./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/matrix-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 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/loops/matrix-1.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 484b00968af178bafd1c632864ac68eeb543ca8851deb47f0795724cfa80a660 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 19:57:53,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 19:57:53,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 19:57:53,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 19:57:53,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 19:57:53,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 19:57:53,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 19:57:53,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 19:57:53,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 19:57:53,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 19:57:53,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 19:57:53,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 19:57:53,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 19:57:53,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 19:57:53,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 19:57:53,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 19:57:53,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 19:57:53,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 19:57:53,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 19:57:53,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 19:57:53,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 19:57:53,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 19:57:53,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 19:57:53,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 19:57:53,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 19:57:53,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 19:57:53,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 19:57:53,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 19:57:53,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 19:57:53,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 19:57:53,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 19:57:53,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 19:57:53,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 19:57:53,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 19:57:53,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 19:57:53,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 19:57:53,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 19:57:53,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 19:57:53,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 19:57:53,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 19:57:53,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 19:57:53,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 19:57:53,169 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 19:57:53,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 19:57:53,170 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 19:57:53,170 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 19:57:53,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 19:57:53,179 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 19:57:53,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 19:57:53,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 19:57:53,179 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 19:57:53,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 19:57:53,180 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 19:57:53,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 19:57:53,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 19:57:53,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 19:57:53,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 19:57:53,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 19:57:53,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 19:57:53,182 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 19:57:53,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 19:57:53,182 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 19:57:53,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 19:57:53,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 19:57:53,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 19:57:53,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 19:57:53,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:57:53,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 19:57:53,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 19:57:53,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 19:57:53,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 19:57:53,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 19:57:53,184 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 19:57:53,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 19:57:53,184 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 19:57:53,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 19:57:53,185 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 19:57:53,185 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 484b00968af178bafd1c632864ac68eeb543ca8851deb47f0795724cfa80a660 [2023-02-15 19:57:53,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 19:57:53,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 19:57:53,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 19:57:53,457 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 19:57:53,458 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 19:57:53,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/matrix-1.c [2023-02-15 19:57:54,626 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 19:57:54,793 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 19:57:54,794 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-1.c [2023-02-15 19:57:54,798 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19f3fef01/0fe2b6bf69754ce287e7a969300867bf/FLAG07f34d3e0 [2023-02-15 19:57:54,814 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19f3fef01/0fe2b6bf69754ce287e7a969300867bf [2023-02-15 19:57:54,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 19:57:54,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 19:57:54,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 19:57:54,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 19:57:54,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 19:57:54,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:57:54" (1/1) ... [2023-02-15 19:57:54,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec7fe0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:57:54, skipping insertion in model container [2023-02-15 19:57:54,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:57:54" (1/1) ... [2023-02-15 19:57:54,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 19:57:54,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 19:57:54,982 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-1.c[320,333] [2023-02-15 19:57:55,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:57:55,009 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 19:57:55,021 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-1.c[320,333] [2023-02-15 19:57:55,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:57:55,041 INFO L208 MainTranslator]: Completed translation [2023-02-15 19:57:55,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:57:55 WrapperNode [2023-02-15 19:57:55,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 19:57:55,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 19:57:55,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 19:57:55,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 19:57:55,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:57:55" (1/1) ... [2023-02-15 19:57:55,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:57:55" (1/1) ... [2023-02-15 19:57:55,074 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2023-02-15 19:57:55,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 19:57:55,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 19:57:55,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 19:57:55,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 19:57:55,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:57:55" (1/1) ... [2023-02-15 19:57:55,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:57:55" (1/1) ... [2023-02-15 19:57:55,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:57:55" (1/1) ... [2023-02-15 19:57:55,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:57:55" (1/1) ... [2023-02-15 19:57:55,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:57:55" (1/1) ... [2023-02-15 19:57:55,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:57:55" (1/1) ... [2023-02-15 19:57:55,092 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:57:55" (1/1) ... [2023-02-15 19:57:55,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:57:55" (1/1) ... [2023-02-15 19:57:55,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 19:57:55,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 19:57:55,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 19:57:55,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 19:57:55,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:57:55" (1/1) ... [2023-02-15 19:57:55,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:57:55,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:57:55,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 19:57:55,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 19:57:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 19:57:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 19:57:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 19:57:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 19:57:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 19:57:55,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 19:57:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 19:57:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 19:57:55,225 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 19:57:55,226 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 19:57:55,400 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 19:57:55,404 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 19:57:55,405 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 19:57:55,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:57:55 BoogieIcfgContainer [2023-02-15 19:57:55,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 19:57:55,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 19:57:55,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 19:57:55,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 19:57:55,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 07:57:54" (1/3) ... [2023-02-15 19:57:55,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee845b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:57:55, skipping insertion in model container [2023-02-15 19:57:55,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:57:55" (2/3) ... [2023-02-15 19:57:55,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee845b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:57:55, skipping insertion in model container [2023-02-15 19:57:55,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:57:55" (3/3) ... [2023-02-15 19:57:55,414 INFO L112 eAbstractionObserver]: Analyzing ICFG matrix-1.c [2023-02-15 19:57:55,450 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 19:57:55,451 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 19:57:55,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 19:57:55,494 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@56d9ddef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 19:57:55,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 19:57:55,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:57:55,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 19:57:55,502 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:57:55,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 19:57:55,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:57:55,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:57:55,508 INFO L85 PathProgramCache]: Analyzing trace with hash 889621918, now seen corresponding path program 1 times [2023-02-15 19:57:55,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:57:55,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115070026] [2023-02-15 19:57:55,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:57:55,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:57:55,589 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:57:55,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021580405] [2023-02-15 19:57:55,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:57:55,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:57:55,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:57:55,593 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:57:55,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 19:57:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:57:55,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 19:57:55,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:57:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:57:55,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 19:57:55,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:57:55,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115070026] [2023-02-15 19:57:55,774 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:57:55,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021580405] [2023-02-15 19:57:55,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021580405] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:57:55,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:57:55,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:57:55,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116636773] [2023-02-15 19:57:55,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:57:55,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:57:55,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:57:55,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:57:55,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:57:55,823 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:57:55,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:57:55,874 INFO L93 Difference]: Finished difference Result 33 states and 48 transitions. [2023-02-15 19:57:55,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:57:55,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-02-15 19:57:55,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:57:55,884 INFO L225 Difference]: With dead ends: 33 [2023-02-15 19:57:55,884 INFO L226 Difference]: Without dead ends: 16 [2023-02-15 19:57:55,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:57:55,889 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:57:55,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:57:55,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-02-15 19:57:55,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2023-02-15 19:57:55,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:57:55,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-02-15 19:57:55,918 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2023-02-15 19:57:55,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:57:55,918 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-02-15 19:57:55,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:57:55,918 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-02-15 19:57:55,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 19:57:55,919 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:57:55,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:57:55,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 19:57:56,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-15 19:57:56,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:57:56,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:57:56,121 INFO L85 PathProgramCache]: Analyzing trace with hash -235638193, now seen corresponding path program 1 times [2023-02-15 19:57:56,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:57:56,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292686524] [2023-02-15 19:57:56,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:57:56,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:57:56,131 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:57:56,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424354660] [2023-02-15 19:57:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:57:56,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:57:56,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:57:56,140 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:57:56,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 19:57:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:57:56,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 19:57:56,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:57:56,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:57:56,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 19:57:56,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:57:56,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292686524] [2023-02-15 19:57:56,237 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:57:56,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424354660] [2023-02-15 19:57:56,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424354660] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:57:56,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:57:56,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 19:57:56,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090535520] [2023-02-15 19:57:56,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:57:56,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 19:57:56,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:57:56,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 19:57:56,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 19:57:56,240 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:57:56,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:57:56,279 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2023-02-15 19:57:56,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 19:57:56,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2023-02-15 19:57:56,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:57:56,280 INFO L225 Difference]: With dead ends: 28 [2023-02-15 19:57:56,281 INFO L226 Difference]: Without dead ends: 19 [2023-02-15 19:57:56,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 19:57:56,282 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:57:56,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 19 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:57:56,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-15 19:57:56,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2023-02-15 19:57:56,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:57:56,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-02-15 19:57:56,287 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2023-02-15 19:57:56,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:57:56,287 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-02-15 19:57:56,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:57:56,287 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-02-15 19:57:56,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 19:57:56,288 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:57:56,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:57:56,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 19:57:56,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-15 19:57:56,494 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:57:56,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:57:56,495 INFO L85 PathProgramCache]: Analyzing trace with hash -589728809, now seen corresponding path program 1 times [2023-02-15 19:57:56,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:57:56,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394602853] [2023-02-15 19:57:56,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:57:56,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:57:56,506 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:57:56,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144616034] [2023-02-15 19:57:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:57:56,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:57:56,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:57:56,508 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:57:56,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 19:57:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:57:56,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 19:57:56,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:57:56,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 130 [2023-02-15 19:57:56,774 INFO L350 Elim1Store]: Elim1 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-15 19:57:56,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-15 19:57:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:57:56,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:57:57,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 128 [2023-02-15 19:57:57,200 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:57:57,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 128 treesize of output 573 [2023-02-15 19:58:06,480 WARN L233 SmtUtils]: Spent 8.70s on a formula simplification. DAG size of input: 257 DAG size of output: 118 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-02-15 19:58:06,483 INFO L321 Elim1Store]: treesize reduction 1551, result has 23.7 percent of original size [2023-02-15 19:58:06,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 10 new quantified variables, introduced 42 case distinctions, treesize of input 2435 treesize of output 5551 [2023-02-15 19:58:34,252 INFO L321 Elim1Store]: treesize reduction 690, result has 39.5 percent of original size [2023-02-15 19:58:34,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 5 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 31 case distinctions, treesize of input 4202 treesize of output 10164 [2023-02-15 19:58:38,824 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:58:38,860 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:58:38,867 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:58:38,940 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:58:38,941 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:58:38,993 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:58:39,055 INFO L217 Elim1Store]: Index analysis took 116 ms [2023-02-15 19:58:39,155 INFO L321 Elim1Store]: treesize reduction 44, result has 18.5 percent of original size [2023-02-15 19:58:39,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 9767 treesize of output 8845 [2023-02-15 19:58:40,951 INFO L321 Elim1Store]: treesize reduction 33, result has 23.3 percent of original size [2023-02-15 19:58:40,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 490856 treesize of output 262715 [2023-02-15 19:59:05,531 INFO L321 Elim1Store]: treesize reduction 83, result has 4.6 percent of original size [2023-02-15 19:59:05,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 582 treesize of output 371 [2023-02-15 19:59:05,579 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-02-15 19:59:05,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1382 treesize of output 916 [2023-02-15 19:59:44,756 WARN L233 SmtUtils]: Spent 38.79s on a formula simplification. DAG size of input: 435 DAG size of output: 172 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-02-15 19:59:44,756 INFO L321 Elim1Store]: treesize reduction 3702, result has 18.9 percent of original size [2023-02-15 19:59:44,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 9 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 8214 treesize of output 34389 [2023-02-15 20:00:40,085 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 20:00:40,117 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 20:00:40,223 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 20:00:40,249 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 20:00:40,929 INFO L217 Elim1Store]: Index analysis took 705 ms [2023-02-15 20:00:42,696 INFO L321 Elim1Store]: treesize reduction 262, result has 8.1 percent of original size [2023-02-15 20:00:42,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 14 case distinctions, treesize of input 10515 treesize of output 17067 [2023-02-15 20:00:54,401 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 20:00:54,402 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 20:00:54,405 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 20:00:54,407 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 20:00:54,412 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 20:00:54,458 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 20:00:54,504 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 20:00:54,507 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 20:00:54,514 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 20:00:54,514 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 20:00:54,515 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 20:00:54,516 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 20:00:55,435 INFO L321 Elim1Store]: treesize reduction 92, result has 15.6 percent of original size [2023-02-15 20:00:55,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 18059 treesize of output 17984 [2023-02-15 20:01:01,736 INFO L321 Elim1Store]: treesize reduction 119, result has 7.8 percent of original size [2023-02-15 20:01:01,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 6137684980 treesize of output 6136274617