./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array27_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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-patterns/array27_pattern.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 8e2a4cc1bd1815c470836bbbcc9d3775eac69b651b7231d974ae63a065851dd1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 20:23:41,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 20:23:41,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 20:23:41,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 20:23:41,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 20:23:41,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 20:23:41,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 20:23:41,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 20:23:41,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 20:23:41,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 20:23:41,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 20:23:41,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 20:23:41,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 20:23:41,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 20:23:41,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 20:23:41,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 20:23:41,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 20:23:41,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 20:23:41,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 20:23:41,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 20:23:41,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 20:23:41,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 20:23:41,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 20:23:41,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 20:23:41,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 20:23:41,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 20:23:41,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 20:23:41,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 20:23:41,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 20:23:41,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 20:23:41,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 20:23:41,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 20:23:41,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 20:23:41,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 20:23:41,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 20:23:41,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 20:23:41,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 20:23:41,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 20:23:41,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 20:23:41,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 20:23:41,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 20:23:41,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 20:23:41,143 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 20:23:41,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 20:23:41,144 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 20:23:41,144 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 20:23:41,145 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 20:23:41,145 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 20:23:41,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 20:23:41,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 20:23:41,146 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 20:23:41,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 20:23:41,147 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 20:23:41,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 20:23:41,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 20:23:41,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 20:23:41,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 20:23:41,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 20:23:41,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 20:23:41,148 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 20:23:41,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 20:23:41,149 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 20:23:41,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 20:23:41,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 20:23:41,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 20:23:41,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 20:23:41,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 20:23:41,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 20:23:41,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 20:23:41,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 20:23:41,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 20:23:41,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 20:23:41,151 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 20:23:41,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 20:23:41,151 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 20:23:41,152 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 20:23:41,152 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 20:23:41,152 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e2a4cc1bd1815c470836bbbcc9d3775eac69b651b7231d974ae63a065851dd1 [2023-02-17 20:23:41,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 20:23:41,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 20:23:41,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 20:23:41,385 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 20:23:41,385 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 20:23:41,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array27_pattern.c [2023-02-17 20:23:42,529 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 20:23:42,682 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 20:23:42,683 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array27_pattern.c [2023-02-17 20:23:42,688 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb35f0c35/3216876f7e614604ab9d84cc098123b6/FLAGb51f08f74 [2023-02-17 20:23:42,700 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb35f0c35/3216876f7e614604ab9d84cc098123b6 [2023-02-17 20:23:42,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 20:23:42,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 20:23:42,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 20:23:42,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 20:23:42,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 20:23:42,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 08:23:42" (1/1) ... [2023-02-17 20:23:42,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68512563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:23:42, skipping insertion in model container [2023-02-17 20:23:42,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 08:23:42" (1/1) ... [2023-02-17 20:23:42,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 20:23:42,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 20:23:42,835 WARN L237 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-patterns/array27_pattern.c[1253,1266] [2023-02-17 20:23:42,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 20:23:42,855 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 20:23:42,865 WARN L237 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-patterns/array27_pattern.c[1253,1266] [2023-02-17 20:23:42,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 20:23:42,883 INFO L208 MainTranslator]: Completed translation [2023-02-17 20:23:42,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:23:42 WrapperNode [2023-02-17 20:23:42,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 20:23:42,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 20:23:42,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 20:23:42,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 20:23:42,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:23:42" (1/1) ... [2023-02-17 20:23:42,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:23:42" (1/1) ... [2023-02-17 20:23:42,912 INFO L138 Inliner]: procedures = 16, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-02-17 20:23:42,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 20:23:42,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 20:23:42,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 20:23:42,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 20:23:42,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:23:42" (1/1) ... [2023-02-17 20:23:42,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:23:42" (1/1) ... [2023-02-17 20:23:42,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:23:42" (1/1) ... [2023-02-17 20:23:42,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:23:42" (1/1) ... [2023-02-17 20:23:42,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:23:42" (1/1) ... [2023-02-17 20:23:42,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:23:42" (1/1) ... [2023-02-17 20:23:42,931 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:23:42" (1/1) ... [2023-02-17 20:23:42,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:23:42" (1/1) ... [2023-02-17 20:23:42,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 20:23:42,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 20:23:42,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 20:23:42,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 20:23:42,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:23:42" (1/1) ... [2023-02-17 20:23:42,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 20:23:42,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:23:42,962 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) [2023-02-17 20:23:42,965 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 [2023-02-17 20:23:42,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 20:23:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 20:23:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 20:23:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 20:23:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 20:23:42,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 20:23:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 20:23:42,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 20:23:43,061 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 20:23:43,066 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 20:23:43,175 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 20:23:43,180 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 20:23:43,181 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-17 20:23:43,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 08:23:43 BoogieIcfgContainer [2023-02-17 20:23:43,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 20:23:43,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 20:23:43,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 20:23:43,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 20:23:43,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 08:23:42" (1/3) ... [2023-02-17 20:23:43,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fcc3dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 08:23:43, skipping insertion in model container [2023-02-17 20:23:43,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:23:42" (2/3) ... [2023-02-17 20:23:43,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fcc3dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 08:23:43, skipping insertion in model container [2023-02-17 20:23:43,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 08:23:43" (3/3) ... [2023-02-17 20:23:43,206 INFO L112 eAbstractionObserver]: Analyzing ICFG array27_pattern.c [2023-02-17 20:23:43,221 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 20:23:43,221 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 20:23:43,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 20:23:43,267 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7dac3f29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 20:23:43,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 20:23:43,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.6) internal successors, (32), 21 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) [2023-02-17 20:23:43,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 20:23:43,276 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:23:43,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:23:43,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:23:43,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:23:43,282 INFO L85 PathProgramCache]: Analyzing trace with hash -468356531, now seen corresponding path program 1 times [2023-02-17 20:23:43,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:23:43,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586353241] [2023-02-17 20:23:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:23:43,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:23:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:23:43,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:23:43,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586353241] [2023-02-17 20:23:43,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-17 20:23:43,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247827447] [2023-02-17 20:23:43,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:23:43,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:23:43,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:23:43,389 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) [2023-02-17 20:23:43,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 20:23:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:23:43,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 20:23:43,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:23:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:23:43,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 20:23:43,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247827447] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 20:23:43,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 20:23:43,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 20:23:43,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315434771] [2023-02-17 20:23:43,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 20:23:43,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 20:23:43,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:23:43,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 20:23:43,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 20:23:43,536 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.6) internal successors, (32), 21 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 20:23:43,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:23:43,568 INFO L93 Difference]: Finished difference Result 41 states and 60 transitions. [2023-02-17 20:23:43,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 20:23:43,570 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-17 20:23:43,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:23:43,585 INFO L225 Difference]: With dead ends: 41 [2023-02-17 20:23:43,585 INFO L226 Difference]: Without dead ends: 18 [2023-02-17 20:23:43,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 20:23:43,602 INFO L413 NwaCegarLoop]: 26 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, 26 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 [2023-02-17 20:23:43,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 20:23:43,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-02-17 20:23:43,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-02-17 20:23:43,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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) [2023-02-17 20:23:43,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-02-17 20:23:43,658 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2023-02-17 20:23:43,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:23:43,658 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-02-17 20:23:43,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 20:23:43,659 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-02-17 20:23:43,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 20:23:43,660 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:23:43,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:23:43,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-17 20:23:43,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-17 20:23:43,867 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:23:43,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:23:43,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1936709868, now seen corresponding path program 1 times [2023-02-17 20:23:43,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:23:43,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890564056] [2023-02-17 20:23:43,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:23:43,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:23:43,888 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:23:43,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [794827048] [2023-02-17 20:23:43,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:23:43,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:23:43,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:23:43,900 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) [2023-02-17 20:23:43,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 20:23:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:23:43,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 20:23:43,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:23:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:23:44,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 20:23:44,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:23:44,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890564056] [2023-02-17 20:23:44,039 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:23:44,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794827048] [2023-02-17 20:23:44,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794827048] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 20:23:44,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 20:23:44,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 20:23:44,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584963836] [2023-02-17 20:23:44,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 20:23:44,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 20:23:44,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:23:44,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 20:23:44,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 20:23:44,042 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 20:23:44,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:23:44,111 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2023-02-17 20:23:44,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 20:23:44,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-17 20:23:44,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:23:44,112 INFO L225 Difference]: With dead ends: 36 [2023-02-17 20:23:44,112 INFO L226 Difference]: Without dead ends: 27 [2023-02-17 20:23:44,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-17 20:23:44,114 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 20:23:44,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 11 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 20:23:44,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-17 20:23:44,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2023-02-17 20:23:44,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 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) [2023-02-17 20:23:44,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-02-17 20:23:44,120 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 10 [2023-02-17 20:23:44,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:23:44,121 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-02-17 20:23:44,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 20:23:44,121 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-02-17 20:23:44,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 20:23:44,122 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:23:44,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:23:44,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 20:23:44,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-17 20:23:44,328 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:23:44,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:23:44,329 INFO L85 PathProgramCache]: Analyzing trace with hash 129650620, now seen corresponding path program 1 times [2023-02-17 20:23:44,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:23:44,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568114962] [2023-02-17 20:23:44,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:23:44,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:23:44,354 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:23:44,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092834635] [2023-02-17 20:23:44,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:23:44,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:23:44,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:23:44,360 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) [2023-02-17 20:23:44,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 20:23:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:23:44,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 20:23:44,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:23:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 20:23:44,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 20:23:44,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:23:44,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568114962] [2023-02-17 20:23:44,434 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:23:44,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092834635] [2023-02-17 20:23:44,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092834635] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 20:23:44,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 20:23:44,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 20:23:44,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008572530] [2023-02-17 20:23:44,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 20:23:44,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 20:23:44,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:23:44,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 20:23:44,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 20:23:44,437 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-02-17 20:23:44,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:23:44,488 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2023-02-17 20:23:44,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 20:23:44,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2023-02-17 20:23:44,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:23:44,490 INFO L225 Difference]: With dead ends: 40 [2023-02-17 20:23:44,490 INFO L226 Difference]: Without dead ends: 25 [2023-02-17 20:23:44,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 20:23:44,491 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 25 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 20:23:44,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 16 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 20:23:44,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-17 20:23:44,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2023-02-17 20:23:44,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 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) [2023-02-17 20:23:44,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-02-17 20:23:44,497 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2023-02-17 20:23:44,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:23:44,497 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-02-17 20:23:44,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-02-17 20:23:44,498 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-02-17 20:23:44,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-17 20:23:44,498 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:23:44,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:23:44,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 20:23:44,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:23:44,701 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:23:44,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:23:44,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1705469543, now seen corresponding path program 1 times [2023-02-17 20:23:44,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:23:44,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766522595] [2023-02-17 20:23:44,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:23:44,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:23:44,712 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:23:44,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832254666] [2023-02-17 20:23:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:23:44,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:23:44,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:23:44,717 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) [2023-02-17 20:23:44,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 20:23:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:23:44,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 30 conjunts are in the unsatisfiable core [2023-02-17 20:23:44,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:23:44,821 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 17 [2023-02-17 20:23:44,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 9 [2023-02-17 20:23:44,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:23:44,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 20:23:45,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2023-02-17 20:23:45,070 INFO L350 Elim1Store]: Elim1 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 92 treesize of output 80 [2023-02-17 20:23:45,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:23:45,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:23:45,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766522595] [2023-02-17 20:23:45,131 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:23:45,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832254666] [2023-02-17 20:23:45,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832254666] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 20:23:45,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 20:23:45,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2023-02-17 20:23:45,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411596519] [2023-02-17 20:23:45,132 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 20:23:45,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-17 20:23:45,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:23:45,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-17 20:23:45,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2023-02-17 20:23:45,135 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2023-02-17 20:23:46,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:23:46,264 INFO L93 Difference]: Finished difference Result 97 states and 124 transitions. [2023-02-17 20:23:46,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-17 20:23:46,267 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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 21 [2023-02-17 20:23:46,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:23:46,269 INFO L225 Difference]: With dead ends: 97 [2023-02-17 20:23:46,269 INFO L226 Difference]: Without dead ends: 76 [2023-02-17 20:23:46,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=577, Invalid=1973, Unknown=0, NotChecked=0, Total=2550 [2023-02-17 20:23:46,271 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 291 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-17 20:23:46,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 37 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-17 20:23:46,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-17 20:23:46,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 57. [2023-02-17 20:23:46,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 56 states have internal predecessors, (75), 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) [2023-02-17 20:23:46,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 75 transitions. [2023-02-17 20:23:46,313 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 75 transitions. Word has length 21 [2023-02-17 20:23:46,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:23:46,313 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 75 transitions. [2023-02-17 20:23:46,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2023-02-17 20:23:46,314 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 75 transitions. [2023-02-17 20:23:46,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 20:23:46,315 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:23:46,315 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:23:46,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 20:23:46,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:23:46,521 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:23:46,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:23:46,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1881533531, now seen corresponding path program 2 times [2023-02-17 20:23:46,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:23:46,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666963660] [2023-02-17 20:23:46,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:23:46,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:23:46,542 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:23:46,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1917819769] [2023-02-17 20:23:46,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 20:23:46,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:23:46,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:23:46,549 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) [2023-02-17 20:23:46,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 20:23:46,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 20:23:46,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 20:23:46,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 20:23:46,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:23:46,635 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:23:46,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 20:23:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:23:46,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:23:46,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666963660] [2023-02-17 20:23:46,658 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:23:46,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917819769] [2023-02-17 20:23:46,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917819769] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 20:23:46,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 20:23:46,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-17 20:23:46,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728884208] [2023-02-17 20:23:46,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 20:23:46,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 20:23:46,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:23:46,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 20:23:46,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-17 20:23:46,662 INFO L87 Difference]: Start difference. First operand 57 states and 75 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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) [2023-02-17 20:23:46,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:23:46,774 INFO L93 Difference]: Finished difference Result 165 states and 214 transitions. [2023-02-17 20:23:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 20:23:46,775 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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 23 [2023-02-17 20:23:46,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:23:46,776 INFO L225 Difference]: With dead ends: 165 [2023-02-17 20:23:46,776 INFO L226 Difference]: Without dead ends: 105 [2023-02-17 20:23:46,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-02-17 20:23:46,778 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 72 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 20:23:46,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 49 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 20:23:46,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-02-17 20:23:46,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 79. [2023-02-17 20:23:46,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 78 states have internal predecessors, (100), 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) [2023-02-17 20:23:46,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2023-02-17 20:23:46,805 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 23 [2023-02-17 20:23:46,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:23:46,805 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2023-02-17 20:23:46,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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) [2023-02-17 20:23:46,806 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2023-02-17 20:23:46,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 20:23:46,807 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:23:46,808 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:23:46,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 20:23:47,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:23:47,022 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:23:47,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:23:47,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1482958944, now seen corresponding path program 1 times [2023-02-17 20:23:47,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:23:47,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577411516] [2023-02-17 20:23:47,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:23:47,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:23:47,034 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:23:47,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746546340] [2023-02-17 20:23:47,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:23:47,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:23:47,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:23:47,041 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) [2023-02-17 20:23:47,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 20:23:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:23:47,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 20:23:47,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:23:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 20:23:47,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 20:23:47,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 20:23:47,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:23:47,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577411516] [2023-02-17 20:23:47,128 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:23:47,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746546340] [2023-02-17 20:23:47,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746546340] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 20:23:47,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 20:23:47,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-02-17 20:23:47,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70563210] [2023-02-17 20:23:47,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 20:23:47,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 20:23:47,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:23:47,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 20:23:47,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-02-17 20:23:47,131 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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) [2023-02-17 20:23:47,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:23:47,306 INFO L93 Difference]: Finished difference Result 180 states and 234 transitions. [2023-02-17 20:23:47,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-17 20:23:47,307 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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) Word has length 24 [2023-02-17 20:23:47,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:23:47,308 INFO L225 Difference]: With dead ends: 180 [2023-02-17 20:23:47,308 INFO L226 Difference]: Without dead ends: 112 [2023-02-17 20:23:47,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2023-02-17 20:23:47,309 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 59 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 20:23:47,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 26 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 20:23:47,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-17 20:23:47,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 72. [2023-02-17 20:23:47,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.267605633802817) internal successors, (90), 71 states have internal predecessors, (90), 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) [2023-02-17 20:23:47,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2023-02-17 20:23:47,330 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 24 [2023-02-17 20:23:47,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:23:47,330 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2023-02-17 20:23:47,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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) [2023-02-17 20:23:47,330 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2023-02-17 20:23:47,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 20:23:47,331 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:23:47,331 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:23:47,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 20:23:47,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:23:47,537 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:23:47,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:23:47,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1060244373, now seen corresponding path program 1 times [2023-02-17 20:23:47,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:23:47,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103507072] [2023-02-17 20:23:47,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:23:47,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:23:47,547 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:23:47,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1584765287] [2023-02-17 20:23:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:23:47,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:23:47,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:23:47,553 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) [2023-02-17 20:23:47,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 20:23:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:23:47,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 20:23:47,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:23:47,623 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 20:23:47,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 20:23:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 20:23:47,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:23:47,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103507072] [2023-02-17 20:23:47,662 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:23:47,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584765287] [2023-02-17 20:23:47,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584765287] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 20:23:47,662 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 20:23:47,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-17 20:23:47,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644568642] [2023-02-17 20:23:47,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 20:23:47,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 20:23:47,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:23:47,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 20:23:47,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-17 20:23:47,664 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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) [2023-02-17 20:23:47,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:23:47,786 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2023-02-17 20:23:47,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-17 20:23:47,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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 [2023-02-17 20:23:47,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:23:47,787 INFO L225 Difference]: With dead ends: 102 [2023-02-17 20:23:47,787 INFO L226 Difference]: Without dead ends: 80 [2023-02-17 20:23:47,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-02-17 20:23:47,789 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 49 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 20:23:47,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 36 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 20:23:47,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-17 20:23:47,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 63. [2023-02-17 20:23:47,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 62 states have internal predecessors, (77), 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) [2023-02-17 20:23:47,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2023-02-17 20:23:47,804 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 26 [2023-02-17 20:23:47,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:23:47,805 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2023-02-17 20:23:47,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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) [2023-02-17 20:23:47,805 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2023-02-17 20:23:47,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 20:23:47,806 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:23:47,806 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:23:47,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-17 20:23:48,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:23:48,012 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:23:48,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:23:48,013 INFO L85 PathProgramCache]: Analyzing trace with hash -14420759, now seen corresponding path program 2 times [2023-02-17 20:23:48,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:23:48,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428765229] [2023-02-17 20:23:48,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:23:48,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:23:48,022 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:23:48,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432209846] [2023-02-17 20:23:48,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 20:23:48,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:23:48,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:23:48,037 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) [2023-02-17 20:23:48,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-17 20:23:48,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 20:23:48,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 20:23:48,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 20:23:48,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:23:48,121 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 20:23:48,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 20:23:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 20:23:48,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:23:48,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428765229] [2023-02-17 20:23:48,146 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:23:48,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432209846] [2023-02-17 20:23:48,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432209846] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 20:23:48,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 20:23:48,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-17 20:23:48,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371620848] [2023-02-17 20:23:48,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 20:23:48,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 20:23:48,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:23:48,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 20:23:48,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-17 20:23:48,149 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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) [2023-02-17 20:23:48,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:23:48,227 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2023-02-17 20:23:48,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 20:23:48,228 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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 [2023-02-17 20:23:48,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:23:48,229 INFO L225 Difference]: With dead ends: 76 [2023-02-17 20:23:48,229 INFO L226 Difference]: Without dead ends: 54 [2023-02-17 20:23:48,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-02-17 20:23:48,230 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 46 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 20:23:48,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 32 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 20:23:48,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-17 20:23:48,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2023-02-17 20:23:48,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 44 states have internal predecessors, (54), 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) [2023-02-17 20:23:48,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2023-02-17 20:23:48,241 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 30 [2023-02-17 20:23:48,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:23:48,242 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2023-02-17 20:23:48,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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) [2023-02-17 20:23:48,242 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2023-02-17 20:23:48,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-17 20:23:48,243 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:23:48,243 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:23:48,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-17 20:23:48,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-17 20:23:48,450 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:23:48,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:23:48,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1156561688, now seen corresponding path program 3 times [2023-02-17 20:23:48,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:23:48,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656816954] [2023-02-17 20:23:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:23:48,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:23:48,459 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:23:48,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35910860] [2023-02-17 20:23:48,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 20:23:48,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:23:48,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:23:48,466 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) [2023-02-17 20:23:48,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-17 20:23:48,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-02-17 20:23:48,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 20:23:48,554 WARN L261 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 72 conjunts are in the unsatisfiable core [2023-02-17 20:23:48,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:23:48,571 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 17 [2023-02-17 20:23:48,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:23:48,593 INFO L350 Elim1Store]: Elim1 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 39 treesize of output 38 [2023-02-17 20:23:48,641 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 20:23:48,642 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 56 treesize of output 190 [2023-02-17 20:23:48,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:23:48,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:23:48,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:23:48,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:23:48,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:23:48,730 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 20:23:48,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 215 treesize of output 192 [2023-02-17 20:23:49,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:23:49,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:23:49,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:23:49,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:23:49,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:23:49,176 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 20:23:49,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:23:49,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:23:49,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:23:49,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:23:49,181 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 20:23:49,181 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 20:23:49,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 252 treesize of output 142 [2023-02-17 20:23:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:23:49,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 20:23:51,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 173 [2023-02-17 20:23:51,230 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 20:23:51,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43354866 treesize of output 42502898