/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:41:45,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:41:45,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:41:45,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:41:45,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:41:45,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:41:45,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:41:45,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:41:45,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:41:45,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:41:45,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:41:45,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:41:45,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:41:45,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:41:45,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:41:45,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:41:45,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:41:45,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:41:45,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:41:45,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:41:45,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:41:45,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:41:45,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:41:45,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:41:45,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 08:41:45,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 08:41:45,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 08:41:45,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 08:41:45,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 08:41:45,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 08:41:45,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:41:45,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:41:45,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:41:45,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:41:45,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:41:45,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:41:45,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:41:45,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:41:45,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:41:45,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:41:45,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:41:45,795 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:41:45,864 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:41:45,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:41:45,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:41:45,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:41:45,874 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:41:45,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:41:45,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:41:45,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:41:45,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:41:45,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:41:45,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:41:45,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:41:45,878 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:41:45,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:41:45,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:41:45,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:41:45,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:41:45,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:41:45,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:41:45,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:41:45,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:41:45,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:41:45,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:41:45,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:41:45,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:41:45,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:41:46,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:41:46,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:41:46,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:41:46,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:41:46,570 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:41:46,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-12-22 08:41:46,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbfd5a98e/bbe38a8d5dd141a3925ba52c0512df03/FLAGed4550d18 [2020-12-22 08:41:48,042 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:41:48,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-12-22 08:41:48,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbfd5a98e/bbe38a8d5dd141a3925ba52c0512df03/FLAGed4550d18 [2020-12-22 08:41:48,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbfd5a98e/bbe38a8d5dd141a3925ba52c0512df03 [2020-12-22 08:41:48,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:41:48,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:41:48,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:41:48,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:41:48,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:41:48,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:41:48" (1/1) ... [2020-12-22 08:41:48,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6855c684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:48, skipping insertion in model container [2020-12-22 08:41:48,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:41:48" (1/1) ... [2020-12-22 08:41:48,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:41:48,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:41:49,141 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16544,16557] [2020-12-22 08:41:49,294 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[22968,22981] [2020-12-22 08:41:49,331 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26155,26168] [2020-12-22 08:41:49,351 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[29131,29144] [2020-12-22 08:41:49,375 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[32894,32907] [2020-12-22 08:41:49,393 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[35946,35959] [2020-12-22 08:41:49,412 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[39131,39144] [2020-12-22 08:41:49,432 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42102,42115] [2020-12-22 08:41:49,465 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[45486,45499] [2020-12-22 08:41:49,484 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[48472,48485] [2020-12-22 08:41:49,503 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[51621,51634] [2020-12-22 08:41:49,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:41:49,591 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:41:49,754 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16544,16557] [2020-12-22 08:41:49,789 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[22968,22981] [2020-12-22 08:41:49,807 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26155,26168] [2020-12-22 08:41:49,823 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[29131,29144] [2020-12-22 08:41:49,857 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[32894,32907] [2020-12-22 08:41:49,891 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[35946,35959] [2020-12-22 08:41:49,916 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[39131,39144] [2020-12-22 08:41:49,931 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42102,42115] [2020-12-22 08:41:49,948 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[45486,45499] [2020-12-22 08:41:49,963 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[48472,48485] [2020-12-22 08:41:49,980 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[51621,51634] [2020-12-22 08:41:50,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:41:50,079 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:41:50,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:50 WrapperNode [2020-12-22 08:41:50,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:41:50,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:41:50,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:41:50,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:41:50,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:50" (1/1) ... [2020-12-22 08:41:50,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:50" (1/1) ... [2020-12-22 08:41:50,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:41:50,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:41:50,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:41:50,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:41:50,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:50" (1/1) ... [2020-12-22 08:41:50,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:50" (1/1) ... [2020-12-22 08:41:50,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:50" (1/1) ... [2020-12-22 08:41:50,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:50" (1/1) ... [2020-12-22 08:41:50,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:50" (1/1) ... [2020-12-22 08:41:50,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:50" (1/1) ... [2020-12-22 08:41:50,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:50" (1/1) ... [2020-12-22 08:41:50,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:41:50,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:41:50,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:41:50,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:41:50,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:41:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:41:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:41:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:41:50,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:41:53,657 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:41:53,658 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:41:53,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:41:53 BoogieIcfgContainer [2020-12-22 08:41:53,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:41:53,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:41:53,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:41:53,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:41:53,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:41:48" (1/3) ... [2020-12-22 08:41:53,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5529706e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:41:53, skipping insertion in model container [2020-12-22 08:41:53,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:50" (2/3) ... [2020-12-22 08:41:53,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5529706e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:41:53, skipping insertion in model container [2020-12-22 08:41:53,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:41:53" (3/3) ... [2020-12-22 08:41:53,677 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-12-22 08:41:53,688 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:41:53,697 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 08:41:53,728 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 08:41:53,775 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:41:53,775 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:41:53,776 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:41:53,776 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:41:53,776 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:41:53,776 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:41:53,776 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:41:53,776 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:41:53,818 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states. [2020-12-22 08:41:53,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 08:41:53,848 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:53,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:41:53,853 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:53,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:53,865 INFO L82 PathProgramCache]: Analyzing trace with hash 702631990, now seen corresponding path program 1 times [2020-12-22 08:41:53,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:53,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346151447] [2020-12-22 08:41:53,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:54,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346151447] [2020-12-22 08:41:54,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:54,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:41:54,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650546026] [2020-12-22 08:41:54,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:41:54,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:54,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:41:54,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:41:54,601 INFO L87 Difference]: Start difference. First operand 537 states. Second operand 6 states. [2020-12-22 08:41:55,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:55,608 INFO L93 Difference]: Finished difference Result 845 states and 1447 transitions. [2020-12-22 08:41:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:41:55,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-12-22 08:41:55,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:55,640 INFO L225 Difference]: With dead ends: 845 [2020-12-22 08:41:55,641 INFO L226 Difference]: Without dead ends: 575 [2020-12-22 08:41:55,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:41:55,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-12-22 08:41:55,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 535. [2020-12-22 08:41:55,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2020-12-22 08:41:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 691 transitions. [2020-12-22 08:41:55,842 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 691 transitions. Word has length 59 [2020-12-22 08:41:55,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:55,843 INFO L481 AbstractCegarLoop]: Abstraction has 535 states and 691 transitions. [2020-12-22 08:41:55,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:41:55,843 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 691 transitions. [2020-12-22 08:41:55,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 08:41:55,863 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:55,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:41:55,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:41:55,865 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:55,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:55,870 INFO L82 PathProgramCache]: Analyzing trace with hash 728409025, now seen corresponding path program 1 times [2020-12-22 08:41:55,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:55,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478099013] [2020-12-22 08:41:55,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:56,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:56,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478099013] [2020-12-22 08:41:56,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:56,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:41:56,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187184080] [2020-12-22 08:41:56,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:41:56,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:56,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:41:56,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:41:56,151 INFO L87 Difference]: Start difference. First operand 535 states and 691 transitions. Second operand 5 states. [2020-12-22 08:41:56,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:56,745 INFO L93 Difference]: Finished difference Result 684 states and 894 transitions. [2020-12-22 08:41:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:41:56,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-12-22 08:41:56,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:56,755 INFO L225 Difference]: With dead ends: 684 [2020-12-22 08:41:56,755 INFO L226 Difference]: Without dead ends: 395 [2020-12-22 08:41:56,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:41:56,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-12-22 08:41:56,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2020-12-22 08:41:56,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-12-22 08:41:56,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 509 transitions. [2020-12-22 08:41:56,823 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 509 transitions. Word has length 59 [2020-12-22 08:41:56,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:56,824 INFO L481 AbstractCegarLoop]: Abstraction has 395 states and 509 transitions. [2020-12-22 08:41:56,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:41:56,824 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 509 transitions. [2020-12-22 08:41:56,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 08:41:56,830 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:56,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:41:56,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:41:56,837 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:56,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:56,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1972446629, now seen corresponding path program 1 times [2020-12-22 08:41:56,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:56,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494786209] [2020-12-22 08:41:56,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:57,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494786209] [2020-12-22 08:41:57,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:57,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:41:57,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978198452] [2020-12-22 08:41:57,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:41:57,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:57,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:41:57,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:41:57,021 INFO L87 Difference]: Start difference. First operand 395 states and 509 transitions. Second operand 5 states. [2020-12-22 08:41:57,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:57,733 INFO L93 Difference]: Finished difference Result 795 states and 1058 transitions. [2020-12-22 08:41:57,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:41:57,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-12-22 08:41:57,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:57,739 INFO L225 Difference]: With dead ends: 795 [2020-12-22 08:41:57,740 INFO L226 Difference]: Without dead ends: 552 [2020-12-22 08:41:57,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:41:57,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2020-12-22 08:41:57,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 508. [2020-12-22 08:41:57,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-12-22 08:41:57,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 692 transitions. [2020-12-22 08:41:57,805 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 692 transitions. Word has length 59 [2020-12-22 08:41:57,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:57,808 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 692 transitions. [2020-12-22 08:41:57,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:41:57,808 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 692 transitions. [2020-12-22 08:41:57,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 08:41:57,814 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:57,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:41:57,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:41:57,816 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:57,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:57,818 INFO L82 PathProgramCache]: Analyzing trace with hash -543197070, now seen corresponding path program 1 times [2020-12-22 08:41:57,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:57,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720265142] [2020-12-22 08:41:57,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:58,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720265142] [2020-12-22 08:41:58,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:58,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:41:58,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801115739] [2020-12-22 08:41:58,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:41:58,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:58,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:41:58,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:41:58,086 INFO L87 Difference]: Start difference. First operand 508 states and 692 transitions. Second operand 5 states. [2020-12-22 08:41:58,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:58,414 INFO L93 Difference]: Finished difference Result 806 states and 1113 transitions. [2020-12-22 08:41:58,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:41:58,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-12-22 08:41:58,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:58,419 INFO L225 Difference]: With dead ends: 806 [2020-12-22 08:41:58,420 INFO L226 Difference]: Without dead ends: 460 [2020-12-22 08:41:58,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:41:58,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-12-22 08:41:58,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2020-12-22 08:41:58,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-12-22 08:41:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 627 transitions. [2020-12-22 08:41:58,466 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 627 transitions. Word has length 60 [2020-12-22 08:41:58,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:58,467 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 627 transitions. [2020-12-22 08:41:58,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:41:58,467 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 627 transitions. [2020-12-22 08:41:58,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:41:58,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:58,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:41:58,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:41:58,470 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:58,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:58,471 INFO L82 PathProgramCache]: Analyzing trace with hash -944801897, now seen corresponding path program 1 times [2020-12-22 08:41:58,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:58,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686026113] [2020-12-22 08:41:58,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:58,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686026113] [2020-12-22 08:41:58,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:58,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:41:58,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513559720] [2020-12-22 08:41:58,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:41:58,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:58,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:41:58,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:41:58,800 INFO L87 Difference]: Start difference. First operand 460 states and 627 transitions. Second operand 9 states. [2020-12-22 08:42:00,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:00,126 INFO L93 Difference]: Finished difference Result 1439 states and 2070 transitions. [2020-12-22 08:42:00,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:42:00,127 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-12-22 08:42:00,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:00,139 INFO L225 Difference]: With dead ends: 1439 [2020-12-22 08:42:00,140 INFO L226 Difference]: Without dead ends: 1219 [2020-12-22 08:42:00,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:42:00,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2020-12-22 08:42:00,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 460. [2020-12-22 08:42:00,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-12-22 08:42:00,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 626 transitions. [2020-12-22 08:42:00,253 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 626 transitions. Word has length 61 [2020-12-22 08:42:00,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:00,254 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 626 transitions. [2020-12-22 08:42:00,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:42:00,254 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 626 transitions. [2020-12-22 08:42:00,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:42:00,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:00,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:00,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:42:00,257 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:00,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:00,258 INFO L82 PathProgramCache]: Analyzing trace with hash 448084895, now seen corresponding path program 1 times [2020-12-22 08:42:00,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:00,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31795798] [2020-12-22 08:42:00,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:00,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31795798] [2020-12-22 08:42:00,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:00,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:42:00,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854386630] [2020-12-22 08:42:00,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:42:00,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:00,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:42:00,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:42:00,547 INFO L87 Difference]: Start difference. First operand 460 states and 626 transitions. Second operand 9 states. [2020-12-22 08:42:02,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:02,203 INFO L93 Difference]: Finished difference Result 1440 states and 2065 transitions. [2020-12-22 08:42:02,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:42:02,206 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-12-22 08:42:02,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:02,220 INFO L225 Difference]: With dead ends: 1440 [2020-12-22 08:42:02,220 INFO L226 Difference]: Without dead ends: 1194 [2020-12-22 08:42:02,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:42:02,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-12-22 08:42:02,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 460. [2020-12-22 08:42:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-12-22 08:42:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 625 transitions. [2020-12-22 08:42:02,306 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 625 transitions. Word has length 61 [2020-12-22 08:42:02,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:02,307 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 625 transitions. [2020-12-22 08:42:02,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:42:02,307 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 625 transitions. [2020-12-22 08:42:02,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:42:02,308 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:02,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:02,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:42:02,309 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:02,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:02,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1014019097, now seen corresponding path program 1 times [2020-12-22 08:42:02,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:02,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198512353] [2020-12-22 08:42:02,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:02,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198512353] [2020-12-22 08:42:02,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:02,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:42:02,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041228434] [2020-12-22 08:42:02,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:42:02,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:02,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:42:02,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:42:02,634 INFO L87 Difference]: Start difference. First operand 460 states and 625 transitions. Second operand 8 states. [2020-12-22 08:42:03,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:03,643 INFO L93 Difference]: Finished difference Result 1102 states and 1549 transitions. [2020-12-22 08:42:03,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:42:03,644 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-12-22 08:42:03,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:03,650 INFO L225 Difference]: With dead ends: 1102 [2020-12-22 08:42:03,651 INFO L226 Difference]: Without dead ends: 808 [2020-12-22 08:42:03,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:42:03,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2020-12-22 08:42:03,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 460. [2020-12-22 08:42:03,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-12-22 08:42:03,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 624 transitions. [2020-12-22 08:42:03,739 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 624 transitions. Word has length 61 [2020-12-22 08:42:03,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:03,742 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 624 transitions. [2020-12-22 08:42:03,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:42:03,742 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 624 transitions. [2020-12-22 08:42:03,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:42:03,744 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:03,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:03,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:42:03,745 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:03,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:03,746 INFO L82 PathProgramCache]: Analyzing trace with hash -471732578, now seen corresponding path program 1 times [2020-12-22 08:42:03,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:03,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100193654] [2020-12-22 08:42:03,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:03,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100193654] [2020-12-22 08:42:03,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:03,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:42:03,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675021473] [2020-12-22 08:42:03,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:42:03,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:03,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:42:03,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:42:03,994 INFO L87 Difference]: Start difference. First operand 460 states and 624 transitions. Second operand 9 states. [2020-12-22 08:42:05,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:05,241 INFO L93 Difference]: Finished difference Result 1236 states and 1754 transitions. [2020-12-22 08:42:05,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:42:05,242 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-12-22 08:42:05,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:05,251 INFO L225 Difference]: With dead ends: 1236 [2020-12-22 08:42:05,252 INFO L226 Difference]: Without dead ends: 1219 [2020-12-22 08:42:05,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:42:05,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2020-12-22 08:42:05,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 460. [2020-12-22 08:42:05,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-12-22 08:42:05,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 622 transitions. [2020-12-22 08:42:05,373 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 622 transitions. Word has length 63 [2020-12-22 08:42:05,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:05,374 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 622 transitions. [2020-12-22 08:42:05,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:42:05,374 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 622 transitions. [2020-12-22 08:42:05,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:42:05,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:05,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:05,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:42:05,382 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:05,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:05,383 INFO L82 PathProgramCache]: Analyzing trace with hash -157878139, now seen corresponding path program 1 times [2020-12-22 08:42:05,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:05,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888181734] [2020-12-22 08:42:05,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:05,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888181734] [2020-12-22 08:42:05,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:05,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:42:05,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946885330] [2020-12-22 08:42:05,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:42:05,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:05,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:42:05,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:42:05,674 INFO L87 Difference]: Start difference. First operand 460 states and 622 transitions. Second operand 9 states. [2020-12-22 08:42:07,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:07,184 INFO L93 Difference]: Finished difference Result 1200 states and 1698 transitions. [2020-12-22 08:42:07,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:42:07,186 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-12-22 08:42:07,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:07,194 INFO L225 Difference]: With dead ends: 1200 [2020-12-22 08:42:07,195 INFO L226 Difference]: Without dead ends: 1195 [2020-12-22 08:42:07,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:42:07,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-12-22 08:42:07,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 460. [2020-12-22 08:42:07,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-12-22 08:42:07,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 620 transitions. [2020-12-22 08:42:07,279 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 620 transitions. Word has length 63 [2020-12-22 08:42:07,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:07,280 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 620 transitions. [2020-12-22 08:42:07,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:42:07,280 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 620 transitions. [2020-12-22 08:42:07,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:42:07,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:07,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:07,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:42:07,283 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:07,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:07,284 INFO L82 PathProgramCache]: Analyzing trace with hash 2011079223, now seen corresponding path program 1 times [2020-12-22 08:42:07,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:07,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447656338] [2020-12-22 08:42:07,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:07,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:07,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447656338] [2020-12-22 08:42:07,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:07,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:42:07,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830108826] [2020-12-22 08:42:07,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:42:07,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:07,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:42:07,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:42:07,518 INFO L87 Difference]: Start difference. First operand 460 states and 620 transitions. Second operand 10 states. [2020-12-22 08:42:09,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:09,610 INFO L93 Difference]: Finished difference Result 1354 states and 1919 transitions. [2020-12-22 08:42:09,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:42:09,611 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-12-22 08:42:09,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:09,618 INFO L225 Difference]: With dead ends: 1354 [2020-12-22 08:42:09,619 INFO L226 Difference]: Without dead ends: 1099 [2020-12-22 08:42:09,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:42:09,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2020-12-22 08:42:09,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 460. [2020-12-22 08:42:09,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-12-22 08:42:09,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 619 transitions. [2020-12-22 08:42:09,694 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 619 transitions. Word has length 63 [2020-12-22 08:42:09,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:09,694 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 619 transitions. [2020-12-22 08:42:09,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:42:09,696 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 619 transitions. [2020-12-22 08:42:09,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:42:09,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:09,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:09,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:42:09,698 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:09,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:09,699 INFO L82 PathProgramCache]: Analyzing trace with hash 556986468, now seen corresponding path program 1 times [2020-12-22 08:42:09,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:09,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479770183] [2020-12-22 08:42:09,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:10,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:10,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479770183] [2020-12-22 08:42:10,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:10,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:42:10,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698541506] [2020-12-22 08:42:10,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:42:10,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:10,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:42:10,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:42:10,014 INFO L87 Difference]: Start difference. First operand 460 states and 619 transitions. Second operand 11 states. [2020-12-22 08:42:13,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:13,724 INFO L93 Difference]: Finished difference Result 2869 states and 4186 transitions. [2020-12-22 08:42:13,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:42:13,725 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-12-22 08:42:13,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:13,744 INFO L225 Difference]: With dead ends: 2869 [2020-12-22 08:42:13,744 INFO L226 Difference]: Without dead ends: 2644 [2020-12-22 08:42:13,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2020-12-22 08:42:13,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2020-12-22 08:42:13,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 464. [2020-12-22 08:42:13,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-12-22 08:42:13,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 623 transitions. [2020-12-22 08:42:13,908 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 623 transitions. Word has length 63 [2020-12-22 08:42:13,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:13,908 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 623 transitions. [2020-12-22 08:42:13,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:42:13,909 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 623 transitions. [2020-12-22 08:42:13,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:42:13,910 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:13,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:13,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:42:13,911 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:13,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:13,911 INFO L82 PathProgramCache]: Analyzing trace with hash -33472501, now seen corresponding path program 1 times [2020-12-22 08:42:13,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:13,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179160375] [2020-12-22 08:42:13,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:14,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:14,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179160375] [2020-12-22 08:42:14,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:14,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:42:14,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219814071] [2020-12-22 08:42:14,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:42:14,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:14,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:42:14,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:42:14,135 INFO L87 Difference]: Start difference. First operand 464 states and 623 transitions. Second operand 9 states. [2020-12-22 08:42:15,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:15,440 INFO L93 Difference]: Finished difference Result 1412 states and 2017 transitions. [2020-12-22 08:42:15,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:42:15,440 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-12-22 08:42:15,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:15,446 INFO L225 Difference]: With dead ends: 1412 [2020-12-22 08:42:15,446 INFO L226 Difference]: Without dead ends: 1199 [2020-12-22 08:42:15,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:42:15,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-12-22 08:42:15,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 464. [2020-12-22 08:42:15,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-12-22 08:42:15,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 622 transitions. [2020-12-22 08:42:15,526 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 622 transitions. Word has length 63 [2020-12-22 08:42:15,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:15,527 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 622 transitions. [2020-12-22 08:42:15,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:42:15,527 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 622 transitions. [2020-12-22 08:42:15,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:42:15,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:15,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:15,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:42:15,528 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:15,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:15,529 INFO L82 PathProgramCache]: Analyzing trace with hash -653212004, now seen corresponding path program 1 times [2020-12-22 08:42:15,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:15,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520931800] [2020-12-22 08:42:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:15,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520931800] [2020-12-22 08:42:15,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:15,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:42:15,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781291052] [2020-12-22 08:42:15,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:42:15,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:15,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:42:15,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:42:15,720 INFO L87 Difference]: Start difference. First operand 464 states and 622 transitions. Second operand 11 states. [2020-12-22 08:42:18,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:18,579 INFO L93 Difference]: Finished difference Result 2305 states and 3330 transitions. [2020-12-22 08:42:18,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:42:18,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-12-22 08:42:18,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:18,589 INFO L225 Difference]: With dead ends: 2305 [2020-12-22 08:42:18,589 INFO L226 Difference]: Without dead ends: 2300 [2020-12-22 08:42:18,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2020-12-22 08:42:18,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2020-12-22 08:42:18,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 468. [2020-12-22 08:42:18,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-12-22 08:42:18,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 626 transitions. [2020-12-22 08:42:18,703 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 626 transitions. Word has length 63 [2020-12-22 08:42:18,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:18,704 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 626 transitions. [2020-12-22 08:42:18,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:42:18,704 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 626 transitions. [2020-12-22 08:42:18,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:42:18,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:18,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:18,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:42:18,706 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:18,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:18,706 INFO L82 PathProgramCache]: Analyzing trace with hash 543767036, now seen corresponding path program 1 times [2020-12-22 08:42:18,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:18,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481443748] [2020-12-22 08:42:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:18,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481443748] [2020-12-22 08:42:18,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:18,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:42:18,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466044584] [2020-12-22 08:42:18,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:42:18,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:18,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:42:18,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:42:18,846 INFO L87 Difference]: Start difference. First operand 468 states and 626 transitions. Second operand 9 states. [2020-12-22 08:42:20,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:20,100 INFO L93 Difference]: Finished difference Result 1409 states and 2012 transitions. [2020-12-22 08:42:20,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:42:20,101 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-12-22 08:42:20,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:20,114 INFO L225 Difference]: With dead ends: 1409 [2020-12-22 08:42:20,114 INFO L226 Difference]: Without dead ends: 1199 [2020-12-22 08:42:20,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:42:20,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-12-22 08:42:20,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 468. [2020-12-22 08:42:20,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-12-22 08:42:20,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 625 transitions. [2020-12-22 08:42:20,218 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 625 transitions. Word has length 63 [2020-12-22 08:42:20,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:20,219 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 625 transitions. [2020-12-22 08:42:20,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:42:20,219 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 625 transitions. [2020-12-22 08:42:20,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:42:20,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:20,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:20,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:42:20,220 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:20,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:20,221 INFO L82 PathProgramCache]: Analyzing trace with hash 467877792, now seen corresponding path program 1 times [2020-12-22 08:42:20,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:20,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091546346] [2020-12-22 08:42:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:20,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091546346] [2020-12-22 08:42:20,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:20,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:42:20,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77159946] [2020-12-22 08:42:20,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:42:20,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:20,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:42:20,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:42:20,381 INFO L87 Difference]: Start difference. First operand 468 states and 625 transitions. Second operand 9 states. [2020-12-22 08:42:21,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:21,488 INFO L93 Difference]: Finished difference Result 1264 states and 1809 transitions. [2020-12-22 08:42:21,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 08:42:21,488 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-12-22 08:42:21,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:21,493 INFO L225 Difference]: With dead ends: 1264 [2020-12-22 08:42:21,493 INFO L226 Difference]: Without dead ends: 1009 [2020-12-22 08:42:21,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:42:21,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-12-22 08:42:21,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 468. [2020-12-22 08:42:21,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-12-22 08:42:21,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 624 transitions. [2020-12-22 08:42:21,593 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 624 transitions. Word has length 64 [2020-12-22 08:42:21,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:21,593 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 624 transitions. [2020-12-22 08:42:21,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:42:21,594 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 624 transitions. [2020-12-22 08:42:21,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:42:21,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:21,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:21,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:42:21,595 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:21,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:21,596 INFO L82 PathProgramCache]: Analyzing trace with hash -766225965, now seen corresponding path program 1 times [2020-12-22 08:42:21,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:21,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759883881] [2020-12-22 08:42:21,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:21,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759883881] [2020-12-22 08:42:21,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:21,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:42:21,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283330435] [2020-12-22 08:42:21,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:42:21,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:21,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:42:21,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:42:21,723 INFO L87 Difference]: Start difference. First operand 468 states and 624 transitions. Second operand 9 states. [2020-12-22 08:42:23,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:23,045 INFO L93 Difference]: Finished difference Result 1204 states and 1695 transitions. [2020-12-22 08:42:23,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:42:23,046 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-12-22 08:42:23,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:23,052 INFO L225 Difference]: With dead ends: 1204 [2020-12-22 08:42:23,052 INFO L226 Difference]: Without dead ends: 1199 [2020-12-22 08:42:23,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:42:23,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-12-22 08:42:23,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 464. [2020-12-22 08:42:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-12-22 08:42:23,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 619 transitions. [2020-12-22 08:42:23,145 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 619 transitions. Word has length 64 [2020-12-22 08:42:23,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:23,146 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 619 transitions. [2020-12-22 08:42:23,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:42:23,146 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 619 transitions. [2020-12-22 08:42:23,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:42:23,147 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:23,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:23,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:42:23,148 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:23,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:23,148 INFO L82 PathProgramCache]: Analyzing trace with hash -56004428, now seen corresponding path program 1 times [2020-12-22 08:42:23,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:23,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979478854] [2020-12-22 08:42:23,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:23,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979478854] [2020-12-22 08:42:23,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:23,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:42:23,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494808050] [2020-12-22 08:42:23,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:42:23,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:23,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:42:23,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:42:23,291 INFO L87 Difference]: Start difference. First operand 464 states and 619 transitions. Second operand 9 states. [2020-12-22 08:42:24,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:24,750 INFO L93 Difference]: Finished difference Result 1444 states and 2061 transitions. [2020-12-22 08:42:24,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:42:24,750 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-12-22 08:42:24,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:24,756 INFO L225 Difference]: With dead ends: 1444 [2020-12-22 08:42:24,756 INFO L226 Difference]: Without dead ends: 1219 [2020-12-22 08:42:24,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:42:24,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2020-12-22 08:42:24,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 460. [2020-12-22 08:42:24,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-12-22 08:42:24,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 614 transitions. [2020-12-22 08:42:24,862 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 614 transitions. Word has length 64 [2020-12-22 08:42:24,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:24,863 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 614 transitions. [2020-12-22 08:42:24,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:42:24,863 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 614 transitions. [2020-12-22 08:42:24,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:42:24,864 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:24,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:24,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:42:24,865 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:24,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:24,865 INFO L82 PathProgramCache]: Analyzing trace with hash -2022048839, now seen corresponding path program 1 times [2020-12-22 08:42:24,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:24,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209276505] [2020-12-22 08:42:24,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:25,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:25,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209276505] [2020-12-22 08:42:25,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:25,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-12-22 08:42:25,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400805183] [2020-12-22 08:42:25,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 08:42:25,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:25,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 08:42:25,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:42:25,821 INFO L87 Difference]: Start difference. First operand 460 states and 614 transitions. Second operand 24 states. [2020-12-22 08:42:26,133 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-12-22 08:42:26,648 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-12-22 08:42:26,805 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-22 08:42:27,207 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-12-22 08:42:27,437 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-12-22 08:42:27,731 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-12-22 08:42:27,941 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-12-22 08:42:28,148 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-12-22 08:42:29,540 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-12-22 08:42:31,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:31,770 INFO L93 Difference]: Finished difference Result 1336 states and 1863 transitions. [2020-12-22 08:42:31,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-22 08:42:31,771 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 65 [2020-12-22 08:42:31,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:31,776 INFO L225 Difference]: With dead ends: 1336 [2020-12-22 08:42:31,776 INFO L226 Difference]: Without dead ends: 1332 [2020-12-22 08:42:31,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=394, Invalid=1862, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 08:42:31,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2020-12-22 08:42:31,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 466. [2020-12-22 08:42:31,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-12-22 08:42:31,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 622 transitions. [2020-12-22 08:42:31,861 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 622 transitions. Word has length 65 [2020-12-22 08:42:31,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:31,861 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 622 transitions. [2020-12-22 08:42:31,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 08:42:31,861 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 622 transitions. [2020-12-22 08:42:31,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:42:31,862 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:31,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:31,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:42:31,863 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:31,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:31,863 INFO L82 PathProgramCache]: Analyzing trace with hash 71013216, now seen corresponding path program 1 times [2020-12-22 08:42:31,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:31,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937213566] [2020-12-22 08:42:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:32,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:32,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937213566] [2020-12-22 08:42:32,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:32,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-12-22 08:42:32,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676007678] [2020-12-22 08:42:32,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 08:42:32,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:32,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 08:42:32,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:42:32,617 INFO L87 Difference]: Start difference. First operand 466 states and 622 transitions. Second operand 22 states. [2020-12-22 08:42:32,826 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 77 [2020-12-22 08:42:33,637 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2020-12-22 08:42:33,836 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-12-22 08:42:34,063 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-12-22 08:42:34,264 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-12-22 08:42:34,430 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-12-22 08:42:38,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:38,108 INFO L93 Difference]: Finished difference Result 1474 states and 2093 transitions. [2020-12-22 08:42:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:42:38,109 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-12-22 08:42:38,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:38,114 INFO L225 Difference]: With dead ends: 1474 [2020-12-22 08:42:38,114 INFO L226 Difference]: Without dead ends: 1259 [2020-12-22 08:42:38,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=280, Invalid=1360, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:42:38,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2020-12-22 08:42:38,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 465. [2020-12-22 08:42:38,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-12-22 08:42:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 619 transitions. [2020-12-22 08:42:38,225 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 619 transitions. Word has length 65 [2020-12-22 08:42:38,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:38,225 INFO L481 AbstractCegarLoop]: Abstraction has 465 states and 619 transitions. [2020-12-22 08:42:38,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 08:42:38,226 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 619 transitions. [2020-12-22 08:42:38,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:42:38,226 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:38,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:38,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:42:38,227 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:38,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:38,228 INFO L82 PathProgramCache]: Analyzing trace with hash -907607662, now seen corresponding path program 1 times [2020-12-22 08:42:38,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:38,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567461853] [2020-12-22 08:42:38,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:39,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567461853] [2020-12-22 08:42:39,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:39,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:42:39,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736507226] [2020-12-22 08:42:39,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:42:39,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:39,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:42:39,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:42:39,138 INFO L87 Difference]: Start difference. First operand 465 states and 619 transitions. Second operand 23 states. [2020-12-22 08:42:39,452 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-12-22 08:42:39,916 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-12-22 08:42:40,086 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-12-22 08:42:40,265 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 08:42:40,621 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-22 08:42:40,907 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-12-22 08:42:41,224 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-12-22 08:42:41,469 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-12-22 08:42:41,694 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-12-22 08:42:43,564 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-22 08:42:46,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:46,164 INFO L93 Difference]: Finished difference Result 1498 states and 2120 transitions. [2020-12-22 08:42:46,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:42:46,165 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2020-12-22 08:42:46,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:46,169 INFO L225 Difference]: With dead ends: 1498 [2020-12-22 08:42:46,170 INFO L226 Difference]: Without dead ends: 1286 [2020-12-22 08:42:46,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=304, Invalid=1502, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 08:42:46,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2020-12-22 08:42:46,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 475. [2020-12-22 08:42:46,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-12-22 08:42:46,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 634 transitions. [2020-12-22 08:42:46,290 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 634 transitions. Word has length 65 [2020-12-22 08:42:46,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:46,290 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 634 transitions. [2020-12-22 08:42:46,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 08:42:46,290 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 634 transitions. [2020-12-22 08:42:46,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:42:46,291 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:46,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:46,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:42:46,292 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:46,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:46,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1360022849, now seen corresponding path program 1 times [2020-12-22 08:42:46,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:46,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003789327] [2020-12-22 08:42:46,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:47,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:47,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003789327] [2020-12-22 08:42:47,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:47,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:42:47,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249714791] [2020-12-22 08:42:47,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:42:47,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:47,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:42:47,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:42:47,316 INFO L87 Difference]: Start difference. First operand 475 states and 634 transitions. Second operand 23 states. [2020-12-22 08:42:47,668 WARN L197 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 90 [2020-12-22 08:42:48,263 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:42:48,427 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-12-22 08:42:48,743 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-12-22 08:42:49,015 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-22 08:42:49,330 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-12-22 08:42:49,547 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-12-22 08:42:49,755 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-12-22 08:42:49,983 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:42:50,240 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-22 08:42:50,422 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-22 08:42:54,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:54,901 INFO L93 Difference]: Finished difference Result 1394 states and 1961 transitions. [2020-12-22 08:42:54,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:42:54,901 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2020-12-22 08:42:54,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:54,905 INFO L225 Difference]: With dead ends: 1394 [2020-12-22 08:42:54,905 INFO L226 Difference]: Without dead ends: 1174 [2020-12-22 08:42:54,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=311, Invalid=1329, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:42:54,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2020-12-22 08:42:55,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 486. [2020-12-22 08:42:55,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-12-22 08:42:55,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 647 transitions. [2020-12-22 08:42:55,038 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 647 transitions. Word has length 65 [2020-12-22 08:42:55,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:55,038 INFO L481 AbstractCegarLoop]: Abstraction has 486 states and 647 transitions. [2020-12-22 08:42:55,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 08:42:55,038 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 647 transitions. [2020-12-22 08:42:55,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:42:55,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:55,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:55,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:42:55,040 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:55,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:55,041 INFO L82 PathProgramCache]: Analyzing trace with hash -138245905, now seen corresponding path program 1 times [2020-12-22 08:42:55,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:55,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044439142] [2020-12-22 08:42:55,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:56,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044439142] [2020-12-22 08:42:56,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:56,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-12-22 08:42:56,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716428546] [2020-12-22 08:42:56,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 08:42:56,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:56,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 08:42:56,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:42:56,254 INFO L87 Difference]: Start difference. First operand 486 states and 647 transitions. Second operand 25 states. [2020-12-22 08:42:56,670 WARN L197 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 105 [2020-12-22 08:42:57,244 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-12-22 08:42:57,423 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-12-22 08:42:57,595 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-12-22 08:42:57,946 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-12-22 08:42:58,249 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-22 08:42:58,603 WARN L197 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-12-22 08:42:58,871 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-22 08:42:59,119 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-22 08:42:59,459 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-12-22 08:42:59,898 WARN L197 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-12-22 08:43:00,129 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-12-22 08:43:01,838 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-12-22 08:43:04,249 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-12-22 08:43:05,072 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-12-22 08:43:06,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:06,939 INFO L93 Difference]: Finished difference Result 3141 states and 4638 transitions. [2020-12-22 08:43:06,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 08:43:06,941 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 65 [2020-12-22 08:43:06,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:06,954 INFO L225 Difference]: With dead ends: 3141 [2020-12-22 08:43:06,955 INFO L226 Difference]: Without dead ends: 2932 [2020-12-22 08:43:06,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=452, Invalid=2098, Unknown=0, NotChecked=0, Total=2550 [2020-12-22 08:43:06,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-12-22 08:43:07,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 491. [2020-12-22 08:43:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-12-22 08:43:07,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 654 transitions. [2020-12-22 08:43:07,090 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 654 transitions. Word has length 65 [2020-12-22 08:43:07,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:07,090 INFO L481 AbstractCegarLoop]: Abstraction has 491 states and 654 transitions. [2020-12-22 08:43:07,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-22 08:43:07,090 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 654 transitions. [2020-12-22 08:43:07,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:43:07,091 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:07,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:43:07,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:43:07,092 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:07,093 INFO L82 PathProgramCache]: Analyzing trace with hash -171274202, now seen corresponding path program 1 times [2020-12-22 08:43:07,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:07,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805024346] [2020-12-22 08:43:07,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:08,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805024346] [2020-12-22 08:43:08,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:08,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-12-22 08:43:08,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927801085] [2020-12-22 08:43:08,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 08:43:08,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:08,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 08:43:08,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:43:08,367 INFO L87 Difference]: Start difference. First operand 491 states and 654 transitions. Second operand 24 states. [2020-12-22 08:43:08,868 WARN L197 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 99 [2020-12-22 08:43:09,346 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-12-22 08:43:09,546 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-12-22 08:43:09,757 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-12-22 08:43:09,980 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-12-22 08:43:10,407 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-12-22 08:43:10,772 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-12-22 08:43:11,214 WARN L197 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-12-22 08:43:11,534 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-12-22 08:43:11,843 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-12-22 08:43:12,179 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-12-22 08:43:12,552 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-12-22 08:43:12,851 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-12-22 08:43:18,249 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-12-22 08:43:19,421 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-22 08:43:19,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:19,994 INFO L93 Difference]: Finished difference Result 2308 states and 3368 transitions. [2020-12-22 08:43:19,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-22 08:43:19,995 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 65 [2020-12-22 08:43:19,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:20,002 INFO L225 Difference]: With dead ends: 2308 [2020-12-22 08:43:20,003 INFO L226 Difference]: Without dead ends: 2094 [2020-12-22 08:43:20,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=402, Invalid=1668, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 08:43:20,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2020-12-22 08:43:20,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 491. [2020-12-22 08:43:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-12-22 08:43:20,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 653 transitions. [2020-12-22 08:43:20,132 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 653 transitions. Word has length 65 [2020-12-22 08:43:20,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:20,132 INFO L481 AbstractCegarLoop]: Abstraction has 491 states and 653 transitions. [2020-12-22 08:43:20,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 08:43:20,132 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 653 transitions. [2020-12-22 08:43:20,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:43:20,133 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:20,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:43:20,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:43:20,134 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:20,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:20,134 INFO L82 PathProgramCache]: Analyzing trace with hash 914761815, now seen corresponding path program 1 times [2020-12-22 08:43:20,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:20,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856564436] [2020-12-22 08:43:20,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:21,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:21,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856564436] [2020-12-22 08:43:21,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:21,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-12-22 08:43:21,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309978738] [2020-12-22 08:43:21,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 08:43:21,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:21,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 08:43:21,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:43:21,501 INFO L87 Difference]: Start difference. First operand 491 states and 653 transitions. Second operand 24 states. [2020-12-22 08:43:22,106 WARN L197 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-22 08:43:22,669 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-12-22 08:43:22,865 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-12-22 08:43:23,098 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-12-22 08:43:23,371 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-12-22 08:43:23,650 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-12-22 08:43:24,147 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-12-22 08:43:24,567 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-12-22 08:43:25,062 WARN L197 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2020-12-22 08:43:25,455 WARN L197 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-12-22 08:43:25,851 WARN L197 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-12-22 08:43:26,253 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-12-22 08:43:26,704 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-12-22 08:43:27,055 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-12-22 08:43:27,507 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-12-22 08:43:27,923 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-12-22 08:43:28,316 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-12-22 08:43:28,606 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-12-22 08:43:29,285 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-12-22 08:43:32,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:32,840 INFO L93 Difference]: Finished difference Result 1268 states and 1781 transitions. [2020-12-22 08:43:32,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-22 08:43:32,841 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 65 [2020-12-22 08:43:32,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:32,845 INFO L225 Difference]: With dead ends: 1268 [2020-12-22 08:43:32,846 INFO L226 Difference]: Without dead ends: 1053 [2020-12-22 08:43:32,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=451, Invalid=1619, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 08:43:32,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2020-12-22 08:43:32,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 497. [2020-12-22 08:43:32,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-12-22 08:43:32,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 659 transitions. [2020-12-22 08:43:32,991 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 659 transitions. Word has length 65 [2020-12-22 08:43:32,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:32,991 INFO L481 AbstractCegarLoop]: Abstraction has 497 states and 659 transitions. [2020-12-22 08:43:32,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 08:43:32,991 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 659 transitions. [2020-12-22 08:43:32,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:43:32,992 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:32,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:43:32,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 08:43:32,993 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:32,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:32,994 INFO L82 PathProgramCache]: Analyzing trace with hash 909641217, now seen corresponding path program 1 times [2020-12-22 08:43:32,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:32,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020428750] [2020-12-22 08:43:32,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:34,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020428750] [2020-12-22 08:43:34,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:34,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-12-22 08:43:34,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081116262] [2020-12-22 08:43:34,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 08:43:34,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:34,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 08:43:34,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:43:34,540 INFO L87 Difference]: Start difference. First operand 497 states and 659 transitions. Second operand 25 states. [2020-12-22 08:43:35,214 WARN L197 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 115 [2020-12-22 08:43:35,847 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-12-22 08:43:36,047 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-12-22 08:43:36,293 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-12-22 08:43:36,559 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-12-22 08:43:36,823 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-12-22 08:43:37,348 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-12-22 08:43:37,776 WARN L197 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-12-22 08:43:38,318 WARN L197 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2020-12-22 08:43:38,752 WARN L197 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-22 08:43:39,141 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-22 08:43:39,535 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-12-22 08:43:40,008 WARN L197 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-12-22 08:43:40,364 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-12-22 08:43:40,666 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-12-22 08:43:41,001 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-12-22 08:43:41,426 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-12-22 08:43:41,819 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-12-22 08:43:42,183 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-22 08:43:42,506 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-12-22 08:43:43,009 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-12-22 08:43:43,482 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-12-22 08:43:48,017 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-12-22 08:43:49,327 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-12-22 08:43:50,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:50,814 INFO L93 Difference]: Finished difference Result 2355 states and 3438 transitions. [2020-12-22 08:43:50,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 08:43:50,816 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 65 [2020-12-22 08:43:50,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:50,821 INFO L225 Difference]: With dead ends: 2355 [2020-12-22 08:43:50,822 INFO L226 Difference]: Without dead ends: 2144 [2020-12-22 08:43:50,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=555, Invalid=2201, Unknown=0, NotChecked=0, Total=2756 [2020-12-22 08:43:50,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2020-12-22 08:43:50,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 494. [2020-12-22 08:43:50,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-12-22 08:43:50,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 655 transitions. [2020-12-22 08:43:50,990 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 655 transitions. Word has length 65 [2020-12-22 08:43:50,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:50,990 INFO L481 AbstractCegarLoop]: Abstraction has 494 states and 655 transitions. [2020-12-22 08:43:50,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-22 08:43:50,990 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 655 transitions. [2020-12-22 08:43:50,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:43:50,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:50,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:43:50,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 08:43:50,992 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:50,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:50,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1910519334, now seen corresponding path program 1 times [2020-12-22 08:43:50,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:50,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069480241] [2020-12-22 08:43:50,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:51,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069480241] [2020-12-22 08:43:51,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:51,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:43:51,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128792306] [2020-12-22 08:43:51,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:43:51,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:51,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:43:51,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:43:51,318 INFO L87 Difference]: Start difference. First operand 494 states and 655 transitions. Second operand 11 states. [2020-12-22 08:43:51,443 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-22 08:43:51,735 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-12-22 08:43:52,129 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:43:53,540 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-12-22 08:43:55,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:55,045 INFO L93 Difference]: Finished difference Result 1360 states and 1901 transitions. [2020-12-22 08:43:55,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 08:43:55,046 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2020-12-22 08:43:55,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:55,049 INFO L225 Difference]: With dead ends: 1360 [2020-12-22 08:43:55,049 INFO L226 Difference]: Without dead ends: 1353 [2020-12-22 08:43:55,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2020-12-22 08:43:55,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2020-12-22 08:43:55,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 498. [2020-12-22 08:43:55,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-12-22 08:43:55,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 658 transitions. [2020-12-22 08:43:55,200 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 658 transitions. Word has length 66 [2020-12-22 08:43:55,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:55,200 INFO L481 AbstractCegarLoop]: Abstraction has 498 states and 658 transitions. [2020-12-22 08:43:55,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:43:55,200 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 658 transitions. [2020-12-22 08:43:55,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:43:55,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:55,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:43:55,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 08:43:55,202 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:55,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:55,202 INFO L82 PathProgramCache]: Analyzing trace with hash -679485959, now seen corresponding path program 1 times [2020-12-22 08:43:55,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:55,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669734976] [2020-12-22 08:43:55,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:55,675 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-12-22 08:43:55,823 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2020-12-22 08:43:56,003 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-12-22 08:43:56,233 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-22 08:43:56,472 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-12-22 08:43:56,681 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-22 08:43:56,905 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-12-22 08:43:57,130 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-12-22 08:43:57,347 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-12-22 08:43:57,621 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2020-12-22 08:43:57,821 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2020-12-22 08:43:58,015 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2020-12-22 08:43:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:58,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669734976] [2020-12-22 08:43:58,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:58,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:43:58,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207361220] [2020-12-22 08:43:58,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:43:58,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:58,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:43:58,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:43:58,758 INFO L87 Difference]: Start difference. First operand 498 states and 658 transitions. Second operand 23 states. [2020-12-22 08:43:59,254 WARN L197 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-12-22 08:43:59,478 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-12-22 08:43:59,741 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-12-22 08:43:59,997 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2020-12-22 08:44:00,320 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 34 [2020-12-22 08:44:00,663 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-12-22 08:44:01,153 WARN L197 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-12-22 08:44:01,618 WARN L197 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-12-22 08:44:02,155 WARN L197 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2020-12-22 08:44:02,643 WARN L197 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-12-22 08:44:03,155 WARN L197 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2020-12-22 08:44:04,130 WARN L197 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2020-12-22 08:44:04,740 WARN L197 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-12-22 08:44:05,349 WARN L197 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-12-22 08:44:06,038 WARN L197 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-12-22 08:44:06,407 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 08:44:07,459 WARN L197 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 74 [2020-12-22 08:44:07,826 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 08:44:08,176 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 08:44:09,518 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-12-22 08:44:13,824 WARN L197 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-12-22 08:44:16,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:16,391 INFO L93 Difference]: Finished difference Result 1616 states and 2264 transitions. [2020-12-22 08:44:16,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-22 08:44:16,393 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 66 [2020-12-22 08:44:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:16,397 INFO L225 Difference]: With dead ends: 1616 [2020-12-22 08:44:16,397 INFO L226 Difference]: Without dead ends: 1604 [2020-12-22 08:44:16,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=387, Invalid=1593, Unknown=0, NotChecked=0, Total=1980 [2020-12-22 08:44:16,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2020-12-22 08:44:16,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 502. [2020-12-22 08:44:16,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2020-12-22 08:44:16,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 662 transitions. [2020-12-22 08:44:16,617 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 662 transitions. Word has length 66 [2020-12-22 08:44:16,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:16,617 INFO L481 AbstractCegarLoop]: Abstraction has 502 states and 662 transitions. [2020-12-22 08:44:16,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 08:44:16,618 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 662 transitions. [2020-12-22 08:44:16,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:44:16,619 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:16,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:44:16,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 08:44:16,619 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:16,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:16,620 INFO L82 PathProgramCache]: Analyzing trace with hash -595757799, now seen corresponding path program 1 times [2020-12-22 08:44:16,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:16,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627155835] [2020-12-22 08:44:16,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:16,958 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2020-12-22 08:44:17,240 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2020-12-22 08:44:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:17,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627155835] [2020-12-22 08:44:17,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:17,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-22 08:44:17,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585487302] [2020-12-22 08:44:17,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 08:44:17,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:17,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 08:44:17,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:44:17,800 INFO L87 Difference]: Start difference. First operand 502 states and 662 transitions. Second operand 14 states. [2020-12-22 08:44:18,029 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 21 [2020-12-22 08:44:18,343 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 23 [2020-12-22 08:44:18,519 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2020-12-22 08:44:18,729 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2020-12-22 08:44:19,074 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-12-22 08:44:19,370 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-12-22 08:44:19,614 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-12-22 08:44:19,871 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:44:20,326 WARN L197 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2020-12-22 08:44:23,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:23,029 INFO L93 Difference]: Finished difference Result 1874 states and 2692 transitions. [2020-12-22 08:44:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:44:23,031 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-12-22 08:44:23,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:23,035 INFO L225 Difference]: With dead ends: 1874 [2020-12-22 08:44:23,035 INFO L226 Difference]: Without dead ends: 1842 [2020-12-22 08:44:23,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2020-12-22 08:44:23,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2020-12-22 08:44:23,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 484. [2020-12-22 08:44:23,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-12-22 08:44:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 640 transitions. [2020-12-22 08:44:23,210 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 640 transitions. Word has length 66 [2020-12-22 08:44:23,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:23,210 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 640 transitions. [2020-12-22 08:44:23,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 08:44:23,211 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 640 transitions. [2020-12-22 08:44:23,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:44:23,212 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:23,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:44:23,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 08:44:23,212 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:23,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:23,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1869823065, now seen corresponding path program 1 times [2020-12-22 08:44:23,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:23,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568599603] [2020-12-22 08:44:23,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:23,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568599603] [2020-12-22 08:44:23,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:23,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:44:23,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291683198] [2020-12-22 08:44:23,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:44:23,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:23,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:44:23,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:44:23,808 INFO L87 Difference]: Start difference. First operand 484 states and 640 transitions. Second operand 12 states. [2020-12-22 08:44:24,206 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2020-12-22 08:44:24,419 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-12-22 08:44:24,602 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-12-22 08:44:24,970 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2020-12-22 08:44:25,315 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2020-12-22 08:44:27,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:27,075 INFO L93 Difference]: Finished difference Result 1900 states and 2730 transitions. [2020-12-22 08:44:27,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:44:27,076 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-12-22 08:44:27,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:27,080 INFO L225 Difference]: With dead ends: 1900 [2020-12-22 08:44:27,080 INFO L226 Difference]: Without dead ends: 1666 [2020-12-22 08:44:27,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:44:27,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2020-12-22 08:44:27,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 452. [2020-12-22 08:44:27,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-12-22 08:44:27,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 595 transitions. [2020-12-22 08:44:27,267 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 595 transitions. Word has length 66 [2020-12-22 08:44:27,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:27,267 INFO L481 AbstractCegarLoop]: Abstraction has 452 states and 595 transitions. [2020-12-22 08:44:27,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:44:27,267 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 595 transitions. [2020-12-22 08:44:27,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:44:27,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:27,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:44:27,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 08:44:27,269 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:27,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:27,269 INFO L82 PathProgramCache]: Analyzing trace with hash 476193166, now seen corresponding path program 1 times [2020-12-22 08:44:27,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:27,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030716466] [2020-12-22 08:44:27,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:27,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:27,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030716466] [2020-12-22 08:44:27,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:27,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:44:27,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087311122] [2020-12-22 08:44:27,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:44:27,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:27,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:44:27,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:44:27,627 INFO L87 Difference]: Start difference. First operand 452 states and 595 transitions. Second operand 11 states. [2020-12-22 08:44:27,749 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-22 08:44:28,075 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-12-22 08:44:28,489 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:44:29,233 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-22 08:44:30,044 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-12-22 08:44:35,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:35,480 INFO L93 Difference]: Finished difference Result 2878 states and 4170 transitions. [2020-12-22 08:44:35,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:44:35,482 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2020-12-22 08:44:35,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:35,487 INFO L225 Difference]: With dead ends: 2878 [2020-12-22 08:44:35,487 INFO L226 Difference]: Without dead ends: 2626 [2020-12-22 08:44:35,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2020-12-22 08:44:35,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2020-12-22 08:44:35,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 460. [2020-12-22 08:44:35,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-12-22 08:44:35,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 603 transitions. [2020-12-22 08:44:35,777 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 603 transitions. Word has length 66 [2020-12-22 08:44:35,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:35,778 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 603 transitions. [2020-12-22 08:44:35,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:44:35,778 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 603 transitions. [2020-12-22 08:44:35,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:44:35,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:35,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:44:35,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 08:44:35,779 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:35,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:35,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1020060386, now seen corresponding path program 1 times [2020-12-22 08:44:35,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:35,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663429427] [2020-12-22 08:44:35,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:36,182 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-12-22 08:44:36,330 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-12-22 08:44:36,557 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2020-12-22 08:44:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:37,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663429427] [2020-12-22 08:44:37,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:37,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:44:37,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827929739] [2020-12-22 08:44:37,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:44:37,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:37,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:44:37,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:44:37,145 INFO L87 Difference]: Start difference. First operand 460 states and 603 transitions. Second operand 16 states. [2020-12-22 08:44:37,398 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2020-12-22 08:44:37,698 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2020-12-22 08:44:38,010 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-12-22 08:44:38,557 WARN L197 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-12-22 08:44:38,955 WARN L197 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-12-22 08:44:40,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:40,662 INFO L93 Difference]: Finished difference Result 811 states and 1118 transitions. [2020-12-22 08:44:40,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:44:40,664 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 66 [2020-12-22 08:44:40,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:40,665 INFO L225 Difference]: With dead ends: 811 [2020-12-22 08:44:40,666 INFO L226 Difference]: Without dead ends: 574 [2020-12-22 08:44:40,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:44:40,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-12-22 08:44:40,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 445. [2020-12-22 08:44:40,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-12-22 08:44:40,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 585 transitions. [2020-12-22 08:44:40,858 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 585 transitions. Word has length 66 [2020-12-22 08:44:40,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:40,858 INFO L481 AbstractCegarLoop]: Abstraction has 445 states and 585 transitions. [2020-12-22 08:44:40,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:44:40,858 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 585 transitions. [2020-12-22 08:44:40,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:44:40,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:40,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:44:40,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 08:44:40,859 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:40,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:40,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1845993125, now seen corresponding path program 1 times [2020-12-22 08:44:40,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:40,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018036142] [2020-12-22 08:44:40,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:41,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:41,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018036142] [2020-12-22 08:44:41,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:41,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:44:41,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913057116] [2020-12-22 08:44:41,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:44:41,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:41,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:44:41,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:44:41,161 INFO L87 Difference]: Start difference. First operand 445 states and 585 transitions. Second operand 11 states. [2020-12-22 08:44:41,321 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-12-22 08:44:41,661 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-22 08:44:41,838 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-12-22 08:44:42,199 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 08:44:42,720 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2020-12-22 08:44:43,288 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-12-22 08:44:43,514 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2020-12-22 08:44:43,922 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-22 08:44:44,131 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 34 [2020-12-22 08:44:44,769 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-12-22 08:44:45,672 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2020-12-22 08:44:45,962 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27 [2020-12-22 08:44:46,720 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 24 [2020-12-22 08:44:48,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:48,610 INFO L93 Difference]: Finished difference Result 2533 states and 3632 transitions. [2020-12-22 08:44:48,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 08:44:48,612 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2020-12-22 08:44:48,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:48,617 INFO L225 Difference]: With dead ends: 2533 [2020-12-22 08:44:48,618 INFO L226 Difference]: Without dead ends: 2526 [2020-12-22 08:44:48,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 08:44:48,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2020-12-22 08:44:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 449. [2020-12-22 08:44:48,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-12-22 08:44:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 588 transitions. [2020-12-22 08:44:48,899 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 588 transitions. Word has length 66 [2020-12-22 08:44:48,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:48,899 INFO L481 AbstractCegarLoop]: Abstraction has 449 states and 588 transitions. [2020-12-22 08:44:48,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:44:48,899 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 588 transitions. [2020-12-22 08:44:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:44:48,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:48,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:44:48,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 08:44:48,901 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:48,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:48,902 INFO L82 PathProgramCache]: Analyzing trace with hash 486961824, now seen corresponding path program 1 times [2020-12-22 08:44:48,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:48,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405026088] [2020-12-22 08:44:48,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:49,391 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-12-22 08:44:49,613 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2020-12-22 08:44:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:49,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405026088] [2020-12-22 08:44:49,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:49,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 08:44:49,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464467579] [2020-12-22 08:44:49,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:44:49,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:49,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:44:49,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:44:49,805 INFO L87 Difference]: Start difference. First operand 449 states and 588 transitions. Second operand 11 states. [2020-12-22 08:44:50,029 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-12-22 08:44:50,308 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 19 [2020-12-22 08:44:50,481 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 21 [2020-12-22 08:44:50,766 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-12-22 08:44:51,114 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-12-22 08:44:51,416 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-12-22 08:44:51,653 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:44:51,881 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-22 08:44:52,122 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-12-22 08:44:52,320 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2020-12-22 08:44:52,832 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2020-12-22 08:44:53,090 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-12-22 08:44:53,354 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2020-12-22 08:44:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:54,674 INFO L93 Difference]: Finished difference Result 1561 states and 2269 transitions. [2020-12-22 08:44:54,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 08:44:54,676 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2020-12-22 08:44:54,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:54,680 INFO L225 Difference]: With dead ends: 1561 [2020-12-22 08:44:54,680 INFO L226 Difference]: Without dead ends: 1260 [2020-12-22 08:44:54,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:44:54,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2020-12-22 08:44:55,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 356. [2020-12-22 08:44:55,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-12-22 08:44:55,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 479 transitions. [2020-12-22 08:44:55,003 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 479 transitions. Word has length 66 [2020-12-22 08:44:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:55,003 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 479 transitions. [2020-12-22 08:44:55,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:44:55,003 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 479 transitions. [2020-12-22 08:44:55,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:44:55,004 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:55,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:44:55,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 08:44:55,005 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:55,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:55,006 INFO L82 PathProgramCache]: Analyzing trace with hash 677199783, now seen corresponding path program 1 times [2020-12-22 08:44:55,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:55,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842478399] [2020-12-22 08:44:55,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:55,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842478399] [2020-12-22 08:44:55,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:55,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:44:55,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137917386] [2020-12-22 08:44:55,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:44:55,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:55,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:44:55,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:44:55,239 INFO L87 Difference]: Start difference. First operand 356 states and 479 transitions. Second operand 9 states. [2020-12-22 08:44:56,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:56,890 INFO L93 Difference]: Finished difference Result 874 states and 1227 transitions. [2020-12-22 08:44:56,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:44:56,892 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-12-22 08:44:56,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:56,893 INFO L225 Difference]: With dead ends: 874 [2020-12-22 08:44:56,893 INFO L226 Difference]: Without dead ends: 622 [2020-12-22 08:44:56,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:44:56,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2020-12-22 08:44:57,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 348. [2020-12-22 08:44:57,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-12-22 08:44:57,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 469 transitions. [2020-12-22 08:44:57,122 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 469 transitions. Word has length 67 [2020-12-22 08:44:57,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:57,123 INFO L481 AbstractCegarLoop]: Abstraction has 348 states and 469 transitions. [2020-12-22 08:44:57,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:44:57,123 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 469 transitions. [2020-12-22 08:44:57,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:44:57,123 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:57,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:44:57,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 08:44:57,124 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:57,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:57,124 INFO L82 PathProgramCache]: Analyzing trace with hash -863380496, now seen corresponding path program 1 times [2020-12-22 08:44:57,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:57,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227340599] [2020-12-22 08:44:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:58,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:58,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227340599] [2020-12-22 08:44:58,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:58,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:44:58,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395750863] [2020-12-22 08:44:58,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:44:58,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:58,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:44:58,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:44:58,995 INFO L87 Difference]: Start difference. First operand 348 states and 469 transitions. Second operand 23 states. [2020-12-22 08:44:59,526 WARN L197 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-12-22 08:44:59,836 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-12-22 08:45:00,097 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-12-22 08:45:00,431 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-12-22 08:45:00,775 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 08:45:01,055 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-12-22 08:45:01,653 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-12-22 08:45:02,047 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-12-22 08:45:02,466 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-12-22 08:45:02,886 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-12-22 08:45:03,244 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-12-22 08:45:03,699 WARN L197 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-12-22 08:45:05,257 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 08:45:07,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:07,894 INFO L93 Difference]: Finished difference Result 782 states and 1119 transitions. [2020-12-22 08:45:07,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 08:45:07,898 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 67 [2020-12-22 08:45:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:07,900 INFO L225 Difference]: With dead ends: 782 [2020-12-22 08:45:07,900 INFO L226 Difference]: Without dead ends: 778 [2020-12-22 08:45:07,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=245, Invalid=1161, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 08:45:07,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2020-12-22 08:45:08,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 344. [2020-12-22 08:45:08,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-12-22 08:45:08,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 465 transitions. [2020-12-22 08:45:08,088 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 465 transitions. Word has length 67 [2020-12-22 08:45:08,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:08,088 INFO L481 AbstractCegarLoop]: Abstraction has 344 states and 465 transitions. [2020-12-22 08:45:08,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 08:45:08,088 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 465 transitions. [2020-12-22 08:45:08,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:45:08,089 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:08,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:45:08,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 08:45:08,089 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:08,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:08,090 INFO L82 PathProgramCache]: Analyzing trace with hash 989039241, now seen corresponding path program 1 times [2020-12-22 08:45:08,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:08,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560081350] [2020-12-22 08:45:08,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:45:09,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560081350] [2020-12-22 08:45:09,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:09,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:45:09,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214757400] [2020-12-22 08:45:09,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:45:09,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:09,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:45:09,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:45:09,918 INFO L87 Difference]: Start difference. First operand 344 states and 465 transitions. Second operand 23 states. [2020-12-22 08:45:10,560 WARN L197 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2020-12-22 08:45:10,919 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-12-22 08:45:11,195 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2020-12-22 08:45:11,546 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-12-22 08:45:11,923 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-12-22 08:45:12,238 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-22 08:45:12,900 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-22 08:45:13,428 WARN L197 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-12-22 08:45:14,041 WARN L197 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2020-12-22 08:45:14,497 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-22 08:45:14,910 WARN L197 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-22 08:45:15,191 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-22 08:45:15,807 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 08:45:16,324 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2020-12-22 08:45:17,249 WARN L197 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-22 08:45:20,189 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-12-22 08:45:21,994 WARN L197 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-12-22 08:45:24,295 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-12-22 08:45:25,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:25,936 INFO L93 Difference]: Finished difference Result 2681 states and 4003 transitions. [2020-12-22 08:45:25,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-22 08:45:25,939 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 68 [2020-12-22 08:45:25,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:25,945 INFO L225 Difference]: With dead ends: 2681 [2020-12-22 08:45:25,945 INFO L226 Difference]: Without dead ends: 2675 [2020-12-22 08:45:25,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=364, Invalid=1892, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 08:45:25,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2675 states. [2020-12-22 08:45:26,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2675 to 355. [2020-12-22 08:45:26,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-12-22 08:45:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 479 transitions. [2020-12-22 08:45:26,246 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 479 transitions. Word has length 68 [2020-12-22 08:45:26,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:26,246 INFO L481 AbstractCegarLoop]: Abstraction has 355 states and 479 transitions. [2020-12-22 08:45:26,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 08:45:26,246 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 479 transitions. [2020-12-22 08:45:26,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:45:26,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:26,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:45:26,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 08:45:26,247 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:26,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:26,247 INFO L82 PathProgramCache]: Analyzing trace with hash -825467697, now seen corresponding path program 1 times [2020-12-22 08:45:26,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:26,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439255333] [2020-12-22 08:45:26,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:45:26,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439255333] [2020-12-22 08:45:26,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:26,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:45:26,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976568640] [2020-12-22 08:45:26,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:45:26,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:26,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:45:26,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:45:26,549 INFO L87 Difference]: Start difference. First operand 355 states and 479 transitions. Second operand 9 states. [2020-12-22 08:45:28,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:28,656 INFO L93 Difference]: Finished difference Result 624 states and 861 transitions. [2020-12-22 08:45:28,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 08:45:28,659 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-12-22 08:45:28,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:28,662 INFO L225 Difference]: With dead ends: 624 [2020-12-22 08:45:28,662 INFO L226 Difference]: Without dead ends: 617 [2020-12-22 08:45:28,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:45:28,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-12-22 08:45:28,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 355. [2020-12-22 08:45:28,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-12-22 08:45:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 478 transitions. [2020-12-22 08:45:28,869 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 478 transitions. Word has length 68 [2020-12-22 08:45:28,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:28,869 INFO L481 AbstractCegarLoop]: Abstraction has 355 states and 478 transitions. [2020-12-22 08:45:28,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:45:28,869 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 478 transitions. [2020-12-22 08:45:28,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:45:28,870 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:28,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:45:28,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 08:45:28,870 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:28,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:28,871 INFO L82 PathProgramCache]: Analyzing trace with hash 882869858, now seen corresponding path program 1 times [2020-12-22 08:45:28,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:28,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854197058] [2020-12-22 08:45:28,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:29,486 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-12-22 08:45:29,690 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2020-12-22 08:45:29,931 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2020-12-22 08:45:30,270 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-12-22 08:45:30,426 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2020-12-22 08:45:30,579 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2020-12-22 08:45:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:45:31,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854197058] [2020-12-22 08:45:31,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:31,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-12-22 08:45:31,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484947358] [2020-12-22 08:45:31,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 08:45:31,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:31,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 08:45:31,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:45:31,124 INFO L87 Difference]: Start difference. First operand 355 states and 478 transitions. Second operand 18 states. [2020-12-22 08:45:31,773 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-12-22 08:45:32,255 WARN L197 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-22 08:45:32,484 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-12-22 08:45:32,675 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-12-22 08:45:32,868 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-12-22 08:45:33,477 WARN L197 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-12-22 08:45:34,057 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-12-22 08:45:34,380 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-12-22 08:45:34,716 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-12-22 08:45:36,641 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-12-22 08:45:39,571 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-12-22 08:45:41,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:41,879 INFO L93 Difference]: Finished difference Result 2191 states and 3228 transitions. [2020-12-22 08:45:41,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:45:41,883 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 69 [2020-12-22 08:45:41,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:41,889 INFO L225 Difference]: With dead ends: 2191 [2020-12-22 08:45:41,889 INFO L226 Difference]: Without dead ends: 2185 [2020-12-22 08:45:41,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2020-12-22 08:45:41,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2185 states. [2020-12-22 08:45:42,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2185 to 350. [2020-12-22 08:45:42,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-12-22 08:45:42,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 472 transitions. [2020-12-22 08:45:42,182 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 472 transitions. Word has length 69 [2020-12-22 08:45:42,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:42,182 INFO L481 AbstractCegarLoop]: Abstraction has 350 states and 472 transitions. [2020-12-22 08:45:42,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 08:45:42,182 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 472 transitions. [2020-12-22 08:45:42,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:45:42,183 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:42,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:45:42,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 08:45:42,184 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:42,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:42,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1637741865, now seen corresponding path program 1 times [2020-12-22 08:45:42,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:42,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982081817] [2020-12-22 08:45:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat