-11-22 15:02:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:34,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:02:34,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:02:34,025 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:02:34,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 15:02:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:34,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-22 15:02:34,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:34,174 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 15:02:34,222 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:02:34,223 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 11 treesize of output 11 [2021-11-22 15:02:34,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:02:34,282 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 27 treesize of output 11 [2021-11-22 15:02:34,289 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 18 treesize of output 14 [2021-11-22 15:02:34,332 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 20 treesize of output 8 [2021-11-22 15:02:34,401 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 19 treesize of output 18 [2021-11-22 15:02:34,464 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-22 15:02:34,464 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 25 [2021-11-22 15:02:34,594 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-22 15:02:34,595 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 26 treesize of output 14 [2021-11-22 15:02:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:34,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:42,683 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_6 Int) (|v_ULTIMATE.start_main_~p~0#1.offset_68| Int)) (= 2 (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)))) (store |c_#memory_int| .cse0 (store (store (select |c_#memory_int| .cse0) |v_ULTIMATE.start_main_~p~0#1.offset_68| 3) (+ |v_ULTIMATE.start_main_~p~0#1.offset_68| 4) v_DerPreprocessor_6))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2021-11-22 15:02:45,044 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 37866 treesize of output 37354 [2021-11-22 15:02:46,652 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-22 15:02:46,653 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 36394 treesize of output 36393 [2021-11-22 15:02:46,969 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 15:02:46,969 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:02:46,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-22 15:02:46,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385612906] [2021-11-22 15:02:46,970 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-22 15:02:46,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 15:02:46,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:46,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 15:02:46,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=523, Unknown=12, NotChecked=48, Total=702 [2021-11-22 15:02:46,971 INFO L87 Difference]: Start difference. First operand 117 states and 136 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:47,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:47,411 INFO L93 Difference]: Finished difference Result 195 states and 218 transitions. [2021-11-22 15:02:47,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 15:02:47,411 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-11-22 15:02:47,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:47,413 INFO L225 Difference]: With dead ends: 195 [2021-11-22 15:02:47,413 INFO L226 Difference]: Without dead ends: 195 [2021-11-22 15:02:47,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=204, Invalid=844, Unknown=12, NotChecked=62, Total=1122 [2021-11-22 15:02:47,414 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 109 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:47,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 327 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:02:47,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-22 15:02:47,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 119. [2021-11-22 15:02:47,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 104 states have (on average 1.3269230769230769) internal successors, (138), 118 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:47,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2021-11-22 15:02:47,420 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 29 [2021-11-22 15:02:47,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:47,420 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2021-11-22 15:02:47,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:47,421 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2021-11-22 15:02:47,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-22 15:02:47,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:47,422 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:02:47,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:02:47,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-22 15:02:47,622 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:02:47,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:47,623 INFO L85 PathProgramCache]: Analyzing trace with hash -268091118, now seen corresponding path program 1 times [2021-11-22 15:02:47,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:47,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649358015] [2021-11-22 15:02:47,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:47,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:47,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:47,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649358015] [2021-11-22 15:02:47,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649358015] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:02:47,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704313905] [2021-11-22 15:02:47,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:47,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:02:47,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:02:47,831 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:02:47,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 15:02:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:47,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-22 15:02:47,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:47,992 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 15:02:47,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-22 15:02:48,058 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 23 treesize of output 19 [2021-11-22 15:02:48,196 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-22 15:02:48,197 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 40 treesize of output 20 [2021-11-22 15:02:48,235 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-22 15:02:48,236 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 29 [2021-11-22 15:02:48,402 INFO L354 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-11-22 15:02:48,402 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 33 [2021-11-22 15:02:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:48,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:55,093 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 456 treesize of output 444 [2021-11-22 15:02:57,728 INFO L354 Elim1Store]: treesize reduction 5, result has 93.8 percent of original size [2021-11-22 15:02:57,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 84 treesize of output 149 [2021-11-22 15:02:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:58,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704313905] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:02:58,763 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:02:58,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 34 [2021-11-22 15:02:58,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510565999] [2021-11-22 15:02:58,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:02:58,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-22 15:02:58,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:58,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-22 15:02:58,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1023, Unknown=2, NotChecked=0, Total=1190 [2021-11-22 15:02:58,766 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand has 35 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 35 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:59,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:59,155 INFO L93 Difference]: Finished difference Result 135 states and 157 transitions. [2021-11-22 15:02:59,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:02:59,155 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 35 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-22 15:02:59,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:59,156 INFO L225 Difference]: With dead ends: 135 [2021-11-22 15:02:59,156 INFO L226 Difference]: Without dead ends: 135 [2021-11-22 15:02:59,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=240, Invalid=1240, Unknown=2, NotChecked=0, Total=1482 [2021-11-22 15:02:59,158 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 118 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 304 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:59,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 707 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 387 Invalid, 0 Unknown, 304 Unchecked, 0.3s Time] [2021-11-22 15:02:59,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-22 15:02:59,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2021-11-22 15:02:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 107 states have (on average 1.3271028037383177) internal successors, (142), 121 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2021-11-22 15:02:59,162 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 29 [2021-11-22 15:02:59,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:59,163 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2021-11-22 15:02:59,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 35 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:59,163 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2021-11-22 15:02:59,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-22 15:02:59,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:59,164 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:02:59,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-22 15:02:59,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-22 15:02:59,365 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:02:59,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:59,365 INFO L85 PathProgramCache]: Analyzing trace with hash -268091117, now seen corresponding path program 1 times [2021-11-22 15:02:59,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:59,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525458948] [2021-11-22 15:02:59,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:59,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:59,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:59,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:59,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525458948] [2021-11-22 15:02:59,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525458948] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:02:59,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180702223] [2021-11-22 15:02:59,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:59,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:02:59,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:02:59,653 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:02:59,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 15:02:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:59,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-22 15:02:59,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:59,831 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:02:59,832 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 11 treesize of output 11 [2021-11-22 15:02:59,837 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 6 treesize of output 5 [2021-11-22 15:02:59,875 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 [2021-11-22 15:02:59,880 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 23 treesize of output 19 [2021-11-22 15:03:00,012 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-22 15:03:00,013 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 23 treesize of output 19 [2021-11-22 15:03:00,045 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-22 15:03:00,045 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 40 treesize of output 20 [2021-11-22 15:03:00,090 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-22 15:03:00,091 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-11-22 15:03:00,103 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-22 15:03:00,103 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 59 treesize of output 54 [2021-11-22 15:03:00,284 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-22 15:03:00,285 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 42 [2021-11-22 15:03:00,290 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-22 15:03:00,290 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 19 [2021-11-22 15:03:00,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:03:00,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:03:11,604 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_9 Int) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_DerPreprocessor_10 Int)) (let ((.cse0 (+ |ULTIMATE.start_main_~p~0#1.offset| 4)) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem13#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem13#1.base|) |ULTIMATE.start_main_~p~0#1.offset| v_DerPreprocessor_10) .cse0 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem13#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem13#1.base|) |ULTIMATE.start_main_~p~0#1.offset| v_DerPreprocessor_9) .cse0 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))))) (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_DerPreprocessor_10 Int)) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem13#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem13#1.base|) |ULTIMATE.start_main_~p~0#1.offset| v_DerPreprocessor_10) (+ |ULTIMATE.start_main_~p~0#1.offset| 4) 0)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) is different from false [2021-11-22 15:03:28,519 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 718 treesize of output 694 [2021-11-22 15:03:29,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:03:29,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:03:29,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:03:29,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:03:29,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:03:29,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:03:29,257 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-22 15:03:29,258 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 24 treesize of output 23 [2021-11-22 15:03:31,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:03:31,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180702223] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:03:31,359 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:03:31,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 30 [2021-11-22 15:03:31,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199208644] [2021-11-22 15:03:31,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:03:31,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-22 15:03:31,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:03:31,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-22 15:03:31,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=739, Unknown=4, NotChecked=56, Total=930 [2021-11-22 15:03:31,362 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand has 31 states, 30 states have (on average 2.6) internal successors, (78), 31 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) [2021-11-22 15:03:33,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:03:33,813 INFO L93 Difference]: Finished difference Result 138 states and 158 transitions. [2021-11-22 15:03:33,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 15:03:33,814 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.6) internal successors, (78), 31 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 29 [2021-11-22 15:03:33,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:03:33,815 INFO L225 Difference]: With dead ends: 138 [2021-11-22 15:03:33,815 INFO L226 Difference]: Without dead ends: 138 [2021-11-22 15:03:33,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 32.4s TimeCoverageRelationStatistics Valid=251, Invalid=1155, Unknown=4, NotChecked=72, Total=1482 [2021-11-22 15:03:33,816 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 167 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 252 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:03:33,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 603 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 577 Invalid, 0 Unknown, 252 Unchecked, 0.5s Time] [2021-11-22 15:03:33,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-22 15:03:33,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 121. [2021-11-22 15:03:33,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 106 states have (on average 1.320754716981132) internal successors, (140), 120 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:33,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 140 transitions. [2021-11-22 15:03:33,821 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 140 transitions. Word has length 29 [2021-11-22 15:03:33,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:03:33,821 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 140 transitions. [2021-11-22 15:03:33,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.6) internal successors, (78), 31 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) [2021-11-22 15:03:33,822 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 140 transitions. [2021-11-22 15:03:33,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-22 15:03:33,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:03:33,823 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:03:33,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:03:34,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:03:34,033 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:03:34,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:03:34,033 INFO L85 PathProgramCache]: Analyzing trace with hash -34817409, now seen corresponding path program 1 times [2021-11-22 15:03:34,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:03:34,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980474076] [2021-11-22 15:03:34,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:03:34,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:03:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:03:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:03:34,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:03:34,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980474076] [2021-11-22 15:03:34,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980474076] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:03:34,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3576147] [2021-11-22 15:03:34,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:03:34,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:03:34,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:03:34,231 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:03:34,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 15:03:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:03:34,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-22 15:03:34,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:03:34,360 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 11 treesize of output 7 [2021-11-22 15:03:34,406 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:03:34,407 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 11 treesize of output 11 [2021-11-22 15:03:34,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:03:34,467 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 27 treesize of output 11 [2021-11-22 15:03:34,473 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 18 treesize of output 14 [2021-11-22 15:03:34,505 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 20 treesize of output 8 [2021-11-22 15:03:34,587 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 19 treesize of output 18 [2021-11-22 15:03:34,633 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-22 15:03:34,634 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 25 [2021-11-22 15:03:34,722 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-22 15:03:34,722 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 26 treesize of output 14 [2021-11-22 15:03:34,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:03:34,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:03:44,997 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_11 Int) (|v_ULTIMATE.start_main_~p~0#1.offset_85| Int)) (= 1 (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)))) (store |c_#memory_int| .cse0 (store (store (select |c_#memory_int| .cse0) |v_ULTIMATE.start_main_~p~0#1.offset_85| 3) (+ |v_ULTIMATE.start_main_~p~0#1.offset_85| 4) v_DerPreprocessor_11))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2021-11-22 15:03:51,432 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 624 treesize of output 616 [2021-11-22 15:03:51,465 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-22 15:03:51,465 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 598 treesize of output 597 [2021-11-22 15:03:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:03:52,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3576147] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:03:52,498 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:03:52,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 12] total 28 [2021-11-22 15:03:52,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247334106] [2021-11-22 15:03:52,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:03:52,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-22 15:03:52,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:03:52,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-22 15:03:52,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=564, Unknown=13, NotChecked=50, Total=756 [2021-11-22 15:03:52,501 INFO L87 Difference]: Start difference. First operand 121 states and 140 transitions. Second operand has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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) [2021-11-22 15:03:52,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:03:52,620 INFO L93 Difference]: Finished difference Result 123 states and 141 transitions. [2021-11-22 15:03:52,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 15:03:52,621 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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) Word has length 29 [2021-11-22 15:03:52,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:03:52,622 INFO L225 Difference]: With dead ends: 123 [2021-11-22 15:03:52,622 INFO L226 Difference]: Without dead ends: 123 [2021-11-22 15:03:52,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=146, Invalid=601, Unknown=13, NotChecked=52, Total=812 [2021-11-22 15:03:52,624 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 59 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 322 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:03:52,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 496 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 322 Unchecked, 0.1s Time] [2021-11-22 15:03:52,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-22 15:03:52,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2021-11-22 15:03:52,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 106 states have (on average 1.3113207547169812) internal successors, (139), 120 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) [2021-11-22 15:03:52,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2021-11-22 15:03:52,629 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 29 [2021-11-22 15:03:52,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:03:52,630 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2021-11-22 15:03:52,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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) [2021-11-22 15:03:52,630 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2021-11-22 15:03:52,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-22 15:03:52,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:03:52,631 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:03:52,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 15:03:52,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:03:52,854 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:03:52,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:03:52,854 INFO L85 PathProgramCache]: Analyzing trace with hash 62476244, now seen corresponding path program 1 times [2021-11-22 15:03:52,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:03:52,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189237466] [2021-11-22 15:03:52,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:03:52,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:03:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:03:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:03:53,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:03:53,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189237466] [2021-11-22 15:03:53,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189237466] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:03:53,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275911011] [2021-11-22 15:03:53,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:03:53,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:03:53,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:03:53,206 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:03:53,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 15:03:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:03:53,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-22 15:03:53,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:03:53,412 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 15:03:53,423 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:03:53,423 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 11 treesize of output 11 [2021-11-22 15:03:53,483 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 23 treesize of output 19 [2021-11-22 15:03:53,495 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 17 treesize of output 13 [2021-11-22 15:03:53,662 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-22 15:03:53,663 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 23 treesize of output 19 [2021-11-22 15:03:53,704 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-22 15:03:53,704 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 40 treesize of output 20 [2021-11-22 15:03:53,757 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-22 15:03:53,758 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-11-22 15:03:53,770 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-22 15:03:53,770 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 59 treesize of output 54 [2021-11-22 15:03:54,012 INFO L354 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-11-22 15:03:54,012 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 53 [2021-11-22 15:03:54,027 INFO L354 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-11-22 15:03:54,027 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 41 treesize of output 28 [2021-11-22 15:03:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:03:54,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:04:04,313 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 1363 treesize of output 1339 [2021-11-22 15:04:04,335 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 7937 treesize of output 7745 [2021-11-22 15:04:04,408 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 15:04:04,408 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:04:04,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-22 15:04:04,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075877399] [2021-11-22 15:04:04,408 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-22 15:04:04,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 15:04:04,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:04,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 15:04:04,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1035, Unknown=3, NotChecked=0, Total=1190 [2021-11-22 15:04:04,410 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:05,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:05,173 INFO L93 Difference]: Finished difference Result 203 states and 226 transitions. [2021-11-22 15:04:05,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:04:05,174 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-22 15:04:05,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:05,175 INFO L225 Difference]: With dead ends: 203 [2021-11-22 15:04:05,175 INFO L226 Difference]: Without dead ends: 203 [2021-11-22 15:04:05,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=265, Invalid=1538, Unknown=3, NotChecked=0, Total=1806 [2021-11-22 15:04:05,177 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 299 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:05,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 395 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:04:05,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-22 15:04:05,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 121. [2021-11-22 15:04:05,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 106 states have (on average 1.3113207547169812) internal successors, (139), 120 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) [2021-11-22 15:04:05,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2021-11-22 15:04:05,182 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 31 [2021-11-22 15:04:05,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:05,183 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2021-11-22 15:04:05,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:05,183 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2021-11-22 15:04:05,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-22 15:04:05,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:05,184 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] [2021-11-22 15:04:05,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-22 15:04:05,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-22 15:04:05,398 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:04:05,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:05,398 INFO L85 PathProgramCache]: Analyzing trace with hash -569217421, now seen corresponding path program 2 times [2021-11-22 15:04:05,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:05,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293907484] [2021-11-22 15:04:05,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:05,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:05,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:05,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293907484] [2021-11-22 15:04:05,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293907484] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:04:05,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082482042] [2021-11-22 15:04:05,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:04:05,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:04:05,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:04:05,721 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:04:05,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 15:04:05,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:04:05,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:04:05,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-22 15:04:05,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:04:05,902 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 15:04:05,914 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:04:05,914 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 11 treesize of output 11 [2021-11-22 15:04:05,981 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 23 treesize of output 19 [2021-11-22 15:04:05,989 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 [2021-11-22 15:04:06,256 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 11 treesize of output 7 [2021-11-22 15:04:06,269 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-22 15:04:06,270 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 40 treesize of output 20 [2021-11-22 15:04:06,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:04:06,281 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 23 treesize of output 11 [2021-11-22 15:04:06,355 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-22 15:04:06,355 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 95 [2021-11-22 15:04:06,366 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-22 15:04:06,367 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 99 [2021-11-22 15:04:06,381 INFO L354 Elim1Store]: treesize reduction 59, result has 20.3 percent of original size [2021-11-22 15:04:06,381 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 113 treesize of output 77 [2021-11-22 15:04:06,541 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-22 15:04:06,542 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 57 [2021-11-22 15:04:06,547 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-22 15:04:06,548 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 31 [2021-11-22 15:04:06,610 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 7 [2021-11-22 15:04:06,640 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:06,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:04:06,919 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 697 treesize of output 619 [2021-11-22 15:04:07,776 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 793 treesize of output 781 [2021-11-22 15:04:07,807 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 8790 treesize of output 8574 [2021-11-22 15:04:07,941 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 15:04:07,941 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:04:07,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-22 15:04:07,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730302715] [2021-11-22 15:04:07,942 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-22 15:04:07,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 15:04:07,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:07,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 15:04:07,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1180, Unknown=0, NotChecked=0, Total=1332 [2021-11-22 15:04:07,944 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:08,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:08,969 INFO L93 Difference]: Finished difference Result 202 states and 222 transitions. [2021-11-22 15:04:08,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 15:04:08,972 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-22 15:04:08,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:08,974 INFO L225 Difference]: With dead ends: 202 [2021-11-22 15:04:08,974 INFO L226 Difference]: Without dead ends: 202 [2021-11-22 15:04:08,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=300, Invalid=2052, Unknown=0, NotChecked=0, Total=2352 [2021-11-22 15:04:08,975 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 239 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:08,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 599 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 15:04:08,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-22 15:04:08,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 123. [2021-11-22 15:04:08,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 108 states have (on average 1.3055555555555556) internal successors, (141), 122 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:08,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2021-11-22 15:04:08,981 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 31 [2021-11-22 15:04:08,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:08,981 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2021-11-22 15:04:08,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:08,982 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2021-11-22 15:04:08,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-22 15:04:08,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:08,983 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:09,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-22 15:04:09,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-22 15:04:09,198 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:04:09,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:09,198 INFO L85 PathProgramCache]: Analyzing trace with hash -89922179, now seen corresponding path program 1 times [2021-11-22 15:04:09,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:09,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187335202] [2021-11-22 15:04:09,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:09,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:09,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:09,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187335202] [2021-11-22 15:04:09,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187335202] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:04:09,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664870084] [2021-11-22 15:04:09,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:09,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:04:09,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:04:09,630 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:04:09,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-22 15:04:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:09,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-22 15:04:09,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:04:09,851 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:04:09,852 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 11 treesize of output 11 [2021-11-22 15:04:09,922 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 18 treesize of output 14 [2021-11-22 15:04:09,928 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 17 treesize of output 13 [2021-11-22 15:04:10,147 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 11 treesize of output 7 [2021-11-22 15:04:10,165 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-22 15:04:10,166 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 30 treesize of output 14 [2021-11-22 15:04:10,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:04:10,175 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 31 treesize of output 15 [2021-11-22 15:04:10,244 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-22 15:04:10,244 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 97 [2021-11-22 15:04:10,254 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-22 15:04:10,255 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 93 [2021-11-22 15:04:10,265 INFO L354 Elim1Store]: treesize reduction 59, result has 20.3 percent of original size [2021-11-22 15:04:10,265 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 111 treesize of output 75 [2021-11-22 15:04:10,636 INFO L354 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2021-11-22 15:04:10,636 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 70 [2021-11-22 15:04:10,650 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-11-22 15:04:10,650 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 38 [2021-11-22 15:04:10,774 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 21 treesize of output 13 [2021-11-22 15:04:10,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:10,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:04:15,329 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 746 treesize of output 668 [2021-11-22 15:04:16,929 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 1399 treesize of output 1363 [2021-11-22 15:04:16,973 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 3167 treesize of output 3107 [2021-11-22 15:04:17,065 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 15:04:17,066 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:04:17,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-11-22 15:04:17,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027300556] [2021-11-22 15:04:17,066 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-22 15:04:17,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 15:04:17,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:17,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 15:04:17,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1472, Unknown=2, NotChecked=0, Total=1640 [2021-11-22 15:04:17,069 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:18,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:18,387 INFO L93 Difference]: Finished difference Result 205 states and 225 transitions. [2021-11-22 15:04:18,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 15:04:18,387 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-22 15:04:18,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:18,389 INFO L225 Difference]: With dead ends: 205 [2021-11-22 15:04:18,389 INFO L226 Difference]: Without dead ends: 205 [2021-11-22 15:04:18,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=357, Invalid=2611, Unknown=2, NotChecked=0, Total=2970 [2021-11-22 15:04:18,391 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 240 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:18,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 443 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 15:04:18,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-22 15:04:18,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 127. [2021-11-22 15:04:18,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 112 states have (on average 1.3035714285714286) internal successors, (146), 126 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:18,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2021-11-22 15:04:18,398 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 33 [2021-11-22 15:04:18,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:18,398 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2021-11-22 15:04:18,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:18,399 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2021-11-22 15:04:18,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-22 15:04:18,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:18,400 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] [2021-11-22 15:04:18,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-22 15:04:18,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-22 15:04:18,618 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:04:18,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:18,618 INFO L85 PathProgramCache]: Analyzing trace with hash -89869624, now seen corresponding path program 2 times [2021-11-22 15:04:18,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:18,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855484072] [2021-11-22 15:04:18,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:18,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:18,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:18,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855484072] [2021-11-22 15:04:18,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855484072] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:04:18,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57150349] [2021-11-22 15:04:18,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:04:18,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:04:18,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:04:18,966 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:04:18,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-22 15:04:19,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:04:19,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:04:19,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-22 15:04:19,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:04:19,186 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 15:04:19,198 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:04:19,199 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 11 treesize of output 11 [2021-11-22 15:04:19,251 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 23 treesize of output 19 [2021-11-22 15:04:19,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 15:04:19,462 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-22 15:04:19,463 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 40 treesize of output 20 [2021-11-22 15:04:19,537 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-22 15:04:19,537 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 65 [2021-11-22 15:04:19,548 INFO L354 Elim1Store]: treesize reduction 35, result has 23.9 percent of original size [2021-11-22 15:04:19,548 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 87 treesize of output 59 [2021-11-22 15:04:19,810 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-22 15:04:19,810 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 36 [2021-11-22 15:04:19,906 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:04:19,906 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 25 treesize of output 25 [2021-11-22 15:04:20,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:20,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:04:20,435 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 454 treesize of output 408 [2021-11-22 15:04:21,401 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 1139 treesize of output 1109 [2021-11-22 15:04:40,048 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:04:40,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 175 treesize of output 283 [2021-11-22 15:04:47,093 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-22 15:04:47,094 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 75 treesize of output 74 [2021-11-22 15:04:47,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:47,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57150349] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:04:47,245 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:04:47,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 41 [2021-11-22 15:04:47,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395358820] [2021-11-22 15:04:47,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:04:47,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-22 15:04:47,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:47,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-22 15:04:47,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1489, Unknown=0, NotChecked=0, Total=1640 [2021-11-22 15:04:47,247 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand has 41 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 41 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:48,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:48,221 INFO L93 Difference]: Finished difference Result 137 states and 154 transitions. [2021-11-22 15:04:48,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 15:04:48,221 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 41 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-22 15:04:48,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:48,222 INFO L225 Difference]: With dead ends: 137 [2021-11-22 15:04:48,223 INFO L226 Difference]: Without dead ends: 137 [2021-11-22 15:04:48,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=267, Invalid=2385, Unknown=0, NotChecked=0, Total=2652 [2021-11-22 15:04:48,225 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 176 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 559 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:48,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 835 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 598 Invalid, 0 Unknown, 559 Unchecked, 0.4s Time] [2021-11-22 15:04:48,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-22 15:04:48,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 127. [2021-11-22 15:04:48,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 112 states have (on average 1.2946428571428572) internal successors, (145), 126 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 145 transitions. [2021-11-22 15:04:48,230 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 145 transitions. Word has length 33 [2021-11-22 15:04:48,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:48,231 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 145 transitions. [2021-11-22 15:04:48,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 41 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:48,231 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 145 transitions. [2021-11-22 15:04:48,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-22 15:04:48,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:48,232 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:48,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-22 15:04:48,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-22 15:04:48,446 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:04:48,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:48,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1604725579, now seen corresponding path program 1 times [2021-11-22 15:04:48,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:48,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597180981] [2021-11-22 15:04:48,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:48,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:48,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:48,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597180981] [2021-11-22 15:04:48,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597180981] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:04:48,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072065784] [2021-11-22 15:04:48,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:48,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:04:48,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:04:48,885 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:04:48,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-22 15:04:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:48,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-22 15:04:48,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:04:49,086 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:04:49,086 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 11 treesize of output 11 [2021-11-22 15:04:49,159 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 18 treesize of output 14 [2021-11-22 15:04:49,166 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 17 treesize of output 13 [2021-11-22 15:04:49,424 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-22 15:04:49,425 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 30 treesize of output 14 [2021-11-22 15:04:49,433 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 11 treesize of output 7 [2021-11-22 15:04:49,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:04:49,440 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 31 treesize of output 15 [2021-11-22 15:04:49,514 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-22 15:04:49,515 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 97 [2021-11-22 15:04:49,526 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-22 15:04:49,526 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 93 [2021-11-22 15:04:49,537 INFO L354 Elim1Store]: treesize reduction 59, result has 20.3 percent of original size [2021-11-22 15:04:49,537 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 111 treesize of output 75 [2021-11-22 15:04:49,778 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-22 15:04:49,778 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 59 [2021-11-22 15:04:49,784 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-22 15:04:49,784 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 29 [2021-11-22 15:04:49,932 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 21 treesize of output 13 [2021-11-22 15:04:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:49,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:04:50,362 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 334 treesize of output 295 [2021-11-22 15:04:50,712 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 1758 treesize of output 1710 [2021-11-22 15:04:52,373 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 428 treesize of output 416 [2021-11-22 15:04:52,963 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-22 15:04:52,964 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 69 treesize of output 68 [2021-11-22 15:04:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:53,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072065784] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:04:53,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:04:53,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 42 [2021-11-22 15:04:53,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332508828] [2021-11-22 15:04:53,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:04:53,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-22 15:04:53,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:53,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-22 15:04:53,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1551, Unknown=0, NotChecked=0, Total=1722 [2021-11-22 15:04:53,078 INFO L87 Difference]: Start difference. First operand 127 states and 145 transitions. Second operand has 42 states, 42 states have (on average 2.2142857142857144) internal successors, (93), 42 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:55,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:55,431 INFO L93 Difference]: Finished difference Result 213 states and 232 transitions. [2021-11-22 15:04:55,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-22 15:04:55,433 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.2142857142857144) internal successors, (93), 42 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-22 15:04:55,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:55,434 INFO L225 Difference]: With dead ends: 213 [2021-11-22 15:04:55,434 INFO L226 Difference]: Without dead ends: 213 [2021-11-22 15:04:55,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=408, Invalid=2672, Unknown=0, NotChecked=0, Total=3080 [2021-11-22 15:04:55,436 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 421 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1863 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 2399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 460 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:55,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 1283 Invalid, 2399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1863 Invalid, 0 Unknown, 460 Unchecked, 1.3s Time] [2021-11-22 15:04:55,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-22 15:04:55,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 129. [2021-11-22 15:04:55,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 114 states have (on average 1.2982456140350878) internal successors, (148), 128 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) [2021-11-22 15:04:55,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2021-11-22 15:04:55,441 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 33 [2021-11-22 15:04:55,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:55,442 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2021-11-22 15:04:55,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.2142857142857144) internal successors, (93), 42 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:55,442 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2021-11-22 15:04:55,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-22 15:04:55,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:55,443 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:55,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-22 15:04:55,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:04:55,650 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:04:55,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:55,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1604673024, now seen corresponding path program 1 times [2021-11-22 15:04:55,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:55,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788345505] [2021-11-22 15:04:55,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:55,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:55,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:55,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788345505] [2021-11-22 15:04:55,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788345505] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:04:55,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851969385] [2021-11-22 15:04:55,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:55,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:04:55,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:04:55,980 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:04:56,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-22 15:04:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:56,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-22 15:04:56,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:04:56,174 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 15:04:56,185 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:04:56,185 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 11 treesize of output 11 [2021-11-22 15:04:56,240 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 23 treesize of output 19 [2021-11-22 15:04:56,429 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 11 treesize of output 7 [2021-11-22 15:04:56,445 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-22 15:04:56,446 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 46 treesize of output 22 [2021-11-22 15:04:56,510 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-22 15:04:56,510 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 67 [2021-11-22 15:04:56,523 INFO L354 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2021-11-22 15:04:56,523 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 103 treesize of output 69 [2021-11-22 15:04:56,880 INFO L354 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2021-11-22 15:04:56,881 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 48 [2021-11-22 15:04:57,080 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:04:57,080 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 25 treesize of output 25 [2021-11-22 15:04:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:57,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:04:57,804 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 203 treesize of output 180 [2021-11-22 15:05:02,939 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 2834 treesize of output 2762 [2021-11-22 15:06:03,647 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:06:03,647 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 128 treesize of output 142 [2021-11-22 15:06:04,158 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-22 15:06:04,158 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 73 treesize of output 72 [2021-11-22 15:06:04,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:06:04,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851969385] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:06:04,332 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:06:04,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 18] total 46 [2021-11-22 15:06:04,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080939708] [2021-11-22 15:06:04,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:06:04,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-22 15:06:04,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:06:04,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-22 15:06:04,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1901, Unknown=0, NotChecked=0, Total=2070 [2021-11-22 15:06:04,334 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand has 46 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:06:06,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:06:06,011 INFO L93 Difference]: Finished difference Result 193 states and 212 transitions. [2021-11-22 15:06:06,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-22 15:06:06,012 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-22 15:06:06,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:06:06,013 INFO L225 Difference]: With dead ends: 193 [2021-11-22 15:06:06,013 INFO L226 Difference]: Without dead ends: 193 [2021-11-22 15:06:06,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=408, Invalid=3624, Unknown=0, NotChecked=0, Total=4032 [2021-11-22 15:06:06,015 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 221 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1135 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:06:06,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 1474 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 940 Invalid, 0 Unknown, 1135 Unchecked, 0.6s Time] [2021-11-22 15:06:06,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-22 15:06:06,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 127. [2021-11-22 15:06:06,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 112 states have (on average 1.2946428571428572) internal successors, (145), 126 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:06:06,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 145 transitions. [2021-11-22 15:06:06,021 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 145 transitions. Word has length 33 [2021-11-22 15:06:06,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:06:06,021 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 145 transitions. [2021-11-22 15:06:06,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:06:06,021 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 145 transitions. [2021-11-22 15:06:06,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-22 15:06:06,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:06:06,022 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:06:06,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-22 15:06:06,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-22 15:06:06,233 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:06:06,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:06:06,233 INFO L85 PathProgramCache]: Analyzing trace with hash -613917144, now seen corresponding path program 2 times [2021-11-22 15:06:06,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:06:06,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796012945] [2021-11-22 15:06:06,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:06:06,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:06:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:06:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:06:06,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:06:06,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796012945] [2021-11-22 15:06:06,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796012945] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:06:06,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500875365] [2021-11-22 15:06:06,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:06:06,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:06:06,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:06:06,564 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:06:06,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-22 15:06:06,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:06:06,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:06:06,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-22 15:06:06,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:06:06,784 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 15:06:06,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-22 15:06:06,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-22 15:06:07,017 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-22 15:06:07,018 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 46 treesize of output 22 [2021-11-22 15:06:07,046 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-11-22 15:06:07,047 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 22 treesize of output 24 [2021-11-22 15:06:07,128 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-22 15:06:07,128 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 47 treesize of output 34 [2021-11-22 15:06:07,446 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-11-22 15:06:07,447 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 3 case distinctions, treesize of input 90 treesize of output 42 [2021-11-22 15:06:07,572 INFO L354 Elim1Store]: treesize reduction 152, result has 12.6 percent of original size [2021-11-22 15:06:07,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 54 [2021-11-22 15:06:07,874 INFO L354 Elim1Store]: treesize reduction 90, result has 3.2 percent of original size [2021-11-22 15:06:07,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 99 treesize of output 42 [2021-11-22 15:06:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:06:07,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:06:13,727 INFO L354 Elim1Store]: treesize reduction 5, result has 89.4 percent of original size [2021-11-22 15:06:13,728 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 57 treesize of output 56 [2021-11-22 15:06:30,656 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 14034 treesize of output 13938 [2021-11-22 15:06:31,188 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 15:06:31,188 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:06:31,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-22 15:06:31,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891035620] [2021-11-22 15:06:31,189 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-22 15:06:31,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 15:06:31,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:06:31,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 15:06:31,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1633, Unknown=10, NotChecked=0, Total=1806 [2021-11-22 15:06:31,190 INFO L87 Difference]: Start difference. First operand 127 states and 145 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:06:31,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:06:31,900 INFO L93 Difference]: Finished difference Result 217 states and 238 transitions. [2021-11-22 15:06:31,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-22 15:06:31,901 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2021-11-22 15:06:31,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:06:31,902 INFO L225 Difference]: With dead ends: 217 [2021-11-22 15:06:31,902 INFO L226 Difference]: Without dead ends: 217 [2021-11-22 15:06:31,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=255, Invalid=2387, Unknown=10, NotChecked=0, Total=2652 [2021-11-22 15:06:31,903 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 126 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:06:31,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 392 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:06:31,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-22 15:06:31,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 141. [2021-11-22 15:06:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 126 states have (on average 1.2777777777777777) internal successors, (161), 140 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:06:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 161 transitions. [2021-11-22 15:06:31,908 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 161 transitions. Word has length 36 [2021-11-22 15:06:31,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:06:31,908 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 161 transitions. [2021-11-22 15:06:31,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:06:31,908 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 161 transitions. [2021-11-22 15:06:31,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-22 15:06:31,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:06:31,909 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:06:31,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-22 15:06:32,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-22 15:06:32,110 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:06:32,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:06:32,110 INFO L85 PathProgramCache]: Analyzing trace with hash 345872496, now seen corresponding path program 1 times [2021-11-22 15:06:32,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:06:32,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740341700] [2021-11-22 15:06:32,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:06:32,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:06:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:06:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:06:32,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:06:32,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740341700] [2021-11-22 15:06:32,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740341700] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:06:32,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692637529] [2021-11-22 15:06:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:06:32,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:06:32,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:06:32,508 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:06:32,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-22 15:06:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:06:32,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-22 15:06:32,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:06:32,685 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:06:32,685 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 11 treesize of output 11 [2021-11-22 15:06:32,734 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 18 treesize of output 14 [2021-11-22 15:06:32,898 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-22 15:06:32,898 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 35 treesize of output 17 [2021-11-22 15:06:32,915 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:06:32,915 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 11 treesize of output 11 [2021-11-22 15:06:32,972 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-22 15:06:32,973 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 37 treesize of output 30 [2021-11-22 15:06:33,188 INFO L354 Elim1Store]: treesize reduction 74, result has 28.2 percent of original size [2021-11-22 15:06:33,188 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 3 case distinctions, treesize of input 68 treesize of output 48 [2021-11-22 15:06:33,288 INFO L354 Elim1Store]: treesize reduction 76, result has 26.2 percent of original size [2021-11-22 15:06:33,288 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 3 case distinctions, treesize of input 64 treesize of output 59 [2021-11-22 15:06:33,771 INFO L354 Elim1Store]: treesize reduction 105, result has 31.4 percent of original size [2021-11-22 15:06:33,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 94 treesize of output 87 [2021-11-22 15:06:33,828 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:06:33,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:06:38,549 INFO L354 Elim1Store]: treesize reduction 5, result has 89.4 percent of original size [2021-11-22 15:06:38,550 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 57 treesize of output 56 [2021-11-22 15:07:12,022 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 1814008 treesize of output 1801720 [2021-11-22 15:08:42,946 WARN L227 SmtUtils]: Spent 1.52m on a formula simplification. DAG size of input: 1860 DAG size of output: 1860 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:08:43,138 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-22 15:08:43,141 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 1442304 treesize of output 1442303 [2021-11-22 15:08:51,193 WARN L227 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 1857 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:08:58,838 WARN L227 SmtUtils]: Spent 7.64s on a formula simplification that was a NOOP. DAG size: 1850 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:08:58,868 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 15:08:58,868 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:08:58,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-11-22 15:08:58,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379444157] [2021-11-22 15:08:58,869 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-22 15:08:58,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 15:08:58,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:08:58,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 15:08:58,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1681, Unknown=17, NotChecked=0, Total=1892 [2021-11-22 15:08:58,871 INFO L87 Difference]: Start difference. First operand 141 states and 161 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:03,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:03,407 INFO L93 Difference]: Finished difference Result 236 states and 266 transitions. [2021-11-22 15:09:03,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-22 15:09:03,408 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2021-11-22 15:09:03,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:03,409 INFO L225 Difference]: With dead ends: 236 [2021-11-22 15:09:03,410 INFO L226 Difference]: Without dead ends: 236 [2021-11-22 15:09:03,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 41.9s TimeCoverageRelationStatistics Valid=460, Invalid=2942, Unknown=20, NotChecked=0, Total=3422 [2021-11-22 15:09:03,412 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 318 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:03,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 646 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 15:09:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-22 15:09:03,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 158. [2021-11-22 15:09:03,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 143 states have (on average 1.2727272727272727) internal successors, (182), 157 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:03,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 182 transitions. [2021-11-22 15:09:03,417 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 182 transitions. Word has length 36 [2021-11-22 15:09:03,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:03,418 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 182 transitions. [2021-11-22 15:09:03,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:03,418 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 182 transitions. [2021-11-22 15:09:03,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-22 15:09:03,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:03,419 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:09:03,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-22 15:09:03,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-22 15:09:03,634 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:09:03,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:03,634 INFO L85 PathProgramCache]: Analyzing trace with hash 345872497, now seen corresponding path program 1 times [2021-11-22 15:09:03,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:03,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932282263] [2021-11-22 15:09:03,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:03,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:04,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:04,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:04,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932282263] [2021-11-22 15:09:04,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932282263] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:09:04,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213107056] [2021-11-22 15:09:04,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:04,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:09:04,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:09:04,120 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:09:04,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-22 15:09:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:04,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-22 15:09:04,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:09:04,280 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:09:04,280 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 11 treesize of output 11 [2021-11-22 15:09:04,337 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 18 treesize of output 14 [2021-11-22 15:09:04,349 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 [2021-11-22 15:09:04,559 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-22 15:09:04,559 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 35 treesize of output 17 [2021-11-22 15:09:04,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:09:04,568 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 13 [2021-11-22 15:09:04,624 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:09:04,625 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 11 treesize of output 11 [2021-11-22 15:09:04,705 INFO L354 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2021-11-22 15:09:04,706 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 23 treesize of output 30 [2021-11-22 15:09:04,731 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-22 15:09:04,731 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 37 treesize of output 30 [2021-11-22 15:09:05,014 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-22 15:09:05,014 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 25 treesize of output 23 [2021-11-22 15:09:05,056 INFO L354 Elim1Store]: treesize reduction 74, result has 28.2 percent of original size [2021-11-22 15:09:05,056 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 3 case distinctions, treesize of input 73 treesize of output 53 [2021-11-22 15:09:05,272 INFO L354 Elim1Store]: treesize reduction 76, result has 26.2 percent of original size [2021-11-22 15:09:05,272 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 3 case distinctions, treesize of input 97 treesize of output 92 [2021-11-22 15:09:05,287 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-22 15:09:05,287 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 110 treesize of output 109 [2021-11-22 15:09:15,087 INFO L354 Elim1Store]: treesize reduction 111, result has 27.5 percent of original size [2021-11-22 15:09:15,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 185 treesize of output 136 [2021-11-22 15:09:15,138 INFO L354 Elim1Store]: treesize reduction 111, result has 27.5 percent of original size [2021-11-22 15:09:15,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 136 treesize of output 147 [2021-11-22 15:09:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:15,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:09:23,081 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:09:23,082 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 142 treesize of output 146 [2021-11-22 15:09:47,743 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 26207 treesize of output 26015 [2021-11-22 15:09:48,449 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 23257 treesize of output 23233 [2021-11-22 15:09:49,031 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-22 15:09:49,032 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 22573 treesize of output 22572 [2021-11-22 15:09:49,405 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 15:09:49,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:09:49,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-11-22 15:09:49,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958149537] [2021-11-22 15:09:49,406 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-22 15:09:49,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 15:09:49,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:49,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 15:09:49,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=2208, Unknown=14, NotChecked=0, Total=2450 [2021-11-22 15:09:49,408 INFO L87 Difference]: Start difference. First operand 158 states and 182 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:54,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:54,062 INFO L93 Difference]: Finished difference Result 279 states and 312 transitions. [2021-11-22 15:09:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 15:09:54,062 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2021-11-22 15:09:54,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:54,064 INFO L225 Difference]: With dead ends: 279 [2021-11-22 15:09:54,064 INFO L226 Difference]: Without dead ends: 279 [2021-11-22 15:09:54,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1319 ImplicationChecksByTransitivity, 40.1s TimeCoverageRelationStatistics Valid=454, Invalid=3437, Unknown=15, NotChecked=0, Total=3906 [2021-11-22 15:09:54,070 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 395 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:54,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 640 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 15:09:54,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-11-22 15:09:54,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 157. [2021-11-22 15:09:54,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 142 states have (on average 1.267605633802817) internal successors, (180), 156 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) [2021-11-22 15:09:54,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2021-11-22 15:09:54,077 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 36 [2021-11-22 15:09:54,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:54,077 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2021-11-22 15:09:54,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:54,078 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2021-11-22 15:09:54,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-22 15:09:54,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:54,082 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:09:54,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-22 15:09:54,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-22 15:09:54,302 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:09:54,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:54,302 INFO L85 PathProgramCache]: Analyzing trace with hash -958911192, now seen corresponding path program 3 times [2021-11-22 15:09:54,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:54,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206117688] [2021-11-22 15:09:54,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:54,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:54,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:54,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206117688] [2021-11-22 15:09:54,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206117688] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:09:54,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602576554] [2021-11-22 15:09:54,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 15:09:54,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:09:54,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:09:54,767 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:09:54,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-22 15:09:54,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-22 15:09:54,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:09:54,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-22 15:09:54,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:09:54,951 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 15:09:54,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-22 15:09:54,999 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 23 treesize of output 19 [2021-11-22 15:09:55,146 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-22 15:09:55,146 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 46 treesize of output 22 [2021-11-22 15:09:55,188 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-11-22 15:09:55,189 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 22 treesize of output 24 [2021-11-22 15:09:55,262 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-22 15:09:55,263 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 47 treesize of output 34 [2021-11-22 15:09:55,529 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-11-22 15:09:55,529 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 3 case distinctions, treesize of input 90 treesize of output 42 [2021-11-22 15:09:55,620 INFO L354 Elim1Store]: treesize reduction 152, result has 12.6 percent of original size [2021-11-22 15:09:55,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 54 [2021-11-22 15:09:55,800 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-22 15:09:55,800 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 30 [2021-11-22 15:09:55,807 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:55,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:09:57,896 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_36 Int) (|ULTIMATE.start_main_~p~0#1.offset| Int)) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset| v_DerPreprocessor_36) (+ |ULTIMATE.start_main_~p~0#1.offset| 4) 0)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) 1)) is different from false [2021-11-22 15:10:05,596 INFO L354 Elim1Store]: treesize reduction 5, result has 89.4 percent of original size [2021-11-22 15:10:05,597 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 51 treesize of output 50 [2021-11-22 15:10:13,623 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 14544 treesize of output 14448 [2021-11-22 15:10:14,084 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 15:10:14,084 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:10:14,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-11-22 15:10:14,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197205666] [2021-11-22 15:10:14,085 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-22 15:10:14,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 15:10:14,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:14,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 15:10:14,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1326, Unknown=6, NotChecked=74, Total=1560 [2021-11-22 15:10:14,086 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:10:20,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:20,253 INFO L93 Difference]: Finished difference Result 261 states and 298 transitions. [2021-11-22 15:10:20,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-22 15:10:20,254 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2021-11-22 15:10:20,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:20,256 INFO L225 Difference]: With dead ends: 261 [2021-11-22 15:10:20,256 INFO L226 Difference]: Without dead ends: 261 [2021-11-22 15:10:20,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=378, Invalid=2479, Unknown=9, NotChecked=104, Total=2970 [2021-11-22 15:10:20,258 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 326 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:20,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 662 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 15:10:20,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-22 15:10:20,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 177. [2021-11-22 15:10:20,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 162 states have (on average 1.271604938271605) internal successors, (206), 176 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:10:20,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 206 transitions. [2021-11-22 15:10:20,284 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 206 transitions. Word has length 36 [2021-11-22 15:10:20,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:20,284 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 206 transitions. [2021-11-22 15:10:20,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:10:20,284 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 206 transitions. [2021-11-22 15:10:20,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-22 15:10:20,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:20,285 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:20,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-22 15:10:20,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:20,506 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:10:20,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:20,506 INFO L85 PathProgramCache]: Analyzing trace with hash -958911191, now seen corresponding path program 2 times [2021-11-22 15:10:20,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:20,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299182123] [2021-11-22 15:10:20,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:20,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:21,196 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:21,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:21,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299182123] [2021-11-22 15:10:21,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299182123] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:10:21,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455554690] [2021-11-22 15:10:21,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:10:21,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:21,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:10:21,199 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:10:21,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-22 15:10:21,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:10:21,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:10:21,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-22 15:10:21,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:10:21,381 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:10:21,381 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 11 treesize of output 11 [2021-11-22 15:10:21,445 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 [2021-11-22 15:10:21,461 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 18 treesize of output 14 [2021-11-22 15:10:21,695 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-22 15:10:21,695 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 23 treesize of output 19 [2021-11-22 15:10:21,722 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-22 15:10:21,722 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 31 treesize of output 15 [2021-11-22 15:10:21,800 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:10:21,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-22 15:10:21,892 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 21 treesize of output 20 [2021-11-22 15:10:21,899 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 [2021-11-22 15:10:22,321 INFO L354 Elim1Store]: treesize reduction 66, result has 29.0 percent of original size [2021-11-22 15:10:22,321 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 3 case distinctions, treesize of input 65 treesize of output 51 [2021-11-22 15:10:22,366 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 23 treesize of output 11 [2021-11-22 15:10:22,493 INFO L354 Elim1Store]: treesize reduction 68, result has 26.9 percent of original size [2021-11-22 15:10:22,493 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 3 case distinctions, treesize of input 87 treesize of output 88 [2021-11-22 15:10:22,509 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-22 15:10:22,510 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 98 treesize of output 97 [2021-11-22 15:10:23,294 INFO L354 Elim1Store]: treesize reduction 48, result has 44.8 percent of original size [2021-11-22 15:10:23,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 120 [2021-11-22 15:10:23,352 INFO L354 Elim1Store]: treesize reduction 48, result has 44.8 percent of original size [2021-11-22 15:10:23,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 120 treesize of output 132 [2021-11-22 15:10:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:23,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:10:53,093 WARN L227 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:11:34,434 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:11:34,434 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 136 treesize of output 140 [2021-11-22 15:11:36,522 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_39 Int) (v_subst_9 Int) (|ULTIMATE.start_main_~t~0#1.offset| Int)) (<= 0 (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) |ULTIMATE.start_main_~t~0#1.offset|)))) (store .cse0 |c_ULTIMATE.start_main_~t~0#1.base| (store (store (select .cse0 |c_ULTIMATE.start_main_~t~0#1.base|) v_subst_9 v_DerPreprocessor_39) (+ v_subst_9 4) 0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (forall ((v_subst_8 Int) (v_prenex_20 Int) (|ULTIMATE.start_main_~t~0#1.offset| Int)) (let ((.cse2 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (<= (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base|) .cse2 |ULTIMATE.start_main_~t~0#1.offset|)))) (store .cse1 |c_ULTIMATE.start_main_~t~0#1.base| (store (store (select .cse1 |c_ULTIMATE.start_main_~t~0#1.base|) v_subst_8 v_prenex_20) (+ v_subst_8 4) 0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) .cse2))) (forall ((v_subst_8 Int) (v_DerPreprocessor_38 Int)) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (store .cse3 |c_ULTIMATE.start_main_~t~0#1.base| (store (store (select .cse3 |c_ULTIMATE.start_main_~t~0#1.base|) v_subst_8 v_DerPreprocessor_38) (+ v_subst_8 4) 0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) |c_ULTIMATE.start_main_~p~0#1.base|))) is different from false [2021-11-22 15:11:56,528 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 92869 treesize of output 92077 [2021-11-22 15:12:02,344 WARN L227 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 579 DAG size of output: 569 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:12:02,369 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 57087 treesize of output 57063 [2021-11-22 15:12:03,325 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-22 15:12:03,326 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 56467 treesize of output 56466 [2021-11-22 15:12:04,002 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 15:12:04,002 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:12:04,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-11-22 15:12:04,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464269020] [2021-11-22 15:12:04,003 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-22 15:12:04,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 15:12:04,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:04,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 15:12:04,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1830, Unknown=18, NotChecked=88, Total=2162 [2021-11-22 15:12:04,004 INFO L87 Difference]: Start difference. First operand 177 states and 206 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:08,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:08,308 INFO L93 Difference]: Finished difference Result 294 states and 332 transitions. [2021-11-22 15:12:08,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-22 15:12:08,308 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2021-11-22 15:12:08,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:12:08,310 INFO L225 Difference]: With dead ends: 294 [2021-11-22 15:12:08,310 INFO L226 Difference]: Without dead ends: 294 [2021-11-22 15:12:08,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 95.5s TimeCoverageRelationStatistics Valid=417, Invalid=2874, Unknown=19, NotChecked=112, Total=3422 [2021-11-22 15:12:08,311 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 321 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:12:08,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 665 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 15:12:08,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-22 15:12:08,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 166. [2021-11-22 15:12:08,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 151 states have (on average 1.2649006622516556) internal successors, (191), 165 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 191 transitions. [2021-11-22 15:12:08,317 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 191 transitions. Word has length 36 [2021-11-22 15:12:08,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:12:08,318 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 191 transitions. [2021-11-22 15:12:08,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:08,318 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 191 transitions. [2021-11-22 15:12:08,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-22 15:12:08,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:12:08,319 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-22 15:12:08,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-22 15:12:08,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:12:08,526 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-22 15:12:08,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:08,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1611486422, now seen corresponding path program 2 times [2021-11-22 15:12:08,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:08,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851401544] [2021-11-22 15:12:08,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:08,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:08,843 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:08,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:08,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851401544] [2021-11-22 15:12:08,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851401544] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:12:08,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092670057] [2021-11-22 15:12:08,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:12:08,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:12:08,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:12:08,845 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:12:08,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dff1fa9-d6e1-40ed-96f3-6a2b94d748a0/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-22 15:12:08,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:12:08,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:12:08,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-22 15:12:08,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:12:09,008 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 11 treesize of output 7 [2021-11-22 15:12:09,069 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 15:12:09,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-22 15:12:09,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:12:09,153 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 27 treesize of output 11 [2021-11-22 15:12:09,159 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 23 treesize of output 19 [2021-11-22 15:12:09,216 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 31 treesize of output 13 [2021-11-22 15:12:09,347 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 19 treesize of output 18 [2021-11-22 15:12:09,415 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-22 15:12:09,415 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 16 treesize of output 18 [2021-11-22 15:12:09,480 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 22 treesize of output 18 [2021-11-22 15:12:09,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:12:09,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-22 15:12:09,550 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 41 treesize of output 23 [2021-11-22 15:12:09,752 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-22 15:12:09,752 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2021-11-22 15:12:09,844 INFO L354 Elim1Store]: treesize reduction 130, result has 14.5 percent of original size [2021-11-22 15:12:09,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 43 [2021-11-22 15:12:10,126 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-22 15:12:10,126 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 41 treesize of output 25 [2021-11-22 15:12:10,134 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:10,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:12:11,488 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_DerPreprocessor_42 Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset| 3) (+ |ULTIMATE.start_main_~p~0#1.offset| 4) v_DerPreprocessor_42)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)) is different from false [2021-11-22 15:13:04,742 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 149159899 treesize of output 148635611