./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/sina2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/sina2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1ea1eb4a8af9eb0da04a9f2b25d1b98ecd98ff3b6d87ba0d8e53000f12b8adcc --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 08:53:28,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 08:53:28,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 08:53:28,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 08:53:28,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 08:53:28,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 08:53:28,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 08:53:28,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 08:53:28,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 08:53:28,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 08:53:28,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 08:53:28,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 08:53:28,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 08:53:28,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 08:53:28,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 08:53:28,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 08:53:28,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 08:53:28,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 08:53:28,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 08:53:28,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 08:53:28,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 08:53:28,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 08:53:28,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 08:53:28,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 08:53:28,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 08:53:28,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 08:53:28,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 08:53:28,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 08:53:28,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 08:53:28,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 08:53:28,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 08:53:28,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 08:53:28,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 08:53:28,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 08:53:28,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 08:53:28,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 08:53:28,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 08:53:28,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 08:53:28,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 08:53:28,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 08:53:28,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 08:53:28,850 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 08:53:28,863 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 08:53:28,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 08:53:28,864 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 08:53:28,864 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 08:53:28,865 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 08:53:28,865 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 08:53:28,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 08:53:28,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 08:53:28,866 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 08:53:28,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 08:53:28,866 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 08:53:28,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 08:53:28,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 08:53:28,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 08:53:28,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 08:53:28,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 08:53:28,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 08:53:28,867 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 08:53:28,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 08:53:28,867 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 08:53:28,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 08:53:28,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 08:53:28,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 08:53:28,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 08:53:28,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 08:53:28,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 08:53:28,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 08:53:28,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 08:53:28,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 08:53:28,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 08:53:28,869 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 08:53:28,869 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 08:53:28,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 08:53:28,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 08:53:28,870 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ea1eb4a8af9eb0da04a9f2b25d1b98ecd98ff3b6d87ba0d8e53000f12b8adcc [2021-12-15 08:53:29,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 08:53:29,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 08:53:29,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 08:53:29,064 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 08:53:29,065 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 08:53:29,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/sina2.c [2021-12-15 08:53:29,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78fc0e7b/e03d9273c72143a582c34d269e8728a8/FLAGdfb6162a2 [2021-12-15 08:53:29,516 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 08:53:29,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina2.c [2021-12-15 08:53:29,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78fc0e7b/e03d9273c72143a582c34d269e8728a8/FLAGdfb6162a2 [2021-12-15 08:53:29,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78fc0e7b/e03d9273c72143a582c34d269e8728a8 [2021-12-15 08:53:29,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 08:53:29,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 08:53:29,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 08:53:29,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 08:53:29,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 08:53:29,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:53:29" (1/1) ... [2021-12-15 08:53:29,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dceaee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:53:29, skipping insertion in model container [2021-12-15 08:53:29,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:53:29" (1/1) ... [2021-12-15 08:53:29,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 08:53:29,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 08:53:29,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina2.c[588,601] [2021-12-15 08:53:29,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 08:53:29,685 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 08:53:29,696 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina2.c[588,601] [2021-12-15 08:53:29,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 08:53:29,726 INFO L208 MainTranslator]: Completed translation [2021-12-15 08:53:29,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:53:29 WrapperNode [2021-12-15 08:53:29,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 08:53:29,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 08:53:29,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 08:53:29,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 08:53:29,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:53:29" (1/1) ... [2021-12-15 08:53:29,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:53:29" (1/1) ... [2021-12-15 08:53:29,767 INFO L137 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 84 [2021-12-15 08:53:29,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 08:53:29,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 08:53:29,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 08:53:29,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 08:53:29,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:53:29" (1/1) ... [2021-12-15 08:53:29,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:53:29" (1/1) ... [2021-12-15 08:53:29,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:53:29" (1/1) ... [2021-12-15 08:53:29,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:53:29" (1/1) ... [2021-12-15 08:53:29,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:53:29" (1/1) ... [2021-12-15 08:53:29,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:53:29" (1/1) ... [2021-12-15 08:53:29,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:53:29" (1/1) ... [2021-12-15 08:53:29,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 08:53:29,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 08:53:29,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 08:53:29,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 08:53:29,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:53:29" (1/1) ... [2021-12-15 08:53:29,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 08:53:29,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:53:29,827 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) [2021-12-15 08:53:29,832 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 [2021-12-15 08:53:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 08:53:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 08:53:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 08:53:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 08:53:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 08:53:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 08:53:29,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 08:53:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 08:53:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 08:53:29,929 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 08:53:29,930 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 08:53:30,047 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 08:53:30,052 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 08:53:30,053 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-15 08:53:30,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:53:30 BoogieIcfgContainer [2021-12-15 08:53:30,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 08:53:30,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 08:53:30,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 08:53:30,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 08:53:30,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:53:29" (1/3) ... [2021-12-15 08:53:30,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7afb00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:53:30, skipping insertion in model container [2021-12-15 08:53:30,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:53:29" (2/3) ... [2021-12-15 08:53:30,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7afb00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:53:30, skipping insertion in model container [2021-12-15 08:53:30,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:53:30" (3/3) ... [2021-12-15 08:53:30,072 INFO L111 eAbstractionObserver]: Analyzing ICFG sina2.c [2021-12-15 08:53:30,076 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 08:53:30,077 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 08:53:30,123 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 08:53:30,128 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 [2021-12-15 08:53:30,128 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 08:53:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 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) [2021-12-15 08:53:30,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-15 08:53:30,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:53:30,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:53:30,145 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:53:30,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:53:30,149 INFO L85 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2021-12-15 08:53:30,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:53:30,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479371901] [2021-12-15 08:53:30,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:53:30,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:53:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:53:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:53:30,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:53:30,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479371901] [2021-12-15 08:53:30,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479371901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:53:30,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:53:30,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 08:53:30,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852238670] [2021-12-15 08:53:30,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:53:30,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 08:53:30,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:53:30,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 08:53:30,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 08:53:30,281 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 08:53:30,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:53:30,292 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2021-12-15 08:53:30,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 08:53:30,294 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-15 08:53:30,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:53:30,299 INFO L225 Difference]: With dead ends: 44 [2021-12-15 08:53:30,299 INFO L226 Difference]: Without dead ends: 20 [2021-12-15 08:53:30,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 08:53:30,305 INFO L933 BasicCegarLoop]: 28 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, 28 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 [2021-12-15 08:53:30,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:53:30,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-12-15 08:53:30,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-12-15 08:53:30,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 08:53:30,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-12-15 08:53:30,333 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2021-12-15 08:53:30,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:53:30,334 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-12-15 08:53:30,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 08:53:30,334 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-12-15 08:53:30,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-15 08:53:30,335 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:53:30,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:53:30,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 08:53:30,336 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:53:30,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:53:30,339 INFO L85 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2021-12-15 08:53:30,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:53:30,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814498285] [2021-12-15 08:53:30,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:53:30,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:53:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:53:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:53:30,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:53:30,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814498285] [2021-12-15 08:53:30,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814498285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:53:30,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:53:30,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 08:53:30,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677680885] [2021-12-15 08:53:30,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:53:30,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 08:53:30,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:53:30,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 08:53:30,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 08:53:30,397 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 08:53:30,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:53:30,459 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2021-12-15 08:53:30,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 08:53:30,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-15 08:53:30,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:53:30,461 INFO L225 Difference]: With dead ends: 45 [2021-12-15 08:53:30,462 INFO L226 Difference]: Without dead ends: 32 [2021-12-15 08:53:30,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 08:53:30,463 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 08:53:30,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 16 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 08:53:30,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-15 08:53:30,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2021-12-15 08:53:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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) [2021-12-15 08:53:30,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-12-15 08:53:30,468 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2021-12-15 08:53:30,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:53:30,469 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-12-15 08:53:30,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 08:53:30,469 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-12-15 08:53:30,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 08:53:30,469 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:53:30,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:53:30,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 08:53:30,470 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:53:30,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:53:30,470 INFO L85 PathProgramCache]: Analyzing trace with hash 615941150, now seen corresponding path program 1 times [2021-12-15 08:53:30,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:53:30,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255060125] [2021-12-15 08:53:30,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:53:30,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:53:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:53:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:53:30,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:53:30,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255060125] [2021-12-15 08:53:30,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255060125] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:53:30,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944006160] [2021-12-15 08:53:30,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:53:30,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:30,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:53:30,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:53:30,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 08:53:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:53:30,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-15 08:53:30,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:53:31,010 INFO L388 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 8 [2021-12-15 08:53:31,023 INFO L388 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 08:53:31,049 INFO L388 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 23 treesize of output 22 [2021-12-15 08:53:31,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 36 treesize of output 23 [2021-12-15 08:53:31,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 40 treesize of output 23 [2021-12-15 08:53:31,375 INFO L388 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 43 treesize of output 27 [2021-12-15 08:53:31,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:53:31,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:53:31,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:53:31,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:53:31,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944006160] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:53:31,641 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:53:31,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2021-12-15 08:53:31,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997924838] [2021-12-15 08:53:31,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:53:31,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-15 08:53:31,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:53:31,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-15 08:53:31,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2021-12-15 08:53:31,643 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 08:53:31,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:53:31,818 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2021-12-15 08:53:31,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-15 08:53:31,819 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-15 08:53:31,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:53:31,819 INFO L225 Difference]: With dead ends: 45 [2021-12-15 08:53:31,819 INFO L226 Difference]: Without dead ends: 43 [2021-12-15 08:53:31,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2021-12-15 08:53:31,821 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 08:53:31,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 86 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 210 Invalid, 0 Unknown, 8 Unchecked, 0.1s Time] [2021-12-15 08:53:31,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-15 08:53:31,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2021-12-15 08:53:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 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) [2021-12-15 08:53:31,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2021-12-15 08:53:31,825 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 20 [2021-12-15 08:53:31,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:53:31,825 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2021-12-15 08:53:31,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 08:53:31,826 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2021-12-15 08:53:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-15 08:53:31,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:53:31,826 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:53:31,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 08:53:32,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:32,038 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:53:32,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:53:32,039 INFO L85 PathProgramCache]: Analyzing trace with hash 859342364, now seen corresponding path program 2 times [2021-12-15 08:53:32,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:53:32,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197057601] [2021-12-15 08:53:32,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:53:32,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:53:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:53:32,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 08:53:32,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:53:32,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197057601] [2021-12-15 08:53:32,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197057601] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:53:32,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572354979] [2021-12-15 08:53:32,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 08:53:32,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:32,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:53:32,091 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:53:32,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 08:53:32,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 08:53:32,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:53:32,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-15 08:53:32,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:53:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 08:53:32,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:53:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 08:53:32,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572354979] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:53:32,214 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:53:32,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-15 08:53:32,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992746574] [2021-12-15 08:53:32,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:53:32,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-15 08:53:32,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:53:32,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-15 08:53:32,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-15 08:53:32,216 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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) [2021-12-15 08:53:32,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:53:32,296 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2021-12-15 08:53:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 08:53:32,296 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-15 08:53:32,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:53:32,297 INFO L225 Difference]: With dead ends: 81 [2021-12-15 08:53:32,297 INFO L226 Difference]: Without dead ends: 54 [2021-12-15 08:53:32,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-12-15 08:53:32,298 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 71 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 08:53:32,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 41 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 08:53:32,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-12-15 08:53:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 36. [2021-12-15 08:53:32,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 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) [2021-12-15 08:53:32,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-12-15 08:53:32,302 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 22 [2021-12-15 08:53:32,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:53:32,302 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-12-15 08:53:32,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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) [2021-12-15 08:53:32,303 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-12-15 08:53:32,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-15 08:53:32,303 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:53:32,304 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:53:32,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 08:53:32,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-15 08:53:32,536 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:53:32,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:53:32,536 INFO L85 PathProgramCache]: Analyzing trace with hash 803751580, now seen corresponding path program 3 times [2021-12-15 08:53:32,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:53:32,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493021790] [2021-12-15 08:53:32,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:53:32,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:53:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:53:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 08:53:32,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:53:32,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493021790] [2021-12-15 08:53:32,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493021790] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:53:32,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865491674] [2021-12-15 08:53:32,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-15 08:53:32,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:32,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:53:32,583 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:53:32,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 08:53:32,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-15 08:53:32,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:53:32,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-15 08:53:32,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:53:32,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 08:53:32,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:53:32,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 08:53:32,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865491674] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:53:32,761 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:53:32,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-15 08:53:32,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627237216] [2021-12-15 08:53:32,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:53:32,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-15 08:53:32,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:53:32,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-15 08:53:32,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-15 08:53:32,763 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 08:53:32,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:53:32,884 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-12-15 08:53:32,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 08:53:32,884 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-15 08:53:32,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:53:32,885 INFO L225 Difference]: With dead ends: 52 [2021-12-15 08:53:32,885 INFO L226 Difference]: Without dead ends: 43 [2021-12-15 08:53:32,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-12-15 08:53:32,886 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 86 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 08:53:32,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 43 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 08:53:32,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-15 08:53:32,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 29. [2021-12-15 08:53:32,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 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) [2021-12-15 08:53:32,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2021-12-15 08:53:32,890 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 22 [2021-12-15 08:53:32,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:53:32,890 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2021-12-15 08:53:32,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 08:53:32,890 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2021-12-15 08:53:32,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-15 08:53:32,891 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:53:32,891 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:53:32,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 08:53:33,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:33,111 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:53:33,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:53:33,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1304966232, now seen corresponding path program 4 times [2021-12-15 08:53:33,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:53:33,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674220887] [2021-12-15 08:53:33,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:53:33,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:53:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:53:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:53:33,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:53:33,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674220887] [2021-12-15 08:53:33,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674220887] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:53:33,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451502216] [2021-12-15 08:53:33,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-15 08:53:33,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:33,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:53:33,946 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:53:33,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 08:53:33,991 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-15 08:53:33,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:53:33,993 WARN L261 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 51 conjunts are in the unsatisfiable core [2021-12-15 08:53:33,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:53:34,011 INFO L388 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 11 treesize of output 7 [2021-12-15 08:53:34,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:34,043 INFO L388 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 23 treesize of output 22 [2021-12-15 08:53:34,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:34,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:34,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-12-15 08:53:34,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:34,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:53:34,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:34,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2021-12-15 08:53:34,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:34,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:34,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2021-12-15 08:53:34,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:34,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:53:34,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:34,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 39 [2021-12-15 08:53:34,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:34,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:34,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:34,696 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-12-15 08:53:34,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 52 [2021-12-15 08:53:34,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:34,854 INFO L388 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 49 treesize of output 29 [2021-12-15 08:53:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:53:34,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:53:37,025 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_57| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_57| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_161 Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_57| 8)) v_ArrVal_161) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ c_~N~0 1))))) is different from false [2021-12-15 08:53:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-15 08:53:46,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451502216] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:53:46,284 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:53:46,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 18] total 52 [2021-12-15 08:53:46,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008214311] [2021-12-15 08:53:46,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:53:46,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-15 08:53:46,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:53:46,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-15 08:53:46,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=2290, Unknown=8, NotChecked=98, Total=2652 [2021-12-15 08:53:46,289 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 52 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 52 states have internal predecessors, (67), 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) [2021-12-15 08:53:48,607 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse5 (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse10 (select .cse9 0))) (let ((.cse1 (+ c_~N~0 .cse10)) (.cse2 (= .cse10 1)) (.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse4 (not (= 8 .cse5))) (.cse7 (select .cse9 (+ (* |c_ULTIMATE.start_main_~i~0#1| 8) |c_ULTIMATE.start_main_~a~0#1.offset|))) (.cse6 (+ c_~N~0 1))) (and (or (let ((.cse0 (+ .cse3 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) .cse2)) .cse4) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (or (< 7 .cse5) (<= 2 c_~N~0)) (<= .cse6 .cse7) (= |c_ULTIMATE.start_main_~i~0#1| 0) (or (let ((.cse8 (+ .cse3 2))) (and (<= .cse8 .cse1) (<= .cse1 .cse8) .cse2 (= .cse7 1))) .cse4) (< 1 c_~N~0) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (and (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|) (= (+ (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) 1) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 8) |c_ULTIMATE.start_main_~a~0#1.offset|))))) (= (select .cse9 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1) (= .cse7 3) (<= .cse7 .cse6) (<= c_~N~0 2) (forall ((|v_ULTIMATE.start_main_~i~0#1_57| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_57| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_161 Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_57| 8)) v_ArrVal_161) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ c_~N~0 1))))) (<= .cse5 8) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)))))) is different from false [2021-12-15 08:53:50,663 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse2 (+ c_~N~0 1)) (.cse1 (select .cse0 0))) (and (= (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) 3) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (and (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|) (= (+ (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) 1) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (< 1 c_~N~0) (<= .cse1 .cse2) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (<= .cse2 .cse1) (<= c_~N~0 2) (forall ((|v_ULTIMATE.start_main_~i~0#1_57| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_57| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_161 Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_57| 8)) v_ArrVal_161) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ c_~N~0 1))))) (<= 1 |c_ULTIMATE.start_main_~i~0#1|) (<= (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) 8)))) is different from false [2021-12-15 08:53:50,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:53:50,765 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2021-12-15 08:53:50,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-15 08:53:50,765 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 52 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-15 08:53:50,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:53:50,766 INFO L225 Difference]: With dead ends: 58 [2021-12-15 08:53:50,766 INFO L226 Difference]: Without dead ends: 56 [2021-12-15 08:53:50,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=325, Invalid=2983, Unknown=10, NotChecked=342, Total=3660 [2021-12-15 08:53:50,769 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 305 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 08:53:50,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 144 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 299 Invalid, 0 Unknown, 305 Unchecked, 0.2s Time] [2021-12-15 08:53:50,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-15 08:53:50,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2021-12-15 08:53:50,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 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) [2021-12-15 08:53:50,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-12-15 08:53:50,773 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 26 [2021-12-15 08:53:50,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:53:50,773 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-12-15 08:53:50,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 52 states have internal predecessors, (67), 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) [2021-12-15 08:53:50,773 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-12-15 08:53:50,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-15 08:53:50,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:53:50,774 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:53:50,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-15 08:53:50,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:50,990 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:53:50,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:53:50,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1135931414, now seen corresponding path program 5 times [2021-12-15 08:53:50,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:53:50,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894222627] [2021-12-15 08:53:50,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:53:50,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:53:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:53:51,058 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-15 08:53:51,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:53:51,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894222627] [2021-12-15 08:53:51,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894222627] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:53:51,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398413864] [2021-12-15 08:53:51,059 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-15 08:53:51,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:51,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:53:51,060 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:53:51,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-15 08:53:51,142 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-15 08:53:51,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:53:51,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 08:53:51,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:53:51,234 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-15 08:53:51,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:53:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-15 08:53:51,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398413864] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:53:51,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:53:51,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-12-15 08:53:51,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104705494] [2021-12-15 08:53:51,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:53:51,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-15 08:53:51,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:53:51,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-15 08:53:51,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-15 08:53:51,287 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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) [2021-12-15 08:53:51,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:53:51,411 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2021-12-15 08:53:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 08:53:51,412 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-15 08:53:51,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:53:51,412 INFO L225 Difference]: With dead ends: 112 [2021-12-15 08:53:51,412 INFO L226 Difference]: Without dead ends: 89 [2021-12-15 08:53:51,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-12-15 08:53:51,413 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 66 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 08:53:51,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 72 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 08:53:51,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-15 08:53:51,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 63. [2021-12-15 08:53:51,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1290322580645162) internal successors, (70), 62 states have internal predecessors, (70), 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) [2021-12-15 08:53:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2021-12-15 08:53:51,446 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 28 [2021-12-15 08:53:51,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:53:51,446 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2021-12-15 08:53:51,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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) [2021-12-15 08:53:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2021-12-15 08:53:51,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-15 08:53:51,450 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:53:51,451 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:53:51,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-15 08:53:51,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:51,660 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:53:51,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:53:51,661 INFO L85 PathProgramCache]: Analyzing trace with hash -227434410, now seen corresponding path program 6 times [2021-12-15 08:53:51,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:53:51,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8432297] [2021-12-15 08:53:51,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:53:51,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:53:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:53:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-15 08:53:51,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:53:51,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8432297] [2021-12-15 08:53:51,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8432297] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:53:51,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609153254] [2021-12-15 08:53:51,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-15 08:53:51,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:51,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:53:51,719 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:53:51,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-15 08:53:51,788 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-12-15 08:53:51,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:53:51,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 08:53:51,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:53:51,872 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-15 08:53:51,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:53:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-15 08:53:51,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609153254] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:53:51,923 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:53:51,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-12-15 08:53:51,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295578648] [2021-12-15 08:53:51,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:53:51,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-15 08:53:51,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:53:51,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-15 08:53:51,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-15 08:53:51,924 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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) [2021-12-15 08:53:52,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:53:52,069 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2021-12-15 08:53:52,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-15 08:53:52,070 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-15 08:53:52,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:53:52,071 INFO L225 Difference]: With dead ends: 91 [2021-12-15 08:53:52,071 INFO L226 Difference]: Without dead ends: 76 [2021-12-15 08:53:52,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-12-15 08:53:52,071 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 108 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 08:53:52,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 105 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 08:53:52,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-12-15 08:53:52,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 54. [2021-12-15 08:53:52,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 53 states have internal predecessors, (58), 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) [2021-12-15 08:53:52,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-12-15 08:53:52,075 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 28 [2021-12-15 08:53:52,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:53:52,076 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-12-15 08:53:52,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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) [2021-12-15 08:53:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-12-15 08:53:52,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-15 08:53:52,076 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:53:52,076 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] [2021-12-15 08:53:52,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-15 08:53:52,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:52,287 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:53:52,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:53:52,288 INFO L85 PathProgramCache]: Analyzing trace with hash 341343694, now seen corresponding path program 1 times [2021-12-15 08:53:52,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:53:52,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195924223] [2021-12-15 08:53:52,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:53:52,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:53:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:53:53,101 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:53:53,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:53:53,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195924223] [2021-12-15 08:53:53,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195924223] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:53:53,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579469554] [2021-12-15 08:53:53,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:53:53,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:53,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:53:53,116 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:53:53,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-15 08:53:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:53:53,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-15 08:53:53,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:53:53,175 INFO L388 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 11 treesize of output 7 [2021-12-15 08:53:53,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:53,224 INFO L388 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 23 treesize of output 22 [2021-12-15 08:53:53,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:53,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:53,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-12-15 08:53:53,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:53,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:53:53,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:53,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2021-12-15 08:53:53,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:53,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:53,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2021-12-15 08:53:53,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:53,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:53,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:53:53,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-12-15 08:53:53,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:53,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 42 treesize of output 25 [2021-12-15 08:53:54,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:54,033 INFO L388 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 43 treesize of output 27 [2021-12-15 08:53:54,067 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:53:54,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:53:55,586 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:53:55,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579469554] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:53:55,587 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:53:55,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 19] total 56 [2021-12-15 08:53:55,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689082346] [2021-12-15 08:53:55,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:53:55,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-12-15 08:53:55,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:53:55,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-12-15 08:53:55,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2806, Unknown=0, NotChecked=0, Total=3080 [2021-12-15 08:53:55,589 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 56 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 56 states have internal predecessors, (79), 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) [2021-12-15 08:53:56,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:53:56,254 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2021-12-15 08:53:56,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-15 08:53:56,255 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 56 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-15 08:53:56,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:53:56,255 INFO L225 Difference]: With dead ends: 57 [2021-12-15 08:53:56,255 INFO L226 Difference]: Without dead ends: 36 [2021-12-15 08:53:56,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=370, Invalid=3920, Unknown=0, NotChecked=0, Total=4290 [2021-12-15 08:53:56,257 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 259 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 08:53:56,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 172 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 376 Invalid, 0 Unknown, 259 Unchecked, 0.2s Time] [2021-12-15 08:53:56,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-15 08:53:56,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-12-15 08:53:56,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 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) [2021-12-15 08:53:56,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-12-15 08:53:56,260 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 30 [2021-12-15 08:53:56,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:53:56,260 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-12-15 08:53:56,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 56 states have internal predecessors, (79), 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) [2021-12-15 08:53:56,260 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-12-15 08:53:56,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-15 08:53:56,261 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:53:56,261 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:53:56,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-15 08:53:56,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:56,461 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:53:56,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:53:56,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1505554158, now seen corresponding path program 7 times [2021-12-15 08:53:56,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:53:56,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851297762] [2021-12-15 08:53:56,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:53:56,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:53:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:53:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:53:57,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:53:57,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851297762] [2021-12-15 08:53:57,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851297762] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:53:57,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704962828] [2021-12-15 08:53:57,369 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-15 08:53:57,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:57,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:53:57,370 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:53:57,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-15 08:53:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:53:57,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 71 conjunts are in the unsatisfiable core [2021-12-15 08:53:57,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:53:57,477 INFO L388 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 8 [2021-12-15 08:53:57,480 INFO L388 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 08:53:57,491 INFO L388 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 23 treesize of output 22 [2021-12-15 08:53:57,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:57,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-12-15 08:53:57,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:57,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:57,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-12-15 08:53:57,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:57,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:57,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:57,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:57,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:53:57,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 52 [2021-12-15 08:53:57,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:57,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:57,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:53:57,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:57,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 57 [2021-12-15 08:53:57,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:57,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:57,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:57,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:53:57,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:57,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 52 [2021-12-15 08:53:58,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:58,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:53:58,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:58,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:58,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 56 [2021-12-15 08:53:58,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:58,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:58,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:58,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:58,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:58,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:53:58,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 59 [2021-12-15 08:53:58,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:58,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:58,446 INFO L354 Elim1Store]: treesize reduction 30, result has 42.3 percent of original size [2021-12-15 08:53:58,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 61 [2021-12-15 08:53:58,595 INFO L388 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 43 treesize of output 27 [2021-12-15 08:53:58,624 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:53:58,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:54:00,745 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_120| Int)) (or (forall ((v_ArrVal_370 Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_120| 8)) v_ArrVal_370) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ c_~N~0 1))) (< |v_ULTIMATE.start_main_~i~0#1_120| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-12-15 08:54:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-15 08:54:27,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704962828] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:54:27,904 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:54:27,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 60 [2021-12-15 08:54:27,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644477464] [2021-12-15 08:54:27,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:54:27,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-12-15 08:54:27,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:54:27,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-12-15 08:54:27,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=3064, Unknown=58, NotChecked=114, Total=3540 [2021-12-15 08:54:27,906 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 60 states, 60 states have (on average 1.3) internal successors, (78), 60 states have internal predecessors, (78), 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) [2021-12-15 08:54:30,303 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse1 (+ c_~N~0 1)) (.cse0 (select .cse2 0)) (.cse3 (select .cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* c_~N~0 8) (- 8))))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_120| Int)) (or (forall ((v_ArrVal_370 Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_120| 8)) v_ArrVal_370) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ c_~N~0 1))) (< |v_ULTIMATE.start_main_~i~0#1_120| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (<= .cse0 .cse1) (= (select .cse2 (+ (* |c_ULTIMATE.start_main_~i~0#1| 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 8))) (+ .cse3 3)) (<= .cse1 .cse0) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= .cse3 1) (<= c_~N~0 3) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (and (= (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* c_~N~0 8) (- 8))) 2)) (not (= |ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)))) (<= 3 c_~N~0) (<= 1 |c_ULTIMATE.start_main_~i~0#1|) (<= (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) 8) (= |c_ULTIMATE.start_main_~i~0#1| 1) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|))))) is different from false [2021-12-15 08:54:32,372 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_120| Int)) (or (forall ((v_ArrVal_370 Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_120| 8)) v_ArrVal_370) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ c_~N~0 1))) (< |v_ULTIMATE.start_main_~i~0#1_120| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (and (= (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) 3) (not (= |ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (<= 3 c_~N~0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 4) (forall ((v_ArrVal_367 Int) (|v_ULTIMATE.start_main_~i~0#1_120| Int) (v_ArrVal_370 Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_120| (+ |c_ULTIMATE.start_main_~i~0#1| 2)) (= (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 8) |c_ULTIMATE.start_main_~a~0#1.offset| 8) v_ArrVal_367) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_120| 8)) v_ArrVal_370) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ c_~N~0 1)))) (<= c_~N~0 3)) is different from false [2021-12-15 08:54:34,468 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_120| Int)) (or (forall ((v_ArrVal_370 Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_120| 8)) v_ArrVal_370) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ c_~N~0 1))) (< |v_ULTIMATE.start_main_~i~0#1_120| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (forall ((v_ArrVal_367 Int) (|v_ULTIMATE.start_main_~i~0#1_120| Int) (v_ArrVal_370 Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_120| (+ |c_ULTIMATE.start_main_~i~0#1| 2)) (= (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 8) |c_ULTIMATE.start_main_~a~0#1.offset| 8) v_ArrVal_367) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_120| 8)) v_ArrVal_370) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ c_~N~0 1))))) is different from false [2021-12-15 08:54:34,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:54:34,529 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2021-12-15 08:54:34,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-15 08:54:34,530 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.3) internal successors, (78), 60 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-15 08:54:34,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:54:34,530 INFO L225 Difference]: With dead ends: 67 [2021-12-15 08:54:34,530 INFO L226 Difference]: Without dead ends: 65 [2021-12-15 08:54:34,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 68 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1563 ImplicationChecksByTransitivity, 36.3s TimeCoverageRelationStatistics Valid=397, Invalid=3848, Unknown=61, NotChecked=524, Total=4830 [2021-12-15 08:54:34,532 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 459 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 08:54:34,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 183 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 291 Invalid, 0 Unknown, 459 Unchecked, 0.2s Time] [2021-12-15 08:54:34,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-15 08:54:34,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2021-12-15 08:54:34,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 states have internal predecessors, (62), 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) [2021-12-15 08:54:34,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2021-12-15 08:54:34,535 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 32 [2021-12-15 08:54:34,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:54:34,535 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2021-12-15 08:54:34,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.3) internal successors, (78), 60 states have internal predecessors, (78), 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) [2021-12-15 08:54:34,535 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2021-12-15 08:54:34,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-15 08:54:34,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:54:34,536 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:54:34,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-15 08:54:34,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-15 08:54:34,739 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:54:34,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:54:34,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2062841424, now seen corresponding path program 8 times [2021-12-15 08:54:34,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:54:34,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326314536] [2021-12-15 08:54:34,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:54:34,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:54:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:54:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-15 08:54:34,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:54:34,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326314536] [2021-12-15 08:54:34,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326314536] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:54:34,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608392745] [2021-12-15 08:54:34,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 08:54:34,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:54:34,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:54:34,837 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:54:34,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-15 08:54:34,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 08:54:34,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:54:34,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-15 08:54:34,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:54:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-15 08:54:35,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:54:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-15 08:54:35,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608392745] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:54:35,060 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:54:35,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2021-12-15 08:54:35,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656692148] [2021-12-15 08:54:35,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:54:35,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-15 08:54:35,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:54:35,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-15 08:54:35,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-12-15 08:54:35,069 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 08:54:35,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:54:35,214 INFO L93 Difference]: Finished difference Result 138 states and 150 transitions. [2021-12-15 08:54:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-15 08:54:35,215 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-15 08:54:35,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:54:35,215 INFO L225 Difference]: With dead ends: 138 [2021-12-15 08:54:35,215 INFO L226 Difference]: Without dead ends: 113 [2021-12-15 08:54:35,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-12-15 08:54:35,216 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 148 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 08:54:35,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 94 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 08:54:35,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-12-15 08:54:35,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 79. [2021-12-15 08:54:35,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.1153846153846154) internal successors, (87), 78 states have internal predecessors, (87), 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) [2021-12-15 08:54:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2021-12-15 08:54:35,227 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 34 [2021-12-15 08:54:35,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:54:35,227 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2021-12-15 08:54:35,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 08:54:35,228 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2021-12-15 08:54:35,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-15 08:54:35,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:54:35,228 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:54:35,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-15 08:54:35,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:54:35,439 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:54:35,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:54:35,439 INFO L85 PathProgramCache]: Analyzing trace with hash 526321296, now seen corresponding path program 9 times [2021-12-15 08:54:35,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:54:35,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231266792] [2021-12-15 08:54:35,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:54:35,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:54:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:54:35,515 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-15 08:54:35,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:54:35,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231266792] [2021-12-15 08:54:35,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231266792] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:54:35,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048539026] [2021-12-15 08:54:35,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-15 08:54:35,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:54:35,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:54:35,532 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:54:35,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-15 08:54:35,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-15 08:54:35,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:54:35,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-15 08:54:35,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:54:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-15 08:54:35,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:54:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-15 08:54:35,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048539026] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:54:35,815 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:54:35,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2021-12-15 08:54:35,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679369513] [2021-12-15 08:54:35,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:54:35,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-15 08:54:35,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:54:35,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-15 08:54:35,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-12-15 08:54:35,816 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 08:54:35,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:54:35,999 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2021-12-15 08:54:36,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 08:54:36,000 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-15 08:54:36,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:54:36,001 INFO L225 Difference]: With dead ends: 119 [2021-12-15 08:54:36,001 INFO L226 Difference]: Without dead ends: 98 [2021-12-15 08:54:36,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-12-15 08:54:36,001 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 179 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 08:54:36,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 135 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 08:54:36,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-15 08:54:36,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 68. [2021-12-15 08:54:36,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0895522388059702) internal successors, (73), 67 states have internal predecessors, (73), 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) [2021-12-15 08:54:36,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2021-12-15 08:54:36,005 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 34 [2021-12-15 08:54:36,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:54:36,006 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2021-12-15 08:54:36,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 08:54:36,006 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2021-12-15 08:54:36,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-15 08:54:36,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:54:36,007 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:54:36,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-15 08:54:36,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-15 08:54:36,207 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:54:36,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:54:36,208 INFO L85 PathProgramCache]: Analyzing trace with hash -968725112, now seen corresponding path program 2 times [2021-12-15 08:54:36,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:54:36,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73725980] [2021-12-15 08:54:36,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:54:36,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:54:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:54:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:54:37,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:54:37,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73725980] [2021-12-15 08:54:37,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73725980] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:54:37,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126918542] [2021-12-15 08:54:37,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 08:54:37,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:54:37,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:54:37,034 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:54:37,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-15 08:54:37,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 08:54:37,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:54:37,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-15 08:54:37,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:54:37,101 INFO L388 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 8 [2021-12-15 08:54:37,125 INFO L388 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-15 08:54:37,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:54:37,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-12-15 08:54:37,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:54:37,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:54:37,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:54:37,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-15 08:54:37,320 INFO L388 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 23 treesize of output 23 [2021-12-15 08:54:37,337 INFO L388 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 23 treesize of output 23 [2021-12-15 08:54:37,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:54:37,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-12-15 08:54:37,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:54:37,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:54:37,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2021-12-15 08:54:37,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:54:37,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:54:37,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:54:37,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 36 [2021-12-15 08:54:37,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:54:37,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:54:37,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:54:37,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 45 [2021-12-15 08:54:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-15 08:54:37,914 INFO L328 TraceCheckSpWp]: Computing backward predicates...