./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 2f8161fc7f730bddeac54a8f174c52e5ef9cd819e9497e3a4087e68b96d46105 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 00:11:32,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 00:11:32,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 00:11:32,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 00:11:32,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 00:11:32,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 00:11:32,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 00:11:32,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 00:11:32,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 00:11:32,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 00:11:32,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 00:11:32,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 00:11:32,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 00:11:32,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 00:11:32,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 00:11:32,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 00:11:32,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 00:11:32,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 00:11:32,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 00:11:32,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 00:11:32,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 00:11:32,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 00:11:32,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 00:11:32,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 00:11:32,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 00:11:32,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 00:11:32,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 00:11:32,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 00:11:32,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 00:11:32,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 00:11:32,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 00:11:32,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 00:11:32,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 00:11:32,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 00:11:32,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 00:11:32,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 00:11:32,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 00:11:32,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 00:11:32,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 00:11:32,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 00:11:32,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 00:11:32,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-22 00:11:32,884 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 00:11:32,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 00:11:32,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 00:11:32,884 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 00:11:32,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 00:11:32,885 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 00:11:32,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 00:11:32,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 00:11:32,886 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 00:11:32,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 00:11:32,886 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 00:11:32,886 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 00:11:32,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 00:11:32,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 00:11:32,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 00:11:32,887 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 00:11:32,887 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 00:11:32,887 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 00:11:32,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 00:11:32,887 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 00:11:32,887 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 00:11:32,887 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 00:11:32,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 00:11:32,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 00:11:32,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 00:11:32,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:11:32,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 00:11:32,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 00:11:32,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 00:11:32,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 00:11:32,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 00:11:32,889 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f8161fc7f730bddeac54a8f174c52e5ef9cd819e9497e3a4087e68b96d46105 [2021-12-22 00:11:33,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 00:11:33,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 00:11:33,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 00:11:33,128 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 00:11:33,128 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 00:11:33,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i [2021-12-22 00:11:33,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80293d660/9b260a853d954b4b97ace2c71f7dfc77/FLAG63710c3b1 [2021-12-22 00:11:33,584 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 00:11:33,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i [2021-12-22 00:11:33,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80293d660/9b260a853d954b4b97ace2c71f7dfc77/FLAG63710c3b1 [2021-12-22 00:11:33,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80293d660/9b260a853d954b4b97ace2c71f7dfc77 [2021-12-22 00:11:33,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 00:11:33,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 00:11:33,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 00:11:33,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 00:11:33,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 00:11:33,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:11:33" (1/1) ... [2021-12-22 00:11:33,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74303b54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:11:33, skipping insertion in model container [2021-12-22 00:11:33,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:11:33" (1/1) ... [2021-12-22 00:11:33,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 00:11:34,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 00:11:34,200 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22569,22582] [2021-12-22 00:11:34,205 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22645,22658] [2021-12-22 00:11:34,206 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22715,22728] [2021-12-22 00:11:34,207 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22822,22835] [2021-12-22 00:11:34,208 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22894,22907] [2021-12-22 00:11:34,209 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23045,23058] [2021-12-22 00:11:34,210 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23119,23132] [2021-12-22 00:11:34,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:11:34,221 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 00:11:34,245 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22569,22582] [2021-12-22 00:11:34,246 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22645,22658] [2021-12-22 00:11:34,247 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22715,22728] [2021-12-22 00:11:34,247 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22822,22835] [2021-12-22 00:11:34,248 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22894,22907] [2021-12-22 00:11:34,249 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23045,23058] [2021-12-22 00:11:34,249 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23119,23132] [2021-12-22 00:11:34,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:11:34,270 INFO L208 MainTranslator]: Completed translation [2021-12-22 00:11:34,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:11:34 WrapperNode [2021-12-22 00:11:34,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 00:11:34,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 00:11:34,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 00:11:34,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 00:11:34,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:11:34" (1/1) ... [2021-12-22 00:11:34,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:11:34" (1/1) ... [2021-12-22 00:11:34,312 INFO L137 Inliner]: procedures = 119, calls = 39, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 159 [2021-12-22 00:11:34,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 00:11:34,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 00:11:34,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 00:11:34,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 00:11:34,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:11:34" (1/1) ... [2021-12-22 00:11:34,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:11:34" (1/1) ... [2021-12-22 00:11:34,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:11:34" (1/1) ... [2021-12-22 00:11:34,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:11:34" (1/1) ... [2021-12-22 00:11:34,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:11:34" (1/1) ... [2021-12-22 00:11:34,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:11:34" (1/1) ... [2021-12-22 00:11:34,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:11:34" (1/1) ... [2021-12-22 00:11:34,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 00:11:34,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 00:11:34,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 00:11:34,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 00:11:34,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:11:34" (1/1) ... [2021-12-22 00:11:34,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:11:34,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:11:34,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 00:11:34,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 00:11:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 00:11:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 00:11:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 00:11:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 00:11:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 00:11:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 00:11:34,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 00:11:34,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 00:11:34,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 00:11:34,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 00:11:34,494 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 00:11:34,496 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 00:11:34,812 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 00:11:34,817 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 00:11:34,818 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-22 00:11:34,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:11:34 BoogieIcfgContainer [2021-12-22 00:11:34,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 00:11:34,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 00:11:34,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 00:11:34,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 00:11:34,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:11:33" (1/3) ... [2021-12-22 00:11:34,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf262ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:11:34, skipping insertion in model container [2021-12-22 00:11:34,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:11:34" (2/3) ... [2021-12-22 00:11:34,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf262ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:11:34, skipping insertion in model container [2021-12-22 00:11:34,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:11:34" (3/3) ... [2021-12-22 00:11:34,828 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-1.i [2021-12-22 00:11:34,832 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 00:11:34,832 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-12-22 00:11:34,880 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 00:11:34,887 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 00:11:34,888 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-12-22 00:11:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 84 states have (on average 2.2023809523809526) internal successors, (185), 155 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:34,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-22 00:11:34,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:34,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-22 00:11:34,913 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:34,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:34,920 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-22 00:11:34,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:34,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355127187] [2021-12-22 00:11:34,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:34,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:35,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:35,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:35,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355127187] [2021-12-22 00:11:35,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355127187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:35,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:35,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:11:35,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986437950] [2021-12-22 00:11:35,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:35,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:11:35,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:35,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:11:35,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:11:35,111 INFO L87 Difference]: Start difference. First operand has 156 states, 84 states have (on average 2.2023809523809526) internal successors, (185), 155 states have internal predecessors, (185), 0 states have call successors, (0), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:35,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:35,216 INFO L93 Difference]: Finished difference Result 157 states and 162 transitions. [2021-12-22 00:11:35,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:11:35,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-12-22 00:11:35,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:35,224 INFO L225 Difference]: With dead ends: 157 [2021-12-22 00:11:35,224 INFO L226 Difference]: Without dead ends: 153 [2021-12-22 00:11:35,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:11:35,228 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 137 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:35,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 95 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:11:35,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-22 00:11:35,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2021-12-22 00:11:35,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 85 states have (on average 1.8352941176470587) internal successors, (156), 148 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:35,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 156 transitions. [2021-12-22 00:11:35,257 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 156 transitions. Word has length 3 [2021-12-22 00:11:35,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:35,258 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 156 transitions. [2021-12-22 00:11:35,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 156 transitions. [2021-12-22 00:11:35,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-22 00:11:35,259 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:35,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-22 00:11:35,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 00:11:35,259 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:35,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-22 00:11:35,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:35,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026562210] [2021-12-22 00:11:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:35,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:35,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:35,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026562210] [2021-12-22 00:11:35,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026562210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:35,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:35,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:11:35,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591005683] [2021-12-22 00:11:35,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:35,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:11:35,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:35,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:11:35,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:11:35,335 INFO L87 Difference]: Start difference. First operand 149 states and 156 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:35,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:35,422 INFO L93 Difference]: Finished difference Result 166 states and 172 transitions. [2021-12-22 00:11:35,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:11:35,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-12-22 00:11:35,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:35,424 INFO L225 Difference]: With dead ends: 166 [2021-12-22 00:11:35,424 INFO L226 Difference]: Without dead ends: 166 [2021-12-22 00:11:35,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:11:35,426 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 131 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:35,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 100 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:11:35,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-22 00:11:35,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 153. [2021-12-22 00:11:35,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 92 states have (on average 1.7391304347826086) internal successors, (160), 152 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:35,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 160 transitions. [2021-12-22 00:11:35,433 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 160 transitions. Word has length 3 [2021-12-22 00:11:35,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:35,433 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 160 transitions. [2021-12-22 00:11:35,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:35,434 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 160 transitions. [2021-12-22 00:11:35,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 00:11:35,434 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:35,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:35,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 00:11:35,435 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:35,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:35,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112042, now seen corresponding path program 1 times [2021-12-22 00:11:35,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:35,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732109310] [2021-12-22 00:11:35,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:35,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:35,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:35,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732109310] [2021-12-22 00:11:35,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732109310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:35,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:35,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:11:35,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492575131] [2021-12-22 00:11:35,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:35,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:11:35,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:35,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:11:35,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:11:35,490 INFO L87 Difference]: Start difference. First operand 153 states and 160 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:35,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:35,618 INFO L93 Difference]: Finished difference Result 154 states and 162 transitions. [2021-12-22 00:11:35,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:11:35,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-22 00:11:35,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:35,620 INFO L225 Difference]: With dead ends: 154 [2021-12-22 00:11:35,620 INFO L226 Difference]: Without dead ends: 154 [2021-12-22 00:11:35,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:11:35,621 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 214 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:35,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 77 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:11:35,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-12-22 00:11:35,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2021-12-22 00:11:35,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 94 states have (on average 1.5851063829787233) internal successors, (149), 139 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) [2021-12-22 00:11:35,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 149 transitions. [2021-12-22 00:11:35,627 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 149 transitions. Word has length 9 [2021-12-22 00:11:35,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:35,627 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 149 transitions. [2021-12-22 00:11:35,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:35,627 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 149 transitions. [2021-12-22 00:11:35,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 00:11:35,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:35,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:35,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 00:11:35,628 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:35,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:35,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112043, now seen corresponding path program 1 times [2021-12-22 00:11:35,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:35,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993685464] [2021-12-22 00:11:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:35,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:35,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:35,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:35,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993685464] [2021-12-22 00:11:35,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993685464] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:35,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:35,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:11:35,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363730400] [2021-12-22 00:11:35,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:35,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:11:35,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:35,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:11:35,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:11:35,708 INFO L87 Difference]: Start difference. First operand 140 states and 149 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:35,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:35,918 INFO L93 Difference]: Finished difference Result 179 states and 189 transitions. [2021-12-22 00:11:35,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:11:35,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-22 00:11:35,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:35,921 INFO L225 Difference]: With dead ends: 179 [2021-12-22 00:11:35,921 INFO L226 Difference]: Without dead ends: 179 [2021-12-22 00:11:35,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:11:35,926 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 321 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:35,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 140 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:11:35,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-12-22 00:11:35,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 150. [2021-12-22 00:11:35,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 105 states have (on average 1.542857142857143) internal successors, (162), 149 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:35,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2021-12-22 00:11:35,938 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 9 [2021-12-22 00:11:35,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:35,939 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2021-12-22 00:11:35,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:35,940 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2021-12-22 00:11:35,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 00:11:35,940 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:35,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:35,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 00:11:35,941 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:35,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:35,941 INFO L85 PathProgramCache]: Analyzing trace with hash 233166301, now seen corresponding path program 1 times [2021-12-22 00:11:35,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:35,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987227107] [2021-12-22 00:11:35,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:35,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:36,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:36,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987227107] [2021-12-22 00:11:36,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987227107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:36,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:36,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:11:36,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52781726] [2021-12-22 00:11:36,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:36,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:11:36,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:36,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:11:36,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:11:36,008 INFO L87 Difference]: Start difference. First operand 150 states and 162 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:36,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:36,124 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2021-12-22 00:11:36,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 00:11:36,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-22 00:11:36,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:36,129 INFO L225 Difference]: With dead ends: 164 [2021-12-22 00:11:36,129 INFO L226 Difference]: Without dead ends: 164 [2021-12-22 00:11:36,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:11:36,130 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 149 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:36,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 175 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:11:36,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-12-22 00:11:36,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 148. [2021-12-22 00:11:36,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 104 states have (on average 1.5192307692307692) internal successors, (158), 147 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:36,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2021-12-22 00:11:36,135 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 11 [2021-12-22 00:11:36,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:36,135 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2021-12-22 00:11:36,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:36,136 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2021-12-22 00:11:36,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-22 00:11:36,136 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:36,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:36,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 00:11:36,136 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:36,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:36,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413642, now seen corresponding path program 1 times [2021-12-22 00:11:36,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:36,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165269041] [2021-12-22 00:11:36,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:36,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:36,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:36,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165269041] [2021-12-22 00:11:36,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165269041] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:36,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:36,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:11:36,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896405083] [2021-12-22 00:11:36,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:36,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:11:36,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:36,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:11:36,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:11:36,194 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:36,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:36,323 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2021-12-22 00:11:36,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:11:36,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-22 00:11:36,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:36,324 INFO L225 Difference]: With dead ends: 147 [2021-12-22 00:11:36,324 INFO L226 Difference]: Without dead ends: 147 [2021-12-22 00:11:36,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:11:36,325 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 6 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:36,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 323 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:11:36,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-12-22 00:11:36,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-12-22 00:11:36,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 104 states have (on average 1.5) internal successors, (156), 146 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:36,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 156 transitions. [2021-12-22 00:11:36,330 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 156 transitions. Word has length 12 [2021-12-22 00:11:36,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:36,330 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 156 transitions. [2021-12-22 00:11:36,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:36,330 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 156 transitions. [2021-12-22 00:11:36,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-22 00:11:36,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:36,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:36,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 00:11:36,331 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:36,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:36,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413643, now seen corresponding path program 1 times [2021-12-22 00:11:36,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:36,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741144829] [2021-12-22 00:11:36,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:36,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:36,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:36,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741144829] [2021-12-22 00:11:36,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741144829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:36,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:36,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:11:36,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981754323] [2021-12-22 00:11:36,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:36,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:11:36,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:36,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:11:36,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:11:36,365 INFO L87 Difference]: Start difference. First operand 147 states and 156 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:36,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:36,467 INFO L93 Difference]: Finished difference Result 146 states and 154 transitions. [2021-12-22 00:11:36,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:11:36,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-22 00:11:36,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:36,469 INFO L225 Difference]: With dead ends: 146 [2021-12-22 00:11:36,469 INFO L226 Difference]: Without dead ends: 146 [2021-12-22 00:11:36,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:11:36,469 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 7 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:36,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 338 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:11:36,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-12-22 00:11:36,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-12-22 00:11:36,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 104 states have (on average 1.4807692307692308) internal successors, (154), 145 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) [2021-12-22 00:11:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2021-12-22 00:11:36,473 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 12 [2021-12-22 00:11:36,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:36,473 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2021-12-22 00:11:36,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:36,474 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2021-12-22 00:11:36,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-22 00:11:36,474 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:36,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:36,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 00:11:36,475 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:36,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:36,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1299214142, now seen corresponding path program 1 times [2021-12-22 00:11:36,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:36,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063975573] [2021-12-22 00:11:36,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:36,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:36,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:36,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:36,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063975573] [2021-12-22 00:11:36,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063975573] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:36,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:36,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 00:11:36,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607932643] [2021-12-22 00:11:36,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:36,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:11:36,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:36,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:11:36,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:11:36,521 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:36,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:36,688 INFO L93 Difference]: Finished difference Result 200 states and 212 transitions. [2021-12-22 00:11:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:11:36,689 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-12-22 00:11:36,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:36,690 INFO L225 Difference]: With dead ends: 200 [2021-12-22 00:11:36,690 INFO L226 Difference]: Without dead ends: 200 [2021-12-22 00:11:36,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:11:36,691 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 197 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:36,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 314 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:11:36,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-12-22 00:11:36,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 151. [2021-12-22 00:11:36,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 1.4587155963302751) internal successors, (159), 150 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:36,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 159 transitions. [2021-12-22 00:11:36,694 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 159 transitions. Word has length 14 [2021-12-22 00:11:36,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:36,695 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 159 transitions. [2021-12-22 00:11:36,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:36,695 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 159 transitions. [2021-12-22 00:11:36,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-22 00:11:36,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:36,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:36,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 00:11:36,695 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:36,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:36,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362871, now seen corresponding path program 1 times [2021-12-22 00:11:36,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:36,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435842156] [2021-12-22 00:11:36,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:36,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:36,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:36,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:36,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435842156] [2021-12-22 00:11:36,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435842156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:36,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:36,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 00:11:36,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82559753] [2021-12-22 00:11:36,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:36,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 00:11:36,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:36,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 00:11:36,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:11:36,772 INFO L87 Difference]: Start difference. First operand 151 states and 159 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:36,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:36,979 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2021-12-22 00:11:36,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 00:11:36,979 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-22 00:11:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:36,980 INFO L225 Difference]: With dead ends: 150 [2021-12-22 00:11:36,980 INFO L226 Difference]: Without dead ends: 150 [2021-12-22 00:11:36,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-12-22 00:11:36,981 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 187 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:36,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 221 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:11:36,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-12-22 00:11:36,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-12-22 00:11:36,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 109 states have (on average 1.4495412844036697) internal successors, (158), 149 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 158 transitions. [2021-12-22 00:11:36,983 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 158 transitions. Word has length 16 [2021-12-22 00:11:36,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:36,984 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 158 transitions. [2021-12-22 00:11:36,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:36,984 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 158 transitions. [2021-12-22 00:11:36,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-22 00:11:36,984 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:36,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:36,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 00:11:36,984 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:36,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:36,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362872, now seen corresponding path program 1 times [2021-12-22 00:11:36,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:36,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803943551] [2021-12-22 00:11:36,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:36,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:37,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:37,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:37,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803943551] [2021-12-22 00:11:37,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803943551] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:37,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:37,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 00:11:37,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202646417] [2021-12-22 00:11:37,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:37,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 00:11:37,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:37,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 00:11:37,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 00:11:37,099 INFO L87 Difference]: Start difference. First operand 150 states and 158 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:37,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:37,516 INFO L93 Difference]: Finished difference Result 168 states and 177 transitions. [2021-12-22 00:11:37,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 00:11:37,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-22 00:11:37,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:37,517 INFO L225 Difference]: With dead ends: 168 [2021-12-22 00:11:37,517 INFO L226 Difference]: Without dead ends: 168 [2021-12-22 00:11:37,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2021-12-22 00:11:37,518 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 233 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:37,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 355 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 00:11:37,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-12-22 00:11:37,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 154. [2021-12-22 00:11:37,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 119 states have (on average 1.3949579831932772) internal successors, (166), 153 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:37,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 166 transitions. [2021-12-22 00:11:37,521 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 166 transitions. Word has length 16 [2021-12-22 00:11:37,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:37,521 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 166 transitions. [2021-12-22 00:11:37,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:37,521 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 166 transitions. [2021-12-22 00:11:37,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-22 00:11:37,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:37,521 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:37,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 00:11:37,522 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:37,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:37,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1997554901, now seen corresponding path program 1 times [2021-12-22 00:11:37,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:37,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071293974] [2021-12-22 00:11:37,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:37,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:37,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:37,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071293974] [2021-12-22 00:11:37,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071293974] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:11:37,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897602477] [2021-12-22 00:11:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:37,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:11:37,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:11:37,587 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 00:11:37,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 00:11:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:37,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-22 00:11:37,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:11:37,700 INFO L387 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 [2021-12-22 00:11:37,705 INFO L387 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 [2021-12-22 00:11:37,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:11:37,734 INFO L387 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 [2021-12-22 00:11:37,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:11:37,740 INFO L387 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 [2021-12-22 00:11:37,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:11:37,758 INFO L387 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 [2021-12-22 00:11:37,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:11:37,763 INFO L387 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 [2021-12-22 00:11:37,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:11:37,880 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 00:11:37,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:11:37,901 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:11:37,901 INFO L387 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 15 treesize of output 10 [2021-12-22 00:11:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:37,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:11:38,216 INFO L387 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 19 [2021-12-22 00:11:38,218 INFO L387 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 19 treesize of output 17 [2021-12-22 00:11:38,222 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2021-12-22 00:11:38,227 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2021-12-22 00:11:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:38,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897602477] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:11:38,245 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:11:38,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2021-12-22 00:11:38,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12308566] [2021-12-22 00:11:38,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:11:38,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 00:11:38,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:38,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 00:11:38,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-22 00:11:38,246 INFO L87 Difference]: Start difference. First operand 154 states and 166 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:38,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:38,498 INFO L93 Difference]: Finished difference Result 205 states and 221 transitions. [2021-12-22 00:11:38,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 00:11:38,498 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 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 21 [2021-12-22 00:11:38,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:38,499 INFO L225 Difference]: With dead ends: 205 [2021-12-22 00:11:38,499 INFO L226 Difference]: Without dead ends: 205 [2021-12-22 00:11:38,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-12-22 00:11:38,500 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 337 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:38,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 503 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 331 Invalid, 0 Unknown, 54 Unchecked, 0.2s Time] [2021-12-22 00:11:38,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-12-22 00:11:38,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 161. [2021-12-22 00:11:38,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 126 states have (on average 1.380952380952381) internal successors, (174), 160 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:38,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 174 transitions. [2021-12-22 00:11:38,502 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 174 transitions. Word has length 21 [2021-12-22 00:11:38,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:38,503 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 174 transitions. [2021-12-22 00:11:38,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:38,503 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 174 transitions. [2021-12-22 00:11:38,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-22 00:11:38,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:38,503 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] [2021-12-22 00:11:38,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 00:11:38,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-22 00:11:38,711 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:38,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:38,712 INFO L85 PathProgramCache]: Analyzing trace with hash -2039573154, now seen corresponding path program 1 times [2021-12-22 00:11:38,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:38,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573447670] [2021-12-22 00:11:38,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:38,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:38,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:38,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573447670] [2021-12-22 00:11:38,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573447670] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:38,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:38,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:11:38,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329974825] [2021-12-22 00:11:38,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:38,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:11:38,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:38,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:11:38,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:11:38,760 INFO L87 Difference]: Start difference. First operand 161 states and 174 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:38,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:38,856 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2021-12-22 00:11:38,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:11:38,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-12-22 00:11:38,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:38,858 INFO L225 Difference]: With dead ends: 165 [2021-12-22 00:11:38,858 INFO L226 Difference]: Without dead ends: 165 [2021-12-22 00:11:38,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:11:38,858 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 25 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:38,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 328 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:11:38,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-12-22 00:11:38,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 160. [2021-12-22 00:11:38,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 125 states have (on average 1.368) internal successors, (171), 159 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:38,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2021-12-22 00:11:38,861 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 21 [2021-12-22 00:11:38,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:38,862 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2021-12-22 00:11:38,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:38,862 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2021-12-22 00:11:38,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 00:11:38,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:38,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:38,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 00:11:38,872 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:38,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:38,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1819127547, now seen corresponding path program 1 times [2021-12-22 00:11:38,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:38,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482482856] [2021-12-22 00:11:38,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:38,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:38,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:38,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:38,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482482856] [2021-12-22 00:11:38,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482482856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:38,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:38,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:11:38,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386672714] [2021-12-22 00:11:38,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:38,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:11:38,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:38,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:11:38,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:11:38,911 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:38,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:38,976 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2021-12-22 00:11:38,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 00:11:38,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-22 00:11:38,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:38,978 INFO L225 Difference]: With dead ends: 162 [2021-12-22 00:11:38,978 INFO L226 Difference]: Without dead ends: 162 [2021-12-22 00:11:38,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:11:38,979 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 20 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:38,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 279 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:11:38,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-12-22 00:11:38,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 158. [2021-12-22 00:11:38,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 124 states have (on average 1.3548387096774193) internal successors, (168), 157 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:38,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 168 transitions. [2021-12-22 00:11:38,982 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 168 transitions. Word has length 22 [2021-12-22 00:11:38,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:38,982 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 168 transitions. [2021-12-22 00:11:38,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:38,983 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 168 transitions. [2021-12-22 00:11:38,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-22 00:11:38,983 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:38,983 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] [2021-12-22 00:11:38,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 00:11:38,984 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:38,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:38,984 INFO L85 PathProgramCache]: Analyzing trace with hash 391604008, now seen corresponding path program 1 times [2021-12-22 00:11:38,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:38,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982823444] [2021-12-22 00:11:38,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:38,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:39,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:39,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982823444] [2021-12-22 00:11:39,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982823444] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:39,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:39,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:11:39,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240056342] [2021-12-22 00:11:39,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:39,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:11:39,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:39,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:11:39,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:11:39,020 INFO L87 Difference]: Start difference. First operand 158 states and 168 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 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) [2021-12-22 00:11:39,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:39,124 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions. [2021-12-22 00:11:39,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:11:39,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 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 [2021-12-22 00:11:39,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:39,126 INFO L225 Difference]: With dead ends: 157 [2021-12-22 00:11:39,126 INFO L226 Difference]: Without dead ends: 157 [2021-12-22 00:11:39,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:11:39,126 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 6 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:39,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 313 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:11:39,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-22 00:11:39,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-12-22 00:11:39,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 124 states have (on average 1.346774193548387) internal successors, (167), 156 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:39,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2021-12-22 00:11:39,129 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 24 [2021-12-22 00:11:39,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:39,130 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2021-12-22 00:11:39,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 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) [2021-12-22 00:11:39,130 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2021-12-22 00:11:39,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-22 00:11:39,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:39,131 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] [2021-12-22 00:11:39,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 00:11:39,131 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:39,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:39,131 INFO L85 PathProgramCache]: Analyzing trace with hash 391604009, now seen corresponding path program 1 times [2021-12-22 00:11:39,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:39,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029704584] [2021-12-22 00:11:39,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:39,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:39,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:39,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:39,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029704584] [2021-12-22 00:11:39,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029704584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:39,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:39,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:11:39,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881543453] [2021-12-22 00:11:39,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:39,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:11:39,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:39,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:11:39,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:11:39,176 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 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) [2021-12-22 00:11:39,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:39,293 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2021-12-22 00:11:39,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:11:39,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 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 [2021-12-22 00:11:39,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:39,295 INFO L225 Difference]: With dead ends: 156 [2021-12-22 00:11:39,295 INFO L226 Difference]: Without dead ends: 156 [2021-12-22 00:11:39,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:11:39,295 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 2 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:39,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 303 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:11:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-12-22 00:11:39,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-12-22 00:11:39,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 124 states have (on average 1.3387096774193548) internal successors, (166), 155 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:39,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2021-12-22 00:11:39,298 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 24 [2021-12-22 00:11:39,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:39,298 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2021-12-22 00:11:39,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 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) [2021-12-22 00:11:39,298 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2021-12-22 00:11:39,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-22 00:11:39,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:39,298 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] [2021-12-22 00:11:39,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 00:11:39,298 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:39,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:39,299 INFO L85 PathProgramCache]: Analyzing trace with hash -264588155, now seen corresponding path program 1 times [2021-12-22 00:11:39,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:39,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888449810] [2021-12-22 00:11:39,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:39,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:39,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:39,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:39,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888449810] [2021-12-22 00:11:39,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888449810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:39,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:39,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:11:39,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87204380] [2021-12-22 00:11:39,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:39,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:11:39,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:39,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:11:39,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:11:39,338 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:39,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:39,405 INFO L93 Difference]: Finished difference Result 155 states and 164 transitions. [2021-12-22 00:11:39,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 00:11:39,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-12-22 00:11:39,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:39,406 INFO L225 Difference]: With dead ends: 155 [2021-12-22 00:11:39,407 INFO L226 Difference]: Without dead ends: 155 [2021-12-22 00:11:39,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:11:39,407 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 15 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:39,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 255 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:11:39,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-22 00:11:39,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2021-12-22 00:11:39,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 153 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:39,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 163 transitions. [2021-12-22 00:11:39,410 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 163 transitions. Word has length 25 [2021-12-22 00:11:39,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:39,410 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 163 transitions. [2021-12-22 00:11:39,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:39,410 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 163 transitions. [2021-12-22 00:11:39,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 00:11:39,411 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:39,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:39,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 00:11:39,411 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:39,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:39,412 INFO L85 PathProgramCache]: Analyzing trace with hash 201988172, now seen corresponding path program 1 times [2021-12-22 00:11:39,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:39,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135185210] [2021-12-22 00:11:39,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:39,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:11:39,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:39,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135185210] [2021-12-22 00:11:39,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135185210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:39,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:39,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:11:39,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427313525] [2021-12-22 00:11:39,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:39,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:11:39,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:39,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:11:39,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:11:39,432 INFO L87 Difference]: Start difference. First operand 154 states and 163 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:39,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:39,465 INFO L93 Difference]: Finished difference Result 156 states and 165 transitions. [2021-12-22 00:11:39,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:11:39,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-22 00:11:39,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:39,466 INFO L225 Difference]: With dead ends: 156 [2021-12-22 00:11:39,466 INFO L226 Difference]: Without dead ends: 156 [2021-12-22 00:11:39,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:11:39,467 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 72 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:39,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 114 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:11:39,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-12-22 00:11:39,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-12-22 00:11:39,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 125 states have (on average 1.32) internal successors, (165), 155 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 165 transitions. [2021-12-22 00:11:39,470 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 165 transitions. Word has length 27 [2021-12-22 00:11:39,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:39,470 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 165 transitions. [2021-12-22 00:11:39,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:39,470 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 165 transitions. [2021-12-22 00:11:39,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 00:11:39,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:39,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:39,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 00:11:39,471 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:39,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:39,472 INFO L85 PathProgramCache]: Analyzing trace with hash -866016759, now seen corresponding path program 1 times [2021-12-22 00:11:39,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:39,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569738982] [2021-12-22 00:11:39,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:39,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:39,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:39,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:39,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569738982] [2021-12-22 00:11:39,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569738982] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:39,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:39,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:11:39,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459413648] [2021-12-22 00:11:39,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:39,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:11:39,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:39,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:11:39,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:11:39,555 INFO L87 Difference]: Start difference. First operand 156 states and 165 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:39,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:39,716 INFO L93 Difference]: Finished difference Result 169 states and 178 transitions. [2021-12-22 00:11:39,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:11:39,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-22 00:11:39,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:39,718 INFO L225 Difference]: With dead ends: 169 [2021-12-22 00:11:39,718 INFO L226 Difference]: Without dead ends: 169 [2021-12-22 00:11:39,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:11:39,718 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 263 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:39,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 172 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:11:39,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-22 00:11:39,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 154. [2021-12-22 00:11:39,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 153 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:39,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 162 transitions. [2021-12-22 00:11:39,721 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 162 transitions. Word has length 27 [2021-12-22 00:11:39,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:39,722 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 162 transitions. [2021-12-22 00:11:39,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:39,722 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 162 transitions. [2021-12-22 00:11:39,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 00:11:39,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:39,723 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] [2021-12-22 00:11:39,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 00:11:39,723 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:39,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:39,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1099927530, now seen corresponding path program 1 times [2021-12-22 00:11:39,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:39,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894335131] [2021-12-22 00:11:39,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:39,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:39,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:39,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894335131] [2021-12-22 00:11:39,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894335131] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:39,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:39,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 00:11:39,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111874865] [2021-12-22 00:11:39,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:39,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 00:11:39,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:39,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 00:11:39,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:11:39,815 INFO L87 Difference]: Start difference. First operand 154 states and 162 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 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) [2021-12-22 00:11:40,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:40,089 INFO L93 Difference]: Finished difference Result 154 states and 162 transitions. [2021-12-22 00:11:40,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 00:11:40,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 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 [2021-12-22 00:11:40,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:40,090 INFO L225 Difference]: With dead ends: 154 [2021-12-22 00:11:40,090 INFO L226 Difference]: Without dead ends: 154 [2021-12-22 00:11:40,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-12-22 00:11:40,091 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 57 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:40,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 348 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:11:40,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-12-22 00:11:40,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2021-12-22 00:11:40,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 124 states have (on average 1.2983870967741935) internal successors, (161), 152 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) [2021-12-22 00:11:40,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 161 transitions. [2021-12-22 00:11:40,094 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 161 transitions. Word has length 28 [2021-12-22 00:11:40,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:40,094 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 161 transitions. [2021-12-22 00:11:40,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 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) [2021-12-22 00:11:40,094 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 161 transitions. [2021-12-22 00:11:40,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 00:11:40,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:40,094 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] [2021-12-22 00:11:40,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 00:11:40,095 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:40,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:40,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1099927531, now seen corresponding path program 1 times [2021-12-22 00:11:40,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:40,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799251777] [2021-12-22 00:11:40,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:40,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:40,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:40,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:40,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799251777] [2021-12-22 00:11:40,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799251777] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:40,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:11:40,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 00:11:40,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036556387] [2021-12-22 00:11:40,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:40,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 00:11:40,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:40,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 00:11:40,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:11:40,204 INFO L87 Difference]: Start difference. First operand 153 states and 161 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 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) [2021-12-22 00:11:40,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:40,476 INFO L93 Difference]: Finished difference Result 149 states and 157 transitions. [2021-12-22 00:11:40,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 00:11:40,476 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 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 [2021-12-22 00:11:40,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:40,477 INFO L225 Difference]: With dead ends: 149 [2021-12-22 00:11:40,477 INFO L226 Difference]: Without dead ends: 149 [2021-12-22 00:11:40,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-12-22 00:11:40,478 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 67 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:40,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 453 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:11:40,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-12-22 00:11:40,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 130. [2021-12-22 00:11:40,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 108 states have (on average 1.2685185185185186) internal successors, (137), 129 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:40,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 137 transitions. [2021-12-22 00:11:40,480 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 137 transitions. Word has length 28 [2021-12-22 00:11:40,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:40,480 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 137 transitions. [2021-12-22 00:11:40,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 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) [2021-12-22 00:11:40,480 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 137 transitions. [2021-12-22 00:11:40,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-22 00:11:40,480 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:40,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:40,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 00:11:40,481 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:40,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:40,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2136034553, now seen corresponding path program 1 times [2021-12-22 00:11:40,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:40,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245757093] [2021-12-22 00:11:40,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:40,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:40,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:40,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:40,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245757093] [2021-12-22 00:11:40,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245757093] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:11:40,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172832288] [2021-12-22 00:11:40,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:40,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:11:40,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:11:40,530 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 00:11:40,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 00:11:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:40,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 00:11:40,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:11:40,611 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 00:11:40,640 INFO L387 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 19 treesize of output 7 [2021-12-22 00:11:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:11:40,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:11:40,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172832288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:11:40,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 00:11:40,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2021-12-22 00:11:40,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552350965] [2021-12-22 00:11:40,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:11:40,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:11:40,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:40,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:11:40,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:11:40,654 INFO L87 Difference]: Start difference. First operand 130 states and 137 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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) [2021-12-22 00:11:40,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:40,705 INFO L93 Difference]: Finished difference Result 139 states and 146 transitions. [2021-12-22 00:11:40,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 00:11:40,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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 [2021-12-22 00:11:40,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:40,706 INFO L225 Difference]: With dead ends: 139 [2021-12-22 00:11:40,706 INFO L226 Difference]: Without dead ends: 139 [2021-12-22 00:11:40,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-22 00:11:40,707 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 6 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:40,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 252 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:11:40,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-12-22 00:11:40,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 133. [2021-12-22 00:11:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 111 states have (on average 1.2612612612612613) internal successors, (140), 132 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) [2021-12-22 00:11:40,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 140 transitions. [2021-12-22 00:11:40,709 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 140 transitions. Word has length 29 [2021-12-22 00:11:40,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:40,710 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 140 transitions. [2021-12-22 00:11:40,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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) [2021-12-22 00:11:40,710 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 140 transitions. [2021-12-22 00:11:40,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 00:11:40,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:40,710 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:40,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 00:11:40,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-22 00:11:40,929 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:40,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:40,929 INFO L85 PathProgramCache]: Analyzing trace with hash 180762931, now seen corresponding path program 1 times [2021-12-22 00:11:40,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:40,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996521087] [2021-12-22 00:11:40,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:40,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:41,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:41,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996521087] [2021-12-22 00:11:41,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996521087] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:11:41,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526760572] [2021-12-22 00:11:41,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:41,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:11:41,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:11:41,031 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 00:11:41,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 00:11:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:41,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-22 00:11:41,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:11:41,116 INFO L387 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 [2021-12-22 00:11:41,119 INFO L387 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 [2021-12-22 00:11:41,132 INFO L353 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-22 00:11:41,132 INFO L387 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 21 treesize of output 20 [2021-12-22 00:11:41,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:11:41,137 INFO L387 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 [2021-12-22 00:11:41,150 INFO L353 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-22 00:11:41,150 INFO L387 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 21 treesize of output 20 [2021-12-22 00:11:41,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:11:41,154 INFO L387 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 [2021-12-22 00:11:41,227 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 00:11:41,229 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 00:11:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:11:41,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:11:41,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:11:41,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526760572] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:11:41,365 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:11:41,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 9 [2021-12-22 00:11:41,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804603221] [2021-12-22 00:11:41,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:11:41,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 00:11:41,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:41,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 00:11:41,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:11:41,367 INFO L87 Difference]: Start difference. First operand 133 states and 140 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:41,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:41,675 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2021-12-22 00:11:41,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 00:11:41,675 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-22 00:11:41,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:41,676 INFO L225 Difference]: With dead ends: 181 [2021-12-22 00:11:41,676 INFO L226 Difference]: Without dead ends: 181 [2021-12-22 00:11:41,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-12-22 00:11:41,677 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 78 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:41,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 468 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:11:41,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-12-22 00:11:41,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 144. [2021-12-22 00:11:41,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 122 states have (on average 1.2540983606557377) internal successors, (153), 143 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:41,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2021-12-22 00:11:41,679 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 30 [2021-12-22 00:11:41,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:41,679 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2021-12-22 00:11:41,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:41,679 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2021-12-22 00:11:41,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-22 00:11:41,679 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:41,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:41,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 00:11:41,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:11:41,887 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr70ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:41,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:41,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1308683207, now seen corresponding path program 1 times [2021-12-22 00:11:41,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:41,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142112586] [2021-12-22 00:11:41,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:41,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:11:41,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:41,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142112586] [2021-12-22 00:11:41,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142112586] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:11:41,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366435049] [2021-12-22 00:11:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:41,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:11:41,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:11:41,915 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 00:11:41,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 00:11:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:41,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 00:11:41,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:11:42,048 INFO L387 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 13 treesize of output 9 [2021-12-22 00:11:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:11:42,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:11:42,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:11:42,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366435049] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:11:42,122 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:11:42,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2021-12-22 00:11:42,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181660573] [2021-12-22 00:11:42,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:11:42,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:11:42,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:42,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:11:42,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:11:42,123 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:42,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:42,207 INFO L93 Difference]: Finished difference Result 152 states and 160 transitions. [2021-12-22 00:11:42,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 00:11:42,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 [2021-12-22 00:11:42,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:42,208 INFO L225 Difference]: With dead ends: 152 [2021-12-22 00:11:42,208 INFO L226 Difference]: Without dead ends: 129 [2021-12-22 00:11:42,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:11:42,208 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 0 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:42,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 273 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 44 Unchecked, 0.1s Time] [2021-12-22 00:11:42,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-22 00:11:42,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-12-22 00:11:42,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 107 states have (on average 1.280373831775701) internal successors, (137), 128 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:42,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 137 transitions. [2021-12-22 00:11:42,211 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 137 transitions. Word has length 31 [2021-12-22 00:11:42,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:42,211 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 137 transitions. [2021-12-22 00:11:42,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:42,211 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 137 transitions. [2021-12-22 00:11:42,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-22 00:11:42,211 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:42,212 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:42,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 00:11:42,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:11:42,427 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:42,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:42,428 INFO L85 PathProgramCache]: Analyzing trace with hash 929038273, now seen corresponding path program 1 times [2021-12-22 00:11:42,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:42,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93966393] [2021-12-22 00:11:42,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:42,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:42,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:42,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93966393] [2021-12-22 00:11:42,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93966393] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:11:42,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417221507] [2021-12-22 00:11:42,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:42,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:11:42,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:11:42,654 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 00:11:42,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 00:11:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:42,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-22 00:11:42,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:11:42,787 INFO L387 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 [2021-12-22 00:11:42,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 00:11:42,866 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:11:42,866 INFO L387 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 [2021-12-22 00:11:42,881 INFO L387 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 11 treesize of output 7 [2021-12-22 00:11:42,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:11:42,890 INFO L387 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 [2021-12-22 00:11:42,947 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:11:42,947 INFO L387 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 29 treesize of output 30 [2021-12-22 00:11:42,950 INFO L387 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 20 treesize of output 22 [2021-12-22 00:11:42,973 INFO L387 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 16 treesize of output 8 [2021-12-22 00:11:42,995 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-22 00:11:43,027 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-22 00:11:43,077 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 00:11:43,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:43,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:11:43,119 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_915 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_915) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)) ~unnamed1~0~BLACK)) is different from false [2021-12-22 00:11:43,139 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_915 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_915) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) is different from false [2021-12-22 00:11:43,143 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_915 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_915) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)) ~unnamed1~0~BLACK)) is different from false [2021-12-22 00:11:43,150 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_913 (Array Int Int)) (v_ArrVal_912 (Array Int Int)) (v_ArrVal_915 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_913) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_912) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_915) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)) ~unnamed1~0~BLACK)) is different from false [2021-12-22 00:11:43,169 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_913 (Array Int Int)) (v_ArrVal_912 (Array Int Int)) (v_ArrVal_915 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (store (store |c_#memory_int| .cse0 v_ArrVal_913) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_912) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_915)) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) is different from false [2021-12-22 00:11:43,178 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:11:43,178 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 39 [2021-12-22 00:11:43,180 INFO L387 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 70 treesize of output 62 [2021-12-22 00:11:43,187 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2021-12-22 00:11:43,216 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_908 Int) (v_ArrVal_915 (Array Int Int))) (let ((.cse0 (= |c_ULTIMATE.start_main_#t~malloc3#1.base| |c_ULTIMATE.start_main_~end~0#1.base|))) (or (and (not .cse0) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_908)) |c_ULTIMATE.start_main_#t~malloc3#1.base| v_ArrVal_915) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) (and (forall ((v_ArrVal_913 (Array Int Int)) (v_arrayElimCell_29 Int)) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_908)) |c_ULTIMATE.start_main_#t~malloc3#1.base| v_ArrVal_913) v_arrayElimCell_29 v_ArrVal_915) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) .cse0)))) is different from false [2021-12-22 00:11:44,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:11:44,036 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:11:44,037 INFO L387 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 55 [2021-12-22 00:11:44,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:11:44,044 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:11:44,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 114 treesize of output 92 [2021-12-22 00:11:44,048 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 80 [2021-12-22 00:11:44,054 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-12-22 00:11:44,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:44,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417221507] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:11:44,079 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:11:44,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 26 [2021-12-22 00:11:44,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802888522] [2021-12-22 00:11:44,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:11:44,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-22 00:11:44,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:44,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-22 00:11:44,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=305, Unknown=10, NotChecked=246, Total=650 [2021-12-22 00:11:44,081 INFO L87 Difference]: Start difference. First operand 129 states and 137 transitions. Second operand has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 26 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:44,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:44,706 INFO L93 Difference]: Finished difference Result 221 states and 236 transitions. [2021-12-22 00:11:44,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 00:11:44,707 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 26 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-12-22 00:11:44,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:44,709 INFO L225 Difference]: With dead ends: 221 [2021-12-22 00:11:44,709 INFO L226 Difference]: Without dead ends: 221 [2021-12-22 00:11:44,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=691, Unknown=10, NotChecked=378, Total=1332 [2021-12-22 00:11:44,710 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 353 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 850 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:44,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 487 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 584 Invalid, 0 Unknown, 850 Unchecked, 0.3s Time] [2021-12-22 00:11:44,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-12-22 00:11:44,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 155. [2021-12-22 00:11:44,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 133 states have (on average 1.2406015037593985) internal successors, (165), 154 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:44,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2021-12-22 00:11:44,713 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 35 [2021-12-22 00:11:44,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:44,713 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2021-12-22 00:11:44,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 26 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:44,714 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2021-12-22 00:11:44,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-22 00:11:44,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:44,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:44,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 00:11:44,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-22 00:11:44,923 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:44,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:44,924 INFO L85 PathProgramCache]: Analyzing trace with hash 899162440, now seen corresponding path program 1 times [2021-12-22 00:11:44,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:44,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310385502] [2021-12-22 00:11:44,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:44,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:45,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:45,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310385502] [2021-12-22 00:11:45,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310385502] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:11:45,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662386736] [2021-12-22 00:11:45,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:45,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:11:45,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:11:45,088 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 00:11:45,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 00:11:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:45,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-22 00:11:45,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:11:45,221 INFO L387 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 [2021-12-22 00:11:45,292 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-22 00:11:45,293 INFO L387 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 [2021-12-22 00:11:45,334 INFO L387 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 11 treesize of output 7 [2021-12-22 00:11:45,444 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:11:45,445 INFO L387 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 28 treesize of output 29 [2021-12-22 00:11:45,539 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:11:45,540 INFO L387 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 29 [2021-12-22 00:11:45,582 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:11:45,583 INFO L387 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 28 treesize of output 29 [2021-12-22 00:11:45,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:11:45,826 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-22 00:11:45,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:45,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:11:46,255 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:11:46,255 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2021-12-22 00:11:46,262 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:11:46,263 INFO L387 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 252 treesize of output 227 [2021-12-22 00:11:46,267 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 212 treesize of output 204 [2021-12-22 00:11:46,275 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:11:46,275 INFO L387 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 204 treesize of output 196 [2021-12-22 00:11:52,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:52,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662386736] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:11:52,066 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:11:52,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 33 [2021-12-22 00:11:52,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41890652] [2021-12-22 00:11:52,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:11:52,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-22 00:11:52,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:52,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-22 00:11:52,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=936, Unknown=25, NotChecked=0, Total=1122 [2021-12-22 00:11:52,075 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand has 34 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 34 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) [2021-12-22 00:11:52,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:52,525 INFO L93 Difference]: Finished difference Result 231 states and 246 transitions. [2021-12-22 00:11:52,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 00:11:52,526 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 34 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) Word has length 42 [2021-12-22 00:11:52,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:52,526 INFO L225 Difference]: With dead ends: 231 [2021-12-22 00:11:52,526 INFO L226 Difference]: Without dead ends: 231 [2021-12-22 00:11:52,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=281, Invalid=1334, Unknown=25, NotChecked=0, Total=1640 [2021-12-22 00:11:52,527 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 435 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1208 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:52,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 852 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 731 Invalid, 0 Unknown, 1208 Unchecked, 0.3s Time] [2021-12-22 00:11:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-12-22 00:11:52,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 163. [2021-12-22 00:11:52,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 141 states have (on average 1.2411347517730495) internal successors, (175), 162 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:52,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 175 transitions. [2021-12-22 00:11:52,529 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 175 transitions. Word has length 42 [2021-12-22 00:11:52,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:52,529 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 175 transitions. [2021-12-22 00:11:52,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 34 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) [2021-12-22 00:11:52,530 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 175 transitions. [2021-12-22 00:11:52,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-22 00:11:52,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:52,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:52,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 00:11:52,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:11:52,731 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:52,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:52,731 INFO L85 PathProgramCache]: Analyzing trace with hash 899162441, now seen corresponding path program 1 times [2021-12-22 00:11:52,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:52,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200502013] [2021-12-22 00:11:52,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:52,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:52,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:11:52,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200502013] [2021-12-22 00:11:52,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200502013] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:11:52,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901588231] [2021-12-22 00:11:52,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:52,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:11:52,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:11:52,899 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 00:11:52,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 00:11:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:11:52,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-22 00:11:53,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:11:53,008 INFO L387 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 [2021-12-22 00:11:53,051 INFO L387 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 [2021-12-22 00:11:53,056 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:11:53,057 INFO L387 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 [2021-12-22 00:11:53,104 INFO L387 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 11 treesize of output 7 [2021-12-22 00:11:53,108 INFO L387 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 [2021-12-22 00:11:53,187 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:11:53,187 INFO L387 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 38 treesize of output 37 [2021-12-22 00:11:53,192 INFO L387 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 18 treesize of output 20 [2021-12-22 00:11:53,284 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 00:11:53,284 INFO L387 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 14 treesize of output 20 [2021-12-22 00:11:53,289 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-22 00:11:53,300 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:11:53,301 INFO L387 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 29 [2021-12-22 00:11:53,342 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:11:53,342 INFO L387 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 38 treesize of output 37 [2021-12-22 00:11:53,345 INFO L387 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 18 treesize of output 20 [2021-12-22 00:11:53,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:11:53,529 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 00:11:53,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:11:53,535 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:11:53,535 INFO L387 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 16 [2021-12-22 00:11:53,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:53,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:11:54,693 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:11:54,694 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 105 [2021-12-22 00:11:54,699 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:11:54,699 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 81 [2021-12-22 00:11:54,707 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:11:54,708 INFO L387 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 390 treesize of output 353 [2021-12-22 00:11:54,719 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:11:54,720 INFO L387 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 1397 treesize of output 1340 [2021-12-22 00:11:54,748 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1309 treesize of output 1285 [2021-12-22 00:11:54,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1285 treesize of output 1237 [2021-12-22 00:11:54,766 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1237 treesize of output 1189 [2021-12-22 00:11:54,780 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:11:54,780 INFO L387 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 1189 treesize of output 1134 [2021-12-22 00:11:54,789 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1125 treesize of output 1117 [2021-12-22 00:11:54,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1117 treesize of output 1101 [2021-12-22 00:11:54,808 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1101 treesize of output 1089 [2021-12-22 00:11:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:11:58,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901588231] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:11:58,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:11:58,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 35 [2021-12-22 00:11:58,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087515893] [2021-12-22 00:11:58,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:11:58,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-22 00:11:58,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:11:58,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-22 00:11:58,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1125, Unknown=17, NotChecked=0, Total=1260 [2021-12-22 00:11:58,381 INFO L87 Difference]: Start difference. First operand 163 states and 175 transitions. Second operand has 36 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 36 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:59,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:11:59,692 INFO L93 Difference]: Finished difference Result 231 states and 247 transitions. [2021-12-22 00:11:59,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-22 00:11:59,692 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 36 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-12-22 00:11:59,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:11:59,694 INFO L225 Difference]: With dead ends: 231 [2021-12-22 00:11:59,694 INFO L226 Difference]: Without dead ends: 231 [2021-12-22 00:11:59,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=440, Invalid=2623, Unknown=17, NotChecked=0, Total=3080 [2021-12-22 00:11:59,695 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 573 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 644 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 00:11:59,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 770 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 917 Invalid, 0 Unknown, 644 Unchecked, 0.4s Time] [2021-12-22 00:11:59,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-12-22 00:11:59,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 166. [2021-12-22 00:11:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 144 states have (on average 1.2361111111111112) internal successors, (178), 165 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:59,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 178 transitions. [2021-12-22 00:11:59,700 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 178 transitions. Word has length 42 [2021-12-22 00:11:59,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:11:59,700 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 178 transitions. [2021-12-22 00:11:59,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 36 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:11:59,700 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 178 transitions. [2021-12-22 00:11:59,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-22 00:11:59,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:11:59,701 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:11:59,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-22 00:11:59,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:11:59,927 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:11:59,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:11:59,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1421280140, now seen corresponding path program 1 times [2021-12-22 00:11:59,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:11:59,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541561733] [2021-12-22 00:11:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:11:59,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:11:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:12:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:12:00,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:12:00,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541561733] [2021-12-22 00:12:00,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541561733] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:12:00,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907332498] [2021-12-22 00:12:00,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:12:00,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:12:00,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:12:00,322 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 00:12:00,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 00:12:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:12:00,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-22 00:12:00,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:12:00,450 INFO L387 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 [2021-12-22 00:12:00,460 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 00:12:00,514 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:12:00,514 INFO L387 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 [2021-12-22 00:12:00,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:12:00,540 INFO L387 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 [2021-12-22 00:12:00,547 INFO L387 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 11 treesize of output 7 [2021-12-22 00:12:00,656 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:12:00,656 INFO L387 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 29 treesize of output 30 [2021-12-22 00:12:00,659 INFO L387 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 20 treesize of output 22 [2021-12-22 00:12:00,677 INFO L387 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 16 treesize of output 8 [2021-12-22 00:12:00,692 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-22 00:12:00,715 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-22 00:12:00,730 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-22 00:12:00,731 INFO L387 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 [2021-12-22 00:12:00,741 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-22 00:12:00,745 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2021-12-22 00:12:00,824 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:12:00,824 INFO L387 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-12-22 00:12:00,826 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-22 00:12:00,846 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-12-22 00:12:00,855 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-22 00:12:00,865 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-22 00:12:00,919 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 00:12:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:12:00,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:12:00,949 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1280 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1280) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) is different from false [2021-12-22 00:12:00,994 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1280 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem9#1.base| v_ArrVal_1280) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) is different from false [2021-12-22 00:12:00,998 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1280 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1280) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)) ~unnamed1~0~BLACK)) is different from false [2021-12-22 00:12:01,004 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1280 (Array Int Int)) (v_ArrVal_1278 (Array Int Int)) (v_ArrVal_1277 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_1278) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_1277) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1280) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)) ~unnamed1~0~BLACK)) is different from false [2021-12-22 00:12:01,008 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1280 (Array Int Int)) (v_ArrVal_1278 (Array Int Int)) (v_ArrVal_1277 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (store (store |c_#memory_int| .cse0 v_ArrVal_1278) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1277) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1280)) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) is different from false [2021-12-22 00:12:01,017 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:01,017 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2021-12-22 00:12:01,019 INFO L387 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 60 treesize of output 52 [2021-12-22 00:12:01,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2021-12-22 00:12:01,044 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1280 (Array Int Int)) (v_ArrVal_1274 (Array Int Int))) (let ((.cse0 (= |c_ULTIMATE.start_main_#t~malloc7#1.base| |c_ULTIMATE.start_main_~end~0#1.base|))) (or (and .cse0 (forall ((v_ArrVal_1278 (Array Int Int)) (v_arrayElimCell_88 Int)) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1274) |c_ULTIMATE.start_main_#t~malloc7#1.base| v_ArrVal_1278) v_arrayElimCell_88 v_ArrVal_1280) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)) ~unnamed1~0~BLACK))) (and (not .cse0) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1274) |c_ULTIMATE.start_main_#t~malloc7#1.base| v_ArrVal_1280) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))))))) is different from false [2021-12-22 00:12:01,781 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:01,782 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2021-12-22 00:12:01,790 INFO L387 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 104 treesize of output 92 [2021-12-22 00:12:01,805 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 53 [2021-12-22 00:12:01,855 INFO L353 Elim1Store]: treesize reduction 14, result has 71.4 percent of original size [2021-12-22 00:12:01,855 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 61 [2021-12-22 00:12:02,619 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1280 (Array Int Int)) (v_arrayElimCell_90 Int) (|v_ULTIMATE.start_main_#t~malloc7#1.base_11| Int) (v_ArrVal_1269 Int) (v_ArrVal_1274 (Array Int Int))) (let ((.cse0 (= |c_ULTIMATE.start_main_#t~malloc3#1.base| |c_ULTIMATE.start_main_~end~0#1.base|))) (or (= |v_ULTIMATE.start_main_#t~malloc7#1.base_11| |c_ULTIMATE.start_main_#t~malloc3#1.base|) (= |v_ULTIMATE.start_main_#t~malloc7#1.base_11| |c_ULTIMATE.start_main_~end~0#1.base|) (and .cse0 (forall ((v_ArrVal_1270 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1269)) |c_ULTIMATE.start_main_#t~malloc3#1.base| v_ArrVal_1270) v_arrayElimCell_90 v_ArrVal_1274) |v_ULTIMATE.start_main_#t~malloc7#1.base_11| v_ArrVal_1280) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))))) (and .cse0 (= |v_ULTIMATE.start_main_#t~malloc7#1.base_11| v_arrayElimCell_90)) (and (not .cse0) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1269)) |c_ULTIMATE.start_main_#t~malloc3#1.base| v_ArrVal_1274) |v_ULTIMATE.start_main_#t~malloc7#1.base_11| v_ArrVal_1280) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))))))) is different from false [2021-12-22 00:12:08,430 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.offset_93| Int) (v_ArrVal_1280 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc3#1.base_17| Int) (v_arrayElimCell_90 Int) (|v_ULTIMATE.start_main_#t~malloc7#1.base_11| Int) (v_ArrVal_1269 Int) (v_ArrVal_1274 (Array Int Int))) (let ((.cse0 (= |c_ULTIMATE.start_main_~list~0#1.base| |v_ULTIMATE.start_main_#t~malloc3#1.base_17|))) (or (= |v_ULTIMATE.start_main_#t~malloc7#1.base_11| |c_ULTIMATE.start_main_~list~0#1.base|) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc3#1.base_17|) 0)) (and (= |v_ULTIMATE.start_main_#t~malloc7#1.base_11| v_arrayElimCell_90) .cse0) (and (forall ((v_ArrVal_1270 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_93| v_ArrVal_1269)) |v_ULTIMATE.start_main_#t~malloc3#1.base_17| v_ArrVal_1270) v_arrayElimCell_90 v_ArrVal_1274) |v_ULTIMATE.start_main_#t~malloc7#1.base_11| v_ArrVal_1280) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) .cse0) (= |v_ULTIMATE.start_main_#t~malloc7#1.base_11| |v_ULTIMATE.start_main_#t~malloc3#1.base_17|) (not (<= |v_ULTIMATE.start_main_~end~0#1.offset_93| |c_ULTIMATE.start_main_~list~0#1.offset|)) (and (not .cse0) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_93| v_ArrVal_1269)) |v_ULTIMATE.start_main_#t~malloc3#1.base_17| v_ArrVal_1274) |v_ULTIMATE.start_main_#t~malloc7#1.base_11| v_ArrVal_1280) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))))))) is different from false [2021-12-22 00:12:08,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:12:08,450 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:08,450 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 61 [2021-12-22 00:12:08,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:12:08,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:12:08,456 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 92 [2021-12-22 00:12:08,460 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 80 [2021-12-22 00:12:08,465 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-12-22 00:12:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:12:08,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907332498] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:12:08,497 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:12:08,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 22] total 46 [2021-12-22 00:12:08,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798182848] [2021-12-22 00:12:08,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:12:08,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-22 00:12:08,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:12:08,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-22 00:12:08,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1173, Unknown=24, NotChecked=632, Total=2070 [2021-12-22 00:12:08,499 INFO L87 Difference]: Start difference. First operand 166 states and 178 transitions. Second operand has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:12:09,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:12:09,330 INFO L93 Difference]: Finished difference Result 425 states and 457 transitions. [2021-12-22 00:12:09,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-22 00:12:09,330 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 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 45 [2021-12-22 00:12:09,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:12:09,331 INFO L225 Difference]: With dead ends: 425 [2021-12-22 00:12:09,332 INFO L226 Difference]: Without dead ends: 425 [2021-12-22 00:12:09,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 69 SyntacticMatches, 8 SemanticMatches, 60 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=503, Invalid=2367, Unknown=24, NotChecked=888, Total=3782 [2021-12-22 00:12:09,333 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 710 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 3910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3000 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 00:12:09,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 911 Invalid, 3910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 783 Invalid, 0 Unknown, 3000 Unchecked, 0.4s Time] [2021-12-22 00:12:09,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-12-22 00:12:09,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 192. [2021-12-22 00:12:09,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 170 states have (on average 1.2058823529411764) internal successors, (205), 191 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:12:09,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 205 transitions. [2021-12-22 00:12:09,338 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 205 transitions. Word has length 45 [2021-12-22 00:12:09,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:12:09,339 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 205 transitions. [2021-12-22 00:12:09,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:12:09,339 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 205 transitions. [2021-12-22 00:12:09,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-22 00:12:09,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:12:09,339 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:12:09,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-22 00:12:09,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-22 00:12:09,556 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:12:09,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:12:09,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1605357382, now seen corresponding path program 2 times [2021-12-22 00:12:09,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:12:09,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014912409] [2021-12-22 00:12:09,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:12:09,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:12:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:12:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:12:09,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:12:09,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014912409] [2021-12-22 00:12:09,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014912409] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:12:09,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676627074] [2021-12-22 00:12:09,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 00:12:09,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:12:09,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:12:09,769 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 00:12:09,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-22 00:12:09,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 00:12:09,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 00:12:09,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-22 00:12:09,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:12:10,017 INFO L353 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-12-22 00:12:10,018 INFO L387 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 19 treesize of output 26 [2021-12-22 00:12:10,034 INFO L353 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-12-22 00:12:10,035 INFO L387 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 19 treesize of output 26 [2021-12-22 00:12:10,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:12:10,124 INFO L387 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 29 treesize of output 28 [2021-12-22 00:12:10,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:12:10,131 INFO L387 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 29 treesize of output 28 [2021-12-22 00:12:10,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:12:10,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:12:10,865 INFO L353 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-12-22 00:12:10,866 INFO L387 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 5 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 64 [2021-12-22 00:12:10,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:12:10,874 INFO L353 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2021-12-22 00:12:10,875 INFO L387 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 56 treesize of output 40 [2021-12-22 00:12:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:12:10,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:12:16,213 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:16,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 3127 treesize of output 2863 [2021-12-22 00:12:16,318 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:16,319 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 10023 treesize of output 8705 [2021-12-22 00:12:16,479 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-22 00:12:16,479 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-22 00:12:16,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-12-22 00:12:16,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971122368] [2021-12-22 00:12:16,479 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-22 00:12:16,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-22 00:12:16,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:12:16,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-22 00:12:16,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1287, Unknown=1, NotChecked=0, Total=1406 [2021-12-22 00:12:16,481 INFO L87 Difference]: Start difference. First operand 192 states and 205 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:12:17,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:12:17,277 INFO L93 Difference]: Finished difference Result 251 states and 268 transitions. [2021-12-22 00:12:17,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-22 00:12:17,277 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-12-22 00:12:17,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:12:17,278 INFO L225 Difference]: With dead ends: 251 [2021-12-22 00:12:17,278 INFO L226 Difference]: Without dead ends: 251 [2021-12-22 00:12:17,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=268, Invalid=2701, Unknown=1, NotChecked=0, Total=2970 [2021-12-22 00:12:17,279 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 369 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 00:12:17,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 559 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 00:12:17,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-12-22 00:12:17,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 194. [2021-12-22 00:12:17,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 172 states have (on average 1.2034883720930232) internal successors, (207), 193 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:12:17,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 207 transitions. [2021-12-22 00:12:17,282 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 207 transitions. Word has length 47 [2021-12-22 00:12:17,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:12:17,282 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 207 transitions. [2021-12-22 00:12:17,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:12:17,282 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 207 transitions. [2021-12-22 00:12:17,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-22 00:12:17,282 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:12:17,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:12:17,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-22 00:12:17,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-22 00:12:17,488 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:12:17,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:12:17,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1563339129, now seen corresponding path program 1 times [2021-12-22 00:12:17,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:12:17,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781028926] [2021-12-22 00:12:17,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:12:17,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:12:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:12:17,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:12:17,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:12:17,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781028926] [2021-12-22 00:12:17,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781028926] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:12:17,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356508820] [2021-12-22 00:12:17,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:12:17,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:12:17,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:12:17,883 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 00:12:17,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-22 00:12:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:12:17,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-22 00:12:18,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:12:18,005 INFO L387 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 [2021-12-22 00:12:18,040 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:12:18,041 INFO L387 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 [2021-12-22 00:12:18,053 INFO L387 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 [2021-12-22 00:12:18,057 INFO L387 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 11 treesize of output 7 [2021-12-22 00:12:18,108 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:12:18,109 INFO L387 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 29 treesize of output 30 [2021-12-22 00:12:18,112 INFO L387 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 18 treesize of output 20 [2021-12-22 00:12:18,175 INFO L387 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 14 treesize of output 16 [2021-12-22 00:12:18,180 INFO L387 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 14 treesize of output 16 [2021-12-22 00:12:18,220 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:12:18,221 INFO L387 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 48 treesize of output 45 [2021-12-22 00:12:18,224 INFO L387 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 18 treesize of output 20 [2021-12-22 00:12:18,226 INFO L387 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 19 treesize of output 11 [2021-12-22 00:12:18,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:12:18,427 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 00:12:18,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:12:18,431 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:18,431 INFO L387 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 27 treesize of output 18 [2021-12-22 00:12:18,473 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 00:12:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:12:18,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:12:18,697 INFO L387 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 82 treesize of output 62 [2021-12-22 00:12:19,349 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:19,349 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 111 [2021-12-22 00:12:19,353 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:19,353 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 87 [2021-12-22 00:12:19,359 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:19,360 INFO L387 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 493 treesize of output 424 [2021-12-22 00:12:19,368 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:19,369 INFO L387 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 743 treesize of output 698 [2021-12-22 00:12:19,378 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:19,379 INFO L387 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 698 treesize of output 680 [2021-12-22 00:12:19,402 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 623 treesize of output 607 [2021-12-22 00:12:19,408 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 607 treesize of output 591 [2021-12-22 00:12:19,418 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:19,418 INFO L387 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 591 treesize of output 564 [2021-12-22 00:12:19,425 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 555 treesize of output 539 [2021-12-22 00:12:20,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:12:20,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356508820] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:12:20,914 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:12:20,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 14, 16] total 43 [2021-12-22 00:12:20,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250613981] [2021-12-22 00:12:20,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:12:20,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-22 00:12:20,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:12:20,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-22 00:12:20,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1632, Unknown=32, NotChecked=0, Total=1806 [2021-12-22 00:12:20,916 INFO L87 Difference]: Start difference. First operand 194 states and 207 transitions. Second operand has 43 states, 43 states have (on average 2.7674418604651163) internal successors, (119), 43 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:12:21,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:12:21,814 INFO L93 Difference]: Finished difference Result 229 states and 243 transitions. [2021-12-22 00:12:21,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-22 00:12:21,815 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.7674418604651163) internal successors, (119), 43 states have internal predecessors, (119), 0 states have call successors, (0), 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 47 [2021-12-22 00:12:21,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:12:21,816 INFO L225 Difference]: With dead ends: 229 [2021-12-22 00:12:21,816 INFO L226 Difference]: Without dead ends: 229 [2021-12-22 00:12:21,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 74 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=392, Invalid=3116, Unknown=32, NotChecked=0, Total=3540 [2021-12-22 00:12:21,821 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 421 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 2506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 812 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 00:12:21,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 1297 Invalid, 2506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1605 Invalid, 0 Unknown, 812 Unchecked, 0.5s Time] [2021-12-22 00:12:21,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-22 00:12:21,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 193. [2021-12-22 00:12:21,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 171 states have (on average 1.1988304093567252) internal successors, (205), 192 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:12:21,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 205 transitions. [2021-12-22 00:12:21,833 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 205 transitions. Word has length 47 [2021-12-22 00:12:21,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:12:21,833 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 205 transitions. [2021-12-22 00:12:21,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.7674418604651163) internal successors, (119), 43 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:12:21,833 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 205 transitions. [2021-12-22 00:12:21,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-22 00:12:21,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:12:21,834 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:12:21,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-22 00:12:22,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-22 00:12:22,054 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:12:22,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:12:22,054 INFO L85 PathProgramCache]: Analyzing trace with hash 334775830, now seen corresponding path program 1 times [2021-12-22 00:12:22,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:12:22,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045732545] [2021-12-22 00:12:22,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:12:22,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:12:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:12:22,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:12:22,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:12:22,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045732545] [2021-12-22 00:12:22,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045732545] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:12:22,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727192155] [2021-12-22 00:12:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:12:22,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:12:22,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:12:22,236 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 00:12:22,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-22 00:12:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:12:22,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-22 00:12:22,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:12:22,511 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 00:12:22,511 INFO L387 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-22 00:12:22,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-22 00:12:22,547 INFO L353 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-12-22 00:12:22,548 INFO L387 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 1 case distinctions, treesize of input 19 treesize of output 26 [2021-12-22 00:12:22,634 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 00:12:22,634 INFO L387 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 1 case distinctions, treesize of input 18 treesize of output 24 [2021-12-22 00:12:22,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:12:22,638 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-22 00:12:22,824 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-22 00:12:22,828 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-22 00:12:22,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:12:22,931 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-22 00:12:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:12:22,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:12:23,144 INFO L353 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-22 00:12:23,144 INFO L387 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 21 treesize of output 16 [2021-12-22 00:12:23,288 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1585 Int) (v_ArrVal_1584 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.offset_110| Int)) (or (not (<= |v_ULTIMATE.start_main_~end~0#1.offset_110| |c_ULTIMATE.start_main_~list~0#1.offset|)) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) (+ |c_ULTIMATE.start_main_~end~0#1.offset| 8) v_ArrVal_1585)) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_110|) 0)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1584) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_110|) 0)) (= |c_ULTIMATE.start_main_~list~0#1.offset| |v_ULTIMATE.start_main_~end~0#1.offset_110|) (not (<= 0 |v_ULTIMATE.start_main_~end~0#1.offset_110|)))) is different from false [2021-12-22 00:12:23,402 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:23,402 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 146 treesize of output 125 [2021-12-22 00:12:23,412 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:23,413 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 135 treesize of output 114 [2021-12-22 00:12:23,416 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-22 00:12:23,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:12:23,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727192155] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:12:23,500 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:12:23,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 36 [2021-12-22 00:12:23,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884145739] [2021-12-22 00:12:23,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:12:23,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-22 00:12:23,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:12:23,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-22 00:12:23,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1035, Unknown=1, NotChecked=66, Total=1260 [2021-12-22 00:12:23,502 INFO L87 Difference]: Start difference. First operand 193 states and 205 transitions. Second operand has 36 states, 36 states have (on average 3.7777777777777777) internal successors, (136), 36 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) [2021-12-22 00:12:24,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:12:24,694 INFO L93 Difference]: Finished difference Result 285 states and 305 transitions. [2021-12-22 00:12:24,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-22 00:12:24,694 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.7777777777777777) internal successors, (136), 36 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) Word has length 50 [2021-12-22 00:12:24,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:12:24,695 INFO L225 Difference]: With dead ends: 285 [2021-12-22 00:12:24,695 INFO L226 Difference]: Without dead ends: 285 [2021-12-22 00:12:24,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 85 SyntacticMatches, 9 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1055, Invalid=4060, Unknown=1, NotChecked=140, Total=5256 [2021-12-22 00:12:24,697 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 672 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 362 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 00:12:24,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 843 Invalid, 1788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1237 Invalid, 0 Unknown, 362 Unchecked, 0.4s Time] [2021-12-22 00:12:24,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-12-22 00:12:24,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 245. [2021-12-22 00:12:24,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 223 states have (on average 1.1838565022421526) internal successors, (264), 244 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:12:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 264 transitions. [2021-12-22 00:12:24,701 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 264 transitions. Word has length 50 [2021-12-22 00:12:24,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:12:24,701 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 264 transitions. [2021-12-22 00:12:24,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.7777777777777777) internal successors, (136), 36 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) [2021-12-22 00:12:24,702 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 264 transitions. [2021-12-22 00:12:24,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 00:12:24,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:12:24,702 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:12:24,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-22 00:12:24,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:12:24,917 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-12-22 00:12:24,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:12:24,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1149873379, now seen corresponding path program 1 times [2021-12-22 00:12:24,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:12:24,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261746334] [2021-12-22 00:12:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:12:24,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:12:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:12:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:12:25,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:12:25,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261746334] [2021-12-22 00:12:25,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261746334] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:12:25,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586332314] [2021-12-22 00:12:25,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:12:25,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:12:25,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:12:25,366 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 00:12:25,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-22 00:12:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:12:25,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-22 00:12:25,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:12:25,503 INFO L387 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 [2021-12-22 00:12:25,546 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:12:25,546 INFO L387 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 [2021-12-22 00:12:25,560 INFO L387 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 11 treesize of output 7 [2021-12-22 00:12:25,607 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:12:25,607 INFO L387 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 19 treesize of output 22 [2021-12-22 00:12:25,656 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:12:25,657 INFO L387 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 22 treesize of output 22 [2021-12-22 00:12:25,693 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:12:25,693 INFO L387 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 22 treesize of output 22 [2021-12-22 00:12:25,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:12:25,705 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-22 00:12:25,705 INFO L387 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 [2021-12-22 00:12:25,731 INFO L353 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-22 00:12:25,732 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2021-12-22 00:12:25,799 INFO L353 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-22 00:12:25,799 INFO L387 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 42 treesize of output 44 [2021-12-22 00:12:25,879 INFO L353 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-22 00:12:25,880 INFO L387 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 63 treesize of output 53 [2021-12-22 00:12:25,896 INFO L353 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-22 00:12:25,896 INFO L387 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 53 [2021-12-22 00:12:26,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:12:26,156 INFO L353 Elim1Store]: treesize reduction 25, result has 10.7 percent of original size [2021-12-22 00:12:26,157 INFO L387 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 53 treesize of output 27 [2021-12-22 00:12:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:12:26,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:12:26,625 INFO L353 Elim1Store]: treesize reduction 5, result has 87.8 percent of original size [2021-12-22 00:12:26,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2021-12-22 00:12:26,633 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~end~0#1.offset| Int) (v_ArrVal_1740 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.offset_116| Int) (v_ArrVal_1738 (Array Int Int))) (or (not (<= 0 |v_ULTIMATE.start_main_~end~0#1.offset_116|)) (not (<= |v_ULTIMATE.start_main_~end~0#1.offset_116| |c_ULTIMATE.start_main_~list~0#1.offset|)) (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |ULTIMATE.start_main_~end~0#1.offset| |c_ULTIMATE.start_main_#t~malloc7#1.base|)) |c_ULTIMATE.start_main_#t~malloc7#1.base| v_ArrVal_1738))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~end~0#1.base|) |ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1740)) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_116|) |c_ULTIMATE.start_main_~end~0#1.base|))) is different from false [2021-12-22 00:12:26,711 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:26,711 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2021-12-22 00:12:26,740 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_11 (Array Int Int)) (|ULTIMATE.start_main_~end~0#1.offset| Int) (v_ArrVal_1740 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.offset_116| Int) (v_ArrVal_1738 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_11 |ULTIMATE.start_main_~end~0#1.offset|))) (or (not (<= 0 |v_ULTIMATE.start_main_~end~0#1.offset_116|)) (not (= (select |c_#valid| .cse0) 0)) (not (<= |v_ULTIMATE.start_main_~end~0#1.offset_116| |c_ULTIMATE.start_main_~list~0#1.offset|)) (= |c_ULTIMATE.start_main_~end~0#1.base| (select (select (let ((.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_11) .cse0 v_ArrVal_1738))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~end~0#1.base|) |ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1740)) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_116|))))) is different from false [2021-12-22 00:12:27,123 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:27,123 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 86 [2021-12-22 00:12:27,133 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:27,134 INFO L387 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 7928 treesize of output 7307 [2021-12-22 00:12:27,209 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:27,210 INFO L387 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 7276 treesize of output 6050 [2021-12-22 00:12:27,239 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:27,240 INFO L387 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 6036 treesize of output 5624 [2021-12-22 00:12:27,270 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:12:27,270 INFO L387 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 5640 treesize of output 4814 [2021-12-22 00:12:27,296 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4784 treesize of output 4592 [2021-12-22 00:12:27,355 INFO L353 Elim1Store]: treesize reduction 14, result has 71.4 percent of original size [2021-12-22 00:12:27,355 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 61