./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.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 404aca328acb019974a4013e1ced341d9a60ed0a822c21407be3158ee94f2c2d --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 19:40:59,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 19:40:59,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 19:40:59,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 19:40:59,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 19:40:59,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 19:40:59,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 19:40:59,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 19:40:59,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 19:40:59,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 19:40:59,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 19:40:59,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 19:40:59,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 19:40:59,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 19:40:59,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 19:40:59,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 19:40:59,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 19:40:59,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 19:40:59,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 19:40:59,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 19:40:59,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 19:40:59,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 19:40:59,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 19:40:59,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 19:40:59,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 19:40:59,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 19:40:59,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 19:40:59,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 19:40:59,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 19:40:59,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 19:40:59,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 19:40:59,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 19:40:59,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 19:40:59,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 19:40:59,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 19:40:59,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 19:40:59,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 19:40:59,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 19:40:59,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 19:40:59,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 19:40:59,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 19:40:59,148 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 19:40:59,184 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 19:40:59,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 19:40:59,187 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 19:40:59,187 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 19:40:59,188 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 19:40:59,188 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 19:40:59,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 19:40:59,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 19:40:59,189 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 19:40:59,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 19:40:59,190 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 19:40:59,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 19:40:59,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 19:40:59,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 19:40:59,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 19:40:59,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 19:40:59,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 19:40:59,191 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 19:40:59,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 19:40:59,192 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 19:40:59,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 19:40:59,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 19:40:59,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 19:40:59,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 19:40:59,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 19:40:59,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 19:40:59,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 19:40:59,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 19:40:59,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 19:40:59,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 19:40:59,194 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 19:40:59,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 19:40:59,195 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 19:40:59,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 19:40:59,195 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 19:40:59,195 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 404aca328acb019974a4013e1ced341d9a60ed0a822c21407be3158ee94f2c2d [2023-02-17 19:40:59,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 19:40:59,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 19:40:59,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 19:40:59,424 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 19:40:59,424 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 19:40:59,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c [2023-02-17 19:41:00,675 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 19:41:00,900 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 19:41:00,901 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c [2023-02-17 19:41:00,905 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfad1a421/ebcc585ea0cf4d8289ad584565fcfdfc/FLAG7083f0388 [2023-02-17 19:41:00,917 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfad1a421/ebcc585ea0cf4d8289ad584565fcfdfc [2023-02-17 19:41:00,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 19:41:00,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 19:41:00,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 19:41:00,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 19:41:00,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 19:41:00,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 07:41:00" (1/1) ... [2023-02-17 19:41:00,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b2748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:41:00, skipping insertion in model container [2023-02-17 19:41:00,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 07:41:00" (1/1) ... [2023-02-17 19:41:00,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 19:41:00,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 19:41:01,043 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c[333,346] [2023-02-17 19:41:01,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 19:41:01,082 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 19:41:01,095 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c[333,346] [2023-02-17 19:41:01,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 19:41:01,114 INFO L208 MainTranslator]: Completed translation [2023-02-17 19:41:01,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:41:01 WrapperNode [2023-02-17 19:41:01,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 19:41:01,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 19:41:01,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 19:41:01,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 19:41:01,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:41:01" (1/1) ... [2023-02-17 19:41:01,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:41:01" (1/1) ... [2023-02-17 19:41:01,142 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2023-02-17 19:41:01,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 19:41:01,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 19:41:01,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 19:41:01,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 19:41:01,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:41:01" (1/1) ... [2023-02-17 19:41:01,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:41:01" (1/1) ... [2023-02-17 19:41:01,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:41:01" (1/1) ... [2023-02-17 19:41:01,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:41:01" (1/1) ... [2023-02-17 19:41:01,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:41:01" (1/1) ... [2023-02-17 19:41:01,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:41:01" (1/1) ... [2023-02-17 19:41:01,165 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:41:01" (1/1) ... [2023-02-17 19:41:01,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:41:01" (1/1) ... [2023-02-17 19:41:01,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 19:41:01,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 19:41:01,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 19:41:01,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 19:41:01,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:41:01" (1/1) ... [2023-02-17 19:41:01,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 19:41:01,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 19:41:01,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 19:41:01,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 19:41:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 19:41:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-17 19:41:01,240 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-17 19:41:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 19:41:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 19:41:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 19:41:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 19:41:01,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 19:41:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 19:41:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 19:41:01,301 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 19:41:01,302 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 19:41:01,463 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 19:41:01,476 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 19:41:01,476 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 19:41:01,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 07:41:01 BoogieIcfgContainer [2023-02-17 19:41:01,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 19:41:01,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 19:41:01,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 19:41:01,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 19:41:01,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 07:41:00" (1/3) ... [2023-02-17 19:41:01,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39206fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 07:41:01, skipping insertion in model container [2023-02-17 19:41:01,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:41:01" (2/3) ... [2023-02-17 19:41:01,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39206fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 07:41:01, skipping insertion in model container [2023-02-17 19:41:01,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 07:41:01" (3/3) ... [2023-02-17 19:41:01,491 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_gen.c [2023-02-17 19:41:01,517 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 19:41:01,517 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 19:41:01,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 19:41:01,568 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;@52e771b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 19:41:01,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 19:41:01,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 19:41:01,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-17 19:41:01,578 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 19:41:01,578 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 19:41:01,579 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 19:41:01,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 19:41:01,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1878530085, now seen corresponding path program 1 times [2023-02-17 19:41:01,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 19:41:01,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250705256] [2023-02-17 19:41:01,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 19:41:01,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 19:41:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 19:41:01,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 19:41:01,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250705256] [2023-02-17 19:41:01,764 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-17 19:41:01,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050911466] [2023-02-17 19:41:01,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 19:41:01,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 19:41:01,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 19:41:01,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 19:41:01,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 19:41:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 19:41:01,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 19:41:01,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 19:41:01,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 19:41:01,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 19:41:01,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050911466] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 19:41:01,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 19:41:01,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 19:41:01,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545235402] [2023-02-17 19:41:01,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 19:41:01,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 19:41:01,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 19:41:01,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 19:41:01,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 19:41:01,984 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 19:41:02,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 19:41:02,006 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2023-02-17 19:41:02,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 19:41:02,008 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-02-17 19:41:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 19:41:02,030 INFO L225 Difference]: With dead ends: 51 [2023-02-17 19:41:02,030 INFO L226 Difference]: Without dead ends: 23 [2023-02-17 19:41:02,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 19:41:02,039 INFO L413 NwaCegarLoop]: 32 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, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 19:41:02,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 19:41:02,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-17 19:41:02,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-17 19:41:02,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 19:41:02,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-02-17 19:41:02,070 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 20 [2023-02-17 19:41:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 19:41:02,070 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-02-17 19:41:02,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 19:41:02,071 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-02-17 19:41:02,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-17 19:41:02,072 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 19:41:02,072 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 19:41:02,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 19:41:02,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-17 19:41:02,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 19:41:02,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 19:41:02,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2096433435, now seen corresponding path program 1 times [2023-02-17 19:41:02,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 19:41:02,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165194957] [2023-02-17 19:41:02,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 19:41:02,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 19:41:02,306 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 19:41:02,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055999510] [2023-02-17 19:41:02,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 19:41:02,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 19:41:02,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 19:41:02,315 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 19:41:02,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 19:41:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 19:41:02,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 19:41:02,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 19:41:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 19:41:02,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 19:41:02,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 19:41:02,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165194957] [2023-02-17 19:41:02,426 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 19:41:02,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055999510] [2023-02-17 19:41:02,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055999510] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 19:41:02,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 19:41:02,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 19:41:02,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013817844] [2023-02-17 19:41:02,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 19:41:02,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 19:41:02,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 19:41:02,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 19:41:02,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 19:41:02,430 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 19:41:04,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 19:41:04,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 19:41:04,045 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2023-02-17 19:41:04,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 19:41:04,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-02-17 19:41:04,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 19:41:04,047 INFO L225 Difference]: With dead ends: 45 [2023-02-17 19:41:04,047 INFO L226 Difference]: Without dead ends: 36 [2023-02-17 19:41:04,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 19:41:04,049 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-02-17 19:41:04,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 29 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-02-17 19:41:04,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-02-17 19:41:04,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 24. [2023-02-17 19:41:04,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 19:41:04,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2023-02-17 19:41:04,055 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 20 [2023-02-17 19:41:04,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 19:41:04,056 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2023-02-17 19:41:04,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 19:41:04,057 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-02-17 19:41:04,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-17 19:41:04,059 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 19:41:04,059 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 19:41:04,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 19:41:04,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-17 19:41:04,266 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 19:41:04,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 19:41:04,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1636168002, now seen corresponding path program 1 times [2023-02-17 19:41:04,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 19:41:04,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446929985] [2023-02-17 19:41:04,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 19:41:04,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 19:41:04,288 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 19:41:04,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924012754] [2023-02-17 19:41:04,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 19:41:04,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 19:41:04,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 19:41:04,296 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 19:41:04,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 19:41:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 19:41:04,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 19:41:04,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 19:41:04,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 19:41:04,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 19:41:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 19:41:04,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 19:41:04,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446929985] [2023-02-17 19:41:04,408 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 19:41:04,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924012754] [2023-02-17 19:41:04,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924012754] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 19:41:04,408 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 19:41:04,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-02-17 19:41:04,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393874224] [2023-02-17 19:41:04,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 19:41:04,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 19:41:04,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 19:41:04,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 19:41:04,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-02-17 19:41:04,411 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 19:41:04,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 19:41:04,912 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2023-02-17 19:41:04,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 19:41:04,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2023-02-17 19:41:04,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 19:41:04,914 INFO L225 Difference]: With dead ends: 73 [2023-02-17 19:41:04,914 INFO L226 Difference]: Without dead ends: 64 [2023-02-17 19:41:04,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-02-17 19:41:04,915 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 85 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-17 19:41:04,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 54 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-17 19:41:04,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-17 19:41:04,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 39. [2023-02-17 19:41:04,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 19:41:04,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2023-02-17 19:41:04,922 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 25 [2023-02-17 19:41:04,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 19:41:04,922 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2023-02-17 19:41:04,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 19:41:04,923 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2023-02-17 19:41:04,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-17 19:41:04,924 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 19:41:04,924 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 19:41:04,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 19:41:05,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 19:41:05,133 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 19:41:05,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 19:41:05,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1458835931, now seen corresponding path program 2 times [2023-02-17 19:41:05,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 19:41:05,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183011994] [2023-02-17 19:41:05,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 19:41:05,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 19:41:05,160 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 19:41:05,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731318060] [2023-02-17 19:41:05,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 19:41:05,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 19:41:05,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 19:41:05,172 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 19:41:05,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 19:41:05,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 19:41:05,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 19:41:05,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 19:41:05,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 19:41:05,310 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 19:41:05,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 19:41:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 19:41:05,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 19:41:05,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183011994] [2023-02-17 19:41:05,367 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 19:41:05,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731318060] [2023-02-17 19:41:05,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731318060] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 19:41:05,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 19:41:05,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-02-17 19:41:05,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302237405] [2023-02-17 19:41:05,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 19:41:05,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 19:41:05,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 19:41:05,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 19:41:05,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-02-17 19:41:05,369 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 19:41:07,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 19:41:07,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 19:41:07,919 INFO L93 Difference]: Finished difference Result 151 states and 190 transitions. [2023-02-17 19:41:07,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 19:41:07,920 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2023-02-17 19:41:07,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 19:41:07,922 INFO L225 Difference]: With dead ends: 151 [2023-02-17 19:41:07,922 INFO L226 Difference]: Without dead ends: 142 [2023-02-17 19:41:07,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2023-02-17 19:41:07,923 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 278 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-02-17 19:41:07,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 102 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 111 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2023-02-17 19:41:07,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-02-17 19:41:07,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 69. [2023-02-17 19:41:07,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 65 states have (on average 1.353846153846154) internal successors, (88), 65 states have internal predecessors, (88), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 19:41:07,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 92 transitions. [2023-02-17 19:41:07,933 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 92 transitions. Word has length 40 [2023-02-17 19:41:07,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 19:41:07,934 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 92 transitions. [2023-02-17 19:41:07,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 19:41:07,935 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 92 transitions. [2023-02-17 19:41:07,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-17 19:41:07,937 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 19:41:07,938 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 19:41:07,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 19:41:08,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 19:41:08,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 19:41:08,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 19:41:08,143 INFO L85 PathProgramCache]: Analyzing trace with hash -54174981, now seen corresponding path program 3 times [2023-02-17 19:41:08,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 19:41:08,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954135242] [2023-02-17 19:41:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 19:41:08,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 19:41:08,175 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 19:41:08,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1911769439] [2023-02-17 19:41:08,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 19:41:08,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 19:41:08,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 19:41:08,177 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 19:41:08,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process