./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ssina.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/ssina.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 4c9ca6c94ff0fae82185b19014fc033eef7a37c04f3b092e10c4eebb38e41241 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 10:47:30,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 10:47:30,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 10:47:30,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 10:47:30,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 10:47:30,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 10:47:30,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 10:47:30,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 10:47:30,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 10:47:30,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 10:47:30,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 10:47:30,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 10:47:30,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 10:47:30,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 10:47:30,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 10:47:30,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 10:47:30,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 10:47:30,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 10:47:30,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 10:47:30,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 10:47:30,167 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 10:47:30,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 10:47:30,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 10:47:30,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 10:47:30,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 10:47:30,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 10:47:30,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 10:47:30,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 10:47:30,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 10:47:30,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 10:47:30,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 10:47:30,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 10:47:30,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 10:47:30,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 10:47:30,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 10:47:30,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 10:47:30,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 10:47:30,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 10:47:30,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 10:47:30,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 10:47:30,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 10:47:30,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 10:47:30,193 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 10:47:30,213 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 10:47:30,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 10:47:30,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 10:47:30,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 10:47:30,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 10:47:30,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 10:47:30,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 10:47:30,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 10:47:30,214 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 10:47:30,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 10:47:30,215 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 10:47:30,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 10:47:30,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 10:47:30,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 10:47:30,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 10:47:30,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 10:47:30,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 10:47:30,220 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 10:47:30,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 10:47:30,222 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 10:47:30,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 10:47:30,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 10:47:30,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 10:47:30,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 10:47:30,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:47:30,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 10:47:30,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 10:47:30,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 10:47:30,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 10:47:30,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 10:47:30,224 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 10:47:30,224 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 10:47:30,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 10:47:30,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c9ca6c94ff0fae82185b19014fc033eef7a37c04f3b092e10c4eebb38e41241 [2022-07-19 10:47:30,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 10:47:30,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 10:47:30,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 10:47:30,530 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 10:47:30,531 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 10:47:30,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ssina.c [2022-07-19 10:47:30,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec484ee9/968fdf9360514b2ca01ac4a28ba42dc5/FLAG5dfe7d096 [2022-07-19 10:47:31,060 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 10:47:31,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ssina.c [2022-07-19 10:47:31,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec484ee9/968fdf9360514b2ca01ac4a28ba42dc5/FLAG5dfe7d096 [2022-07-19 10:47:31,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec484ee9/968fdf9360514b2ca01ac4a28ba42dc5 [2022-07-19 10:47:31,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 10:47:31,466 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 10:47:31,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 10:47:31,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 10:47:31,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 10:47:31,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:47:31" (1/1) ... [2022-07-19 10:47:31,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f843fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:47:31, skipping insertion in model container [2022-07-19 10:47:31,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:47:31" (1/1) ... [2022-07-19 10:47:31,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 10:47:31,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 10:47:31,655 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ssina.c[588,601] [2022-07-19 10:47:31,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:47:31,708 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 10:47:31,722 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ssina.c[588,601] [2022-07-19 10:47:31,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:47:31,766 INFO L208 MainTranslator]: Completed translation [2022-07-19 10:47:31,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:47:31 WrapperNode [2022-07-19 10:47:31,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 10:47:31,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 10:47:31,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 10:47:31,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 10:47:31,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:47:31" (1/1) ... [2022-07-19 10:47:31,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:47:31" (1/1) ... [2022-07-19 10:47:31,817 INFO L137 Inliner]: procedures = 17, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 111 [2022-07-19 10:47:31,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 10:47:31,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 10:47:31,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 10:47:31,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 10:47:31,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:47:31" (1/1) ... [2022-07-19 10:47:31,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:47:31" (1/1) ... [2022-07-19 10:47:31,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:47:31" (1/1) ... [2022-07-19 10:47:31,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:47:31" (1/1) ... [2022-07-19 10:47:31,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:47:31" (1/1) ... [2022-07-19 10:47:31,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:47:31" (1/1) ... [2022-07-19 10:47:31,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:47:31" (1/1) ... [2022-07-19 10:47:31,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 10:47:31,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 10:47:31,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 10:47:31,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 10:47:31,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:47:31" (1/1) ... [2022-07-19 10:47:31,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:47:31,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:47:31,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 10:47:31,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 10:47:31,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 10:47:31,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 10:47:31,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 10:47:31,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 10:47:31,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 10:47:31,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 10:47:31,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 10:47:31,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 10:47:31,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 10:47:32,047 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 10:47:32,049 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 10:47:32,247 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 10:47:32,253 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 10:47:32,253 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-19 10:47:32,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:47:32 BoogieIcfgContainer [2022-07-19 10:47:32,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 10:47:32,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 10:47:32,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 10:47:32,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 10:47:32,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:47:31" (1/3) ... [2022-07-19 10:47:32,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0baccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:47:32, skipping insertion in model container [2022-07-19 10:47:32,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:47:31" (2/3) ... [2022-07-19 10:47:32,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0baccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:47:32, skipping insertion in model container [2022-07-19 10:47:32,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:47:32" (3/3) ... [2022-07-19 10:47:32,263 INFO L111 eAbstractionObserver]: Analyzing ICFG ssina.c [2022-07-19 10:47:32,277 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 10:47:32,277 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 10:47:32,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 10:47:32,326 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@216e8aad, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@b289dd5 [2022-07-19 10:47:32,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 10:47:32,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:32,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-19 10:47:32,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:47:32,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:47:32,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:47:32,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:47:32,343 INFO L85 PathProgramCache]: Analyzing trace with hash -635308358, now seen corresponding path program 1 times [2022-07-19 10:47:32,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:47:32,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83347875] [2022-07-19 10:47:32,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:47:32,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:47:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:47:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:47:32,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:47:32,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83347875] [2022-07-19 10:47:32,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83347875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:47:32,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:47:32,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 10:47:32,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407564531] [2022-07-19 10:47:32,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:47:32,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 10:47:32,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:47:32,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 10:47:32,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 10:47:32,554 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:32,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:47:32,572 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2022-07-19 10:47:32,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 10:47:32,575 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 18 [2022-07-19 10:47:32,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:47:32,582 INFO L225 Difference]: With dead ends: 56 [2022-07-19 10:47:32,582 INFO L226 Difference]: Without dead ends: 26 [2022-07-19 10:47:32,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 10:47:32,589 INFO L413 NwaCegarLoop]: 36 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, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:47:32,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:47:32,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-19 10:47:32,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-19 10:47:32,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:32,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-07-19 10:47:32,623 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2022-07-19 10:47:32,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:47:32,624 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-07-19 10:47:32,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:32,625 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-07-19 10:47:32,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-19 10:47:32,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:47:32,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:47:32,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 10:47:32,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:47:32,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:47:32,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1344199344, now seen corresponding path program 1 times [2022-07-19 10:47:32,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:47:32,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714156847] [2022-07-19 10:47:32,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:47:32,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:47:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:47:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:47:32,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:47:32,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714156847] [2022-07-19 10:47:32,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714156847] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:47:32,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:47:32,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 10:47:32,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132470372] [2022-07-19 10:47:32,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:47:32,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 10:47:32,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:47:32,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 10:47:32,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 10:47:32,762 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:32,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:47:32,836 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2022-07-19 10:47:32,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 10:47:32,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2022-07-19 10:47:32,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:47:32,837 INFO L225 Difference]: With dead ends: 61 [2022-07-19 10:47:32,838 INFO L226 Difference]: Without dead ends: 42 [2022-07-19 10:47:32,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 10:47:32,839 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 47 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:47:32,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 18 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:47:32,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-19 10:47:32,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2022-07-19 10:47:32,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:32,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-07-19 10:47:32,847 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18 [2022-07-19 10:47:32,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:47:32,847 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-07-19 10:47:32,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:32,848 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-07-19 10:47:32,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-19 10:47:32,848 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:47:32,849 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:47:32,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 10:47:32,849 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:47:32,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:47:32,850 INFO L85 PathProgramCache]: Analyzing trace with hash -933126362, now seen corresponding path program 1 times [2022-07-19 10:47:32,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:47:32,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987558756] [2022-07-19 10:47:32,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:47:32,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:47:32,888 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:47:32,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207951546] [2022-07-19 10:47:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:47:32,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:47:32,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:47:32,895 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:47:32,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 10:47:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:47:33,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-19 10:47:33,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:47:33,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-19 10:47:33,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 10:47:33,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 10:47:33,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-07-19 10:47:33,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-07-19 10:47:33,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-07-19 10:47:33,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2022-07-19 10:47:33,796 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2022-07-19 10:47:34,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 41 [2022-07-19 10:47:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:47:34,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:47:36,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:47:36,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:47:36,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:47:36,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987558756] [2022-07-19 10:47:36,586 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:47:36,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207951546] [2022-07-19 10:47:36,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207951546] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:47:36,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:47:36,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2022-07-19 10:47:36,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613940982] [2022-07-19 10:47:36,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:47:36,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-19 10:47:36,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:47:36,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-19 10:47:36,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2022-07-19 10:47:36,590 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:39,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:47:39,072 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2022-07-19 10:47:39,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 10:47:39,073 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-07-19 10:47:39,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:47:39,074 INFO L225 Difference]: With dead ends: 58 [2022-07-19 10:47:39,074 INFO L226 Difference]: Without dead ends: 56 [2022-07-19 10:47:39,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2022-07-19 10:47:39,076 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 10:47:39,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 169 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 342 Invalid, 0 Unknown, 61 Unchecked, 1.3s Time] [2022-07-19 10:47:39,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-19 10:47:39,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2022-07-19 10:47:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 51 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:39,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2022-07-19 10:47:39,085 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 28 [2022-07-19 10:47:39,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:47:39,085 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2022-07-19 10:47:39,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:39,086 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2022-07-19 10:47:39,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-19 10:47:39,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:47:39,087 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, 1, 1, 1, 1, 1, 1] [2022-07-19 10:47:39,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 10:47:39,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:47:39,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:47:39,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:47:39,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1642466588, now seen corresponding path program 2 times [2022-07-19 10:47:39,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:47:39,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647043122] [2022-07-19 10:47:39,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:47:39,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:47:39,331 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:47:39,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740705611] [2022-07-19 10:47:39,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 10:47:39,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:47:39,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:47:39,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:47:39,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 10:47:39,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 10:47:39,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:47:39,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 10:47:39,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:47:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 10:47:39,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:47:39,537 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 10:47:39,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:47:39,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647043122] [2022-07-19 10:47:39,537 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:47:39,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740705611] [2022-07-19 10:47:39,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740705611] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:47:39,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:47:39,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-19 10:47:39,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977104489] [2022-07-19 10:47:39,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:47:39,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 10:47:39,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:47:39,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 10:47:39,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-19 10:47:39,545 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 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) [2022-07-19 10:47:39,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:47:39,754 INFO L93 Difference]: Finished difference Result 121 states and 142 transitions. [2022-07-19 10:47:39,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 10:47:39,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 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 30 [2022-07-19 10:47:39,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:47:39,756 INFO L225 Difference]: With dead ends: 121 [2022-07-19 10:47:39,756 INFO L226 Difference]: Without dead ends: 78 [2022-07-19 10:47:39,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-19 10:47:39,757 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 85 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:47:39,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 47 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:47:39,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-07-19 10:47:39,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 56. [2022-07-19 10:47:39,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 55 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:39,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-07-19 10:47:39,772 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 30 [2022-07-19 10:47:39,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:47:39,772 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-07-19 10:47:39,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 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) [2022-07-19 10:47:39,773 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-07-19 10:47:39,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-19 10:47:39,776 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:47:39,777 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, 1, 1, 1, 1, 1, 1] [2022-07-19 10:47:39,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 10:47:39,999 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,SelfDestructingSolverStorable3 [2022-07-19 10:47:40,000 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:47:40,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:47:40,000 INFO L85 PathProgramCache]: Analyzing trace with hash -396360796, now seen corresponding path program 3 times [2022-07-19 10:47:40,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:47:40,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086645999] [2022-07-19 10:47:40,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:47:40,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:47:40,023 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:47:40,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723763333] [2022-07-19 10:47:40,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 10:47:40,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:47:40,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:47:40,026 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:47:40,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 10:47:40,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 10:47:40,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:47:40,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 10:47:40,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:47:40,163 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 10:47:40,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:47:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 10:47:40,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:47:40,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086645999] [2022-07-19 10:47:40,196 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:47:40,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723763333] [2022-07-19 10:47:40,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723763333] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:47:40,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:47:40,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-19 10:47:40,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272246927] [2022-07-19 10:47:40,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:47:40,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 10:47:40,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:47:40,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 10:47:40,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-19 10:47:40,200 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 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) [2022-07-19 10:47:40,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:47:40,371 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2022-07-19 10:47:40,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 10:47:40,372 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 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 30 [2022-07-19 10:47:40,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:47:40,374 INFO L225 Difference]: With dead ends: 74 [2022-07-19 10:47:40,375 INFO L226 Difference]: Without dead ends: 57 [2022-07-19 10:47:40,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-07-19 10:47:40,383 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 127 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:47:40,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 36 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:47:40,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-19 10:47:40,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2022-07-19 10:47:40,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:40,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-07-19 10:47:40,404 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 30 [2022-07-19 10:47:40,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:47:40,404 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-07-19 10:47:40,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 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) [2022-07-19 10:47:40,405 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-07-19 10:47:40,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-19 10:47:40,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:47:40,406 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:47:40,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 10:47:40,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:47:40,632 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:47:40,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:47:40,632 INFO L85 PathProgramCache]: Analyzing trace with hash 389318684, now seen corresponding path program 4 times [2022-07-19 10:47:40,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:47:40,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715380241] [2022-07-19 10:47:40,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:47:40,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:47:40,669 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:47:40,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1873260838] [2022-07-19 10:47:40,669 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 10:47:40,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:47:40,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:47:40,671 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:47:40,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 10:47:40,753 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 10:47:40,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:47:40,755 WARN L261 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-19 10:47:40,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:47:40,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 10:47:40,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:40,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 10:47:40,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:40,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:40,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-07-19 10:47:40,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:40,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:47:40,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:40,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2022-07-19 10:47:41,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:41,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:41,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-07-19 10:47:41,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:41,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:47:41,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:41,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 44 [2022-07-19 10:47:41,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:41,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:41,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 39 [2022-07-19 10:47:41,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:41,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:41,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 47 [2022-07-19 10:47:41,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:41,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:47:41,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:41,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 45 [2022-07-19 10:47:41,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:41,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:41,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2022-07-19 10:47:41,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:41,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:47:41,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:41,639 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 41 [2022-07-19 10:47:41,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:41,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:41,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:41,783 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:47:41,785 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2022-07-19 10:47:42,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:42,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2022-07-19 10:47:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:47:42,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:48:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:48:29,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:48:29,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715380241] [2022-07-19 10:48:29,952 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:48:29,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873260838] [2022-07-19 10:48:29,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873260838] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:48:29,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:48:29,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 49 [2022-07-19 10:48:29,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121091993] [2022-07-19 10:48:29,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:48:29,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-19 10:48:29,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:48:29,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-19 10:48:29,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2134, Unknown=5, NotChecked=0, Total=2352 [2022-07-19 10:48:29,956 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:49:10,992 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 104 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 10:49:13,107 WARN L833 $PredicateComparison]: unable to prove that (and (or (< 2 c_~N~0) (= (let ((.cse4 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse2 (let ((.cse11 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse8 (select .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse10 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse9 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse8 .cse10))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4))) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse8 .cse9 .cse10))))) (store .cse5 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse7 (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse6 (store .cse7 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse8 .cse9 (select .cse7 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse10)))) (store .cse6 .cse4 (+ (select .cse7 .cse4) (select (select (store .cse5 |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))))))))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4))) (+ .cse0 .cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))))))) (+ (* c_~N~0 2) (* c_~N~0 c_~N~0) 1))) (forall ((~N~0 Int)) (or (= (+ (* 2 ~N~0) (* ~N~0 ~N~0) 1) (let ((.cse16 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse14 (let ((.cse25 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (let ((.cse23 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse25))) (let ((.cse24 (select .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse20 (select .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse22 (select .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse21 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse20 .cse22))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16))) (let ((.cse17 (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse20 .cse21 .cse22))))) (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse19 (select .cse17 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse18 (store .cse19 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse20 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse21 .cse22)))) (store .cse18 .cse16 (+ (select .cse19 .cse16) (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse18) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))))))))))) (let ((.cse15 (select .cse14 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse13 (select (select (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse12 (select (select (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse13)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16))) (+ .cse12 .cse13 (select (select (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse13))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) (< 2 ~N~0) (not (< |c_ULTIMATE.start_main_~i~0#1| ~N~0))))) is different from false [2022-07-19 10:49:47,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:49:47,779 INFO L93 Difference]: Finished difference Result 111 states and 128 transitions. [2022-07-19 10:49:47,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-07-19 10:49:47,782 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-07-19 10:49:47,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:49:47,784 INFO L225 Difference]: With dead ends: 111 [2022-07-19 10:49:47,784 INFO L226 Difference]: Without dead ends: 109 [2022-07-19 10:49:47,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 118.3s TimeCoverageRelationStatistics Valid=376, Invalid=4729, Unknown=11, NotChecked=140, Total=5256 [2022-07-19 10:49:47,787 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 22 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 230 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-07-19 10:49:47,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 153 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 770 Invalid, 0 Unknown, 230 Unchecked, 6.7s Time] [2022-07-19 10:49:47,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-07-19 10:49:47,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 86. [2022-07-19 10:49:47,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1764705882352942) internal successors, (100), 85 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) [2022-07-19 10:49:47,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 100 transitions. [2022-07-19 10:49:47,807 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 100 transitions. Word has length 38 [2022-07-19 10:49:47,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:49:47,809 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 100 transitions. [2022-07-19 10:49:47,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:49:47,809 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 100 transitions. [2022-07-19 10:49:47,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-19 10:49:47,815 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:49:47,815 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:49:47,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 10:49:48,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:49:48,016 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:49:48,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:49:48,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1666934362, now seen corresponding path program 5 times [2022-07-19 10:49:48,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:49:48,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517402935] [2022-07-19 10:49:48,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:49:48,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:49:48,066 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:49:48,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1688010595] [2022-07-19 10:49:48,067 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-19 10:49:48,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:49:48,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:49:48,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:49:48,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 10:49:48,212 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-07-19 10:49:48,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:49:48,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 10:49:48,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:49:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 10:49:48,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:49:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 10:49:48,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:49:48,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517402935] [2022-07-19 10:49:48,333 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:49:48,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688010595] [2022-07-19 10:49:48,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688010595] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:49:48,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:49:48,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-19 10:49:48,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361432870] [2022-07-19 10:49:48,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:49:48,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 10:49:48,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:49:48,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 10:49:48,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-19 10:49:48,335 INFO L87 Difference]: Start difference. First operand 86 states and 100 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 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) [2022-07-19 10:49:48,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:49:48,674 INFO L93 Difference]: Finished difference Result 173 states and 198 transitions. [2022-07-19 10:49:48,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 10:49:48,675 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 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 40 [2022-07-19 10:49:48,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:49:48,675 INFO L225 Difference]: With dead ends: 173 [2022-07-19 10:49:48,676 INFO L226 Difference]: Without dead ends: 127 [2022-07-19 10:49:48,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-07-19 10:49:48,677 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 134 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 10:49:48,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 110 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 10:49:48,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-07-19 10:49:48,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 78. [2022-07-19 10:49:48,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 77 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:49:48,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2022-07-19 10:49:48,691 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 40 [2022-07-19 10:49:48,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:49:48,692 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2022-07-19 10:49:48,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 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) [2022-07-19 10:49:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2022-07-19 10:49:48,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-19 10:49:48,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:49:48,693 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:49:48,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 10:49:48,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:49:48,912 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:49:48,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:49:48,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2118485530, now seen corresponding path program 6 times [2022-07-19 10:49:48,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:49:48,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165402900] [2022-07-19 10:49:48,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:49:48,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:49:48,949 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:49:48,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028953913] [2022-07-19 10:49:48,956 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-19 10:49:48,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:49:48,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:49:48,958 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) [2022-07-19 10:49:48,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 10:49:49,041 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-07-19 10:49:49,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:49:49,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 10:49:49,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:49:49,118 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 10:49:49,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:49:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 10:49:49,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:49:49,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165402900] [2022-07-19 10:49:49,173 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:49:49,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028953913] [2022-07-19 10:49:49,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028953913] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:49:49,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:49:49,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-19 10:49:49,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634655296] [2022-07-19 10:49:49,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:49:49,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 10:49:49,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:49:49,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 10:49:49,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-19 10:49:49,175 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 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) [2022-07-19 10:49:49,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:49:49,376 INFO L93 Difference]: Finished difference Result 143 states and 157 transitions. [2022-07-19 10:49:49,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 10:49:49,376 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 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 40 [2022-07-19 10:49:49,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:49:49,377 INFO L225 Difference]: With dead ends: 143 [2022-07-19 10:49:49,377 INFO L226 Difference]: Without dead ends: 107 [2022-07-19 10:49:49,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-19 10:49:49,378 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 144 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 10:49:49,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 59 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 10:49:49,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-07-19 10:49:49,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2022-07-19 10:49:49,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 81 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:49:49,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2022-07-19 10:49:49,390 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 40 [2022-07-19 10:49:49,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:49:49,391 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2022-07-19 10:49:49,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 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) [2022-07-19 10:49:49,391 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2022-07-19 10:49:49,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-19 10:49:49,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:49:49,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:49:49,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-19 10:49:49,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:49:49,610 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:49:49,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:49:49,611 INFO L85 PathProgramCache]: Analyzing trace with hash -465930606, now seen corresponding path program 1 times [2022-07-19 10:49:49,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:49:49,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872056872] [2022-07-19 10:49:49,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:49:49,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:49:49,649 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:49:49,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1687939151] [2022-07-19 10:49:49,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:49:49,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:49:49,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:49:49,676 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) [2022-07-19 10:49:49,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 10:49:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:49:49,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-19 10:49:49,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:49:49,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-19 10:49:49,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-19 10:49:49,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:49:49,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-19 10:49:49,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-07-19 10:49:49,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:49:49,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-07-19 10:49:50,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:49:50,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:49:50,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-07-19 10:49:50,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:49:50,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2022-07-19 10:49:50,181 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2022-07-19 10:49:50,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-07-19 10:49:50,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-07-19 10:49:50,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:49:50,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2022-07-19 10:49:50,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:49:50,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:49:50,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2022-07-19 10:49:50,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:49:50,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-07-19 10:49:50,818 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 10:49:50,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 83 [2022-07-19 10:49:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 10:49:50,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:49:51,559 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 10:49:51,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 75 [2022-07-19 10:50:01,721 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int))) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse5 (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse4 .cse5 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse4 .cse5))))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse2 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse0 (+ (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (.cse1 (+ (* c_~N~0 2) (* c_~N~0 c_~N~0) 1))) (or (not (= .cse0 .cse1)) (= (+ (select .cse2 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~a~0#1.offset| .cse0)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) .cse1)))))) is different from false [2022-07-19 10:50:01,839 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int))) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse5 (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse4 .cse5 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse4 .cse5))))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse2 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse0 (+ (select v_arrayElimArr_1 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|))) (.cse1 (+ (* c_~N~0 2) (* c_~N~0 c_~N~0) 1))) (or (not (= .cse0 .cse1)) (= (+ (select .cse2 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~a~0#1.offset| .cse0)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) .cse1)))))) is different from false [2022-07-19 10:50:01,936 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int))) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse8 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse5 (+ .cse8 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (let ((.cse7 (+ .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse6 .cse7 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse6 .cse7)))))) (store .cse4 .cse5 (+ (select .cse6 .cse5) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse2 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse0 (+ (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (.cse1 (+ (* c_~N~0 2) (* c_~N~0 c_~N~0) 1))) (or (not (= .cse0 .cse1)) (= (+ (select .cse2 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~a~0#1.offset| .cse0)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) .cse1)))))) is different from false [2022-07-19 10:50:04,713 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int))) (let ((.cse3 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse5 (store .cse6 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (store .cse5 .cse3 (+ (select .cse6 .cse3) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse5) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse2 (+ (select v_arrayElimArr_1 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|))) (.cse4 (+ (* c_~N~0 2) (* c_~N~0 c_~N~0) 1))) (or (= (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse1 .cse3)) .cse4) (not (= .cse2 .cse4)))))))) is different from false [2022-07-19 10:50:07,248 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_429 Int)) (let ((.cse3 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse0 (store (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_429)))) (store .cse5 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse7 (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse6 (store .cse7 |c_ULTIMATE.start_main_~a~0#1.offset| (+ v_ArrVal_429 (select .cse7 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (store .cse6 .cse3 (+ (select .cse7 .cse3) (select (select (store .cse5 |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|))))))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse2 (+ (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|))) (.cse4 (+ (* c_~N~0 2) (* c_~N~0 c_~N~0) 1))) (or (= (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse1 .cse3)) .cse4) (not (= .cse2 .cse4)))))))) is different from false [2022-07-19 10:50:07,395 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 10:50:07,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 508 treesize of output 409 [2022-07-19 10:50:11,925 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-07-19 10:50:11,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-07-19 10:50:11,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:50:11,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872056872] [2022-07-19 10:50:11,927 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:50:11,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687939151] [2022-07-19 10:50:11,928 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-19 10:50:11,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 10:50:12,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:50:12,129 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:824) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:768) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 45 more [2022-07-19 10:50:12,132 INFO L158 Benchmark]: Toolchain (without parser) took 160666.58ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 67.3MB in the beginning and 42.2MB in the end (delta: 25.2MB). Peak memory consumption was 46.6MB. Max. memory is 16.1GB. [2022-07-19 10:50:12,133 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 81.8MB. Free memory was 51.2MB in the beginning and 51.2MB in the end (delta: 24.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 10:50:12,133 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.40ms. Allocated memory is still 98.6MB. Free memory was 67.0MB in the beginning and 74.8MB in the end (delta: -7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 10:50:12,133 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.92ms. Allocated memory is still 98.6MB. Free memory was 74.8MB in the beginning and 73.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 10:50:12,133 INFO L158 Benchmark]: Boogie Preprocessor took 44.58ms. Allocated memory is still 98.6MB. Free memory was 73.3MB in the beginning and 71.8MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 10:50:12,134 INFO L158 Benchmark]: RCFGBuilder took 391.46ms. Allocated memory is still 98.6MB. Free memory was 71.8MB in the beginning and 60.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 10:50:12,134 INFO L158 Benchmark]: TraceAbstraction took 159874.88ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 59.7MB in the beginning and 42.2MB in the end (delta: 17.5MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2022-07-19 10:50:12,135 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 81.8MB. Free memory was 51.2MB in the beginning and 51.2MB in the end (delta: 24.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.40ms. Allocated memory is still 98.6MB. Free memory was 67.0MB in the beginning and 74.8MB in the end (delta: -7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.92ms. Allocated memory is still 98.6MB. Free memory was 74.8MB in the beginning and 73.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.58ms. Allocated memory is still 98.6MB. Free memory was 73.3MB in the beginning and 71.8MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 391.46ms. Allocated memory is still 98.6MB. Free memory was 71.8MB in the beginning and 60.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 159874.88ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 59.7MB in the beginning and 42.2MB in the end (delta: 17.5MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/ssina.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 4c9ca6c94ff0fae82185b19014fc033eef7a37c04f3b092e10c4eebb38e41241 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 10:50:13,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 10:50:13,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 10:50:13,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 10:50:13,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 10:50:13,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 10:50:13,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 10:50:13,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 10:50:13,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 10:50:13,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 10:50:13,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 10:50:13,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 10:50:13,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 10:50:13,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 10:50:13,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 10:50:13,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 10:50:13,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 10:50:13,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 10:50:13,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 10:50:13,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 10:50:13,867 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 10:50:13,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 10:50:13,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 10:50:13,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 10:50:13,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 10:50:13,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 10:50:13,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 10:50:13,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 10:50:13,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 10:50:13,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 10:50:13,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 10:50:13,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 10:50:13,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 10:50:13,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 10:50:13,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 10:50:13,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 10:50:13,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 10:50:13,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 10:50:13,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 10:50:13,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 10:50:13,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 10:50:13,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 10:50:13,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 10:50:13,903 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 10:50:13,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 10:50:13,905 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 10:50:13,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 10:50:13,906 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 10:50:13,907 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 10:50:13,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 10:50:13,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 10:50:13,908 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 10:50:13,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 10:50:13,908 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 10:50:13,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 10:50:13,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 10:50:13,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 10:50:13,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 10:50:13,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 10:50:13,915 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 10:50:13,918 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 10:50:13,918 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 10:50:13,918 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 10:50:13,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 10:50:13,920 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 10:50:13,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 10:50:13,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 10:50:13,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 10:50:13,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 10:50:13,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:50:13,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 10:50:13,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 10:50:13,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 10:50:13,923 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 10:50:13,923 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 10:50:13,923 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 10:50:13,924 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 10:50:13,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 10:50:13,925 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 10:50:13,925 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c9ca6c94ff0fae82185b19014fc033eef7a37c04f3b092e10c4eebb38e41241 [2022-07-19 10:50:14,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 10:50:14,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 10:50:14,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 10:50:14,297 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 10:50:14,297 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 10:50:14,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ssina.c [2022-07-19 10:50:14,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/376bcf3cf/87d2d2566ce949b5819d02f28fccee1f/FLAG1e3b8c8c8 [2022-07-19 10:50:14,783 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 10:50:14,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ssina.c [2022-07-19 10:50:14,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/376bcf3cf/87d2d2566ce949b5819d02f28fccee1f/FLAG1e3b8c8c8 [2022-07-19 10:50:15,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/376bcf3cf/87d2d2566ce949b5819d02f28fccee1f [2022-07-19 10:50:15,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 10:50:15,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 10:50:15,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 10:50:15,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 10:50:15,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 10:50:15,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:50:15" (1/1) ... [2022-07-19 10:50:15,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19865391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:50:15, skipping insertion in model container [2022-07-19 10:50:15,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:50:15" (1/1) ... [2022-07-19 10:50:15,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 10:50:15,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 10:50:15,348 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ssina.c[588,601] [2022-07-19 10:50:15,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:50:15,381 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 10:50:15,394 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ssina.c[588,601] [2022-07-19 10:50:15,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:50:15,445 INFO L208 MainTranslator]: Completed translation [2022-07-19 10:50:15,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:50:15 WrapperNode [2022-07-19 10:50:15,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 10:50:15,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 10:50:15,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 10:50:15,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 10:50:15,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:50:15" (1/1) ... [2022-07-19 10:50:15,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:50:15" (1/1) ... [2022-07-19 10:50:15,506 INFO L137 Inliner]: procedures = 19, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 110 [2022-07-19 10:50:15,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 10:50:15,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 10:50:15,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 10:50:15,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 10:50:15,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:50:15" (1/1) ... [2022-07-19 10:50:15,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:50:15" (1/1) ... [2022-07-19 10:50:15,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:50:15" (1/1) ... [2022-07-19 10:50:15,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:50:15" (1/1) ... [2022-07-19 10:50:15,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:50:15" (1/1) ... [2022-07-19 10:50:15,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:50:15" (1/1) ... [2022-07-19 10:50:15,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:50:15" (1/1) ... [2022-07-19 10:50:15,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 10:50:15,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 10:50:15,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 10:50:15,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 10:50:15,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:50:15" (1/1) ... [2022-07-19 10:50:15,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:50:15,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:50:15,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 10:50:15,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 10:50:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 10:50:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 10:50:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 10:50:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-19 10:50:15,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 10:50:15,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 10:50:15,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 10:50:15,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-19 10:50:15,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 10:50:15,711 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 10:50:15,713 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 10:50:16,065 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 10:50:16,069 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 10:50:16,069 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-19 10:50:16,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:50:16 BoogieIcfgContainer [2022-07-19 10:50:16,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 10:50:16,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 10:50:16,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 10:50:16,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 10:50:16,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:50:15" (1/3) ... [2022-07-19 10:50:16,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df668e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:50:16, skipping insertion in model container [2022-07-19 10:50:16,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:50:15" (2/3) ... [2022-07-19 10:50:16,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df668e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:50:16, skipping insertion in model container [2022-07-19 10:50:16,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:50:16" (3/3) ... [2022-07-19 10:50:16,083 INFO L111 eAbstractionObserver]: Analyzing ICFG ssina.c [2022-07-19 10:50:16,108 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 10:50:16,108 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 10:50:16,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 10:50:16,173 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@55628814, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5bf68058 [2022-07-19 10:50:16,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 10:50:16,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:50:16,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-19 10:50:16,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:50:16,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:50:16,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:50:16,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:50:16,190 INFO L85 PathProgramCache]: Analyzing trace with hash -635308358, now seen corresponding path program 1 times [2022-07-19 10:50:16,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 10:50:16,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639608083] [2022-07-19 10:50:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:50:16,202 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 10:50:16,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 10:50:16,207 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 10:50:16,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 10:50:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:50:16,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 10:50:16,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:50:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:50:16,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 10:50:16,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 10:50:16,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639608083] [2022-07-19 10:50:16,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639608083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:50:16,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:50:16,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 10:50:16,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538687360] [2022-07-19 10:50:16,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:50:16,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 10:50:16,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 10:50:16,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 10:50:16,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 10:50:16,361 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:50:16,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:50:16,374 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2022-07-19 10:50:16,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 10:50:16,376 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 18 [2022-07-19 10:50:16,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:50:16,382 INFO L225 Difference]: With dead ends: 56 [2022-07-19 10:50:16,382 INFO L226 Difference]: Without dead ends: 26 [2022-07-19 10:50:16,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 10:50:16,387 INFO L413 NwaCegarLoop]: 36 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, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:50:16,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:50:16,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-19 10:50:16,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-19 10:50:16,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:50:16,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-07-19 10:50:16,412 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2022-07-19 10:50:16,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:50:16,412 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-07-19 10:50:16,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:50:16,413 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-07-19 10:50:16,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-19 10:50:16,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:50:16,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:50:16,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-19 10:50:16,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 10:50:16,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:50:16,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:50:16,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1344199344, now seen corresponding path program 1 times [2022-07-19 10:50:16,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 10:50:16,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408044566] [2022-07-19 10:50:16,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:50:16,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 10:50:16,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 10:50:16,627 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 10:50:16,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 10:50:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:50:16,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 10:50:16,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:50:16,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:50:16,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 10:50:16,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 10:50:16,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408044566] [2022-07-19 10:50:16,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408044566] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:50:16,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:50:16,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 10:50:16,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980019844] [2022-07-19 10:50:16,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:50:16,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 10:50:16,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 10:50:16,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 10:50:16,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 10:50:16,833 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:50:17,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:50:17,072 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2022-07-19 10:50:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 10:50:17,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2022-07-19 10:50:17,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:50:17,080 INFO L225 Difference]: With dead ends: 61 [2022-07-19 10:50:17,080 INFO L226 Difference]: Without dead ends: 42 [2022-07-19 10:50:17,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-19 10:50:17,081 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 70 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 10:50:17,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 16 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 10:50:17,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-19 10:50:17,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2022-07-19 10:50:17,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:50:17,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-07-19 10:50:17,089 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18 [2022-07-19 10:50:17,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:50:17,089 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-07-19 10:50:17,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:50:17,090 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-07-19 10:50:17,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-19 10:50:17,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:50:17,090 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:50:17,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-19 10:50:17,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 10:50:17,291 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:50:17,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:50:17,292 INFO L85 PathProgramCache]: Analyzing trace with hash -933126362, now seen corresponding path program 1 times [2022-07-19 10:50:17,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 10:50:17,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700054959] [2022-07-19 10:50:17,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:50:17,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 10:50:17,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 10:50:17,296 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 10:50:17,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-19 10:50:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:50:17,512 WARN L261 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-19 10:50:17,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:50:17,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-19 10:50:17,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:50:17,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:50:17,672 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-07-19 10:50:17,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:50:17,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:50:17,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:50:17,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 50 [2022-07-19 10:50:18,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:50:18,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:50:18,200 INFO L356 Elim1Store]: treesize reduction 60, result has 25.9 percent of original size [2022-07-19 10:50:18,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 103 treesize of output 63 [2022-07-19 10:50:18,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:50:18,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:50:18,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 73 [2022-07-19 10:50:18,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:50:18,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:50:18,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:50:18,663 INFO L356 Elim1Store]: treesize reduction 52, result has 24.6 percent of original size [2022-07-19 10:50:18,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 99 treesize of output 75 [2022-07-19 10:50:18,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:50:18,782 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:50:18,808 INFO L356 Elim1Store]: treesize reduction 60, result has 25.9 percent of original size [2022-07-19 10:50:18,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 147 treesize of output 107 [2022-07-19 10:50:19,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:50:19,084 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 159 [2022-07-19 10:50:19,420 INFO L356 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-07-19 10:50:19,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 391 treesize of output 355 [2022-07-19 10:50:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:50:19,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:52:02,113 INFO L173 IndexEqualityManager]: detected equality via solver