/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/bitvector/sum02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:56:19,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:56:19,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:56:19,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 01:56:19,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 01:56:19,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 01:56:19,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 01:56:19,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 01:56:19,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 01:56:19,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 01:56:19,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 01:56:19,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 01:56:19,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:56:19,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:56:19,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:56:19,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:56:19,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:56:19,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:56:19,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:56:19,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:56:19,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:56:19,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:56:19,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:56:19,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:56:19,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 01:56:19,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 01:56:19,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 01:56:19,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 01:56:19,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 01:56:19,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 01:56:19,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 01:56:19,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 01:56:19,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 01:56:19,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 01:56:19,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 01:56:19,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 01:56:19,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 01:56:19,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 01:56:19,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:56:19,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:56:19,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:56:19,880 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 01:56:19,905 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:56:19,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:56:19,905 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:56:19,905 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:56:19,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:56:19,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:56:19,906 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:56:19,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:56:19,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:56:19,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:56:19,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:56:19,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:56:19,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:56:19,908 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:56:19,908 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:56:19,908 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:56:19,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:56:19,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:56:19,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:56:19,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:56:19,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:56:19,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:56:19,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:56:19,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:56:19,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:56:19,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:56:19,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:56:19,909 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:56:19,910 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:56:19,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:56:19,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:56:19,910 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:56:19,910 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:56:19,911 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:56:20,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:56:20,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:56:20,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:56:20,098 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:56:20,099 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:56:20,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/sum02-2.c [2022-01-11 01:56:20,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6398d460a/c3170ceeb0b8475fabd189a148417387/FLAG143702991 [2022-01-11 01:56:20,488 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:56:20,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/sum02-2.c [2022-01-11 01:56:20,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6398d460a/c3170ceeb0b8475fabd189a148417387/FLAG143702991 [2022-01-11 01:56:20,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6398d460a/c3170ceeb0b8475fabd189a148417387 [2022-01-11 01:56:20,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:56:20,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:56:20,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:56:20,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:56:20,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:56:20,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:56:20" (1/1) ... [2022-01-11 01:56:20,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b363ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:56:20, skipping insertion in model container [2022-01-11 01:56:20,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:56:20" (1/1) ... [2022-01-11 01:56:20,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:56:20,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:56:20,631 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/sum02-2.c[711,724] [2022-01-11 01:56:20,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:56:20,663 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:56:20,674 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/sum02-2.c[711,724] [2022-01-11 01:56:20,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:56:20,685 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:56:20,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:56:20 WrapperNode [2022-01-11 01:56:20,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:56:20,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:56:20,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:56:20,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:56:20,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:56:20" (1/1) ... [2022-01-11 01:56:20,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:56:20" (1/1) ... [2022-01-11 01:56:20,710 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 36 [2022-01-11 01:56:20,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:56:20,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:56:20,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:56:20,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:56:20,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:56:20" (1/1) ... [2022-01-11 01:56:20,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:56:20" (1/1) ... [2022-01-11 01:56:20,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:56:20" (1/1) ... [2022-01-11 01:56:20,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:56:20" (1/1) ... [2022-01-11 01:56:20,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:56:20" (1/1) ... [2022-01-11 01:56:20,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:56:20" (1/1) ... [2022-01-11 01:56:20,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:56:20" (1/1) ... [2022-01-11 01:56:20,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:56:20,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:56:20,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:56:20,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:56:20,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:56:20" (1/1) ... [2022-01-11 01:56:20,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:56:20,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:56:20,768 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 01:56:20,783 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 01:56:20,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:56:20,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:56:20,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:56:20,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:56:20,865 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:56:20,866 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:56:21,000 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:56:21,004 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:56:21,004 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 01:56:21,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:56:21 BoogieIcfgContainer [2022-01-11 01:56:21,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:56:21,006 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:56:21,006 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:56:21,007 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:56:21,009 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:56:21" (1/1) ... [2022-01-11 01:56:21,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:56:21 BasicIcfg [2022-01-11 01:56:21,048 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:56:21,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:56:21,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:56:21,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:56:21,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:56:20" (1/4) ... [2022-01-11 01:56:21,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b19a807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:56:21, skipping insertion in model container [2022-01-11 01:56:21,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:56:20" (2/4) ... [2022-01-11 01:56:21,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b19a807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:56:21, skipping insertion in model container [2022-01-11 01:56:21,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:56:21" (3/4) ... [2022-01-11 01:56:21,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b19a807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:56:21, skipping insertion in model container [2022-01-11 01:56:21,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:56:21" (4/4) ... [2022-01-11 01:56:21,055 INFO L111 eAbstractionObserver]: Analyzing ICFG sum02-2.cTransformedIcfg [2022-01-11 01:56:21,059 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:56:21,059 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 01:56:21,094 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:56:21,099 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 01:56:21,100 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 01:56:21,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 01:56:21,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-11 01:56:21,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:56:21,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:56:21,113 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:56:21,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:56:21,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1433014697, now seen corresponding path program 1 times [2022-01-11 01:56:21,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:56:21,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148609827] [2022-01-11 01:56:21,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:56:21,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:56:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:56:21,320 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 01:56:21,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:56:21,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148609827] [2022-01-11 01:56:21,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148609827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:56:21,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:56:21,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:56:21,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973240852] [2022-01-11 01:56:21,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:56:21,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 01:56:21,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:56:21,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 01:56:21,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 01:56:21,365 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 01:56:21,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:56:21,386 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2022-01-11 01:56:21,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 01:56:21,389 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-01-11 01:56:21,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:56:21,394 INFO L225 Difference]: With dead ends: 25 [2022-01-11 01:56:21,395 INFO L226 Difference]: Without dead ends: 10 [2022-01-11 01:56:21,398 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 01:56:21,402 INFO L933 BasicCegarLoop]: 14 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, 14 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 01:56:21,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:56:21,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-01-11 01:56:21,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-01-11 01:56:21,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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 01:56:21,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-01-11 01:56:21,439 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2022-01-11 01:56:21,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:56:21,439 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-01-11 01:56:21,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 01:56:21,439 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-01-11 01:56:21,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-11 01:56:21,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:56:21,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:56:21,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:56:21,440 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:56:21,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:56:21,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1461673639, now seen corresponding path program 1 times [2022-01-11 01:56:21,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:56:21,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962516474] [2022-01-11 01:56:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:56:21,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:56:21,490 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 01:56:21,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542252245] [2022-01-11 01:56:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:56:21,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:56:21,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:56:21,499 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 01:56:21,501 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 01:56:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:56:21,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-11 01:56:21,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 01:56:21,632 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 01:56:21,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 01:56:21,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:56:21,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962516474] [2022-01-11 01:56:21,634 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 01:56:21,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542252245] [2022-01-11 01:56:21,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542252245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:56:21,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:56:21,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 01:56:21,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585841667] [2022-01-11 01:56:21,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:56:21,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 01:56:21,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:56:21,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 01:56:21,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 01:56:21,640 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 01:56:21,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:56:21,692 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-01-11 01:56:21,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 01:56:21,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2022-01-11 01:56:21,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:56:21,694 INFO L225 Difference]: With dead ends: 16 [2022-01-11 01:56:21,694 INFO L226 Difference]: Without dead ends: 12 [2022-01-11 01:56:21,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 01:56:21,696 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:56:21,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 11 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:56:21,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-01-11 01:56:21,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2022-01-11 01:56:21,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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 01:56:21,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-01-11 01:56:21,704 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2022-01-11 01:56:21,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:56:21,704 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-01-11 01:56:21,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 01:56:21,705 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-01-11 01:56:21,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 01:56:21,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:56:21,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:56:21,734 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 01:56:21,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:56:21,924 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:56:21,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:56:21,924 INFO L85 PathProgramCache]: Analyzing trace with hash 243492489, now seen corresponding path program 1 times [2022-01-11 01:56:21,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:56:21,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270215489] [2022-01-11 01:56:21,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:56:21,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:56:21,946 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 01:56:21,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438462679] [2022-01-11 01:56:21,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:56:21,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:56:21,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:56:21,948 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 01:56:21,953 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 01:56:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:56:22,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-11 01:56:22,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 01:56:22,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:56:22,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 01:56:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:56:22,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:56:22,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270215489] [2022-01-11 01:56:22,144 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 01:56:22,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438462679] [2022-01-11 01:56:22,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438462679] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 01:56:22,145 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 01:56:22,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 7 [2022-01-11 01:56:22,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748882031] [2022-01-11 01:56:22,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 01:56:22,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 01:56:22,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:56:22,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 01:56:22,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:56:22,147 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 01:56:22,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:56:22,179 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-01-11 01:56:22,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 01:56:22,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 10 [2022-01-11 01:56:22,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:56:22,180 INFO L225 Difference]: With dead ends: 17 [2022-01-11 01:56:22,180 INFO L226 Difference]: Without dead ends: 13 [2022-01-11 01:56:22,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-11 01:56:22,181 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:56:22,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 31 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:56:22,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-01-11 01:56:22,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-01-11 01:56:22,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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 01:56:22,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-01-11 01:56:22,185 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2022-01-11 01:56:22,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:56:22,185 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-01-11 01:56:22,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 01:56:22,185 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-01-11 01:56:22,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-11 01:56:22,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:56:22,186 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:56:22,205 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 01:56:22,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-11 01:56:22,396 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:56:22,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:56:22,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2097479147, now seen corresponding path program 2 times [2022-01-11 01:56:22,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:56:22,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646156118] [2022-01-11 01:56:22,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:56:22,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:56:22,416 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 01:56:22,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961933522] [2022-01-11 01:56:22,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 01:56:22,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:56:22,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:56:22,432 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 01:56:22,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process