/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/ldv-regression/ex3_forlist.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:02:03,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:02:03,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:02:03,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:02:03,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:02:03,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:02:03,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:02:03,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:02:03,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:02:03,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:02:03,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:02:03,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:02:03,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:02:03,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:02:03,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:02:03,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:02:03,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:02:03,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:02:03,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:02:03,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:02:03,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:02:03,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:02:03,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:02:03,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:02:03,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:02:03,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:02:03,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:02:03,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:02:03,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:02:03,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:02:03,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:02:03,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:02:03,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:02:03,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:02:03,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:02:03,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:02:03,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:02:03,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:02:03,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:02:03,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:02:03,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:02:03,826 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:02:03,849 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:02:03,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:02:03,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:02:03,850 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:02:03,851 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:02:03,851 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:02:03,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:02:03,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:02:03,852 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:02:03,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:02:03,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:02:03,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:02:03,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:02:03,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:02:03,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:02:03,853 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:02:03,853 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:02:03,853 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:02:03,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:02:03,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:02:03,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:02:03,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:02:03,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:02:03,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:02:03,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:02:03,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:02:03,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:02:03,854 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:02:03,854 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:02:03,854 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:02:03,854 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:02:03,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:02:03,854 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:02:03,854 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:02:04,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:02:04,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:02:04,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:02:04,065 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:02:04,066 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:02:04,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/ex3_forlist.i [2022-01-10 06:02:04,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b543e909b/3c8054c0d9a84d22b7659aa685d737ca/FLAGcb30e8564 [2022-01-10 06:02:04,474 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:02:04,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/ex3_forlist.i [2022-01-10 06:02:04,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b543e909b/3c8054c0d9a84d22b7659aa685d737ca/FLAGcb30e8564 [2022-01-10 06:02:04,505 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b543e909b/3c8054c0d9a84d22b7659aa685d737ca [2022-01-10 06:02:04,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:02:04,509 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:02:04,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:02:04,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:02:04,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:02:04,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:02:04" (1/1) ... [2022-01-10 06:02:04,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d3a047f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:02:04, skipping insertion in model container [2022-01-10 06:02:04,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:02:04" (1/1) ... [2022-01-10 06:02:04,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:02:04,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:02:04,681 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/ex3_forlist.i[293,306] [2022-01-10 06:02:04,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:02:04,718 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:02:04,728 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/ex3_forlist.i[293,306] [2022-01-10 06:02:04,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:02:04,749 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:02:04,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:02:04 WrapperNode [2022-01-10 06:02:04,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:02:04,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:02:04,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:02:04,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:02:04,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:02:04" (1/1) ... [2022-01-10 06:02:04,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:02:04" (1/1) ... [2022-01-10 06:02:04,785 INFO L137 Inliner]: procedures = 22, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-01-10 06:02:04,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:02:04,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:02:04,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:02:04,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:02:04,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:02:04" (1/1) ... [2022-01-10 06:02:04,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:02:04" (1/1) ... [2022-01-10 06:02:04,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:02:04" (1/1) ... [2022-01-10 06:02:04,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:02:04" (1/1) ... [2022-01-10 06:02:04,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:02:04" (1/1) ... [2022-01-10 06:02:04,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:02:04" (1/1) ... [2022-01-10 06:02:04,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:02:04" (1/1) ... [2022-01-10 06:02:04,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:02:04,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:02:04,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:02:04,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:02:04,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:02:04" (1/1) ... [2022-01-10 06:02:04,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:02:04,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:02:04,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 06:02:04,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 06:02:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 06:02:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-10 06:02:04,870 INFO L138 BoogieDeclarations]: Found implementation of procedure malloc [2022-01-10 06:02:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 06:02:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:02:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-01-10 06:02:04,870 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-01-10 06:02:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure g [2022-01-10 06:02:04,870 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2022-01-10 06:02:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:02:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 06:02:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 06:02:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 06:02:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:02:04,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:02:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 06:02:04,921 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:02:04,922 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:02:05,114 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:02:05,118 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:02:05,118 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 06:02:05,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:02:05 BoogieIcfgContainer [2022-01-10 06:02:05,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:02:05,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:02:05,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:02:05,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:02:05,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:02:04" (1/3) ... [2022-01-10 06:02:05,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ea9376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:02:05, skipping insertion in model container [2022-01-10 06:02:05,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:02:04" (2/3) ... [2022-01-10 06:02:05,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ea9376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:02:05, skipping insertion in model container [2022-01-10 06:02:05,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:02:05" (3/3) ... [2022-01-10 06:02:05,131 INFO L111 eAbstractionObserver]: Analyzing ICFG ex3_forlist.i [2022-01-10 06:02:05,134 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:02:05,134 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:02:05,165 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:02:05,170 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 06:02:05,170 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:02:05,184 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 06:02:05,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-10 06:02:05,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:02:05,188 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:02:05,189 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:02:05,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:02:05,192 INFO L85 PathProgramCache]: Analyzing trace with hash -431383929, now seen corresponding path program 1 times [2022-01-10 06:02:05,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:02:05,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620206506] [2022-01-10 06:02:05,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:02:05,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:02:05,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:02:05,204 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:02:05,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:02:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:02:05,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:02:05,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:05,364 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:02:05,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:02:05,365 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:02:05,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620206506] [2022-01-10 06:02:05,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620206506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:02:05,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:02:05,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:02:05,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199156488] [2022-01-10 06:02:05,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:02:05,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:02:05,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:02:05,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:02:05,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:02:05,388 INFO L87 Difference]: Start difference. First operand has 38 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:02:05,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:02:05,409 INFO L93 Difference]: Finished difference Result 71 states and 97 transitions. [2022-01-10 06:02:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:02:05,411 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2022-01-10 06:02:05,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:02:05,416 INFO L225 Difference]: With dead ends: 71 [2022-01-10 06:02:05,416 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 06:02:05,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:02:05,422 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:02:05,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:02:05,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 06:02:05,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-01-10 06:02:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-10 06:02:05,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-01-10 06:02:05,452 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 31 [2022-01-10 06:02:05,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:02:05,453 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-01-10 06:02:05,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:02:05,455 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-01-10 06:02:05,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-10 06:02:05,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:02:05,456 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:02:05,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:02:05,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:02:05,664 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:02:05,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:02:05,665 INFO L85 PathProgramCache]: Analyzing trace with hash -621686623, now seen corresponding path program 1 times [2022-01-10 06:02:05,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:02:05,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699085165] [2022-01-10 06:02:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:02:05,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:02:05,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:02:05,670 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:02:05,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:02:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:02:05,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:02:05,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 06:02:05,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:02:05,815 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:02:05,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699085165] [2022-01-10 06:02:05,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699085165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:02:05,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:02:05,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:02:05,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160768486] [2022-01-10 06:02:05,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:02:05,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:02:05,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:02:05,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:02:05,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:02:05,818 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:02:05,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:02:05,866 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2022-01-10 06:02:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:02:05,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2022-01-10 06:02:05,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:02:05,868 INFO L225 Difference]: With dead ends: 64 [2022-01-10 06:02:05,868 INFO L226 Difference]: Without dead ends: 35 [2022-01-10 06:02:05,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:02:05,869 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:02:05,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 74 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:02:05,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-10 06:02:05,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-01-10 06:02:05,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-10 06:02:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-01-10 06:02:05,880 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 31 [2022-01-10 06:02:05,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:02:05,880 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-01-10 06:02:05,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:02:05,881 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-01-10 06:02:05,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 06:02:05,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:02:05,882 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:02:05,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 06:02:06,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:02:06,092 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:02:06,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:02:06,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1110999905, now seen corresponding path program 1 times [2022-01-10 06:02:06,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:02:06,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780582296] [2022-01-10 06:02:06,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:02:06,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:02:06,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:02:06,106 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:02:06,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 06:02:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:02:06,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:02:06,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:06,229 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 06:02:06,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:02:06,297 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 06:02:06,298 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:02:06,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780582296] [2022-01-10 06:02:06,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780582296] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:02:06,298 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:02:06,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 06:02:06,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473330517] [2022-01-10 06:02:06,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:02:06,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:02:06,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:02:06,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:02:06,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:02:06,317 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-10 06:02:06,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:02:06,394 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2022-01-10 06:02:06,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:02:06,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 33 [2022-01-10 06:02:06,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:02:06,396 INFO L225 Difference]: With dead ends: 66 [2022-01-10 06:02:06,396 INFO L226 Difference]: Without dead ends: 37 [2022-01-10 06:02:06,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:02:06,397 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 3 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:02:06,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 110 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:02:06,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-10 06:02:06,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2022-01-10 06:02:06,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-10 06:02:06,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2022-01-10 06:02:06,401 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2022-01-10 06:02:06,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:02:06,401 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2022-01-10 06:02:06,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-10 06:02:06,402 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2022-01-10 06:02:06,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 06:02:06,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:02:06,402 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:02:06,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:02:06,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:02:06,610 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:02:06,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:02:06,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1105338653, now seen corresponding path program 2 times [2022-01-10 06:02:06,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:02:06,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355782395] [2022-01-10 06:02:06,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:02:06,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:02:06,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:02:06,628 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:02:06,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 06:02:06,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 06:02:06,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:02:06,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:02:06,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:06,761 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 06:02:06,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:02:06,762 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:02:06,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355782395] [2022-01-10 06:02:06,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355782395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:02:06,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:02:06,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:02:06,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007424410] [2022-01-10 06:02:06,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:02:06,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:02:06,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:02:06,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:02:06,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:02:06,764 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:02:06,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:02:06,821 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2022-01-10 06:02:06,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:02:06,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 35 [2022-01-10 06:02:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:02:06,846 INFO L225 Difference]: With dead ends: 60 [2022-01-10 06:02:06,846 INFO L226 Difference]: Without dead ends: 41 [2022-01-10 06:02:06,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:02:06,847 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:02:06,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 72 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:02:06,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-10 06:02:06,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2022-01-10 06:02:06,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-10 06:02:06,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-01-10 06:02:06,852 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 35 [2022-01-10 06:02:06,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:02:06,852 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-01-10 06:02:06,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:02:06,853 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-01-10 06:02:06,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 06:02:06,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:02:06,853 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:02:06,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:02:07,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:02:07,064 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:02:07,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:02:07,064 INFO L85 PathProgramCache]: Analyzing trace with hash 828026235, now seen corresponding path program 1 times [2022-01-10 06:02:07,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:02:07,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620796189] [2022-01-10 06:02:07,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:02:07,066 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:02:07,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:02:07,067 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:02:07,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:02:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:02:07,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:02:07,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:07,276 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-01-10 06:02:07,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-01-10 06:02:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 06:02:07,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:02:07,362 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:02:07,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620796189] [2022-01-10 06:02:07,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620796189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:02:07,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:02:07,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:02:07,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330050417] [2022-01-10 06:02:07,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:02:07,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:02:07,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:02:07,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:02:07,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:02:07,364 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:02:07,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:02:07,731 INFO L93 Difference]: Finished difference Result 79 states and 101 transitions. [2022-01-10 06:02:07,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:02:07,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2022-01-10 06:02:07,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:02:07,734 INFO L225 Difference]: With dead ends: 79 [2022-01-10 06:02:07,734 INFO L226 Difference]: Without dead ends: 68 [2022-01-10 06:02:07,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:02:07,735 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 28 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:02:07,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 170 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:02:07,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-10 06:02:07,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2022-01-10 06:02:07,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 46 states have internal predecessors, (57), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2022-01-10 06:02:07,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 78 transitions. [2022-01-10 06:02:07,745 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 78 transitions. Word has length 37 [2022-01-10 06:02:07,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:02:07,746 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 78 transitions. [2022-01-10 06:02:07,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:02:07,747 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 78 transitions. [2022-01-10 06:02:07,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 06:02:07,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:02:07,752 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:02:07,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:02:07,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:02:07,953 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:02:07,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:02:07,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2143087823, now seen corresponding path program 1 times [2022-01-10 06:02:07,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:02:07,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920685815] [2022-01-10 06:02:07,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:02:07,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:02:07,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:02:07,956 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:02:07,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 06:02:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:02:08,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 06:02:08,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:08,455 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-01-10 06:02:08,461 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:08,528 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2022-01-10 06:02:08,678 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 06:02:08,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:02:08,982 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:02:08,982 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-01-10 06:02:08,987 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 30 [2022-01-10 06:02:09,132 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:02:09,133 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-01-10 06:02:09,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 06:02:09,154 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:02:09,154 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-01-10 06:02:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 06:02:09,729 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:02:09,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920685815] [2022-01-10 06:02:09,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1920685815] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:02:09,729 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:02:09,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2022-01-10 06:02:09,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374038940] [2022-01-10 06:02:09,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:02:09,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-10 06:02:09,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:02:09,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-10 06:02:09,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2022-01-10 06:02:09,731 INFO L87 Difference]: Start difference. First operand 60 states and 78 transitions. Second operand has 27 states, 25 states have (on average 1.96) internal successors, (49), 19 states have internal predecessors, (49), 7 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-01-10 06:02:12,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:02:12,032 INFO L93 Difference]: Finished difference Result 129 states and 158 transitions. [2022-01-10 06:02:12,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-10 06:02:12,033 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.96) internal successors, (49), 19 states have internal predecessors, (49), 7 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 40 [2022-01-10 06:02:12,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:02:12,034 INFO L225 Difference]: With dead ends: 129 [2022-01-10 06:02:12,034 INFO L226 Difference]: Without dead ends: 105 [2022-01-10 06:02:12,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=314, Invalid=1942, Unknown=0, NotChecked=0, Total=2256 [2022-01-10 06:02:12,036 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 168 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:02:12,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 93 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 655 Invalid, 0 Unknown, 58 Unchecked, 1.3s Time] [2022-01-10 06:02:12,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-01-10 06:02:12,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2022-01-10 06:02:12,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 74 states have internal predecessors, (90), 11 states have call successors, (11), 8 states have call predecessors, (11), 12 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2022-01-10 06:02:12,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 117 transitions. [2022-01-10 06:02:12,047 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 117 transitions. Word has length 40 [2022-01-10 06:02:12,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:02:12,048 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 117 transitions. [2022-01-10 06:02:12,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.96) internal successors, (49), 19 states have internal predecessors, (49), 7 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-01-10 06:02:12,048 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 117 transitions. [2022-01-10 06:02:12,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 06:02:12,048 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:02:12,048 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:02:12,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:02:12,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:02:12,261 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:02:12,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:02:12,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1706015329, now seen corresponding path program 1 times [2022-01-10 06:02:12,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:02:12,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156798158] [2022-01-10 06:02:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:02:12,263 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:02:12,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:02:12,264 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:02:12,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 06:02:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:02:12,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 06:02:12,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:12,558 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-01-10 06:02:12,597 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:02:12,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:02:12,756 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 29 [2022-01-10 06:02:12,767 INFO L353 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-01-10 06:02:12,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2022-01-10 06:02:12,818 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-01-10 06:02:12,830 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 06:02:12,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:02:12,956 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_261 (_ BitVec 32)) (v_ArrVal_262 (Array (_ BitVec 64) (_ BitVec 32)))) (= (select (store (select (store |c_#memory_int| |c_~#pp~0.base| v_ArrVal_262) |c_~#pstate~0.base|) (bvadd |c_~#pstate~0.offset| (bvmul ((_ sign_extend 32) (_ bv1 32)) (_ bv4 64))) v_ArrVal_261) (bvadd |c_~#pstate~0.offset| (bvmul ((_ sign_extend 32) (_ bv0 32)) (_ bv4 64)))) (_ bv1 32))) is different from false [2022-01-10 06:02:12,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:02:12,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156798158] [2022-01-10 06:02:12,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156798158] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:02:12,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1548963623] [2022-01-10 06:02:12,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:02:12,958 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-01-10 06:02:12,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-01-10 06:02:12,960 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-01-10 06:02:12,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-01-10 06:02:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:02:13,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-10 06:02:13,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:13,457 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-01-10 06:02:13,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:02:13,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:02:13,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 29 [2022-01-10 06:02:13,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:02:13,766 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 28 [2022-01-10 06:02:13,843 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2022-01-10 06:02:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 06:02:13,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:02:13,939 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_338 (_ BitVec 32)) (v_ArrVal_337 (Array (_ BitVec 64) (_ BitVec 32)))) (= (_ bv1 32) (select (store (select (store |c_#memory_int| |c_~#pp~0.base| v_ArrVal_337) |c_~#pstate~0.base|) (bvadd |c_~#pstate~0.offset| (bvmul ((_ sign_extend 32) (_ bv1 32)) (_ bv4 64))) v_ArrVal_338) (bvadd |c_~#pstate~0.offset| (bvmul ((_ sign_extend 32) (_ bv0 32)) (_ bv4 64)))))) is different from false [2022-01-10 06:02:13,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1548963623] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:02:13,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:02:13,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-01-10 06:02:13,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305895327] [2022-01-10 06:02:13,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:02:13,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-10 06:02:13,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:02:13,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-10 06:02:13,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=397, Unknown=20, NotChecked=86, Total=600 [2022-01-10 06:02:13,941 INFO L87 Difference]: Start difference. First operand 93 states and 117 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 16 states have internal predecessors, (52), 6 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:02:14,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:02:14,899 INFO L93 Difference]: Finished difference Result 240 states and 306 transitions. [2022-01-10 06:02:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 06:02:14,900 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 16 states have internal predecessors, (52), 6 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 40 [2022-01-10 06:02:14,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:02:14,901 INFO L225 Difference]: With dead ends: 240 [2022-01-10 06:02:14,901 INFO L226 Difference]: Without dead ends: 179 [2022-01-10 06:02:14,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=910, Unknown=45, NotChecked=134, Total=1332 [2022-01-10 06:02:14,903 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 210 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 162 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 06:02:14,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 391 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 333 Invalid, 0 Unknown, 162 Unchecked, 0.7s Time] [2022-01-10 06:02:14,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-01-10 06:02:14,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 111. [2022-01-10 06:02:14,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 83 states have (on average 1.3012048192771084) internal successors, (108), 90 states have internal predecessors, (108), 12 states have call successors, (12), 9 states have call predecessors, (12), 15 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2022-01-10 06:02:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 138 transitions. [2022-01-10 06:02:14,929 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 138 transitions. Word has length 40 [2022-01-10 06:02:14,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:02:14,929 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 138 transitions. [2022-01-10 06:02:14,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 16 states have internal predecessors, (52), 6 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:02:14,930 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 138 transitions. [2022-01-10 06:02:14,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 06:02:14,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:02:14,932 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:02:14,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-01-10 06:02:15,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 06:02:15,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:02:15,345 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:02:15,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:02:15,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1241136008, now seen corresponding path program 1 times [2022-01-10 06:02:15,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:02:15,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620336452] [2022-01-10 06:02:15,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:02:15,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:02:15,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:02:15,347 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:02:15,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 06:02:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:02:15,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:02:15,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:02:15,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:02:15,609 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:02:15,610 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:02:15,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620336452] [2022-01-10 06:02:15,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620336452] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:02:15,610 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:02:15,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 06:02:15,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494436607] [2022-01-10 06:02:15,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:02:15,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:02:15,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:02:15,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:02:15,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:02:15,612 INFO L87 Difference]: Start difference. First operand 111 states and 138 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:02:15,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:02:15,731 INFO L93 Difference]: Finished difference Result 145 states and 180 transitions. [2022-01-10 06:02:15,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:02:15,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2022-01-10 06:02:15,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:02:15,733 INFO L225 Difference]: With dead ends: 145 [2022-01-10 06:02:15,733 INFO L226 Difference]: Without dead ends: 126 [2022-01-10 06:02:15,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:02:15,734 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 17 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:02:15,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 118 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:02:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-01-10 06:02:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 113. [2022-01-10 06:02:15,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 92 states have internal predecessors, (110), 12 states have call successors, (12), 9 states have call predecessors, (12), 15 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2022-01-10 06:02:15,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 140 transitions. [2022-01-10 06:02:15,754 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 140 transitions. Word has length 42 [2022-01-10 06:02:15,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:02:15,755 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 140 transitions. [2022-01-10 06:02:15,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:02:15,756 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 140 transitions. [2022-01-10 06:02:15,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 06:02:15,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:02:15,757 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:02:15,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 06:02:15,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:02:15,966 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:02:15,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:02:15,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1965354537, now seen corresponding path program 1 times [2022-01-10 06:02:15,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:02:15,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487733522] [2022-01-10 06:02:15,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:02:15,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:02:15,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:02:15,968 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:02:16,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 06:02:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:02:16,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 06:02:16,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:16,164 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-01-10 06:02:16,376 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-01-10 06:02:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:02:16,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:02:16,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-01-10 06:02:16,562 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 32 [2022-01-10 06:02:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 06:02:16,609 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:02:16,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487733522] [2022-01-10 06:02:16,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487733522] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:02:16,609 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:02:16,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2022-01-10 06:02:16,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58994741] [2022-01-10 06:02:16,609 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:02:16,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 06:02:16,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:02:16,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 06:02:16,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:02:16,610 INFO L87 Difference]: Start difference. First operand 113 states and 140 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:02:17,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:02:17,841 INFO L93 Difference]: Finished difference Result 198 states and 254 transitions. [2022-01-10 06:02:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 06:02:17,843 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2022-01-10 06:02:17,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:02:17,844 INFO L225 Difference]: With dead ends: 198 [2022-01-10 06:02:17,844 INFO L226 Difference]: Without dead ends: 172 [2022-01-10 06:02:17,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:02:17,845 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 45 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:02:17,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 370 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 06:02:17,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-01-10 06:02:17,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 156. [2022-01-10 06:02:17,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 119 states have (on average 1.3277310924369747) internal successors, (158), 129 states have internal predecessors, (158), 16 states have call successors, (16), 11 states have call predecessors, (16), 20 states have return successors, (26), 15 states have call predecessors, (26), 11 states have call successors, (26) [2022-01-10 06:02:17,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 200 transitions. [2022-01-10 06:02:17,886 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 200 transitions. Word has length 43 [2022-01-10 06:02:17,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:02:17,886 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 200 transitions. [2022-01-10 06:02:17,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:02:17,886 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 200 transitions. [2022-01-10 06:02:17,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 06:02:17,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:02:17,887 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:02:17,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 06:02:18,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:02:18,111 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:02:18,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:02:18,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1392073365, now seen corresponding path program 2 times [2022-01-10 06:02:18,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:02:18,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063714177] [2022-01-10 06:02:18,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:02:18,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:02:18,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:02:18,114 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:02:18,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 06:02:18,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:02:18,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:02:18,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-10 06:02:18,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:18,471 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-01-10 06:02:18,521 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:02:18,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:02:18,627 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 29 [2022-01-10 06:02:18,641 INFO L353 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-01-10 06:02:18,641 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2022-01-10 06:02:18,769 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-01-10 06:02:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 06:02:18,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:02:18,985 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_530 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_529 (_ BitVec 32))) (= (select (store (select (store |c_#memory_int| |c_~#pp~0.base| v_ArrVal_530) |c_~#pstate~0.base|) (bvadd |c_~#pstate~0.offset| (bvmul ((_ sign_extend 32) (_ bv0 32)) (_ bv4 64))) v_ArrVal_529) (bvadd |c_~#pstate~0.offset| (bvmul ((_ sign_extend 32) (_ bv1 32)) (_ bv4 64)))) (_ bv1 32))) is different from false [2022-01-10 06:02:18,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:02:18,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063714177] [2022-01-10 06:02:18,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063714177] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:02:18,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [142626772] [2022-01-10 06:02:18,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:02:18,988 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-01-10 06:02:18,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-01-10 06:02:18,989 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-01-10 06:02:18,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-01-10 06:02:19,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:02:19,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:02:19,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 06:02:19,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:19,531 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-01-10 06:02:19,607 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:02:19,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:02:19,793 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 29 [2022-01-10 06:02:19,805 INFO L353 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-01-10 06:02:19,806 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2022-01-10 06:02:20,041 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2022-01-10 06:02:20,044 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 06:02:20,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:02:20,164 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_604 (Array (_ BitVec 64) (_ BitVec 32))) (v_f_~i~1_60 (_ BitVec 32))) (= (select (store (select (store |c_#memory_int| |c_~#pp~0.base| v_ArrVal_604) |c_~#pstate~0.base|) (bvadd |c_~#pstate~0.offset| (bvmul ((_ sign_extend 32) v_f_~i~1_60) (_ bv4 64))) (_ bv1 32)) (bvadd |c_~#pstate~0.offset| (bvmul ((_ sign_extend 32) (_ bv1 32)) (_ bv4 64)))) (_ bv1 32))) is different from false [2022-01-10 06:02:20,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [142626772] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:02:20,166 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:02:20,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2022-01-10 06:02:20,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692386443] [2022-01-10 06:02:20,167 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:02:20,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 06:02:20,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:02:20,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 06:02:20,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=582, Unknown=22, NotChecked=102, Total=812 [2022-01-10 06:02:20,168 INFO L87 Difference]: Start difference. First operand 156 states and 200 transitions. Second operand has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 20 states have internal predecessors, (62), 6 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:02:22,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:02:22,360 INFO L93 Difference]: Finished difference Result 355 states and 456 transitions. [2022-01-10 06:02:22,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-10 06:02:22,360 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 20 states have internal predecessors, (62), 6 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 43 [2022-01-10 06:02:22,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:02:22,362 INFO L225 Difference]: With dead ends: 355 [2022-01-10 06:02:22,362 INFO L226 Difference]: Without dead ends: 325 [2022-01-10 06:02:22,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=402, Invalid=1984, Unknown=72, NotChecked=194, Total=2652 [2022-01-10 06:02:22,363 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 130 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 317 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:02:22,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 726 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 692 Invalid, 0 Unknown, 317 Unchecked, 1.4s Time] [2022-01-10 06:02:22,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-01-10 06:02:22,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 242. [2022-01-10 06:02:22,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 188 states have (on average 1.351063829787234) internal successors, (254), 199 states have internal predecessors, (254), 26 states have call successors, (26), 17 states have call predecessors, (26), 27 states have return successors, (36), 25 states have call predecessors, (36), 15 states have call successors, (36) [2022-01-10 06:02:22,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 316 transitions. [2022-01-10 06:02:22,386 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 316 transitions. Word has length 43 [2022-01-10 06:02:22,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:02:22,386 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 316 transitions. [2022-01-10 06:02:22,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 20 states have internal predecessors, (62), 6 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:02:22,386 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 316 transitions. [2022-01-10 06:02:22,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 06:02:22,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:02:22,386 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:02:22,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2022-01-10 06:02:22,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 06:02:22,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:02:22,803 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:02:22,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:02:22,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1829145859, now seen corresponding path program 2 times [2022-01-10 06:02:22,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:02:22,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995440084] [2022-01-10 06:02:22,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:02:22,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:02:22,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:02:22,804 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:02:22,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 06:02:23,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:02:23,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:02:23,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 06:02:23,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:23,303 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-01-10 06:02:23,305 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:23,399 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2022-01-10 06:02:23,590 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:02:23,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:02:24,088 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:02:24,089 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-01-10 06:02:24,091 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 30 [2022-01-10 06:02:24,251 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:02:24,252 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-01-10 06:02:24,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 06:02:24,263 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:02:24,263 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-01-10 06:02:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:02:24,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:02:24,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995440084] [2022-01-10 06:02:24,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995440084] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:02:24,756 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:02:24,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 30 [2022-01-10 06:02:24,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324109519] [2022-01-10 06:02:24,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:02:24,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-10 06:02:24,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:02:24,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-10 06:02:24,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2022-01-10 06:02:24,757 INFO L87 Difference]: Start difference. First operand 242 states and 316 transitions. Second operand has 30 states, 26 states have (on average 2.269230769230769) internal successors, (59), 24 states have internal predecessors, (59), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-10 06:02:27,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:02:27,547 INFO L93 Difference]: Finished difference Result 363 states and 466 transitions. [2022-01-10 06:02:27,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-10 06:02:27,548 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 2.269230769230769) internal successors, (59), 24 states have internal predecessors, (59), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 43 [2022-01-10 06:02:27,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:02:27,550 INFO L225 Difference]: With dead ends: 363 [2022-01-10 06:02:27,550 INFO L226 Difference]: Without dead ends: 327 [2022-01-10 06:02:27,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=308, Invalid=1762, Unknown=0, NotChecked=0, Total=2070 [2022-01-10 06:02:27,552 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 121 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 06:02:27,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 513 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 649 Invalid, 0 Unknown, 107 Unchecked, 1.9s Time] [2022-01-10 06:02:27,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-01-10 06:02:27,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 275. [2022-01-10 06:02:27,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 217 states have (on average 1.3502304147465438) internal successors, (293), 226 states have internal predecessors, (293), 29 states have call successors, (29), 20 states have call predecessors, (29), 28 states have return successors, (34), 28 states have call predecessors, (34), 15 states have call successors, (34) [2022-01-10 06:02:27,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 356 transitions. [2022-01-10 06:02:27,580 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 356 transitions. Word has length 43 [2022-01-10 06:02:27,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:02:27,580 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 356 transitions. [2022-01-10 06:02:27,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 2.269230769230769) internal successors, (59), 24 states have internal predecessors, (59), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-10 06:02:27,580 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 356 transitions. [2022-01-10 06:02:27,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 06:02:27,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:02:27,599 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:02:27,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 06:02:27,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:02:27,800 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:02:27,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:02:27,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2069113328, now seen corresponding path program 1 times [2022-01-10 06:02:27,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:02:27,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118464850] [2022-01-10 06:02:27,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:02:27,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:02:27,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:02:27,802 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:02:27,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 06:02:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:02:27,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-10 06:02:27,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:28,251 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-01-10 06:02:28,253 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:28,258 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-01-10 06:02:28,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:28,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:02:28,353 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2022-01-10 06:02:28,548 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-01-10 06:02:28,551 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 11 [2022-01-10 06:02:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:02:28,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:02:29,102 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:02:29,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-01-10 06:02:29,104 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 27 [2022-01-10 06:02:29,107 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-01-10 06:02:29,112 INFO L353 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2022-01-10 06:02:29,112 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 1 [2022-01-10 06:02:29,212 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:02:29,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-01-10 06:02:29,214 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 06:02:29,223 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:02:29,223 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2022-01-10 06:02:29,252 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:02:29,253 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-01-10 06:02:29,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 06:02:29,264 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:02:29,265 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2022-01-10 06:02:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 06:02:29,420 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:02:29,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118464850] [2022-01-10 06:02:29,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118464850] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:02:29,420 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:02:29,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 23 [2022-01-10 06:02:29,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157809439] [2022-01-10 06:02:29,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:02:29,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-10 06:02:29,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:02:29,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-10 06:02:29,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-01-10 06:02:29,421 INFO L87 Difference]: Start difference. First operand 275 states and 356 transitions. Second operand has 23 states, 21 states have (on average 2.619047619047619) internal successors, (55), 17 states have internal predecessors, (55), 5 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-01-10 06:02:32,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 06:02:34,706 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 06:02:35,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:02:35,696 INFO L93 Difference]: Finished difference Result 345 states and 444 transitions. [2022-01-10 06:02:35,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:02:35,697 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.619047619047619) internal successors, (55), 17 states have internal predecessors, (55), 5 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 45 [2022-01-10 06:02:35,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:02:35,700 INFO L225 Difference]: With dead ends: 345 [2022-01-10 06:02:35,700 INFO L226 Difference]: Without dead ends: 314 [2022-01-10 06:02:35,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2022-01-10 06:02:35,701 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 83 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 40 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-01-10 06:02:35,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 133 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 784 Invalid, 2 Unknown, 52 Unchecked, 5.7s Time] [2022-01-10 06:02:35,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-01-10 06:02:35,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 269. [2022-01-10 06:02:35,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 213 states have (on average 1.3427230046948357) internal successors, (286), 221 states have internal predecessors, (286), 28 states have call successors, (28), 20 states have call predecessors, (28), 27 states have return successors, (33), 27 states have call predecessors, (33), 15 states have call successors, (33) [2022-01-10 06:02:35,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 347 transitions. [2022-01-10 06:02:35,722 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 347 transitions. Word has length 45 [2022-01-10 06:02:35,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:02:35,722 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 347 transitions. [2022-01-10 06:02:35,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.619047619047619) internal successors, (55), 17 states have internal predecessors, (55), 5 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-01-10 06:02:35,723 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 347 transitions. [2022-01-10 06:02:35,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 06:02:35,723 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:02:35,723 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:02:35,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 06:02:35,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:02:35,932 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:02:35,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:02:35,933 INFO L85 PathProgramCache]: Analyzing trace with hash -965055082, now seen corresponding path program 2 times [2022-01-10 06:02:35,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:02:35,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587066485] [2022-01-10 06:02:35,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:02:35,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:02:35,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:02:35,934 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:02:35,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 06:02:36,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:02:36,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:02:36,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-10 06:02:36,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:36,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-01-10 06:02:36,173 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:36,250 INFO L353 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-01-10 06:02:36,250 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-01-10 06:02:36,254 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:36,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:02:36,760 INFO L353 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-01-10 06:02:36,761 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-01-10 06:02:36,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:36,796 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:02:36,918 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-01-10 06:02:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 06:02:36,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:02:37,225 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_810 (Array (_ BitVec 64) (_ BitVec 64))) (v_f_~pointer.offset_65 (_ BitVec 64))) (not (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.offset| |c_~#pp~0.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) (_ bv1 32))) |c_~#pp~0.offset|) v_f_~pointer.offset_65)) |c_~#pstate~0.base| v_ArrVal_810) |c_~#pp~0.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) (_ bv0 32))) |c_~#pp~0.offset|)) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2022-01-10 06:02:37,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:02:37,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587066485] [2022-01-10 06:02:37,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587066485] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:02:37,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1846911910] [2022-01-10 06:02:37,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:02:37,227 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-01-10 06:02:37,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-01-10 06:02:37,228 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-01-10 06:02:37,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-01-10 06:02:37,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:02:37,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:02:37,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 06:02:37,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:37,623 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-01-10 06:02:37,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:37,631 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-01-10 06:02:37,635 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:37,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:02:37,850 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-01-10 06:02:37,853 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:37,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:02:37,860 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-01-10 06:02:37,863 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:38,053 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:02:38,062 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:02:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 06:02:38,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:02:39,024 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_866 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_869 (_ BitVec 64))) (= (_ bv0 64) (select (select (store (store |c_#memory_$Pointer$.base| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.base| |c_~#pp~0.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_init_~i~0#1|)) |c_~#pp~0.offset|) v_ArrVal_869)) |c_~#pstate~0.base| v_ArrVal_866) |c_~#pp~0.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) (_ bv0 32))) |c_~#pp~0.offset|)))) (forall ((v_ArrVal_865 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_868 (_ BitVec 64))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.offset| |c_~#pp~0.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_init_~i~0#1|)) |c_~#pp~0.offset|) v_ArrVal_868)) |c_~#pstate~0.base| v_ArrVal_865) |c_~#pp~0.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) (_ bv0 32))) |c_~#pp~0.offset|)) (_ bv0 64)))) is different from false [2022-01-10 06:02:39,046 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_866 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_869 (_ BitVec 64))) (= (_ bv0 64) (select (select (store (store |c_#memory_$Pointer$.base| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.base| |c_~#pp~0.base|) (bvadd (bvmul ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_init_~i~0#1| (_ bv1 32))) (_ bv8 64)) |c_~#pp~0.offset|) v_ArrVal_869)) |c_~#pstate~0.base| v_ArrVal_866) |c_~#pp~0.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) (_ bv0 32))) |c_~#pp~0.offset|)))) (forall ((v_ArrVal_865 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_868 (_ BitVec 64))) (= (_ bv0 64) (select (select (store (store |c_#memory_$Pointer$.offset| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.offset| |c_~#pp~0.base|) (bvadd (bvmul ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_init_~i~0#1| (_ bv1 32))) (_ bv8 64)) |c_~#pp~0.offset|) v_ArrVal_868)) |c_~#pstate~0.base| v_ArrVal_865) |c_~#pp~0.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) (_ bv0 32))) |c_~#pp~0.offset|))))) is different from false [2022-01-10 06:02:39,084 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:02:39,085 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2022-01-10 06:02:39,087 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 101 [2022-01-10 06:02:39,105 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 64 [2022-01-10 06:02:39,110 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 96 [2022-01-10 06:02:39,130 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:02:39,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 81 [2022-01-10 06:02:39,199 INFO L353 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2022-01-10 06:02:39,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 1 [2022-01-10 06:02:39,297 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 3 not checked. [2022-01-10 06:02:39,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1846911910] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:02:39,297 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 06:02:39,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 39 [2022-01-10 06:02:39,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51496965] [2022-01-10 06:02:39,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 06:02:39,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-10 06:02:39,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:02:39,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-10 06:02:39,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1531, Unknown=15, NotChecked=246, Total=1980 [2022-01-10 06:02:39,299 INFO L87 Difference]: Start difference. First operand 269 states and 347 transitions. Second operand has 39 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 33 states have internal predecessors, (88), 7 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) [2022-01-10 06:02:42,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:02:42,417 INFO L93 Difference]: Finished difference Result 310 states and 392 transitions. [2022-01-10 06:02:42,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 06:02:42,426 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 33 states have internal predecessors, (88), 7 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) Word has length 45 [2022-01-10 06:02:42,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:02:42,427 INFO L225 Difference]: With dead ends: 310 [2022-01-10 06:02:42,427 INFO L226 Difference]: Without dead ends: 133 [2022-01-10 06:02:42,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=455, Invalid=2951, Unknown=28, NotChecked=348, Total=3782 [2022-01-10 06:02:42,429 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 145 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:02:42,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 672 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 681 Invalid, 0 Unknown, 199 Unchecked, 2.1s Time] [2022-01-10 06:02:42,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-01-10 06:02:42,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 116. [2022-01-10 06:02:42,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 92 states have (on average 1.2826086956521738) internal successors, (118), 94 states have internal predecessors, (118), 12 states have call successors, (12), 10 states have call predecessors, (12), 11 states have return successors, (12), 11 states have call predecessors, (12), 7 states have call successors, (12) [2022-01-10 06:02:42,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 142 transitions. [2022-01-10 06:02:42,454 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 142 transitions. Word has length 45 [2022-01-10 06:02:42,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:02:42,454 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 142 transitions. [2022-01-10 06:02:42,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 33 states have internal predecessors, (88), 7 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) [2022-01-10 06:02:42,455 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 142 transitions. [2022-01-10 06:02:42,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 06:02:42,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:02:42,455 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:02:42,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2022-01-10 06:02:42,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-01-10 06:02:42,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:02:42,859 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:02:42,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:02:42,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1293534561, now seen corresponding path program 3 times [2022-01-10 06:02:42,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:02:42,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200339464] [2022-01-10 06:02:42,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 06:02:42,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:02:42,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:02:42,861 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:02:42,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 06:02:43,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-10 06:02:43,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:02:43,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-10 06:02:43,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:43,465 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-01-10 06:02:43,467 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:43,472 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-01-10 06:02:43,491 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:43,673 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:02:43,694 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2022-01-10 06:02:44,053 INFO L353 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-01-10 06:02:44,053 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-01-10 06:02:44,060 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:44,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:02:44,065 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-01-10 06:02:44,068 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:44,211 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-01-10 06:02:44,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 8 [2022-01-10 06:02:44,257 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 06:02:44,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:02:44,710 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_963 (Array (_ BitVec 64) (_ BitVec 64))) (v_f_~pointer.offset_75 (_ BitVec 64))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.offset| |c_~#pp~0.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) (_ bv1 32))) |c_~#pp~0.offset|) v_f_~pointer.offset_75)) |c_~#pstate~0.base| v_ArrVal_963) |c_~#pp~0.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) (_ bv0 32))) |c_~#pp~0.offset|)) |c_ULTIMATE.start_main_~a~0#1.offset|)) (forall ((v_ArrVal_964 (Array (_ BitVec 64) (_ BitVec 64))) (v_f_~pointer.base_75 (_ BitVec 64))) (= |c_ULTIMATE.start_main_~a~0#1.base| (select (select (store (store |c_#memory_$Pointer$.base| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.base| |c_~#pp~0.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) (_ bv1 32))) |c_~#pp~0.offset|) v_f_~pointer.base_75)) |c_~#pstate~0.base| v_ArrVal_964) |c_~#pp~0.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) (_ bv0 32))) |c_~#pp~0.offset|))))) is different from false [2022-01-10 06:02:44,712 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:02:44,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200339464] [2022-01-10 06:02:44,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200339464] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:02:44,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [813973171] [2022-01-10 06:02:44,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 06:02:44,713 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-01-10 06:02:44,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-01-10 06:02:44,714 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-01-10 06:02:44,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-01-10 06:02:45,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-10 06:02:45,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:02:45,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-10 06:02:45,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:45,210 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-01-10 06:02:45,309 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:02:45,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:02:45,666 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 29 [2022-01-10 06:02:45,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:02:45,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 28 [2022-01-10 06:02:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 06:02:45,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:02:46,537 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 06:02:46,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [813973171] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:02:46,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 06:02:46,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 7] total 35 [2022-01-10 06:02:46,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487464146] [2022-01-10 06:02:46,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 06:02:46,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-10 06:02:46,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:02:46,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-10 06:02:46,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1330, Unknown=26, NotChecked=74, Total=1560 [2022-01-10 06:02:46,541 INFO L87 Difference]: Start difference. First operand 116 states and 142 transitions. Second operand has 35 states, 33 states have (on average 2.727272727272727) internal successors, (90), 27 states have internal predecessors, (90), 8 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2022-01-10 06:02:51,356 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 06:02:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:02:56,063 INFO L93 Difference]: Finished difference Result 308 states and 389 transitions. [2022-01-10 06:02:56,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-10 06:02:56,064 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 2.727272727272727) internal successors, (90), 27 states have internal predecessors, (90), 8 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) Word has length 46 [2022-01-10 06:02:56,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:02:56,065 INFO L225 Difference]: With dead ends: 308 [2022-01-10 06:02:56,065 INFO L226 Difference]: Without dead ends: 269 [2022-01-10 06:02:56,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3035 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1266, Invalid=9706, Unknown=162, NotChecked=208, Total=11342 [2022-01-10 06:02:56,068 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 500 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 1726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 288 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-01-10 06:02:56,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 146 Invalid, 1726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1220 Invalid, 0 Unknown, 288 Unchecked, 3.9s Time] [2022-01-10 06:02:56,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-01-10 06:02:56,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 186. [2022-01-10 06:02:56,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 163 states have (on average 1.3558282208588956) internal successors, (221), 165 states have internal predecessors, (221), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (11), 10 states have call predecessors, (11), 7 states have call successors, (11) [2022-01-10 06:02:56,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 243 transitions. [2022-01-10 06:02:56,081 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 243 transitions. Word has length 46 [2022-01-10 06:02:56,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:02:56,081 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 243 transitions. [2022-01-10 06:02:56,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 2.727272727272727) internal successors, (90), 27 states have internal predecessors, (90), 8 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2022-01-10 06:02:56,081 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 243 transitions. [2022-01-10 06:02:56,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 06:02:56,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:02:56,081 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:02:56,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-01-10 06:02:56,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-01-10 06:02:56,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:02:56,489 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:02:56,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:02:56,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1487260017, now seen corresponding path program 4 times [2022-01-10 06:02:56,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:02:56,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225645252] [2022-01-10 06:02:56,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 06:02:56,491 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:02:56,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:02:56,493 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:02:56,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 06:02:56,654 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 06:02:56,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:02:56,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:02:56,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:02:56,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:02:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:02:56,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:02:56,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225645252] [2022-01-10 06:02:56,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225645252] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:02:56,799 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:02:56,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-01-10 06:02:56,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128019047] [2022-01-10 06:02:56,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:02:56,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:02:56,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:02:56,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:02:56,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:02:56,800 INFO L87 Difference]: Start difference. First operand 186 states and 243 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:02:56,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:02:56,927 INFO L93 Difference]: Finished difference Result 270 states and 356 transitions. [2022-01-10 06:02:56,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:02:56,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2022-01-10 06:02:56,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:02:56,931 INFO L225 Difference]: With dead ends: 270 [2022-01-10 06:02:56,931 INFO L226 Difference]: Without dead ends: 164 [2022-01-10 06:02:56,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:02:56,934 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:02:56,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 186 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:02:56,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-01-10 06:02:56,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 135. [2022-01-10 06:02:56,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 118 states have (on average 1.305084745762712) internal successors, (154), 119 states have internal predecessors, (154), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-01-10 06:02:56,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 170 transitions. [2022-01-10 06:02:56,947 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 170 transitions. Word has length 46 [2022-01-10 06:02:56,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:02:56,947 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 170 transitions. [2022-01-10 06:02:56,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:02:56,947 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 170 transitions. [2022-01-10 06:02:56,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 06:02:56,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:02:56,947 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:02:56,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 06:02:57,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:02:57,156 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:02:57,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:02:57,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1285134251, now seen corresponding path program 1 times [2022-01-10 06:02:57,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:02:57,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027639529] [2022-01-10 06:02:57,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:02:57,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:02:57,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:02:57,167 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:02:57,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 06:02:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:02:57,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-10 06:02:57,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:57,490 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-01-10 06:02:57,495 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:57,879 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:02:58,069 INFO L353 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-01-10 06:02:58,069 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-01-10 06:02:58,072 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:58,084 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:02:58,333 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:58,447 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-01-10 06:02:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 14 refuted. 2 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 06:02:58,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:02:58,665 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1169 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_1169) |c_~#pp~0.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) (bvadd (_ bv1 32) |c_g_~i~2#1|))) |c_~#pp~0.offset|)) |c_g_~pointer#1.offset|))) is different from false [2022-01-10 06:02:58,696 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1169 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_1169) |c_~#pp~0.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) (_ bv1 32))) |c_~#pp~0.offset|)) |c_g_#in~pointer#1.offset|))) is different from false [2022-01-10 06:02:58,729 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1169 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_1169) |c_~#pp~0.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) (_ bv1 32))) |c_~#pp~0.offset|)) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2022-01-10 06:02:58,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:02:58,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027639529] [2022-01-10 06:02:58,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027639529] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:02:58,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1089347190] [2022-01-10 06:02:58,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:02:58,744 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-01-10 06:02:58,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-01-10 06:02:58,745 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-01-10 06:02:58,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-01-10 06:02:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:02:59,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 39 conjunts are in the unsatisfiable core [2022-01-10 06:02:59,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:02:59,242 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-01-10 06:02:59,245 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:02:59,770 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:03:00,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:03:00,081 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-01-10 06:03:00,084 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2022-01-10 06:03:00,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:03:00,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 8 [2022-01-10 06:03:00,834 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 32 [2022-01-10 06:03:00,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:03:00,994 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 11 [2022-01-10 06:03:01,000 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 16 refuted. 2 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 06:03:01,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:03:01,027 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1231 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= |c_g_~pointer#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_1231) |c_~#pp~0.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) (bvadd (_ bv1 32) |c_g_~i~2#1|))) |c_~#pp~0.offset|))))) is different from false [2022-01-10 06:03:01,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1089347190] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:03:01,556 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:03:01,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 37 [2022-01-10 06:03:01,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420112142] [2022-01-10 06:03:01,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:03:01,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-10 06:03:01,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:03:01,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-10 06:03:01,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1755, Unknown=50, NotChecked=356, Total=2352 [2022-01-10 06:03:01,558 INFO L87 Difference]: Start difference. First operand 135 states and 170 transitions. Second operand has 38 states, 37 states have (on average 1.837837837837838) internal successors, (68), 30 states have internal predecessors, (68), 5 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-01-10 06:03:04,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:03:04,451 INFO L93 Difference]: Finished difference Result 214 states and 271 transitions. [2022-01-10 06:03:04,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-10 06:03:04,452 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.837837837837838) internal successors, (68), 30 states have internal predecessors, (68), 5 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 47 [2022-01-10 06:03:04,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:03:04,453 INFO L225 Difference]: With dead ends: 214 [2022-01-10 06:03:04,453 INFO L226 Difference]: Without dead ends: 174 [2022-01-10 06:03:04,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=384, Invalid=2968, Unknown=86, NotChecked=468, Total=3906 [2022-01-10 06:03:04,454 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 157 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:03:04,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 256 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 879 Invalid, 0 Unknown, 73 Unchecked, 2.0s Time] [2022-01-10 06:03:04,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-10 06:03:04,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 133. [2022-01-10 06:03:04,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 116 states have (on average 1.2844827586206897) internal successors, (149), 117 states have internal predecessors, (149), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-01-10 06:03:04,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 165 transitions. [2022-01-10 06:03:04,463 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 165 transitions. Word has length 47 [2022-01-10 06:03:04,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:03:04,463 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 165 transitions. [2022-01-10 06:03:04,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.837837837837838) internal successors, (68), 30 states have internal predecessors, (68), 5 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-01-10 06:03:04,464 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 165 transitions. [2022-01-10 06:03:04,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 06:03:04,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:03:04,464 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:03:04,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2022-01-10 06:03:04,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 06:03:04,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:03:04,868 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:03:04,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:03:04,868 INFO L85 PathProgramCache]: Analyzing trace with hash 278730410, now seen corresponding path program 1 times [2022-01-10 06:03:04,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:03:04,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574753076] [2022-01-10 06:03:04,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:03:04,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:03:04,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:03:04,870 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:03:04,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 06:03:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:03:05,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-10 06:03:05,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:03:05,782 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-01-10 06:03:05,917 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 8 [2022-01-10 06:03:05,952 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 06:03:05,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:03:06,187 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 30 [2022-01-10 06:03:06,190 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2022-01-10 06:03:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 06:03:07,029 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:03:07,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574753076] [2022-01-10 06:03:07,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574753076] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:03:07,029 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:03:07,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 35 [2022-01-10 06:03:07,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082044243] [2022-01-10 06:03:07,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:03:07,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-10 06:03:07,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:03:07,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-10 06:03:07,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1066, Unknown=1, NotChecked=0, Total=1190 [2022-01-10 06:03:07,030 INFO L87 Difference]: Start difference. First operand 133 states and 165 transitions. Second operand has 35 states, 31 states have (on average 2.129032258064516) internal successors, (66), 24 states have internal predecessors, (66), 8 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2022-01-10 06:03:09,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:03:09,467 INFO L93 Difference]: Finished difference Result 208 states and 257 transitions. [2022-01-10 06:03:09,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-10 06:03:09,468 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 2.129032258064516) internal successors, (66), 24 states have internal predecessors, (66), 8 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) Word has length 53 [2022-01-10 06:03:09,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:03:09,469 INFO L225 Difference]: With dead ends: 208 [2022-01-10 06:03:09,469 INFO L226 Difference]: Without dead ends: 184 [2022-01-10 06:03:09,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=318, Invalid=2435, Unknown=3, NotChecked=0, Total=2756 [2022-01-10 06:03:09,470 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 145 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:03:09,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 156 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 821 Invalid, 0 Unknown, 88 Unchecked, 1.4s Time] [2022-01-10 06:03:09,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-01-10 06:03:09,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 129. [2022-01-10 06:03:09,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 112 states have (on average 1.2589285714285714) internal successors, (141), 113 states have internal predecessors, (141), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-01-10 06:03:09,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 157 transitions. [2022-01-10 06:03:09,480 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 157 transitions. Word has length 53 [2022-01-10 06:03:09,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:03:09,480 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 157 transitions. [2022-01-10 06:03:09,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 2.129032258064516) internal successors, (66), 24 states have internal predecessors, (66), 8 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2022-01-10 06:03:09,480 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 157 transitions. [2022-01-10 06:03:09,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 06:03:09,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:03:09,481 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:03:09,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 06:03:09,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:03:09,692 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:03:09,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:03:09,692 INFO L85 PathProgramCache]: Analyzing trace with hash 374429148, now seen corresponding path program 1 times [2022-01-10 06:03:09,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:03:09,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431654810] [2022-01-10 06:03:09,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:03:09,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:03:09,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:03:09,694 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:03:09,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 06:03:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:03:09,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:03:09,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:03:09,956 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:03:09,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:03:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:03:10,047 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:03:10,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431654810] [2022-01-10 06:03:10,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431654810] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:03:10,048 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:03:10,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-01-10 06:03:10,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066685378] [2022-01-10 06:03:10,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:03:10,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:03:10,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:03:10,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:03:10,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:03:10,049 INFO L87 Difference]: Start difference. First operand 129 states and 157 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:03:10,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:03:10,112 INFO L93 Difference]: Finished difference Result 156 states and 186 transitions. [2022-01-10 06:03:10,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:03:10,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2022-01-10 06:03:10,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:03:10,113 INFO L225 Difference]: With dead ends: 156 [2022-01-10 06:03:10,113 INFO L226 Difference]: Without dead ends: 76 [2022-01-10 06:03:10,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:03:10,114 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:03:10,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 233 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:03:10,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-01-10 06:03:10,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-01-10 06:03:10,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 62 states have internal predecessors, (63), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-10 06:03:10,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2022-01-10 06:03:10,121 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 54 [2022-01-10 06:03:10,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:03:10,121 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2022-01-10 06:03:10,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:03:10,121 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2022-01-10 06:03:10,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 06:03:10,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:03:10,121 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:03:10,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 06:03:10,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:03:10,335 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:03:10,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:03:10,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2067312549, now seen corresponding path program 2 times [2022-01-10 06:03:10,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:03:10,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807576128] [2022-01-10 06:03:10,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:03:10,336 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:03:10,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:03:10,337 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:03:10,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 06:03:10,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:03:10,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:03:10,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-10 06:03:10,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:03:11,318 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:03:11,659 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 8 [2022-01-10 06:03:11,701 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 06:03:11,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:03:12,153 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 30 [2022-01-10 06:03:12,156 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2022-01-10 06:03:12,523 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:03:12,523 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2022-01-10 06:03:13,341 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 06:03:13,341 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:03:13,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807576128] [2022-01-10 06:03:13,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807576128] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:03:13,341 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:03:13,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 39 [2022-01-10 06:03:13,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330688006] [2022-01-10 06:03:13,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:03:13,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-10 06:03:13,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:03:13,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-10 06:03:13,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1351, Unknown=0, NotChecked=0, Total=1482 [2022-01-10 06:03:13,342 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 39 states, 35 states have (on average 2.342857142857143) internal successors, (82), 29 states have internal predecessors, (82), 8 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2022-01-10 06:03:16,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:03:16,189 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2022-01-10 06:03:16,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 06:03:16,190 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 35 states have (on average 2.342857142857143) internal successors, (82), 29 states have internal predecessors, (82), 8 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) Word has length 58 [2022-01-10 06:03:16,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:03:16,190 INFO L225 Difference]: With dead ends: 86 [2022-01-10 06:03:16,190 INFO L226 Difference]: Without dead ends: 59 [2022-01-10 06:03:16,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=274, Invalid=2482, Unknown=0, NotChecked=0, Total=2756 [2022-01-10 06:03:16,191 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 83 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 06:03:16,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 127 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1034 Invalid, 0 Unknown, 96 Unchecked, 1.8s Time] [2022-01-10 06:03:16,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-01-10 06:03:16,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-01-10 06:03:16,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-10 06:03:16,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2022-01-10 06:03:16,197 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 58 [2022-01-10 06:03:16,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:03:16,197 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2022-01-10 06:03:16,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 35 states have (on average 2.342857142857143) internal successors, (82), 29 states have internal predecessors, (82), 8 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2022-01-10 06:03:16,197 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2022-01-10 06:03:16,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 06:03:16,198 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:03:16,198 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:03:16,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 06:03:16,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:03:16,410 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:03:16,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:03:16,410 INFO L85 PathProgramCache]: Analyzing trace with hash -535060263, now seen corresponding path program 1 times [2022-01-10 06:03:16,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:03:16,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133485535] [2022-01-10 06:03:16,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:03:16,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:03:16,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:03:16,412 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:03:16,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 06:03:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:03:16,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 39 conjunts are in the unsatisfiable core [2022-01-10 06:03:16,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:03:16,766 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-01-10 06:03:16,769 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:03:17,208 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:03:17,444 INFO L353 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-01-10 06:03:17,445 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-01-10 06:03:17,448 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:03:17,463 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:03:17,546 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:03:17,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:03:17,975 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-01-10 06:03:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 29 refuted. 2 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:03:18,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:03:18,462 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1523 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= |c_ULTIMATE.start_main_~b~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_1523) |c_~#pp~0.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) (_ bv1 32))) |c_~#pp~0.offset|))))) is different from false [2022-01-10 06:03:18,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:03:18,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133485535] [2022-01-10 06:03:18,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133485535] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:03:18,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [166923020] [2022-01-10 06:03:18,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:03:18,464 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-01-10 06:03:18,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-01-10 06:03:18,465 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-01-10 06:03:18,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-01-10 06:03:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:03:18,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-10 06:03:18,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:03:19,062 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-01-10 06:03:19,065 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:03:19,805 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:03:20,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:03:20,127 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-01-10 06:03:20,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:03:20,146 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:03:20,259 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-10 06:03:20,469 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-10 06:03:20,829 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2022-01-10 06:03:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 29 refuted. 2 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:03:20,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:03:20,897 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1587 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_1587) |c_~#pp~0.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) (_ bv1 32))) |c_~#pp~0.offset|)) |c_ULTIMATE.start_main_~b~0#1.offset|))) is different from false [2022-01-10 06:03:20,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [166923020] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:03:20,899 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:03:20,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2022-01-10 06:03:20,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253754387] [2022-01-10 06:03:20,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:03:20,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-10 06:03:20,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:03:20,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-10 06:03:20,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1687, Unknown=80, NotChecked=170, Total=2070 [2022-01-10 06:03:20,901 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 39 states, 37 states have (on average 2.2432432432432434) internal successors, (83), 30 states have internal predecessors, (83), 8 states have call successors, (12), 6 states have call predecessors, (12), 10 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2022-01-10 06:03:23,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:03:23,592 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2022-01-10 06:03:23,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 06:03:23,593 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 37 states have (on average 2.2432432432432434) internal successors, (83), 30 states have internal predecessors, (83), 8 states have call successors, (12), 6 states have call predecessors, (12), 10 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) Word has length 58 [2022-01-10 06:03:23,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:03:23,593 INFO L225 Difference]: With dead ends: 60 [2022-01-10 06:03:23,593 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 06:03:23,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=242, Invalid=2832, Unknown=126, NotChecked=222, Total=3422 [2022-01-10 06:03:23,594 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 57 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 227 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 06:03:23,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 128 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 633 Invalid, 0 Unknown, 227 Unchecked, 1.8s Time] [2022-01-10 06:03:23,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 06:03:23,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 06:03:23,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:03:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 06:03:23,595 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2022-01-10 06:03:23,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:03:23,595 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 06:03:23,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 37 states have (on average 2.2432432432432434) internal successors, (83), 30 states have internal predecessors, (83), 8 states have call successors, (12), 6 states have call predecessors, (12), 10 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2022-01-10 06:03:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 06:03:23,596 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 06:03:23,598 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 06:03:23,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0