/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:10:34,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:10:34,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:10:34,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:10:34,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:10:34,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:10:34,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:10:34,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:10:34,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:10:34,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:10:34,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:10:34,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:10:34,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:10:34,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:10:34,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:10:34,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:10:34,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:10:34,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:10:34,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:10:34,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:10:34,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:10:34,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:10:34,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:10:34,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:10:34,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:10:34,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:10:34,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:10:34,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:10:34,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:10:34,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:10:34,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:10:34,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:10:34,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:10:34,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:10:34,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:10:34,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:10:34,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:10:34,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:10:34,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:10:34,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:10:34,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:10:34,810 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:10:34,823 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:10:34,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:10:34,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:10:34,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:10:34,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:10:34,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:10:34,824 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:10:34,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:10:34,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:10:34,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:10:34,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:10:34,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:10:34,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:10:34,825 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:10:34,825 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:10:34,825 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:10:34,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:10:34,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:10:34,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:10:34,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:10:34,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:10:34,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:10:34,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:10:34,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:10:34,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:10:34,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:10:34,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:10:34,827 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:10:34,827 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:10:34,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:10:34,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:10:34,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:10:34,829 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:10:34,829 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:10:35,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:10:35,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:10:35,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:10:35,033 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:10:35,035 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:10:35,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_10-2.c [2022-01-11 00:10:35,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a262541bb/9fd9c4af8a6b4d84928490bf9f031f9d/FLAG5d091b210 [2022-01-11 00:10:35,429 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:10:35,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_10-2.c [2022-01-11 00:10:35,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a262541bb/9fd9c4af8a6b4d84928490bf9f031f9d/FLAG5d091b210 [2022-01-11 00:10:35,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a262541bb/9fd9c4af8a6b4d84928490bf9f031f9d [2022-01-11 00:10:35,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:10:35,469 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:10:35,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:10:35,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:10:35,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:10:35,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b278636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35, skipping insertion in model container [2022-01-11 00:10:35,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:10:35,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:10:35,563 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_10-2.c[743,756] [2022-01-11 00:10:35,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:10:35,613 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:10:35,623 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_10-2.c[743,756] [2022-01-11 00:10:35,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:10:35,634 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:10:35,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35 WrapperNode [2022-01-11 00:10:35,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:10:35,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:10:35,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:10:35,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:10:35,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,654 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-01-11 00:10:35,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:10:35,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:10:35,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:10:35,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:10:35,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:10:35,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:10:35,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:10:35,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:10:35,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:10:35,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:10:35,716 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 00:10:35,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 00:10:35,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:10:35,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:10:35,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:10:35,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:10:35,747 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-01-11 00:10:35,747 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-01-11 00:10:35,786 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:10:35,787 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:10:35,877 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:10:35,880 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:10:35,880 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:10:35,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:10:35 BoogieIcfgContainer [2022-01-11 00:10:35,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:10:35,882 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:10:35,882 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:10:35,885 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:10:35,887 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:10:35 BasicIcfg [2022-01-11 00:10:35,920 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:10:35,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:10:35,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:10:35,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:10:35,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:10:35" (1/4) ... [2022-01-11 00:10:35,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633194f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:10:35, skipping insertion in model container [2022-01-11 00:10:35,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (2/4) ... [2022-01-11 00:10:35,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633194f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:10:35, skipping insertion in model container [2022-01-11 00:10:35,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:10:35" (3/4) ... [2022-01-11 00:10:35,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633194f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:10:35, skipping insertion in model container [2022-01-11 00:10:35,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:10:35" (4/4) ... [2022-01-11 00:10:35,925 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_10-2.cTransformedIcfg [2022-01-11 00:10:35,928 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:10:35,928 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:10:35,953 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:10:35,957 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 00:10:35,957 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:10:35,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-11 00:10:35,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 00:10:35,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:10:35,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:10:35,969 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:10:35,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:10:35,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2142902620, now seen corresponding path program 1 times [2022-01-11 00:10:35,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:10:35,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732675248] [2022-01-11 00:10:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:35,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:10:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:36,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:10:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:10:36,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:10:36,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732675248] [2022-01-11 00:10:36,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732675248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:10:36,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:10:36,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:10:36,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646925970] [2022-01-11 00:10:36,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:10:36,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:10:36,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:10:36,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:10:36,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:10:36,231 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 00:10:36,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:10:36,299 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-01-11 00:10:36,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:10:36,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-01-11 00:10:36,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:10:36,305 INFO L225 Difference]: With dead ends: 29 [2022-01-11 00:10:36,306 INFO L226 Difference]: Without dead ends: 17 [2022-01-11 00:10:36,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:10:36,309 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 14 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:10:36,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 40 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:10:36,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-11 00:10:36,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-11 00:10:36,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-11 00:10:36,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-01-11 00:10:36,332 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2022-01-11 00:10:36,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:10:36,332 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-01-11 00:10:36,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 00:10:36,334 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-01-11 00:10:36,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 00:10:36,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:10:36,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:10:36,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:10:36,337 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:10:36,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:10:36,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1380246405, now seen corresponding path program 1 times [2022-01-11 00:10:36,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:10:36,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105505776] [2022-01-11 00:10:36,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:36,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:10:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:36,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:10:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:10:36,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:10:36,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105505776] [2022-01-11 00:10:36,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105505776] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:10:36,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:10:36,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:10:36,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241824444] [2022-01-11 00:10:36,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:10:36,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:10:36,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:10:36,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:10:36,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:10:36,409 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 00:10:36,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:10:36,442 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2022-01-11 00:10:36,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:10:36,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-01-11 00:10:36,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:10:36,443 INFO L225 Difference]: With dead ends: 23 [2022-01-11 00:10:36,443 INFO L226 Difference]: Without dead ends: 19 [2022-01-11 00:10:36,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:10:36,444 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:10:36,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 30 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:10:36,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-11 00:10:36,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-01-11 00:10:36,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-11 00:10:36,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-01-11 00:10:36,449 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2022-01-11 00:10:36,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:10:36,449 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-01-11 00:10:36,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 00:10:36,449 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-01-11 00:10:36,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 00:10:36,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:10:36,453 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:10:36,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:10:36,453 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:10:36,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:10:36,455 INFO L85 PathProgramCache]: Analyzing trace with hash -794894887, now seen corresponding path program 1 times [2022-01-11 00:10:36,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:10:36,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230762967] [2022-01-11 00:10:36,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:36,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:10:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:36,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:10:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:36,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:36,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:10:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 00:10:36,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:10:36,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230762967] [2022-01-11 00:10:36,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230762967] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:10:36,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116239539] [2022-01-11 00:10:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:36,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:36,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:10:36,793 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:10:36,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 00:10:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:36,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-11 00:10:36,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:10:37,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 00:10:37,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:10:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 00:10:37,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116239539] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:10:37,774 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:10:37,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 13 [2022-01-11 00:10:37,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205520469] [2022-01-11 00:10:37,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:10:37,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-11 00:10:37,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:10:37,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-11 00:10:37,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-11 00:10:37,776 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 13 states, 10 states have (on average 2.7) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-01-11 00:10:38,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:10:38,535 INFO L93 Difference]: Finished difference Result 46 states and 74 transitions. [2022-01-11 00:10:38,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:10:38,536 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.7) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 22 [2022-01-11 00:10:38,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:10:38,537 INFO L225 Difference]: With dead ends: 46 [2022-01-11 00:10:38,537 INFO L226 Difference]: Without dead ends: 32 [2022-01-11 00:10:38,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-01-11 00:10:38,538 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 29 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 00:10:38,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 62 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 00:10:38,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-11 00:10:38,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2022-01-11 00:10:38,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2022-01-11 00:10:38,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 38 transitions. [2022-01-11 00:10:38,545 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 38 transitions. Word has length 22 [2022-01-11 00:10:38,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:10:38,546 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 38 transitions. [2022-01-11 00:10:38,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.7) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-01-11 00:10:38,546 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 38 transitions. [2022-01-11 00:10:38,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-11 00:10:38,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:10:38,558 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:10:38,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 00:10:38,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:38,779 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:10:38,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:10:38,780 INFO L85 PathProgramCache]: Analyzing trace with hash -577495408, now seen corresponding path program 1 times [2022-01-11 00:10:38,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:10:38,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470694392] [2022-01-11 00:10:38,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:38,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:10:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:38,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:10:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:38,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:38,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:38,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:38,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:10:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-11 00:10:38,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:10:38,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470694392] [2022-01-11 00:10:38,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470694392] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:10:38,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948188814] [2022-01-11 00:10:38,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:38,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:38,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:10:38,959 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:10:39,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 00:10:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:39,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-11 00:10:39,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:10:39,214 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-11 00:10:39,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:10:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-11 00:10:39,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948188814] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:10:39,432 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:10:39,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2022-01-11 00:10:39,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841908613] [2022-01-11 00:10:39,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:10:39,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-11 00:10:39,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:10:39,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-11 00:10:39,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-01-11 00:10:39,433 INFO L87 Difference]: Start difference. First operand 27 states and 38 transitions. Second operand has 12 states, 10 states have (on average 3.2) internal successors, (32), 12 states have internal predecessors, (32), 6 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-01-11 00:10:39,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:10:39,537 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2022-01-11 00:10:39,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 00:10:39,537 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.2) internal successors, (32), 12 states have internal predecessors, (32), 6 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) Word has length 36 [2022-01-11 00:10:39,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:10:39,538 INFO L225 Difference]: With dead ends: 43 [2022-01-11 00:10:39,538 INFO L226 Difference]: Without dead ends: 39 [2022-01-11 00:10:39,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-01-11 00:10:39,539 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:10:39,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 58 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:10:39,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-11 00:10:39,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 29. [2022-01-11 00:10:39,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2022-01-11 00:10:39,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 42 transitions. [2022-01-11 00:10:39,546 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 42 transitions. Word has length 36 [2022-01-11 00:10:39,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:10:39,547 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 42 transitions. [2022-01-11 00:10:39,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.2) internal successors, (32), 12 states have internal predecessors, (32), 6 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-01-11 00:10:39,547 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 42 transitions. [2022-01-11 00:10:39,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 00:10:39,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:10:39,548 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:10:39,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-11 00:10:39,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-11 00:10:39,749 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:10:39,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:10:39,749 INFO L85 PathProgramCache]: Analyzing trace with hash -74975079, now seen corresponding path program 2 times [2022-01-11 00:10:39,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:10:39,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199707747] [2022-01-11 00:10:39,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:39,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:10:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:39,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:10:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:39,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:39,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:39,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:39,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:10:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:40,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:40,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:40,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:40,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:10:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:40,025 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 19 proven. 74 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-01-11 00:10:40,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:10:40,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199707747] [2022-01-11 00:10:40,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199707747] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:10:40,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132354036] [2022-01-11 00:10:40,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 00:10:40,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:40,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:10:40,044 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:10:40,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 00:10:40,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 00:10:40,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:10:40,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 00:10:40,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:10:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 59 proven. 26 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-01-11 00:10:40,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:10:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 59 proven. 34 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-01-11 00:10:40,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132354036] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:10:40,688 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:10:40,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 9] total 21 [2022-01-11 00:10:40,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661041933] [2022-01-11 00:10:40,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:10:40,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-11 00:10:40,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:10:40,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-11 00:10:40,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-01-11 00:10:40,690 INFO L87 Difference]: Start difference. First operand 29 states and 42 transitions. Second operand has 21 states, 17 states have (on average 2.823529411764706) internal successors, (48), 19 states have internal predecessors, (48), 10 states have call successors, (14), 1 states have call predecessors, (14), 9 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2022-01-11 00:10:40,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:10:40,935 INFO L93 Difference]: Finished difference Result 81 states and 152 transitions. [2022-01-11 00:10:40,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:10:40,936 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.823529411764706) internal successors, (48), 19 states have internal predecessors, (48), 10 states have call successors, (14), 1 states have call predecessors, (14), 9 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) Word has length 61 [2022-01-11 00:10:40,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:10:40,937 INFO L225 Difference]: With dead ends: 81 [2022-01-11 00:10:40,937 INFO L226 Difference]: Without dead ends: 55 [2022-01-11 00:10:40,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2022-01-11 00:10:40,939 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 46 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:10:40,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 112 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:10:40,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-11 00:10:40,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2022-01-11 00:10:40,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 7 states have call successors, (7), 2 states have call predecessors, (7), 11 states have return successors, (43), 15 states have call predecessors, (43), 7 states have call successors, (43) [2022-01-11 00:10:40,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 82 transitions. [2022-01-11 00:10:40,948 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 82 transitions. Word has length 61 [2022-01-11 00:10:40,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:10:40,949 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 82 transitions. [2022-01-11 00:10:40,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.823529411764706) internal successors, (48), 19 states have internal predecessors, (48), 10 states have call successors, (14), 1 states have call predecessors, (14), 9 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2022-01-11 00:10:40,949 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 82 transitions. [2022-01-11 00:10:40,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 00:10:40,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:10:40,951 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:10:40,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-11 00:10:41,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:41,166 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:10:41,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:10:41,166 INFO L85 PathProgramCache]: Analyzing trace with hash 311221116, now seen corresponding path program 2 times [2022-01-11 00:10:41,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:10:41,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596008402] [2022-01-11 00:10:41,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:41,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:10:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:41,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:10:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:41,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:41,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:41,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:41,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:10:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:41,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-11 00:10:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:41,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-11 00:10:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:41,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:41,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:41,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:41,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:10:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:41,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-11 00:10:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:41,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-11 00:10:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 49 proven. 106 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-01-11 00:10:41,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:10:41,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596008402] [2022-01-11 00:10:41,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596008402] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:10:41,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455793123] [2022-01-11 00:10:41,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 00:10:41,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:41,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:10:41,612 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:10:41,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 00:10:41,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 00:10:41,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:10:41,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-11 00:10:41,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:10:42,440 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 152 proven. 45 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-01-11 00:10:42,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:10:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 154 proven. 23 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-01-11 00:10:43,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455793123] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:10:43,353 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:10:43,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 26 [2022-01-11 00:10:43,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467852115] [2022-01-11 00:10:43,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:10:43,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-11 00:10:43,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:10:43,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-11 00:10:43,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2022-01-11 00:10:43,355 INFO L87 Difference]: Start difference. First operand 49 states and 82 transitions. Second operand has 26 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 23 states have internal predecessors, (51), 15 states have call successors, (20), 1 states have call predecessors, (20), 10 states have return successors, (24), 12 states have call predecessors, (24), 15 states have call successors, (24) [2022-01-11 00:10:43,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:10:43,718 INFO L93 Difference]: Finished difference Result 84 states and 154 transitions. [2022-01-11 00:10:43,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 00:10:43,719 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 23 states have internal predecessors, (51), 15 states have call successors, (20), 1 states have call predecessors, (20), 10 states have return successors, (24), 12 states have call predecessors, (24), 15 states have call successors, (24) Word has length 82 [2022-01-11 00:10:43,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:10:43,719 INFO L225 Difference]: With dead ends: 84 [2022-01-11 00:10:43,719 INFO L226 Difference]: Without dead ends: 38 [2022-01-11 00:10:43,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 173 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-01-11 00:10:43,721 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 56 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:10:43,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 102 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:10:43,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-11 00:10:43,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-01-11 00:10:43,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 7 states have return successors, (18), 9 states have call predecessors, (18), 5 states have call successors, (18) [2022-01-11 00:10:43,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2022-01-11 00:10:43,726 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 82 [2022-01-11 00:10:43,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:10:43,726 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2022-01-11 00:10:43,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 23 states have internal predecessors, (51), 15 states have call successors, (20), 1 states have call predecessors, (20), 10 states have return successors, (24), 12 states have call predecessors, (24), 15 states have call successors, (24) [2022-01-11 00:10:43,727 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2022-01-11 00:10:43,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 00:10:43,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:10:43,727 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:10:43,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-11 00:10:43,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:43,928 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:10:43,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:10:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1832080039, now seen corresponding path program 3 times [2022-01-11 00:10:43,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:10:43,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329597888] [2022-01-11 00:10:43,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:43,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:10:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:43,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:10:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:10:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:10:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 34 proven. 59 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-01-11 00:10:44,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:10:44,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329597888] [2022-01-11 00:10:44,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329597888] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:10:44,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681927551] [2022-01-11 00:10:44,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 00:10:44,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:44,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:10:44,164 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:10:44,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 00:10:44,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-11 00:10:44,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:10:44,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 00:10:44,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:10:44,364 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 62 proven. 24 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-01-11 00:10:44,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:10:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 62 proven. 31 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-01-11 00:10:45,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681927551] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:10:45,022 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:10:45,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 9] total 20 [2022-01-11 00:10:45,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774601876] [2022-01-11 00:10:45,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:10:45,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-11 00:10:45,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:10:45,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-11 00:10:45,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-01-11 00:10:45,024 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 20 states, 17 states have (on average 2.823529411764706) internal successors, (48), 19 states have internal predecessors, (48), 11 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2022-01-11 00:10:45,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:10:45,490 INFO L93 Difference]: Finished difference Result 80 states and 132 transitions. [2022-01-11 00:10:45,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 00:10:45,491 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.823529411764706) internal successors, (48), 19 states have internal predecessors, (48), 11 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) Word has length 61 [2022-01-11 00:10:45,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:10:45,495 INFO L225 Difference]: With dead ends: 80 [2022-01-11 00:10:45,495 INFO L226 Difference]: Without dead ends: 48 [2022-01-11 00:10:45,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-01-11 00:10:45,499 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 52 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 00:10:45,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 99 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 00:10:45,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-11 00:10:45,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2022-01-11 00:10:45,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 6 states have call successors, (6), 3 states have call predecessors, (6), 9 states have return successors, (29), 12 states have call predecessors, (29), 6 states have call successors, (29) [2022-01-11 00:10:45,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2022-01-11 00:10:45,515 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 61 [2022-01-11 00:10:45,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:10:45,515 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2022-01-11 00:10:45,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.823529411764706) internal successors, (48), 19 states have internal predecessors, (48), 11 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2022-01-11 00:10:45,515 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2022-01-11 00:10:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-01-11 00:10:45,517 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:10:45,517 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 31, 18, 18, 18, 18, 18, 18, 13, 6, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:10:45,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-11 00:10:45,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:45,738 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:10:45,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:10:45,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1099935067, now seen corresponding path program 4 times [2022-01-11 00:10:45,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:10:45,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564620763] [2022-01-11 00:10:45,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:45,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:10:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:45,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:10:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:10:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:10:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:10:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:10:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-11 00:10:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:10:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:10:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:10:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:10:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:10:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:10:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:10:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:46,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3588 backedges. 130 proven. 542 refuted. 0 times theorem prover too weak. 2916 trivial. 0 not checked. [2022-01-11 00:10:46,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:10:46,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564620763] [2022-01-11 00:10:46,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564620763] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:10:46,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146627214] [2022-01-11 00:10:46,493 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-11 00:10:46,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:46,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:10:46,494 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:10:46,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-11 00:10:46,733 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-11 00:10:46,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:10:46,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-11 00:10:46,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:10:53,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3588 backedges. 324 proven. 333 refuted. 0 times theorem prover too weak. 2931 trivial. 0 not checked. [2022-01-11 00:10:53,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:10:54,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3588 backedges. 324 proven. 348 refuted. 0 times theorem prover too weak. 2916 trivial. 0 not checked. [2022-01-11 00:10:54,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146627214] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:10:54,995 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:10:54,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 11] total 25 [2022-01-11 00:10:54,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944255196] [2022-01-11 00:10:54,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:10:54,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-11 00:10:54,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:10:54,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-11 00:10:54,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2022-01-11 00:10:54,996 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand has 25 states, 22 states have (on average 2.590909090909091) internal successors, (57), 24 states have internal predecessors, (57), 15 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (23), 14 states have call predecessors, (23), 15 states have call successors, (23) [2022-01-11 00:10:55,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:10:55,883 INFO L93 Difference]: Finished difference Result 88 states and 161 transitions. [2022-01-11 00:10:55,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-11 00:10:55,884 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 2.590909090909091) internal successors, (57), 24 states have internal predecessors, (57), 15 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (23), 14 states have call predecessors, (23), 15 states have call successors, (23) Word has length 239 [2022-01-11 00:10:55,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:10:55,885 INFO L225 Difference]: With dead ends: 88 [2022-01-11 00:10:55,885 INFO L226 Difference]: Without dead ends: 49 [2022-01-11 00:10:55,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 530 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=244, Invalid=946, Unknown=0, NotChecked=0, Total=1190 [2022-01-11 00:10:55,886 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 106 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-11 00:10:55,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 157 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-11 00:10:55,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-01-11 00:10:55,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-01-11 00:10:55,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 32 states have (on average 1.03125) internal successors, (33), 31 states have internal predecessors, (33), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (31), 13 states have call predecessors, (31), 7 states have call successors, (31) [2022-01-11 00:10:55,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2022-01-11 00:10:55,893 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 239 [2022-01-11 00:10:55,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:10:55,897 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2022-01-11 00:10:55,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 2.590909090909091) internal successors, (57), 24 states have internal predecessors, (57), 15 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (23), 14 states have call predecessors, (23), 15 states have call successors, (23) [2022-01-11 00:10:55,898 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2022-01-11 00:10:55,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-01-11 00:10:55,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:10:55,903 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:10:55,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-11 00:10:56,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:56,108 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:10:56,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:10:56,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1283440255, now seen corresponding path program 5 times [2022-01-11 00:10:56,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:10:56,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822385341] [2022-01-11 00:10:56,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:56,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:10:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:56,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:10:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:10:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:10:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-11 00:10:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:10:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:10:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-11 00:10:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-11 00:10:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:10:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:10:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:10:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:10:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-11 00:10:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:10:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:10:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-11 00:10:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:57,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6820 backedges. 202 proven. 971 refuted. 0 times theorem prover too weak. 5647 trivial. 0 not checked. [2022-01-11 00:10:57,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:10:57,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822385341] [2022-01-11 00:10:57,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822385341] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:10:57,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466659489] [2022-01-11 00:10:57,921 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-11 00:10:57,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:57,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:10:57,922 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:10:57,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-11 00:10:58,400 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2022-01-11 00:10:58,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:10:58,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-11 00:10:58,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:11:03,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6820 backedges. 3629 proven. 30 refuted. 0 times theorem prover too weak. 3161 trivial. 0 not checked. [2022-01-11 00:11:03,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:11:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6820 backedges. 505 proven. 735 refuted. 0 times theorem prover too weak. 5580 trivial. 0 not checked. [2022-01-11 00:11:04,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466659489] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:11:04,583 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:11:04,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 9] total 24 [2022-01-11 00:11:04,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941020171] [2022-01-11 00:11:04,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:11:04,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-11 00:11:04,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:11:04,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-11 00:11:04,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2022-01-11 00:11:04,585 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand has 24 states, 20 states have (on average 2.85) internal successors, (57), 21 states have internal predecessors, (57), 15 states have call successors, (22), 2 states have call predecessors, (22), 12 states have return successors, (29), 16 states have call predecessors, (29), 15 states have call successors, (29) [2022-01-11 00:11:07,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:11:07,356 INFO L93 Difference]: Finished difference Result 103 states and 218 transitions. [2022-01-11 00:11:07,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-11 00:11:07,357 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 2.85) internal successors, (57), 21 states have internal predecessors, (57), 15 states have call successors, (22), 2 states have call predecessors, (22), 12 states have return successors, (29), 16 states have call predecessors, (29), 15 states have call successors, (29) Word has length 326 [2022-01-11 00:11:07,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:11:07,358 INFO L225 Difference]: With dead ends: 103 [2022-01-11 00:11:07,358 INFO L226 Difference]: Without dead ends: 60 [2022-01-11 00:11:07,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 736 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=341, Invalid=1219, Unknown=0, NotChecked=0, Total=1560 [2022-01-11 00:11:07,359 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 115 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-11 00:11:07,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 150 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-11 00:11:07,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-11 00:11:07,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2022-01-11 00:11:07,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 12 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (30), 14 states have call predecessors, (30), 12 states have call successors, (30) [2022-01-11 00:11:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2022-01-11 00:11:07,370 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 326 [2022-01-11 00:11:07,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:11:07,371 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 79 transitions. [2022-01-11 00:11:07,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 2.85) internal successors, (57), 21 states have internal predecessors, (57), 15 states have call successors, (22), 2 states have call predecessors, (22), 12 states have return successors, (29), 16 states have call predecessors, (29), 15 states have call successors, (29) [2022-01-11 00:11:07,387 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 79 transitions. [2022-01-11 00:11:07,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-01-11 00:11:07,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:11:07,391 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:11:07,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-11 00:11:07,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:11:07,597 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:11:07,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:11:07,598 INFO L85 PathProgramCache]: Analyzing trace with hash -781103911, now seen corresponding path program 6 times [2022-01-11 00:11:07,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:11:07,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750209876] [2022-01-11 00:11:07,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:11:07,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:11:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:08,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:11:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:08,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:08,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:08,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:08,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:08,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:11:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:11:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:11:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:11:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-11 00:11:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:11:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:11:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-11 00:11:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:11:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:11:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:11:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:11:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-11 00:11:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:11:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:11:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:11:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:11:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-11 00:11:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:11:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:11:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-11 00:11:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:11:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:11:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:11:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:11:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:11:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:11:09,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6820 backedges. 210 proven. 1414 refuted. 0 times theorem prover too weak. 5196 trivial. 0 not checked. [2022-01-11 00:11:09,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:11:09,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750209876] [2022-01-11 00:11:09,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750209876] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:11:09,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138076755] [2022-01-11 00:11:09,304 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-11 00:11:09,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:11:09,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:11:09,320 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:11:09,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-11 00:11:09,946 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-01-11 00:11:09,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:11:09,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-11 00:11:09,955 INFO L286 TraceCheckSpWp]: Computing forward predicates...