/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/array-examples/standard_copy9_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 02:54:33,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 02:54:33,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 02:54:33,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 02:54:33,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 02:54:33,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 02:54:33,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 02:54:33,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 02:54:33,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 02:54:33,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 02:54:33,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 02:54:33,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 02:54:33,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 02:54:33,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 02:54:33,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 02:54:33,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 02:54:33,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 02:54:33,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 02:54:33,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 02:54:33,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 02:54:33,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 02:54:33,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 02:54:33,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 02:54:33,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 02:54:33,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 02:54:33,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 02:54:33,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 02:54:33,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 02:54:33,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 02:54:33,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 02:54:33,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 02:54:33,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 02:54:33,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 02:54:33,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 02:54:33,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 02:54:33,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 02:54:33,824 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 02:54:33,844 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 02:54:33,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 02:54:33,845 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 02:54:33,845 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 02:54:33,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 02:54:33,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 02:54:33,846 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 02:54:33,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 02:54:33,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 02:54:33,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 02:54:33,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 02:54:33,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 02:54:33,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 02:54:33,847 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 02:54:33,847 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 02:54:33,847 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 02:54:33,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 02:54:33,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 02:54:33,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 02:54:33,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 02:54:33,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 02:54:33,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:54:33,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 02:54:33,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 02:54:33,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 02:54:33,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 02:54:33,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 02:54:33,849 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 02:54:33,849 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 02:54:33,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 02:54:33,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 02:54:33,849 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 02:54:33,850 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 02:54:33,850 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 02:54:34,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 02:54:34,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 02:54:34,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 02:54:34,124 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 02:54:34,125 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 02:54:34,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy9_ground-2.i [2022-01-11 02:54:34,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e417f122/d9da371d4eea40a0a28db5be85143c6a/FLAGe6d7d9cb8 [2022-01-11 02:54:34,593 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 02:54:34,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy9_ground-2.i [2022-01-11 02:54:34,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e417f122/d9da371d4eea40a0a28db5be85143c6a/FLAGe6d7d9cb8 [2022-01-11 02:54:34,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e417f122/d9da371d4eea40a0a28db5be85143c6a [2022-01-11 02:54:34,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 02:54:34,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 02:54:34,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 02:54:34,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 02:54:34,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 02:54:34,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:54:34" (1/1) ... [2022-01-11 02:54:34,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@581b1cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:54:34, skipping insertion in model container [2022-01-11 02:54:34,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:54:34" (1/1) ... [2022-01-11 02:54:34,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 02:54:35,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 02:54:35,158 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy9_ground-2.i[816,829] [2022-01-11 02:54:35,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:54:35,197 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 02:54:35,206 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy9_ground-2.i[816,829] [2022-01-11 02:54:35,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:54:35,233 INFO L208 MainTranslator]: Completed translation [2022-01-11 02:54:35,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:54:35 WrapperNode [2022-01-11 02:54:35,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 02:54:35,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 02:54:35,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 02:54:35,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 02:54:35,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:54:35" (1/1) ... [2022-01-11 02:54:35,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:54:35" (1/1) ... [2022-01-11 02:54:35,267 INFO L137 Inliner]: procedures = 18, calls = 58, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 191 [2022-01-11 02:54:35,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 02:54:35,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 02:54:35,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 02:54:35,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 02:54:35,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:54:35" (1/1) ... [2022-01-11 02:54:35,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:54:35" (1/1) ... [2022-01-11 02:54:35,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:54:35" (1/1) ... [2022-01-11 02:54:35,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:54:35" (1/1) ... [2022-01-11 02:54:35,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:54:35" (1/1) ... [2022-01-11 02:54:35,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:54:35" (1/1) ... [2022-01-11 02:54:35,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:54:35" (1/1) ... [2022-01-11 02:54:35,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 02:54:35,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 02:54:35,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 02:54:35,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 02:54:35,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:54:35" (1/1) ... [2022-01-11 02:54:35,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:54:35,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:54:35,327 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 02:54:35,329 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 02:54:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 02:54:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 02:54:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 02:54:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 02:54:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 02:54:35,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 02:54:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 02:54:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 02:54:35,451 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 02:54:35,453 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 02:54:35,838 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 02:54:35,856 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 02:54:35,856 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-11 02:54:35,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:54:35 BoogieIcfgContainer [2022-01-11 02:54:35,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 02:54:35,859 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 02:54:35,859 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 02:54:35,860 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 02:54:35,863 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:54:35" (1/1) ... [2022-01-11 02:54:36,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:54:36 BasicIcfg [2022-01-11 02:54:36,029 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 02:54:36,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 02:54:36,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 02:54:36,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 02:54:36,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:54:34" (1/4) ... [2022-01-11 02:54:36,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce1b3e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:54:36, skipping insertion in model container [2022-01-11 02:54:36,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:54:35" (2/4) ... [2022-01-11 02:54:36,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce1b3e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:54:36, skipping insertion in model container [2022-01-11 02:54:36,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:54:35" (3/4) ... [2022-01-11 02:54:36,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce1b3e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:54:36, skipping insertion in model container [2022-01-11 02:54:36,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:54:36" (4/4) ... [2022-01-11 02:54:36,036 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copy9_ground-2.iTransformedIcfg [2022-01-11 02:54:36,042 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 02:54:36,042 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 02:54:36,092 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 02:54:36,102 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 02:54:36,102 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 02:54:36,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.6) internal successors, (64), 41 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:36,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-11 02:54:36,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:54:36,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:54:36,122 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:54:36,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:54:36,126 INFO L85 PathProgramCache]: Analyzing trace with hash 767431332, now seen corresponding path program 1 times [2022-01-11 02:54:36,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:54:36,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960528229] [2022-01-11 02:54:36,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:54:36,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:54:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:54:36,398 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 02:54:36,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:54:36,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960528229] [2022-01-11 02:54:36,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960528229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:54:36,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:54:36,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 02:54:36,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149592605] [2022-01-11 02:54:36,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:54:36,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 02:54:36,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:54:36,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 02:54:36,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:54:36,433 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 1.6) internal successors, (64), 41 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:36,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:54:36,455 INFO L93 Difference]: Finished difference Result 80 states and 122 transitions. [2022-01-11 02:54:36,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 02:54:36,457 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-11 02:54:36,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:54:36,464 INFO L225 Difference]: With dead ends: 80 [2022-01-11 02:54:36,464 INFO L226 Difference]: Without dead ends: 38 [2022-01-11 02:54:36,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:54:36,469 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:54:36,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:54:36,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-11 02:54:36,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-01-11 02:54:36,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:36,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2022-01-11 02:54:36,501 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 25 [2022-01-11 02:54:36,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:54:36,502 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2022-01-11 02:54:36,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:36,503 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2022-01-11 02:54:36,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-11 02:54:36,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:54:36,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:54:36,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 02:54:36,504 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:54:36,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:54:36,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1256958099, now seen corresponding path program 1 times [2022-01-11 02:54:36,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:54:36,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807435891] [2022-01-11 02:54:36,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:54:36,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:54:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:54:36,726 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 02:54:36,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:54:36,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807435891] [2022-01-11 02:54:36,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807435891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:54:36,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:54:36,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 02:54:36,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651250399] [2022-01-11 02:54:36,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:54:36,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 02:54:36,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:54:36,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 02:54:36,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 02:54:36,730 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:36,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:54:36,751 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2022-01-11 02:54:36,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 02:54:36,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-11 02:54:36,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:54:36,752 INFO L225 Difference]: With dead ends: 74 [2022-01-11 02:54:36,752 INFO L226 Difference]: Without dead ends: 40 [2022-01-11 02:54:36,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 02:54:36,758 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 1 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:54:36,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 90 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:54:36,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-11 02:54:36,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-01-11 02:54:36,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:36,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2022-01-11 02:54:36,771 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 25 [2022-01-11 02:54:36,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:54:36,772 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2022-01-11 02:54:36,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:36,775 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2022-01-11 02:54:36,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-11 02:54:36,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:54:36,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:54:36,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 02:54:36,780 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:54:36,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:54:36,781 INFO L85 PathProgramCache]: Analyzing trace with hash -321605653, now seen corresponding path program 1 times [2022-01-11 02:54:36,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:54:36,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232417233] [2022-01-11 02:54:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:54:36,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:54:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:54:36,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 02:54:36,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:54:36,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232417233] [2022-01-11 02:54:36,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232417233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:54:36,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:54:36,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 02:54:36,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764889916] [2022-01-11 02:54:36,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:54:36,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 02:54:36,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:54:36,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 02:54:36,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 02:54:36,950 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:37,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:54:37,118 INFO L93 Difference]: Finished difference Result 88 states and 115 transitions. [2022-01-11 02:54:37,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 02:54:37,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-11 02:54:37,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:54:37,121 INFO L225 Difference]: With dead ends: 88 [2022-01-11 02:54:37,121 INFO L226 Difference]: Without dead ends: 57 [2022-01-11 02:54:37,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 02:54:37,122 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 02:54:37,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 41 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 02:54:37,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-11 02:54:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2022-01-11 02:54:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:37,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2022-01-11 02:54:37,129 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 27 [2022-01-11 02:54:37,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:54:37,129 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2022-01-11 02:54:37,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:37,129 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2022-01-11 02:54:37,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-11 02:54:37,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:54:37,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:54:37,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 02:54:37,131 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:54:37,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:54:37,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1270917817, now seen corresponding path program 1 times [2022-01-11 02:54:37,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:54:37,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414005948] [2022-01-11 02:54:37,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:54:37,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:54:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:54:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 02:54:37,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:54:37,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414005948] [2022-01-11 02:54:37,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414005948] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:54:37,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924235195] [2022-01-11 02:54:37,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:54:37,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:54:37,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:54:37,386 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 02:54:37,391 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 02:54:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:54:37,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-11 02:54:37,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:54:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 02:54:38,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:54:38,341 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 02:54:38,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924235195] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:54:38,342 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:54:38,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-11 02:54:38,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407030100] [2022-01-11 02:54:38,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:54:38,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 02:54:38,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:54:38,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 02:54:38,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:54:38,344 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:38,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:54:38,458 INFO L93 Difference]: Finished difference Result 97 states and 119 transitions. [2022-01-11 02:54:38,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 02:54:38,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-01-11 02:54:38,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:54:38,464 INFO L225 Difference]: With dead ends: 97 [2022-01-11 02:54:38,464 INFO L226 Difference]: Without dead ends: 54 [2022-01-11 02:54:38,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-11 02:54:38,466 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 5 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:54:38,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 178 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:54:38,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-11 02:54:38,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-01-11 02:54:38,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:38,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2022-01-11 02:54:38,472 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 45 [2022-01-11 02:54:38,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:54:38,473 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2022-01-11 02:54:38,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:38,473 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2022-01-11 02:54:38,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-11 02:54:38,474 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:54:38,474 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:38,490 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 02:54:38,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:54:38,685 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:54:38,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:54:38,685 INFO L85 PathProgramCache]: Analyzing trace with hash 100916403, now seen corresponding path program 2 times [2022-01-11 02:54:38,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:54:38,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433623400] [2022-01-11 02:54:38,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:54:38,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:54:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:54:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-11 02:54:38,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:54:38,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433623400] [2022-01-11 02:54:38,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433623400] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:54:38,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970047380] [2022-01-11 02:54:38,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 02:54:38,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:54:38,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:54:38,861 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 02:54:38,863 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 02:54:39,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 02:54:39,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:54:39,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-11 02:54:39,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:54:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-11 02:54:39,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:54:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-11 02:54:39,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970047380] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:54:39,719 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:54:39,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2022-01-11 02:54:39,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694172650] [2022-01-11 02:54:39,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:54:39,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 02:54:39,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:54:39,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 02:54:39,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-11 02:54:39,721 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:40,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:54:40,389 INFO L93 Difference]: Finished difference Result 147 states and 192 transitions. [2022-01-11 02:54:40,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 02:54:40,389 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-11 02:54:40,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:54:40,390 INFO L225 Difference]: With dead ends: 147 [2022-01-11 02:54:40,390 INFO L226 Difference]: Without dead ends: 108 [2022-01-11 02:54:40,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-01-11 02:54:40,391 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 77 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-11 02:54:40,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 107 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-11 02:54:40,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-01-11 02:54:40,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-01-11 02:54:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.102803738317757) internal successors, (118), 107 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:40,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions. [2022-01-11 02:54:40,406 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 51 [2022-01-11 02:54:40,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:54:40,406 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 118 transitions. [2022-01-11 02:54:40,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:40,407 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions. [2022-01-11 02:54:40,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-11 02:54:40,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:54:40,409 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 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 02:54:40,417 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 02:54:40,615 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 02:54:40,615 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:54:40,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:54:40,616 INFO L85 PathProgramCache]: Analyzing trace with hash 382746781, now seen corresponding path program 3 times [2022-01-11 02:54:40,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:54:40,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600911732] [2022-01-11 02:54:40,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:54:40,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:54:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:54:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-01-11 02:54:41,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:54:41,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600911732] [2022-01-11 02:54:41,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600911732] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:54:41,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059838213] [2022-01-11 02:54:41,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 02:54:41,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:54:41,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:54:41,226 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 02:54:41,255 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 02:55:17,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-11 02:55:17,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:55:17,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 1301 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-11 02:55:17,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:55:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 15 refuted. 1 times theorem prover too weak. 144 trivial. 0 not checked. [2022-01-11 02:55:33,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:55:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-01-11 02:55:40,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059838213] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:55:40,511 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:55:40,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 10] total 20 [2022-01-11 02:55:40,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154987189] [2022-01-11 02:55:40,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:55:40,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-11 02:55:40,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:55:40,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-11 02:55:40,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=258, Unknown=9, NotChecked=0, Total=380 [2022-01-11 02:55:40,513 INFO L87 Difference]: Start difference. First operand 108 states and 118 transitions. Second operand has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)