/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-b030c9e [2022-03-20 08:17:49,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 08:17:49,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 08:17:49,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 08:17:49,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 08:17:49,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 08:17:49,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 08:17:49,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 08:17:49,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 08:17:49,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 08:17:49,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 08:17:49,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 08:17:49,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 08:17:49,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 08:17:49,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 08:17:49,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 08:17:49,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 08:17:49,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 08:17:49,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 08:17:49,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 08:17:49,974 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 08:17:49,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 08:17:49,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 08:17:49,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 08:17:49,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 08:17:49,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 08:17:49,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 08:17:49,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 08:17:49,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 08:17:49,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 08:17:49,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-20 08:17:49,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 08:17:49,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 08:17:49,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 08:17:49,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 08:17:49,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 08:17:49,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 08:17:49,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 08:17:49,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 08:17:49,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 08:17:49,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 08:17:49,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 08:17:49,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-20 08:17:50,007 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 08:17:50,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 08:17:50,008 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 08:17:50,008 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 08:17:50,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 08:17:50,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 08:17:50,009 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 08:17:50,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 08:17:50,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 08:17:50,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 08:17:50,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 08:17:50,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 08:17:50,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 08:17:50,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 08:17:50,009 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 08:17:50,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 08:17:50,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 08:17:50,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 08:17:50,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 08:17:50,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:17:50,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 08:17:50,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 08:17:50,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 08:17:50,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 08:17:50,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 08:17:50,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 08:17:50,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 08:17:50,011 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 08:17:50,011 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 08:17:50,011 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 08:17:50,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 08:17:50,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 08:17:50,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 08:17:50,232 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 08:17:50,233 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 08:17:50,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/functions_1-2.c [2022-03-20 08:17:50,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84b761c27/0ea6249fd3cd4098a26ea349fdfaa3c4/FLAG5cff46795 [2022-03-20 08:17:50,637 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 08:17:50,637 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-2.c [2022-03-20 08:17:50,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84b761c27/0ea6249fd3cd4098a26ea349fdfaa3c4/FLAG5cff46795 [2022-03-20 08:17:50,653 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84b761c27/0ea6249fd3cd4098a26ea349fdfaa3c4 [2022-03-20 08:17:50,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 08:17:50,655 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 08:17:50,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 08:17:50,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 08:17:50,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 08:17:50,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:17:50" (1/1) ... [2022-03-20 08:17:50,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c0ec98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:17:50, skipping insertion in model container [2022-03-20 08:17:50,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:17:50" (1/1) ... [2022-03-20 08:17:50,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 08:17:50,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 08:17:50,783 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] [2022-03-20 08:17:50,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:17:50,796 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 08:17:50,810 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] [2022-03-20 08:17:50,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:17:50,822 INFO L208 MainTranslator]: Completed translation [2022-03-20 08:17:50,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:17:50 WrapperNode [2022-03-20 08:17:50,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 08:17:50,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 08:17:50,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 08:17:50,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 08:17:50,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:17:50" (1/1) ... [2022-03-20 08:17:50,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:17:50" (1/1) ... [2022-03-20 08:17:50,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:17:50" (1/1) ... [2022-03-20 08:17:50,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:17:50" (1/1) ... [2022-03-20 08:17:50,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:17:50" (1/1) ... [2022-03-20 08:17:50,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:17:50" (1/1) ... [2022-03-20 08:17:50,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:17:50" (1/1) ... [2022-03-20 08:17:50,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 08:17:50,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 08:17:50,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 08:17:50,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 08:17:50,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:17:50" (1/1) ... [2022-03-20 08:17:50,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:17:50,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:17:50,864 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) [2022-03-20 08:17:50,878 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 [2022-03-20 08:17:50,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 08:17:50,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 08:17:50,902 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 08:17:50,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 08:17:50,903 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-03-20 08:17:50,903 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 08:17:50,903 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 08:17:50,903 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 08:17:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 08:17:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 08:17:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 08:17:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-03-20 08:17:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 08:17:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 08:17:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 08:17:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 08:17:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 08:17:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 08:17:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 08:17:50,956 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 08:17:50,957 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 08:17:51,032 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 08:17:51,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 08:17:51,036 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 08:17:51,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:17:51 BoogieIcfgContainer [2022-03-20 08:17:51,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 08:17:51,038 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 08:17:51,038 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 08:17:51,039 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 08:17:51,041 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:17:51" (1/1) ... [2022-03-20 08:17:51,042 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 08:17:51,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:17:51 BasicIcfg [2022-03-20 08:17:51,050 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 08:17:51,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 08:17:51,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 08:17:51,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 08:17:51,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 08:17:50" (1/4) ... [2022-03-20 08:17:51,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3443ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:17:51, skipping insertion in model container [2022-03-20 08:17:51,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:17:50" (2/4) ... [2022-03-20 08:17:51,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3443ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:17:51, skipping insertion in model container [2022-03-20 08:17:51,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:17:51" (3/4) ... [2022-03-20 08:17:51,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3443ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:17:51, skipping insertion in model container [2022-03-20 08:17:51,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:17:51" (4/4) ... [2022-03-20 08:17:51,055 INFO L111 eAbstractionObserver]: Analyzing ICFG functions_1-2.cqvasr [2022-03-20 08:17:51,058 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 08:17:51,058 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 08:17:51,089 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 08:17:51,101 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 [2022-03-20 08:17:51,102 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 08:17:51,133 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) [2022-03-20 08:17:51,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 08:17:51,137 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:17:51,137 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:17:51,138 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:17:51,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:17:51,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1565505021, now seen corresponding path program 1 times [2022-03-20 08:17:51,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:17:51,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466622984] [2022-03-20 08:17:51,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:17:51,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:17:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:51,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:17:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:17:51,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:17:51,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466622984] [2022-03-20 08:17:51,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466622984] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:17:51,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:17:51,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 08:17:51,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510122337] [2022-03-20 08:17:51,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:17:51,311 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 08:17:51,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:17:51,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 08:17:51,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 08:17:51,343 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) [2022-03-20 08:17:51,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:17:51,414 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-03-20 08:17:51,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 08:17:51,422 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 [2022-03-20 08:17:51,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:17:51,426 INFO L225 Difference]: With dead ends: 34 [2022-03-20 08:17:51,426 INFO L226 Difference]: Without dead ends: 17 [2022-03-20 08:17:51,428 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 [2022-03-20 08:17:51,431 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 08:17:51,431 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 08:17:51,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-03-20 08:17:51,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-03-20 08:17:51,472 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) [2022-03-20 08:17:51,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-03-20 08:17:51,473 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2022-03-20 08:17:51,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:17:51,474 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-03-20 08:17:51,474 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) [2022-03-20 08:17:51,474 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-03-20 08:17:51,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 08:17:51,474 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:17:51,475 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:17:51,475 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 08:17:51,475 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:17:51,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:17:51,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1564581500, now seen corresponding path program 1 times [2022-03-20 08:17:51,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:17:51,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876635145] [2022-03-20 08:17:51,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:17:51,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:17:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:51,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:17:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:51,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:17:51,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:17:51,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876635145] [2022-03-20 08:17:51,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876635145] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:17:51,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:17:51,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 08:17:51,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021317284] [2022-03-20 08:17:51,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:17:51,583 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 08:17:51,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:17:51,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 08:17:51,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 08:17:51,584 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) [2022-03-20 08:17:51,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:17:51,611 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-03-20 08:17:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 08:17:51,611 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 [2022-03-20 08:17:51,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:17:51,612 INFO L225 Difference]: With dead ends: 25 [2022-03-20 08:17:51,613 INFO L226 Difference]: Without dead ends: 20 [2022-03-20 08:17:51,613 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 [2022-03-20 08:17:51,614 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 [2022-03-20 08:17:51,614 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] [2022-03-20 08:17:51,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-03-20 08:17:51,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-03-20 08:17:51,620 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) [2022-03-20 08:17:51,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-03-20 08:17:51,620 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2022-03-20 08:17:51,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:17:51,621 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-03-20 08:17:51,621 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) [2022-03-20 08:17:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-03-20 08:17:51,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-20 08:17:51,621 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:17:51,621 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:17:51,622 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 08:17:51,622 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:17:51,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:17:51,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1890585047, now seen corresponding path program 1 times [2022-03-20 08:17:51,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:17:51,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925123944] [2022-03-20 08:17:51,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:17:51,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:17:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:51,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:17:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:51,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 08:17:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:17:51,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:17:51,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925123944] [2022-03-20 08:17:51,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925123944] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:17:51,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310531579] [2022-03-20 08:17:51,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:17:51,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:17:51,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:17:51,781 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) [2022-03-20 08:17:51,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 08:17:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:51,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-20 08:17:51,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:17:51,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:17:51,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:17:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:17:52,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310531579] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:17:52,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:17:52,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2022-03-20 08:17:52,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069876084] [2022-03-20 08:17:52,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:17:52,093 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 08:17:52,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:17:52,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 08:17:52,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-20 08:17:52,094 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) [2022-03-20 08:17:52,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:17:52,208 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-03-20 08:17:52,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 08:17:52,208 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 [2022-03-20 08:17:52,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:17:52,209 INFO L225 Difference]: With dead ends: 29 [2022-03-20 08:17:52,209 INFO L226 Difference]: Without dead ends: 24 [2022-03-20 08:17:52,209 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-03-20 08:17:52,210 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-03-20 08:17:52,210 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] [2022-03-20 08:17:52,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-03-20 08:17:52,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-03-20 08:17:52,214 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) [2022-03-20 08:17:52,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-03-20 08:17:52,214 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2022-03-20 08:17:52,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:17:52,215 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-03-20 08:17:52,215 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) [2022-03-20 08:17:52,215 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-03-20 08:17:52,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-20 08:17:52,216 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:17:52,216 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:17:52,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-20 08:17:52,433 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 [2022-03-20 08:17:52,434 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:17:52,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:17:52,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1393393715, now seen corresponding path program 2 times [2022-03-20 08:17:52,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:17:52,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761197394] [2022-03-20 08:17:52,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:17:52,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:17:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:52,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:17:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:52,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 08:17:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:52,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 08:17:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:52,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 08:17:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-20 08:17:52,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:17:52,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761197394] [2022-03-20 08:17:52,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761197394] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:17:52,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408295907] [2022-03-20 08:17:52,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 08:17:52,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:17:52,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:17:52,601 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) [2022-03-20 08:17:52,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 08:17:52,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 08:17:52,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:17:52,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-20 08:17:52,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:17:52,780 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-20 08:17:52,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:17:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 08:17:53,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408295907] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:17:53,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:17:53,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 12] total 22 [2022-03-20 08:17:53,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174226803] [2022-03-20 08:17:53,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:17:53,048 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-20 08:17:53,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:17:53,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-20 08:17:53,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-03-20 08:17:53,049 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) [2022-03-20 08:17:53,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:17:53,522 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2022-03-20 08:17:53,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 08:17:53,522 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 [2022-03-20 08:17:53,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:17:53,523 INFO L225 Difference]: With dead ends: 41 [2022-03-20 08:17:53,523 INFO L226 Difference]: Without dead ends: 36 [2022-03-20 08:17:53,524 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 [2022-03-20 08:17:53,525 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 23 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-03-20 08:17:53,525 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] [2022-03-20 08:17:53,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-03-20 08:17:53,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-03-20 08:17:53,530 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) [2022-03-20 08:17:53,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-03-20 08:17:53,530 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 29 [2022-03-20 08:17:53,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:17:53,531 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-03-20 08:17:53,531 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) [2022-03-20 08:17:53,531 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-03-20 08:17:53,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-20 08:17:53,532 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:17:53,532 INFO L499 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:17:53,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 08:17:53,741 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 [2022-03-20 08:17:53,742 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:17:53,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:17:53,742 INFO L85 PathProgramCache]: Analyzing trace with hash 638375751, now seen corresponding path program 3 times [2022-03-20 08:17:53,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:17:53,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899796456] [2022-03-20 08:17:53,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:17:53,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:17:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:54,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:17:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:54,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 08:17:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:54,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 08:17:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:54,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 08:17:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:54,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 08:17:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:54,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 08:17:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:54,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-20 08:17:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:54,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-20 08:17:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:17:54,099 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-03-20 08:17:54,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:17:54,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899796456] [2022-03-20 08:17:54,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899796456] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:17:54,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433652160] [2022-03-20 08:17:54,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 08:17:54,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:17:54,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:17:54,101 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) [2022-03-20 08:17:54,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 08:17:54,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-03-20 08:17:54,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:17:54,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 73 conjunts are in the unsatisfiable core [2022-03-20 08:17:54,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:17:54,406 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-03-20 08:17:54,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:17:55,198 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-20 08:17:55,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433652160] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:17:55,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:17:55,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 24] total 42 [2022-03-20 08:17:55,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110778628] [2022-03-20 08:17:55,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:17:55,199 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-20 08:17:55,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:17:55,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-20 08:17:55,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1505, Unknown=0, NotChecked=0, Total=1722 [2022-03-20 08:17:55,201 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) [2022-03-20 08:17:59,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:17:59,981 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2022-03-20 08:17:59,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-20 08:17:59,981 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 [2022-03-20 08:17:59,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:17:59,982 INFO L225 Difference]: With dead ends: 65 [2022-03-20 08:17:59,982 INFO L226 Difference]: Without dead ends: 60 [2022-03-20 08:17:59,984 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 92 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=845, Invalid=4267, Unknown=0, NotChecked=0, Total=5112 [2022-03-20 08:17:59,985 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 [2022-03-20 08:17:59,985 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] [2022-03-20 08:17:59,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-03-20 08:17:59,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-03-20 08:17:59,991 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) [2022-03-20 08:17:59,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2022-03-20 08:17:59,992 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 53 [2022-03-20 08:17:59,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:17:59,993 INFO L478 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2022-03-20 08:17:59,993 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) [2022-03-20 08:17:59,993 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2022-03-20 08:17:59,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-03-20 08:17:59,995 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:17:59,995 INFO L499 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:18:00,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-20 08:18:00,211 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 [2022-03-20 08:18:00,212 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:18:00,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:18:00,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1561497967, now seen corresponding path program 4 times [2022-03-20 08:18:00,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:18:00,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416943374] [2022-03-20 08:18:00,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:18:00,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:18:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:00,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:18:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:00,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 08:18:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:00,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 08:18:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:00,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 08:18:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:00,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 08:18:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:00,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 08:18:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:00,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-20 08:18:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:00,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-20 08:18:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:00,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 08:18:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:00,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-20 08:18:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:00,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-20 08:18:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:00,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-03-20 08:18:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:00,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 08:18:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:00,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-20 08:18:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:00,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-20 08:18:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:00,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-20 08:18:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:00,956 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-03-20 08:18:00,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:18:00,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416943374] [2022-03-20 08:18:00,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416943374] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:18:00,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127917383] [2022-03-20 08:18:00,961 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 08:18:00,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:18:00,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:18:00,964 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) [2022-03-20 08:18:00,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 08:18:01,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 08:18:01,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:18:01,019 WARN L261 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 153 conjunts are in the unsatisfiable core [2022-03-20 08:18:01,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:18:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-03-20 08:18:01,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:18:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-03-20 08:18:04,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127917383] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:18:04,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:18:04,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 48] total 82 [2022-03-20 08:18:04,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309723584] [2022-03-20 08:18:04,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:18:04,145 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-03-20 08:18:04,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:18:04,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-03-20 08:18:04,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=689, Invalid=5953, Unknown=0, NotChecked=0, Total=6642 [2022-03-20 08:18:04,147 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) [2022-03-20 08:20:31,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:20:31,425 INFO L93 Difference]: Finished difference Result 113 states and 158 transitions. [2022-03-20 08:20:31,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-20 08:20:31,426 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 [2022-03-20 08:20:31,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:20:31,427 INFO L225 Difference]: With dead ends: 113 [2022-03-20 08:20:31,427 INFO L226 Difference]: Without dead ends: 108 [2022-03-20 08:20:31,431 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 172 SyntacticMatches, 15 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3051 ImplicationChecksByTransitivity, 147.4s TimeCoverageRelationStatistics Valid=3098, Invalid=17491, Unknown=3, NotChecked=0, Total=20592 [2022-03-20 08:20:31,432 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 87 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 3829 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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 [2022-03-20 08:20:31,432 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] [2022-03-20 08:20:31,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-03-20 08:20:31,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-03-20 08:20:31,444 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) [2022-03-20 08:20:31,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 138 transitions. [2022-03-20 08:20:31,445 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 138 transitions. Word has length 101 [2022-03-20 08:20:31,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:20:31,446 INFO L478 AbstractCegarLoop]: Abstraction has 108 states and 138 transitions. [2022-03-20 08:20:31,446 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) [2022-03-20 08:20:31,446 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 138 transitions. [2022-03-20 08:20:31,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-03-20 08:20:31,455 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:20:31,455 INFO L499 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:20:31,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-20 08:20:31,668 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 [2022-03-20 08:20:31,669 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:20:31,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:20:31,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1223308735, now seen corresponding path program 5 times [2022-03-20 08:20:31,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:20:31,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034361633] [2022-03-20 08:20:31,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:20:31,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:20:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:20:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 08:20:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 08:20:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 08:20:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 08:20:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 08:20:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-20 08:20:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-20 08:20:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 08:20:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-20 08:20:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-20 08:20:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-03-20 08:20:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 08:20:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-20 08:20:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-20 08:20:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-20 08:20:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-20 08:20:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-20 08:20:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-20 08:20:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-20 08:20:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-20 08:20:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-20 08:20:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-20 08:20:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-20 08:20:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-20 08:20:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-20 08:20:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-20 08:20:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-20 08:20:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-03-20 08:20:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-20 08:20:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-20 08:20:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-20 08:20:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:33,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-03-20 08:20:33,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:20:33,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034361633] [2022-03-20 08:20:33,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034361633] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:20:33,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636899885] [2022-03-20 08:20:33,684 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-20 08:20:33,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:20:33,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:20:33,692 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) [2022-03-20 08:20:33,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 08:20:50,494 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2022-03-20 08:20:50,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:20:50,505 WARN L261 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 313 conjunts are in the unsatisfiable core [2022-03-20 08:20:50,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:20:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-03-20 08:20:52,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-03-20 08:21:01,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636899885] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:01,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:01,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 96] total 162 [2022-03-20 08:21:01,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965276433] [2022-03-20 08:21:01,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:01,760 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2022-03-20 08:21:01,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:01,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2022-03-20 08:21:01,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2401, Invalid=23681, Unknown=0, NotChecked=0, Total=26082 [2022-03-20 08:21:01,766 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) [2022-03-20 08:22:05,078 WARN L232 SmtUtils]: Spent 6.85s 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) [2022-03-20 08:23:29,748 WARN L232 SmtUtils]: Spent 7.87s 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) [2022-03-20 08:23:31,950 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 [2022-03-20 08:24:57,519 WARN L232 SmtUtils]: Spent 5.20s 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) [2022-03-20 08:26:23,258 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 [2022-03-20 08:28:56,044 WARN L232 SmtUtils]: Spent 5.81s 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) [2022-03-20 08:28:58,171 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 [2022-03-20 08:31:23,980 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