/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_SUM.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:00:33,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:00:33,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:00:33,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:00:33,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:00:33,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:00:33,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:00:33,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:00:33,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:00:33,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:00:33,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:00:33,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:00:33,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:00:33,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:00:33,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:00:33,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:00:33,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:00:33,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:00:33,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:00:33,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:00:33,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:00:33,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:00:33,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:00:33,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:00:33,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 06:00:33,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:00:33,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:00:33,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:00:33,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:00:33,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:00:33,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:00:33,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:00:33,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:00:33,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:00:33,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:00:33,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:00:33,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:00:33,828 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:00:33,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:00:33,829 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:00:33,829 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:00:33,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:00:33,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:00:33,830 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:00:33,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:00:33,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:00:33,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:00:33,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:00:33,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:00:33,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:00:33,832 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:00:33,832 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:00:33,832 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:00:33,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:00:33,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:00:33,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:00:33,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:00:33,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:00:33,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:00:33,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:00:33,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:00:33,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:00:33,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:00:33,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:00:33,834 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:00:33,834 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:00:33,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:00:33,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:00:33,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:00:33,836 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:00:33,836 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:00:34,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:00:34,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:00:34,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:00:34,100 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:00:34,101 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:00:34,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2022-01-11 06:00:34,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a30530ee/a8cc78eb745543f19cbeedc3c7b418c7/FLAG1d9edf169 [2022-01-11 06:00:34,569 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:00:34,570 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2022-01-11 06:00:34,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a30530ee/a8cc78eb745543f19cbeedc3c7b418c7/FLAG1d9edf169 [2022-01-11 06:00:34,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a30530ee/a8cc78eb745543f19cbeedc3c7b418c7 [2022-01-11 06:00:34,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:00:34,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:00:34,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:00:34,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:00:34,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:00:34,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:00:34" (1/1) ... [2022-01-11 06:00:34,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48cd39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:00:34, skipping insertion in model container [2022-01-11 06:00:34,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:00:34" (1/1) ... [2022-01-11 06:00:34,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:00:34,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:00:34,764 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_2calls_8-1.c[947,960] [2022-01-11 06:00:34,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:00:34,777 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:00:34,807 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_2calls_8-1.c[947,960] [2022-01-11 06:00:34,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:00:34,821 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:00:34,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:00:34 WrapperNode [2022-01-11 06:00:34,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:00:34,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:00:34,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:00:34,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:00:34,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:00:34" (1/1) ... [2022-01-11 06:00:34,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:00:34" (1/1) ... [2022-01-11 06:00:34,848 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-01-11 06:00:34,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:00:34,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:00:34,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:00:34,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:00:34,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:00:34" (1/1) ... [2022-01-11 06:00:34,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:00:34" (1/1) ... [2022-01-11 06:00:34,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:00:34" (1/1) ... [2022-01-11 06:00:34,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:00:34" (1/1) ... [2022-01-11 06:00:34,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:00:34" (1/1) ... [2022-01-11 06:00:34,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:00:34" (1/1) ... [2022-01-11 06:00:34,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:00:34" (1/1) ... [2022-01-11 06:00:34,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:00:34,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:00:34,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:00:34,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:00:34,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:00:34" (1/1) ... [2022-01-11 06:00:34,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:00:34,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:00:34,914 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 06:00:34,916 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 06:00:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:00:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:00:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-01-11 06:00:34,949 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-01-11 06:00:34,950 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-01-11 06:00:34,950 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-01-11 06:00:34,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:00:34,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:00:35,011 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:00:35,012 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:00:35,111 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:00:35,117 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:00:35,117 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:00:35,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:00:35 BoogieIcfgContainer [2022-01-11 06:00:35,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:00:35,119 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:00:35,120 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:00:35,122 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:00:35,125 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:00:35" (1/1) ... [2022-01-11 06:00:35,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:00:35 BasicIcfg [2022-01-11 06:00:35,212 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:00:35,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:00:35,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:00:35,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:00:35,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:00:34" (1/4) ... [2022-01-11 06:00:35,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad575ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:00:35, skipping insertion in model container [2022-01-11 06:00:35,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:00:34" (2/4) ... [2022-01-11 06:00:35,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad575ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:00:35, skipping insertion in model container [2022-01-11 06:00:35,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:00:35" (3/4) ... [2022-01-11 06:00:35,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad575ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:00:35, skipping insertion in model container [2022-01-11 06:00:35,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:00:35" (4/4) ... [2022-01-11 06:00:35,219 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.cTransformedIcfg [2022-01-11 06:00:35,224 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:00:35,224 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:00:35,273 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:00:35,280 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 06:00:35,280 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:00:35,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-11 06:00:35,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 06:00:35,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:00:35,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:00:35,297 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:00:35,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:00:35,300 INFO L85 PathProgramCache]: Analyzing trace with hash 409070419, now seen corresponding path program 1 times [2022-01-11 06:00:35,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:00:35,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962996173] [2022-01-11 06:00:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:00:35,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:00:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:35,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 06:00:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:35,535 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 06:00:35,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:00:35,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962996173] [2022-01-11 06:00:35,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962996173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:00:35,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:00:35,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:00:35,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975306771] [2022-01-11 06:00:35,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:00:35,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:00:35,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:00:35,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:00:35,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:00:35,567 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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 06:00:35,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:00:35,637 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-01-11 06:00:35,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:00:35,639 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 06:00:35,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:00:35,646 INFO L225 Difference]: With dead ends: 37 [2022-01-11 06:00:35,646 INFO L226 Difference]: Without dead ends: 25 [2022-01-11 06:00:35,648 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 06:00:35,652 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:00:35,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 82 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:00:35,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-11 06:00:35,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-11 06:00:35,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-11 06:00:35,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-01-11 06:00:35,686 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 10 [2022-01-11 06:00:35,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:00:35,687 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-01-11 06:00:35,687 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 06:00:35,687 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-01-11 06:00:35,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 06:00:35,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:00:35,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:00:35,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:00:35,689 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:00:35,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:00:35,690 INFO L85 PathProgramCache]: Analyzing trace with hash 697486659, now seen corresponding path program 1 times [2022-01-11 06:00:35,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:00:35,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498762535] [2022-01-11 06:00:35,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:00:35,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:00:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:35,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 06:00:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:35,784 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 06:00:35,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:00:35,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498762535] [2022-01-11 06:00:35,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498762535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:00:35,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:00:35,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:00:35,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570112058] [2022-01-11 06:00:35,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:00:35,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:00:35,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:00:35,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:00:35,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:00:35,790 INFO L87 Difference]: Start difference. First operand 25 states and 32 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 06:00:35,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:00:35,889 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2022-01-11 06:00:35,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:00:35,890 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 06:00:35,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:00:35,891 INFO L225 Difference]: With dead ends: 31 [2022-01-11 06:00:35,891 INFO L226 Difference]: Without dead ends: 27 [2022-01-11 06:00:35,892 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 06:00:35,893 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:00:35,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 72 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:00:35,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-11 06:00:35,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-01-11 06:00:35,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-11 06:00:35,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-01-11 06:00:35,900 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 11 [2022-01-11 06:00:35,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:00:35,901 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-01-11 06:00:35,901 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 06:00:35,901 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-01-11 06:00:35,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 06:00:35,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:00:35,902 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:00:35,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:00:35,903 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:00:35,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:00:35,903 INFO L85 PathProgramCache]: Analyzing trace with hash 63510830, now seen corresponding path program 1 times [2022-01-11 06:00:35,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:00:35,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660686614] [2022-01-11 06:00:35,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:00:35,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:00:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:36,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 06:00:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:36,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:36,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 06:00:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 06:00:36,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:00:36,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660686614] [2022-01-11 06:00:36,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660686614] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:00:36,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418427215] [2022-01-11 06:00:36,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:00:36,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:00:36,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:00:36,220 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 06:00:36,232 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 06:00:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:36,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-11 06:00:36,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 06:00:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 06:00:36,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 06:00:36,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418427215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:00:36,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 06:00:36,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2022-01-11 06:00:36,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445682518] [2022-01-11 06:00:36,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:00:36,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 06:00:36,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:00:36,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 06:00:36,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-11 06:00:36,615 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-11 06:00:36,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:00:36,758 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-01-11 06:00:36,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 06:00:36,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-01-11 06:00:36,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:00:36,762 INFO L225 Difference]: With dead ends: 36 [2022-01-11 06:00:36,762 INFO L226 Difference]: Without dead ends: 32 [2022-01-11 06:00:36,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-11 06:00:36,766 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:00:36,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 78 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:00:36,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-11 06:00:36,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2022-01-11 06:00:36,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-01-11 06:00:36,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-01-11 06:00:36,784 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 22 [2022-01-11 06:00:36,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:00:36,785 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-01-11 06:00:36,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-11 06:00:36,785 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-01-11 06:00:36,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-11 06:00:36,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:00:36,787 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:00:36,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 06:00:36,993 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 06:00:36,993 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:00:36,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:00:36,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1726490069, now seen corresponding path program 1 times [2022-01-11 06:00:36,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:00:36,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484471787] [2022-01-11 06:00:36,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:00:36,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:00:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:37,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 06:00:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:37,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:37,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 06:00:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:37,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 06:00:37,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:00:37,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484471787] [2022-01-11 06:00:37,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484471787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:00:37,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:00:37,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 06:00:37,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993627092] [2022-01-11 06:00:37,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:00:37,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 06:00:37,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:00:37,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 06:00:37,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:00:37,183 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-11 06:00:37,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:00:37,303 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2022-01-11 06:00:37,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 06:00:37,308 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-01-11 06:00:37,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:00:37,311 INFO L225 Difference]: With dead ends: 41 [2022-01-11 06:00:37,311 INFO L226 Difference]: Without dead ends: 37 [2022-01-11 06:00:37,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-11 06:00:37,319 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:00:37,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 90 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:00:37,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-11 06:00:37,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2022-01-11 06:00:37,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2022-01-11 06:00:37,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2022-01-11 06:00:37,326 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 43 transitions. Word has length 23 [2022-01-11 06:00:37,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:00:37,326 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 43 transitions. [2022-01-11 06:00:37,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-11 06:00:37,327 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2022-01-11 06:00:37,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-11 06:00:37,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:00:37,328 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:00:37,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:00:37,328 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:00:37,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:00:37,329 INFO L85 PathProgramCache]: Analyzing trace with hash -312577904, now seen corresponding path program 1 times [2022-01-11 06:00:37,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:00:37,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658165325] [2022-01-11 06:00:37,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:00:37,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:00:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:37,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 06:00:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:37,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:37,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 06:00:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:37,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:37,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 06:00:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 06:00:37,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:00:37,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658165325] [2022-01-11 06:00:37,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658165325] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:00:37,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786339451] [2022-01-11 06:00:37,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:00:37,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:00:37,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:00:37,781 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 06:00:37,783 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 06:00:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:37,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-11 06:00:37,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 06:00:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-11 06:00:38,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 06:00:38,630 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-11 06:00:38,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786339451] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 06:00:38,631 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 06:00:38,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 20 [2022-01-11 06:00:38,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356597738] [2022-01-11 06:00:38,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 06:00:38,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-11 06:00:38,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:00:38,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-11 06:00:38,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-01-11 06:00:38,633 INFO L87 Difference]: Start difference. First operand 31 states and 43 transitions. Second operand has 20 states, 16 states have (on average 2.5625) internal successors, (41), 19 states have internal predecessors, (41), 9 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (12), 5 states have call predecessors, (12), 9 states have call successors, (12) [2022-01-11 06:00:39,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:00:39,131 INFO L93 Difference]: Finished difference Result 71 states and 111 transitions. [2022-01-11 06:00:39,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 06:00:39,132 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 2.5625) internal successors, (41), 19 states have internal predecessors, (41), 9 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (12), 5 states have call predecessors, (12), 9 states have call successors, (12) Word has length 34 [2022-01-11 06:00:39,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:00:39,133 INFO L225 Difference]: With dead ends: 71 [2022-01-11 06:00:39,133 INFO L226 Difference]: Without dead ends: 43 [2022-01-11 06:00:39,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2022-01-11 06:00:39,135 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 45 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 06:00:39,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 196 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 06:00:39,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-11 06:00:39,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2022-01-11 06:00:39,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (18), 9 states have call predecessors, (18), 7 states have call successors, (18) [2022-01-11 06:00:39,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2022-01-11 06:00:39,144 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 34 [2022-01-11 06:00:39,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:00:39,145 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2022-01-11 06:00:39,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 2.5625) internal successors, (41), 19 states have internal predecessors, (41), 9 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (12), 5 states have call predecessors, (12), 9 states have call successors, (12) [2022-01-11 06:00:39,146 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2022-01-11 06:00:39,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-11 06:00:39,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:00:39,150 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:00:39,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 06:00:39,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:00:39,374 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:00:39,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:00:39,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1907496380, now seen corresponding path program 1 times [2022-01-11 06:00:39,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:00:39,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37971759] [2022-01-11 06:00:39,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:00:39,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:00:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:39,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 06:00:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:39,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:39,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:39,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 06:00:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:39,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 06:00:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:39,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:39,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 06:00:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-11 06:00:39,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:00:39,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37971759] [2022-01-11 06:00:39,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37971759] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:00:39,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432537677] [2022-01-11 06:00:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:00:39,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:00:39,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:00:39,618 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 06:00:39,647 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 06:00:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:39,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 06:00:39,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 06:00:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-11 06:00:39,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 06:00:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-11 06:00:40,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432537677] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 06:00:40,482 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 06:00:40,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 19 [2022-01-11 06:00:40,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165834551] [2022-01-11 06:00:40,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 06:00:40,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-11 06:00:40,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:00:40,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-11 06:00:40,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-01-11 06:00:40,484 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand has 19 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 17 states have internal predecessors, (47), 12 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (17), 11 states have call predecessors, (17), 12 states have call successors, (17) [2022-01-11 06:00:40,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:00:40,895 INFO L93 Difference]: Finished difference Result 105 states and 181 transitions. [2022-01-11 06:00:40,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-11 06:00:40,896 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 17 states have internal predecessors, (47), 12 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (17), 11 states have call predecessors, (17), 12 states have call successors, (17) Word has length 48 [2022-01-11 06:00:40,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:00:40,897 INFO L225 Difference]: With dead ends: 105 [2022-01-11 06:00:40,897 INFO L226 Difference]: Without dead ends: 58 [2022-01-11 06:00:40,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 97 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-01-11 06:00:40,899 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 42 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 06:00:40,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 183 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 06:00:40,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-11 06:00:40,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 45. [2022-01-11 06:00:40,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 8 states have call successors, (8), 3 states have call predecessors, (8), 9 states have return successors, (24), 11 states have call predecessors, (24), 8 states have call successors, (24) [2022-01-11 06:00:40,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 63 transitions. [2022-01-11 06:00:40,909 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 63 transitions. Word has length 48 [2022-01-11 06:00:40,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:00:40,910 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 63 transitions. [2022-01-11 06:00:40,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 17 states have internal predecessors, (47), 12 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (17), 11 states have call predecessors, (17), 12 states have call successors, (17) [2022-01-11 06:00:40,910 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 63 transitions. [2022-01-11 06:00:40,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 06:00:40,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:00:40,912 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:00:40,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 06:00:41,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:00:41,138 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:00:41,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:00:41,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1166758002, now seen corresponding path program 2 times [2022-01-11 06:00:41,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:00:41,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604162427] [2022-01-11 06:00:41,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:00:41,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:00:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:41,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 06:00:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:41,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:41,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:41,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:41,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 06:00:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:41,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-11 06:00:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:41,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-11 06:00:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:41,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:41,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:41,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 06:00:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:41,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-11 06:00:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:41,663 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 18 proven. 41 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-01-11 06:00:41,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:00:41,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604162427] [2022-01-11 06:00:41,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604162427] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:00:41,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540930031] [2022-01-11 06:00:41,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 06:00:41,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:00:41,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:00:41,665 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 06:00:41,667 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 06:00:41,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 06:00:41,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 06:00:41,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-11 06:00:41,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 06:00:42,546 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-11 06:00:42,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 06:00:44,994 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 35 proven. 13 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-11 06:00:44,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540930031] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 06:00:44,995 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 06:00:44,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 26 [2022-01-11 06:00:44,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116230958] [2022-01-11 06:00:44,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 06:00:44,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-11 06:00:44,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:00:44,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-11 06:00:44,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2022-01-11 06:00:44,997 INFO L87 Difference]: Start difference. First operand 45 states and 63 transitions. Second operand has 26 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 25 states have internal predecessors, (56), 11 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (21), 11 states have call predecessors, (21), 11 states have call successors, (21) [2022-01-11 06:00:47,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:00:47,347 INFO L93 Difference]: Finished difference Result 111 states and 179 transitions. [2022-01-11 06:00:47,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-11 06:00:47,348 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 25 states have internal predecessors, (56), 11 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (21), 11 states have call predecessors, (21), 11 states have call successors, (21) Word has length 70 [2022-01-11 06:00:47,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:00:47,349 INFO L225 Difference]: With dead ends: 111 [2022-01-11 06:00:47,349 INFO L226 Difference]: Without dead ends: 69 [2022-01-11 06:00:47,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 147 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2022-01-11 06:00:47,351 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 75 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-11 06:00:47,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 255 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-11 06:00:47,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-11 06:00:47,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 56. [2022-01-11 06:00:47,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 36 states have internal predecessors, (39), 11 states have call successors, (11), 5 states have call predecessors, (11), 10 states have return successors, (28), 14 states have call predecessors, (28), 11 states have call successors, (28) [2022-01-11 06:00:47,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2022-01-11 06:00:47,361 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 70 [2022-01-11 06:00:47,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:00:47,361 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2022-01-11 06:00:47,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 25 states have internal predecessors, (56), 11 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (21), 11 states have call predecessors, (21), 11 states have call successors, (21) [2022-01-11 06:00:47,362 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2022-01-11 06:00:47,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-11 06:00:47,363 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:00:47,363 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:00:47,386 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 06:00:47,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:00:47,581 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:00:47,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:00:47,581 INFO L85 PathProgramCache]: Analyzing trace with hash 2090305454, now seen corresponding path program 1 times [2022-01-11 06:00:47,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:00:47,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256718125] [2022-01-11 06:00:47,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:00:47,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:00:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:47,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 06:00:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:47,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:47,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:47,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 06:00:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:47,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 06:00:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:47,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 06:00:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:47,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:47,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:47,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 06:00:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:47,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 06:00:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 17 proven. 36 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-11 06:00:47,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:00:47,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256718125] [2022-01-11 06:00:47,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256718125] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:00:47,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624478927] [2022-01-11 06:00:47,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:00:47,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:00:47,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:00:47,811 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 06:00:47,812 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 06:00:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:47,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 06:00:47,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 06:00:48,137 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 17 proven. 36 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-11 06:00:48,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 06:00:48,699 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 17 proven. 38 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-01-11 06:00:48,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624478927] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 06:00:48,699 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 06:00:48,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2022-01-11 06:00:48,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576385263] [2022-01-11 06:00:48,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 06:00:48,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-11 06:00:48,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:00:48,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-11 06:00:48,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-01-11 06:00:48,701 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 18 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 17 states have internal predecessors, (50), 10 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 11 states have call predecessors, (18), 10 states have call successors, (18) [2022-01-11 06:00:48,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:00:48,984 INFO L93 Difference]: Finished difference Result 135 states and 219 transitions. [2022-01-11 06:00:48,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 06:00:48,985 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 17 states have internal predecessors, (50), 10 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 11 states have call predecessors, (18), 10 states have call successors, (18) Word has length 74 [2022-01-11 06:00:48,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:00:48,987 INFO L225 Difference]: With dead ends: 135 [2022-01-11 06:00:48,987 INFO L226 Difference]: Without dead ends: 82 [2022-01-11 06:00:48,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 154 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-01-11 06:00:48,988 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 35 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:00:48,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 165 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:00:48,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-01-11 06:00:48,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2022-01-11 06:00:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 47 states have internal predecessors, (52), 14 states have call successors, (14), 6 states have call predecessors, (14), 14 states have return successors, (44), 20 states have call predecessors, (44), 14 states have call successors, (44) [2022-01-11 06:00:49,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 110 transitions. [2022-01-11 06:00:49,001 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 110 transitions. Word has length 74 [2022-01-11 06:00:49,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:00:49,002 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 110 transitions. [2022-01-11 06:00:49,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 17 states have internal predecessors, (50), 10 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 11 states have call predecessors, (18), 10 states have call successors, (18) [2022-01-11 06:00:49,002 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 110 transitions. [2022-01-11 06:00:49,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-11 06:00:49,004 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:00:49,004 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:00:49,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-11 06:00:49,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:00:49,221 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:00:49,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:00:49,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1096975655, now seen corresponding path program 1 times [2022-01-11 06:00:49,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:00:49,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684700619] [2022-01-11 06:00:49,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:00:49,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:00:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 06:00:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 06:00:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 06:00:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 06:00:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-11 06:00:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 06:00:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 06:00:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-11 06:00:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-11 06:00:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 06:00:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 06:00:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 06:00:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 06:00:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 30 proven. 192 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2022-01-11 06:00:49,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:00:49,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684700619] [2022-01-11 06:00:49,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684700619] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:00:49,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424485194] [2022-01-11 06:00:49,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:00:49,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:00:49,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:00:49,884 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 06:00:49,906 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 06:00:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:00:50,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-11 06:00:50,100 INFO L286 TraceCheckSpWp]: Computing forward predicates...