/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-acceleration/functions_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 09:26:02,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 09:26:02,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 09:26:02,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 09:26:02,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 09:26:02,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 09:26:02,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 09:26:02,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 09:26:02,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 09:26:02,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 09:26:02,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 09:26:02,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 09:26:02,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 09:26:02,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 09:26:02,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 09:26:02,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 09:26:02,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 09:26:02,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 09:26:02,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 09:26:02,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 09:26:02,968 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 09:26:02,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 09:26:02,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 09:26:02,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 09:26:02,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 09:26:02,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-06 09:26:02,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-06 09:26:02,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-06 09:26:02,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-06 09:26:02,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-06 09:26:02,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-06 09:26:02,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-06 09:26:02,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-06 09:26:02,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-06 09:26:02,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-06 09:26:02,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-06 09:26:02,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-06 09:26:02,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-06 09:26:02,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-06 09:26:02,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 09:26:02,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 09:26:02,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 09:26:02,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-06 09:26:03,004 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 09:26:03,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 09:26:03,005 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-06 09:26:03,005 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-06 09:26:03,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-06 09:26:03,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-06 09:26:03,006 INFO L138 SettingsManager]: * Use SBE=true [2022-04-06 09:26:03,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 09:26:03,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 09:26:03,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 09:26:03,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 09:26:03,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 09:26:03,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 09:26:03,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 09:26:03,007 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 09:26:03,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 09:26:03,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 09:26:03,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 09:26:03,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 09:26:03,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 09:26:03,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 09:26:03,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-06 09:26:03,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-06 09:26:03,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 09:26:03,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-06 09:26:03,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 09:26:03,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-06 09:26:03,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-06 09:26:03,009 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 09:26:03,009 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 09:26:03,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 09:26:03,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 09:26:03,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 09:26:03,230 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 09:26:03,230 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 09:26:03,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/functions_1-2.c [2022-04-06 09:26:03,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4de77af08/64f179dd1994419d8747b0bb1911d339/FLAG6a51c209c [2022-04-06 09:26:03,629 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 09:26:03,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-2.c [2022-04-06 09:26:03,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4de77af08/64f179dd1994419d8747b0bb1911d339/FLAG6a51c209c [2022-04-06 09:26:03,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4de77af08/64f179dd1994419d8747b0bb1911d339 [2022-04-06 09:26:03,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 09:26:03,652 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 09:26:03,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 09:26:03,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 09:26:03,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 09:26:03,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 09:26:03" (1/1) ... [2022-04-06 09:26:03,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31c100c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:26:03, skipping insertion in model container [2022-04-06 09:26:03,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 09:26:03" (1/1) ... [2022-04-06 09:26:03,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 09:26:03,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 09:26:03,774 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-2.c[325,338] [2022-04-06 09:26:03,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 09:26:03,786 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 09:26:03,798 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-2.c[325,338] [2022-04-06 09:26:03,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 09:26:03,814 INFO L208 MainTranslator]: Completed translation [2022-04-06 09:26:03,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:26:03 WrapperNode [2022-04-06 09:26:03,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 09:26:03,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 09:26:03,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 09:26:03,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 09:26:03,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:26:03" (1/1) ... [2022-04-06 09:26:03,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:26:03" (1/1) ... [2022-04-06 09:26:03,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:26:03" (1/1) ... [2022-04-06 09:26:03,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:26:03" (1/1) ... [2022-04-06 09:26:03,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:26:03" (1/1) ... [2022-04-06 09:26:03,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:26:03" (1/1) ... [2022-04-06 09:26:03,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:26:03" (1/1) ... [2022-04-06 09:26:03,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 09:26:03,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 09:26:03,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 09:26:03,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 09:26:03,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:26:03" (1/1) ... [2022-04-06 09:26:03,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 09:26:03,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 09:26:03,879 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) [2022-04-06 09:26:03,896 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 [2022-04-06 09:26:03,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 09:26:03,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 09:26:03,908 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 09:26:03,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 09:26:03,909 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-04-06 09:26:03,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 09:26:03,909 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 09:26:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 09:26:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 09:26:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 09:26:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 09:26:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-04-06 09:26:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 09:26:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 09:26:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 09:26:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 09:26:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 09:26:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 09:26:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 09:26:03,960 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 09:26:03,961 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 09:26:04,075 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 09:26:04,079 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 09:26:04,080 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 09:26:04,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 09:26:04 BoogieIcfgContainer [2022-04-06 09:26:04,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 09:26:04,082 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 09:26:04,082 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 09:26:04,083 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 09:26:04,101 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 09:26:04" (1/1) ... [2022-04-06 09:26:04,103 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-06 09:26:04,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 09:26:04 BasicIcfg [2022-04-06 09:26:04,112 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 09:26:04,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 09:26:04,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 09:26:04,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 09:26:04,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 09:26:03" (1/4) ... [2022-04-06 09:26:04,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f51b07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 09:26:04, skipping insertion in model container [2022-04-06 09:26:04,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:26:03" (2/4) ... [2022-04-06 09:26:04,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f51b07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 09:26:04, skipping insertion in model container [2022-04-06 09:26:04,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 09:26:04" (3/4) ... [2022-04-06 09:26:04,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f51b07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 09:26:04, skipping insertion in model container [2022-04-06 09:26:04,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 09:26:04" (4/4) ... [2022-04-06 09:26:04,118 INFO L111 eAbstractionObserver]: Analyzing ICFG functions_1-2.cqvasr [2022-04-06 09:26:04,121 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-06 09:26:04,121 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 09:26:04,183 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 09:26:04,189 INFO L340 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=FINITE_AUTOMATA, 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 [2022-04-06 09:26:04,190 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 09:26:04,212 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-06 09:26:04,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-06 09:26:04,215 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 09:26:04,216 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 09:26:04,216 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 09:26:04,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 09:26:04,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1565505021, now seen corresponding path program 1 times [2022-04-06 09:26:04,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 09:26:04,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040366157] [2022-04-06 09:26:04,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 09:26:04,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 09:26:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:04,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 09:26:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:04,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 09:26:04,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 09:26:04,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040366157] [2022-04-06 09:26:04,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040366157] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 09:26:04,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 09:26:04,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 09:26:04,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359872203] [2022-04-06 09:26:04,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 09:26:04,378 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 09:26:04,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 09:26:04,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 09:26:04,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 09:26:04,400 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 09:26:04,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 09:26:04,432 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-04-06 09:26:04,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 09:26:04,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-06 09:26:04,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 09:26:04,441 INFO L225 Difference]: With dead ends: 34 [2022-04-06 09:26:04,442 INFO L226 Difference]: Without dead ends: 17 [2022-04-06 09:26:04,443 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 09:26:04,446 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 09:26:04,446 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 09:26:04,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-04-06 09:26:04,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-04-06 09:26:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-06 09:26:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-04-06 09:26:04,468 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2022-04-06 09:26:04,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 09:26:04,469 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-04-06 09:26:04,469 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 09:26:04,469 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-04-06 09:26:04,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-06 09:26:04,469 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 09:26:04,470 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 09:26:04,470 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 09:26:04,470 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 09:26:04,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 09:26:04,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1564581500, now seen corresponding path program 1 times [2022-04-06 09:26:04,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 09:26:04,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883922565] [2022-04-06 09:26:04,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 09:26:04,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 09:26:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:04,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 09:26:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:04,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 09:26:04,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 09:26:04,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883922565] [2022-04-06 09:26:04,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883922565] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 09:26:04,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 09:26:04,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 09:26:04,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997112583] [2022-04-06 09:26:04,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 09:26:04,530 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 09:26:04,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 09:26:04,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 09:26:04,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 09:26:04,531 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 09:26:04,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 09:26:04,559 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-04-06 09:26:04,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 09:26:04,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-06 09:26:04,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 09:26:04,561 INFO L225 Difference]: With dead ends: 25 [2022-04-06 09:26:04,561 INFO L226 Difference]: Without dead ends: 20 [2022-04-06 09:26:04,561 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 09:26:04,562 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 09:26:04,563 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 22 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 09:26:04,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-04-06 09:26:04,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-04-06 09:26:04,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-06 09:26:04,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-04-06 09:26:04,569 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2022-04-06 09:26:04,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 09:26:04,569 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-04-06 09:26:04,569 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 09:26:04,569 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-04-06 09:26:04,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-06 09:26:04,570 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 09:26:04,570 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 09:26:04,570 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 09:26:04,570 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 09:26:04,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 09:26:04,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1890585047, now seen corresponding path program 1 times [2022-04-06 09:26:04,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 09:26:04,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539373331] [2022-04-06 09:26:04,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 09:26:04,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 09:26:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:04,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 09:26:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:04,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 09:26:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:04,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 09:26:04,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 09:26:04,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539373331] [2022-04-06 09:26:04,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539373331] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 09:26:04,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387598806] [2022-04-06 09:26:04,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 09:26:04,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 09:26:04,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 09:26:04,668 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) [2022-04-06 09:26:04,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 09:26:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:04,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 09:26:04,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 09:26:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 09:26:04,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 09:26:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 09:26:04,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387598806] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 09:26:04,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 09:26:04,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2022-04-06 09:26:04,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186689507] [2022-04-06 09:26:04,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 09:26:04,979 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 09:26:04,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 09:26:04,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 09:26:04,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-04-06 09:26:04,980 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-06 09:26:05,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 09:26:05,195 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-04-06 09:26:05,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 09:26:05,196 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 17 [2022-04-06 09:26:05,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 09:26:05,197 INFO L225 Difference]: With dead ends: 29 [2022-04-06 09:26:05,197 INFO L226 Difference]: Without dead ends: 24 [2022-04-06 09:26:05,198 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-04-06 09:26:05,201 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 09:26:05,203 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 52 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 09:26:05,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-04-06 09:26:05,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-04-06 09:26:05,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-06 09:26:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-04-06 09:26:05,214 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2022-04-06 09:26:05,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 09:26:05,214 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-04-06 09:26:05,215 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-06 09:26:05,215 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-04-06 09:26:05,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-06 09:26:05,217 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 09:26:05,217 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 09:26:05,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 09:26:05,433 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 09:26:05,434 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 09:26:05,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 09:26:05,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1393393715, now seen corresponding path program 2 times [2022-04-06 09:26:05,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 09:26:05,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869932602] [2022-04-06 09:26:05,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 09:26:05,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 09:26:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:05,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 09:26:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:05,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 09:26:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:05,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 09:26:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:05,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 09:26:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-04-06 09:26:05,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 09:26:05,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869932602] [2022-04-06 09:26:05,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869932602] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 09:26:05,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281948042] [2022-04-06 09:26:05,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 09:26:05,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 09:26:05,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 09:26:05,663 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) [2022-04-06 09:26:05,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 09:26:05,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 09:26:05,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 09:26:05,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 33 conjunts are in the unsatisfiable core [2022-04-06 09:26:05,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 09:26:05,888 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-04-06 09:26:05,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 09:26:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-06 09:26:06,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281948042] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 09:26:06,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 09:26:06,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 12] total 22 [2022-04-06 09:26:06,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859855360] [2022-04-06 09:26:06,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 09:26:06,193 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-04-06 09:26:06,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 09:26:06,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-04-06 09:26:06,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-04-06 09:26:06,194 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 15 states have internal predecessors, (32), 8 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-06 09:26:06,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 09:26:06,689 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2022-04-06 09:26:06,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-06 09:26:06,689 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 15 states have internal predecessors, (32), 8 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 29 [2022-04-06 09:26:06,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 09:26:06,690 INFO L225 Difference]: With dead ends: 41 [2022-04-06 09:26:06,690 INFO L226 Difference]: Without dead ends: 36 [2022-04-06 09:26:06,690 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2022-04-06 09:26:06,691 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 23 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 09:26:06,691 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 94 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 09:26:06,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-06 09:26:06,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-04-06 09:26:06,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 10 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-06 09:26:06,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-04-06 09:26:06,696 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 29 [2022-04-06 09:26:06,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 09:26:06,696 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-04-06 09:26:06,697 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 15 states have internal predecessors, (32), 8 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-06 09:26:06,697 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-04-06 09:26:06,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-06 09:26:06,698 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 09:26:06,698 INFO L499 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 09:26:06,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 09:26:06,898 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-04-06 09:26:06,899 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 09:26:06,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 09:26:06,899 INFO L85 PathProgramCache]: Analyzing trace with hash 638375751, now seen corresponding path program 3 times [2022-04-06 09:26:06,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 09:26:06,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278916360] [2022-04-06 09:26:06,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 09:26:06,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 09:26:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:07,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 09:26:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:07,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 09:26:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:07,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 09:26:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:07,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 09:26:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:07,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 09:26:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:07,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 09:26:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:07,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-06 09:26:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:07,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-06 09:26:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:07,236 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-04-06 09:26:07,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 09:26:07,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278916360] [2022-04-06 09:26:07,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278916360] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 09:26:07,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019824717] [2022-04-06 09:26:07,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 09:26:07,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 09:26:07,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 09:26:07,240 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) [2022-04-06 09:26:07,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 09:26:07,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-04-06 09:26:07,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 09:26:07,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 73 conjunts are in the unsatisfiable core [2022-04-06 09:26:07,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 09:26:07,585 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-04-06 09:26:07,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 09:26:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-04-06 09:26:08,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019824717] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 09:26:08,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 09:26:08,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 24] total 42 [2022-04-06 09:26:08,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570138247] [2022-04-06 09:26:08,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 09:26:08,344 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-04-06 09:26:08,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 09:26:08,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-04-06 09:26:08,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1505, Unknown=0, NotChecked=0, Total=1722 [2022-04-06 09:26:08,345 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 27 states have internal predecessors, (56), 16 states have call successors, (18), 3 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-06 09:26:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 09:26:12,990 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2022-04-06 09:26:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-04-06 09:26:12,991 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 27 states have internal predecessors, (56), 16 states have call successors, (18), 3 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 53 [2022-04-06 09:26:12,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 09:26:12,992 INFO L225 Difference]: With dead ends: 65 [2022-04-06 09:26:12,992 INFO L226 Difference]: Without dead ends: 60 [2022-04-06 09:26:12,994 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 92 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=845, Invalid=4267, Unknown=0, NotChecked=0, Total=5112 [2022-04-06 09:26:12,994 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 40 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 09:26:12,995 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 143 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 09:26:12,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-04-06 09:26:13,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-04-06 09:26:13,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 18 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-06 09:26:13,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2022-04-06 09:26:13,003 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 53 [2022-04-06 09:26:13,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 09:26:13,004 INFO L478 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2022-04-06 09:26:13,004 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 27 states have internal predecessors, (56), 16 states have call successors, (18), 3 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-06 09:26:13,004 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2022-04-06 09:26:13,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-04-06 09:26:13,019 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 09:26:13,019 INFO L499 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 09:26:13,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-04-06 09:26:13,235 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 09:26:13,236 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 09:26:13,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 09:26:13,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1561497967, now seen corresponding path program 4 times [2022-04-06 09:26:13,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 09:26:13,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426864372] [2022-04-06 09:26:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 09:26:13,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 09:26:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:13,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 09:26:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:13,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 09:26:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:13,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 09:26:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:13,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 09:26:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:13,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 09:26:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:13,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 09:26:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:13,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-06 09:26:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:13,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-06 09:26:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:13,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-06 09:26:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:13,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-06 09:26:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:13,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-06 09:26:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:13,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-06 09:26:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:13,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-06 09:26:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:13,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-06 09:26:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:13,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-06 09:26:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:13,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-06 09:26:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:26:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-04-06 09:26:13,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 09:26:13,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426864372] [2022-04-06 09:26:13,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426864372] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 09:26:13,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458278986] [2022-04-06 09:26:13,980 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 09:26:13,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 09:26:13,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 09:26:13,981 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 09:26:13,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 09:26:14,032 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 09:26:14,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 09:26:14,035 WARN L261 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 153 conjunts are in the unsatisfiable core [2022-04-06 09:26:14,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 09:26:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-04-06 09:26:14,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 09:26:17,254 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-04-06 09:26:17,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458278986] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 09:26:17,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 09:26:17,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 48] total 82 [2022-04-06 09:26:17,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764791780] [2022-04-06 09:26:17,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 09:26:17,255 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-04-06 09:26:17,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 09:26:17,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-04-06 09:26:17,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=689, Invalid=5953, Unknown=0, NotChecked=0, Total=6642 [2022-04-06 09:26:17,258 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 82 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 51 states have internal predecessors, (104), 32 states have call successors, (34), 3 states have call predecessors, (34), 17 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-04-06 09:28:51,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 09:28:51,734 INFO L93 Difference]: Finished difference Result 113 states and 158 transitions. [2022-04-06 09:28:51,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-04-06 09:28:51,735 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 51 states have internal predecessors, (104), 32 states have call successors, (34), 3 states have call predecessors, (34), 17 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 101 [2022-04-06 09:28:51,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 09:28:51,736 INFO L225 Difference]: With dead ends: 113 [2022-04-06 09:28:51,736 INFO L226 Difference]: Without dead ends: 108 [2022-04-06 09:28:51,740 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 172 SyntacticMatches, 15 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3053 ImplicationChecksByTransitivity, 154.7s TimeCoverageRelationStatistics Valid=3098, Invalid=17490, Unknown=4, NotChecked=0, Total=20592 [2022-04-06 09:28:51,741 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 87 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 3829 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 4217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 3829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-04-06 09:28:51,741 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 261 Invalid, 4217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 3829 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-04-06 09:28:51,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-04-06 09:28:51,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-04-06 09:28:51,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 34 states have call successors, (34), 4 states have call predecessors, (34), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-06 09:28:51,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 138 transitions. [2022-04-06 09:28:51,753 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 138 transitions. Word has length 101 [2022-04-06 09:28:51,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 09:28:51,754 INFO L478 AbstractCegarLoop]: Abstraction has 108 states and 138 transitions. [2022-04-06 09:28:51,754 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 51 states have internal predecessors, (104), 32 states have call successors, (34), 3 states have call predecessors, (34), 17 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-04-06 09:28:51,754 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 138 transitions. [2022-04-06 09:28:51,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-04-06 09:28:51,756 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 09:28:51,756 INFO L499 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 09:28:51,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 09:28:51,971 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 09:28:51,971 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 09:28:51,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 09:28:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1223308735, now seen corresponding path program 5 times [2022-04-06 09:28:51,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 09:28:51,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016690180] [2022-04-06 09:28:51,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 09:28:51,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 09:28:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 09:28:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 09:28:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 09:28:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 09:28:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 09:28:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 09:28:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-06 09:28:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-06 09:28:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-06 09:28:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-06 09:28:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-06 09:28:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-06 09:28:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-06 09:28:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-06 09:28:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-06 09:28:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-06 09:28:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-06 09:28:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-06 09:28:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-06 09:28:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-06 09:28:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-06 09:28:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-06 09:28:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-06 09:28:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-06 09:28:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-06 09:28:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-06 09:28:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-06 09:28:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-06 09:28:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-06 09:28:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-06 09:28:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-06 09:28:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-06 09:28:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:28:53,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-04-06 09:28:53,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 09:28:53,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016690180] [2022-04-06 09:28:53,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016690180] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 09:28:53,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018261130] [2022-04-06 09:28:53,948 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-06 09:28:53,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 09:28:53,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 09:28:53,953 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 09:28:53,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 09:29:10,561 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2022-04-06 09:29:10,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 09:29:10,573 WARN L261 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 313 conjunts are in the unsatisfiable core [2022-04-06 09:29:10,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 09:29:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-04-06 09:29:12,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 09:29:21,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-04-06 09:29:21,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018261130] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 09:29:21,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 09:29:21,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 96] total 162 [2022-04-06 09:29:21,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121268979] [2022-04-06 09:29:21,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 09:29:21,756 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2022-04-06 09:29:21,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 09:29:21,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2022-04-06 09:29:21,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2401, Invalid=23681, Unknown=0, NotChecked=0, Total=26082 [2022-04-06 09:29:21,762 INFO L87 Difference]: Start difference. First operand 108 states and 138 transitions. Second operand has 162 states, 162 states have (on average 1.2345679012345678) internal successors, (200), 99 states have internal predecessors, (200), 64 states have call successors, (66), 3 states have call predecessors, (66), 33 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-04-06 09:30:38,235 WARN L232 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 136 DAG size of output: 20 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-06 09:32:02,690 WARN L232 SmtUtils]: Spent 7.97s on a formula simplification. DAG size of input: 132 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-06 09:32:04,813 WARN L833 $PredicateComparison]: unable to prove that (and (< (mod (+ 16 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ c_main_~x~0 24) 4294967296) 268435455) (< (mod (+ 20 c_main_~x~0) 4294967296) 268435455) (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ 6 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 54) 4294967296) 268435455) (< (mod (+ 52 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 50) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 10) 4294967296) 268435455) (< (mod (+ 14 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 52 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 48 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 42 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 38 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 56 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 12) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 38) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 28) 4294967296) 268435455) (< (mod (+ 4 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 20) 4294967296) 268435455) (< (mod (+ 34 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 24) 4294967296) 268435455) (< (mod (+ 34 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 26) 4294967296) 268435455) (< (mod (+ 58 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 46 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod c_main_~x~0 4294967296) 268435455) (< (mod (+ 30 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 18 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 28 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 32 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 18) 4294967296) 268435455) (< (mod (+ 56 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 42 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 14 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 36) 4294967296) 268435455) (< (mod (+ 32 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 44 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 16 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 4) 4294967296) 268435455) (< (mod (+ 60 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 48) 4294967296) 268435455) (< (mod (+ 8 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 30 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 26 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 50) 4294967296) 268435455) (< (mod (+ 46 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 10 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 58) 4294967296) 268435455) (< (mod (+ 6 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 12 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 54) 4294967296) 268435455) (< (mod |c_main_#t~ret4| 4294967296) 268435455) (< (mod (+ 44 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 36 c_main_~x~0) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ 22 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 8) 4294967296) 268435455) (< (mod (+ 22 c_main_~x~0) 4294967296) 268435455)) is different from false [2022-04-06 09:33:52,473 WARN L232 SmtUtils]: Spent 9.13s on a formula simplification. DAG size of input: 122 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-06 09:35:25,042 WARN L232 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 128 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-06 09:35:27,165 WARN L833 $PredicateComparison]: unable to prove that (and (< (mod (+ 16 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ c_main_~x~0 24) 4294967296) 268435455) (< (mod (+ 20 c_main_~x~0) 4294967296) 268435455) (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ 6 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 54) 4294967296) 268435455) (< (mod (+ 52 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 50) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 10) 4294967296) 268435455) (< (mod (+ 14 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 52 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 48 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 42 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 38 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 56 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 12) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 38) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 28) 4294967296) 268435455) (< (mod (+ 4 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 20) 4294967296) 268435455) (< (mod (+ 34 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 24) 4294967296) 268435455) (< (mod (+ 34 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 26) 4294967296) 268435455) (< (mod (+ 58 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 46 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod c_main_~x~0 4294967296) 268435455) (< (mod (+ 30 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 18 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 28 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 32 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 18) 4294967296) 268435455) (< (mod (+ 56 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 42 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 14 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 36) 4294967296) 268435455) (< (mod (+ 32 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 44 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 16 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 4) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 48) 4294967296) 268435455) (< (mod (+ 8 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 30 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 26 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 50) 4294967296) 268435455) (< (mod (+ 46 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 10 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 6 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 12 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 54) 4294967296) 268435455) (< (mod |c_main_#t~ret4| 4294967296) 268435455) (< (mod (+ 44 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 36 c_main_~x~0) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ 22 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 8) 4294967296) 268435455) (< (mod (+ 22 c_main_~x~0) 4294967296) 268435455)) is different from false [2022-04-06 09:36:43,583 WARN L232 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 118 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-06 09:38:00,964 WARN L232 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 124 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-06 09:38:03,087 WARN L833 $PredicateComparison]: unable to prove that (and (< (mod (+ 16 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ c_main_~x~0 24) 4294967296) 268435455) (< (mod (+ 20 c_main_~x~0) 4294967296) 268435455) (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ 6 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 54) 4294967296) 268435455) (< (mod (+ 52 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 50) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 10) 4294967296) 268435455) (< (mod (+ 14 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 52 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 48 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 42 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 38 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 56 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 12) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 38) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 28) 4294967296) 268435455) (< (mod (+ 4 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 20) 4294967296) 268435455) (< (mod (+ 34 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 24) 4294967296) 268435455) (< (mod (+ 34 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 26) 4294967296) 268435455) (< (mod (+ 46 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod c_main_~x~0 4294967296) 268435455) (< (mod (+ 30 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 18 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 28 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 32 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 18) 4294967296) 268435455) (< (mod (+ 42 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 14 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 36) 4294967296) 268435455) (< (mod (+ 32 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 44 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 16 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 4) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 48) 4294967296) 268435455) (< (mod (+ 8 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 30 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 26 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 50) 4294967296) 268435455) (< (mod (+ 46 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 10 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 6 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 12 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 54) 4294967296) 268435455) (< (mod |c_main_#t~ret4| 4294967296) 268435455) (< (mod (+ 44 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 36 c_main_~x~0) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ 22 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 8) 4294967296) 268435455) (< (mod (+ 22 c_main_~x~0) 4294967296) 268435455)) is different from false [2022-04-06 09:40:36,897 WARN L232 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 120 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-06 09:40:39,090 WARN L833 $PredicateComparison]: unable to prove that (and (< (mod (+ 16 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ c_main_~x~0 24) 4294967296) 268435455) (< (mod (+ 20 c_main_~x~0) 4294967296) 268435455) (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ 6 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 54) 4294967296) 268435455) (< (mod (+ 52 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 50) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 10) 4294967296) 268435455) (< (mod (+ 14 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 52 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 48 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 42 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 38 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 12) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 38) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 28) 4294967296) 268435455) (< (mod (+ 4 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 20) 4294967296) 268435455) (< (mod (+ 34 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 24) 4294967296) 268435455) (< (mod (+ 34 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 26) 4294967296) 268435455) (< (mod (+ 46 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod c_main_~x~0 4294967296) 268435455) (< (mod (+ 30 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 18 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 28 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 32 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 18) 4294967296) 268435455) (< (mod (+ 42 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 14 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 36) 4294967296) 268435455) (< (mod (+ 32 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 44 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 16 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 4) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 48) 4294967296) 268435455) (< (mod (+ 8 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 30 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 26 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 50) 4294967296) 268435455) (< (mod (+ 46 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 10 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 6 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 12 c_main_~x~0) 4294967296) 268435455) (< (mod |c_main_#t~ret4| 4294967296) 268435455) (< (mod (+ 44 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 36 c_main_~x~0) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ 22 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 8) 4294967296) 268435455) (< (mod (+ 22 c_main_~x~0) 4294967296) 268435455)) is different from false