/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-fpi/res2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 03:25:15,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 03:25:15,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 03:25:15,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 03:25:15,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 03:25:15,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 03:25:15,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 03:25:15,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 03:25:15,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 03:25:15,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 03:25:15,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 03:25:15,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 03:25:15,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 03:25:15,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 03:25:15,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 03:25:15,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 03:25:15,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 03:25:15,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 03:25:15,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 03:25:15,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 03:25:15,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 03:25:15,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 03:25:15,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 03:25:15,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 03:25:15,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 03:25:15,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 03:25:15,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 03:25:15,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 03:25:15,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 03:25:15,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 03:25:15,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 03:25:15,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 03:25:15,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 03:25:15,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 03:25:15,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 03:25:15,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 03:25:15,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 03:25:15,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 03:25:15,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 03:25:15,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 03:25:15,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 03:25:15,845 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 03:25:15,871 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 03:25:15,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 03:25:15,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 03:25:15,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 03:25:15,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 03:25:15,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 03:25:15,873 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 03:25:15,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 03:25:15,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 03:25:15,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 03:25:15,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 03:25:15,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 03:25:15,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 03:25:15,874 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 03:25:15,874 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 03:25:15,874 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 03:25:15,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 03:25:15,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 03:25:15,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 03:25:15,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 03:25:15,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 03:25:15,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:25:15,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 03:25:15,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 03:25:15,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 03:25:15,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 03:25:15,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 03:25:15,878 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 03:25:15,879 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 03:25:15,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 03:25:15,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 03:25:15,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 03:25:15,880 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 03:25:15,880 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 03:25:16,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 03:25:16,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 03:25:16,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 03:25:16,118 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 03:25:16,119 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 03:25:16,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2.c [2022-01-11 03:25:16,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf002290b/15a9d7ce04cc4c618b038d2bc97946ac/FLAG14e629854 [2022-01-11 03:25:16,547 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 03:25:16,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res2.c [2022-01-11 03:25:16,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf002290b/15a9d7ce04cc4c618b038d2bc97946ac/FLAG14e629854 [2022-01-11 03:25:16,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf002290b/15a9d7ce04cc4c618b038d2bc97946ac [2022-01-11 03:25:16,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 03:25:16,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 03:25:16,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 03:25:16,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 03:25:16,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 03:25:16,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:25:16" (1/1) ... [2022-01-11 03:25:16,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e7deb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:25:16, skipping insertion in model container [2022-01-11 03:25:16,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:25:16" (1/1) ... [2022-01-11 03:25:16,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 03:25:16,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 03:25:17,132 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-fpi/res2.c[587,600] [2022-01-11 03:25:17,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:25:17,159 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 03:25:17,169 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-fpi/res2.c[587,600] [2022-01-11 03:25:17,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:25:17,197 INFO L208 MainTranslator]: Completed translation [2022-01-11 03:25:17,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:25:17 WrapperNode [2022-01-11 03:25:17,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 03:25:17,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 03:25:17,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 03:25:17,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 03:25:17,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:25:17" (1/1) ... [2022-01-11 03:25:17,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:25:17" (1/1) ... [2022-01-11 03:25:17,228 INFO L137 Inliner]: procedures = 21, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 119 [2022-01-11 03:25:17,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 03:25:17,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 03:25:17,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 03:25:17,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 03:25:17,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:25:17" (1/1) ... [2022-01-11 03:25:17,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:25:17" (1/1) ... [2022-01-11 03:25:17,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:25:17" (1/1) ... [2022-01-11 03:25:17,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:25:17" (1/1) ... [2022-01-11 03:25:17,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:25:17" (1/1) ... [2022-01-11 03:25:17,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:25:17" (1/1) ... [2022-01-11 03:25:17,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:25:17" (1/1) ... [2022-01-11 03:25:17,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 03:25:17,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 03:25:17,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 03:25:17,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 03:25:17,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:25:17" (1/1) ... [2022-01-11 03:25:17,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:25:17,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:25:17,284 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 03:25:17,305 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 03:25:17,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 03:25:17,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 03:25:17,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 03:25:17,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-11 03:25:17,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-11 03:25:17,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 03:25:17,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 03:25:17,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 03:25:17,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-11 03:25:17,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 03:25:17,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 03:25:17,408 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 03:25:17,409 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 03:25:17,644 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 03:25:17,649 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 03:25:17,649 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-11 03:25:17,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:25:17 BoogieIcfgContainer [2022-01-11 03:25:17,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 03:25:17,651 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 03:25:17,651 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 03:25:17,652 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 03:25:17,655 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:25:17" (1/1) ... [2022-01-11 03:25:17,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:25:17 BasicIcfg [2022-01-11 03:25:17,807 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 03:25:17,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 03:25:17,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 03:25:17,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 03:25:17,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 03:25:16" (1/4) ... [2022-01-11 03:25:17,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ba730b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:25:17, skipping insertion in model container [2022-01-11 03:25:17,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:25:17" (2/4) ... [2022-01-11 03:25:17,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ba730b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:25:17, skipping insertion in model container [2022-01-11 03:25:17,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:25:17" (3/4) ... [2022-01-11 03:25:17,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ba730b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 03:25:17, skipping insertion in model container [2022-01-11 03:25:17,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:25:17" (4/4) ... [2022-01-11 03:25:17,815 INFO L111 eAbstractionObserver]: Analyzing ICFG res2.cTransformedIcfg [2022-01-11 03:25:17,818 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 03:25:17,818 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 03:25:17,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 03:25:17,872 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 03:25:17,872 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 03:25:17,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 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 03:25:17,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-11 03:25:17,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:25:17,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:25:17,887 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:25:17,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:25:17,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1305252440, now seen corresponding path program 1 times [2022-01-11 03:25:17,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:25:17,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535175643] [2022-01-11 03:25:17,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:25:17,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:25:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:25:18,121 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 03:25:18,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:25:18,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535175643] [2022-01-11 03:25:18,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535175643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:25:18,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:25:18,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:25:18,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887879837] [2022-01-11 03:25:18,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:25:18,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 03:25:18,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:25:18,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 03:25:18,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 03:25:18,162 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 03:25:18,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:25:18,179 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2022-01-11 03:25:18,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 03:25:18,182 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2022-01-11 03:25:18,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:25:18,188 INFO L225 Difference]: With dead ends: 56 [2022-01-11 03:25:18,189 INFO L226 Difference]: Without dead ends: 26 [2022-01-11 03:25:18,193 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 03:25:18,197 INFO L933 BasicCegarLoop]: 36 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, 36 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 03:25:18,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 03:25:18,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-11 03:25:18,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-01-11 03:25:18,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 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 03:25:18,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-01-11 03:25:18,232 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 19 [2022-01-11 03:25:18,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:25:18,233 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-01-11 03:25:18,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 03:25:18,234 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-01-11 03:25:18,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-11 03:25:18,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:25:18,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:25:18,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 03:25:18,235 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:25:18,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:25:18,237 INFO L85 PathProgramCache]: Analyzing trace with hash -617306751, now seen corresponding path program 1 times [2022-01-11 03:25:18,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:25:18,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002955435] [2022-01-11 03:25:18,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:25:18,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:25:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:25:18,508 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 03:25:18,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:25:18,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002955435] [2022-01-11 03:25:18,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002955435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:25:18,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:25:18,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 03:25:18,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973148794] [2022-01-11 03:25:18,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:25:18,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:25:18,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:25:18,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:25:18,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:25:18,513 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 03:25:20,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-11 03:25:22,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-11 03:25:22,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:25:22,794 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2022-01-11 03:25:22,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:25:22,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2022-01-11 03:25:22,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:25:22,795 INFO L225 Difference]: With dead ends: 48 [2022-01-11 03:25:22,795 INFO L226 Difference]: Without dead ends: 29 [2022-01-11 03:25:22,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:25:22,797 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-11 03:25:22,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 38 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-01-11 03:25:22,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-11 03:25:22,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-01-11 03:25:22,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 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 03:25:22,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2022-01-11 03:25:22,802 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 19 [2022-01-11 03:25:22,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:25:22,802 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2022-01-11 03:25:22,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 03:25:22,803 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2022-01-11 03:25:22,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-11 03:25:22,803 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:25:22,803 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] [2022-01-11 03:25:22,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 03:25:22,804 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:25:22,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:25:22,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1161851877, now seen corresponding path program 1 times [2022-01-11 03:25:22,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:25:22,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096857031] [2022-01-11 03:25:22,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:25:22,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:25:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:25:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 03:25:23,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:25:23,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096857031] [2022-01-11 03:25:23,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096857031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:25:23,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:25:23,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 03:25:23,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685359345] [2022-01-11 03:25:23,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:25:23,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:25:23,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:25:23,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:25:23,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:25:23,006 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 03:25:25,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-11 03:25:25,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:25:25,236 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2022-01-11 03:25:25,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:25:25,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 23 [2022-01-11 03:25:25,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:25:25,237 INFO L225 Difference]: With dead ends: 50 [2022-01-11 03:25:25,237 INFO L226 Difference]: Without dead ends: 37 [2022-01-11 03:25:25,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:25:25,239 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 03:25:25,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 18 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 03:25:25,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-11 03:25:25,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2022-01-11 03:25:25,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 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 03:25:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-01-11 03:25:25,246 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 23 [2022-01-11 03:25:25,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:25:25,246 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-01-11 03:25:25,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 03:25:25,246 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-01-11 03:25:25,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-11 03:25:25,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:25:25,247 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] [2022-01-11 03:25:25,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 03:25:25,248 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:25:25,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:25:25,248 INFO L85 PathProgramCache]: Analyzing trace with hash 303608365, now seen corresponding path program 1 times [2022-01-11 03:25:25,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:25:25,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440286121] [2022-01-11 03:25:25,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:25:25,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:25:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:25:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:25:57,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:25:57,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440286121] [2022-01-11 03:25:57,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440286121] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:25:57,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567967394] [2022-01-11 03:25:57,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:25:57,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:25:57,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:25:57,446 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 03:25:57,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process