./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array22_pattern.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/array-patterns/array22_pattern.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31d323b6985f030ac0fb5fda45d0cb8af14c3bb3898c8ff09cf5a292e40f357b --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 18:44:24,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 18:44:24,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 18:44:24,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 18:44:24,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 18:44:24,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 18:44:24,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 18:44:24,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 18:44:24,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 18:44:24,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 18:44:24,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 18:44:24,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 18:44:24,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 18:44:24,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 18:44:24,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 18:44:24,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 18:44:24,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 18:44:24,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 18:44:24,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 18:44:24,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 18:44:24,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 18:44:24,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 18:44:24,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 18:44:24,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 18:44:24,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 18:44:24,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 18:44:24,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 18:44:24,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 18:44:24,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 18:44:24,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 18:44:24,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 18:44:24,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 18:44:24,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 18:44:24,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 18:44:24,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 18:44:24,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 18:44:24,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 18:44:24,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 18:44:24,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 18:44:24,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 18:44:24,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 18:44:24,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 18:44:24,086 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 18:44:24,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 18:44:24,090 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 18:44:24,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 18:44:24,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 18:44:24,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 18:44:24,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 18:44:24,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 18:44:24,093 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 18:44:24,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 18:44:24,094 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 18:44:24,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 18:44:24,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 18:44:24,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 18:44:24,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 18:44:24,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 18:44:24,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 18:44:24,095 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 18:44:24,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 18:44:24,096 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 18:44:24,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 18:44:24,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 18:44:24,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 18:44:24,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 18:44:24,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 18:44:24,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 18:44:24,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 18:44:24,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 18:44:24,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 18:44:24,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 18:44:24,098 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 18:44:24,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 18:44:24,098 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 18:44:24,099 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 18:44:24,099 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 18:44:24,099 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31d323b6985f030ac0fb5fda45d0cb8af14c3bb3898c8ff09cf5a292e40f357b [2023-02-15 18:44:24,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 18:44:24,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 18:44:24,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 18:44:24,388 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 18:44:24,389 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 18:44:24,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array22_pattern.c [2023-02-15 18:44:25,554 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 18:44:25,755 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 18:44:25,756 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array22_pattern.c [2023-02-15 18:44:25,765 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/293ad862e/41f59090741b40efa19298615f12110e/FLAG6383505c1 [2023-02-15 18:44:26,124 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/293ad862e/41f59090741b40efa19298615f12110e [2023-02-15 18:44:26,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 18:44:26,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 18:44:26,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 18:44:26,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 18:44:26,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 18:44:26,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 06:44:26" (1/1) ... [2023-02-15 18:44:26,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bda7677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:44:26, skipping insertion in model container [2023-02-15 18:44:26,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 06:44:26" (1/1) ... [2023-02-15 18:44:26,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 18:44:26,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 18:44:26,306 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array22_pattern.c[1347,1360] [2023-02-15 18:44:26,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 18:44:26,350 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 18:44:26,363 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array22_pattern.c[1347,1360] [2023-02-15 18:44:26,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 18:44:26,402 INFO L208 MainTranslator]: Completed translation [2023-02-15 18:44:26,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:44:26 WrapperNode [2023-02-15 18:44:26,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 18:44:26,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 18:44:26,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 18:44:26,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 18:44:26,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:44:26" (1/1) ... [2023-02-15 18:44:26,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:44:26" (1/1) ... [2023-02-15 18:44:26,448 INFO L138 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 108 [2023-02-15 18:44:26,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 18:44:26,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 18:44:26,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 18:44:26,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 18:44:26,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:44:26" (1/1) ... [2023-02-15 18:44:26,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:44:26" (1/1) ... [2023-02-15 18:44:26,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:44:26" (1/1) ... [2023-02-15 18:44:26,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:44:26" (1/1) ... [2023-02-15 18:44:26,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:44:26" (1/1) ... [2023-02-15 18:44:26,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:44:26" (1/1) ... [2023-02-15 18:44:26,489 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:44:26" (1/1) ... [2023-02-15 18:44:26,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:44:26" (1/1) ... [2023-02-15 18:44:26,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 18:44:26,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 18:44:26,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 18:44:26,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 18:44:26,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:44:26" (1/1) ... [2023-02-15 18:44:26,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 18:44:26,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:44:26,526 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 18:44:26,543 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 18:44:26,557 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2023-02-15 18:44:26,558 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2023-02-15 18:44:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 18:44:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 18:44:26,559 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 18:44:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 18:44:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 18:44:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 18:44:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 18:44:26,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 18:44:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 18:44:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 18:44:26,639 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 18:44:26,641 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 18:44:26,875 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 18:44:26,882 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 18:44:26,882 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2023-02-15 18:44:26,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 06:44:26 BoogieIcfgContainer [2023-02-15 18:44:26,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 18:44:26,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 18:44:26,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 18:44:26,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 18:44:26,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 06:44:26" (1/3) ... [2023-02-15 18:44:26,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1bba1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 06:44:26, skipping insertion in model container [2023-02-15 18:44:26,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:44:26" (2/3) ... [2023-02-15 18:44:26,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1bba1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 06:44:26, skipping insertion in model container [2023-02-15 18:44:26,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 06:44:26" (3/3) ... [2023-02-15 18:44:26,896 INFO L112 eAbstractionObserver]: Analyzing ICFG array22_pattern.c [2023-02-15 18:44:26,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 18:44:26,916 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 18:44:26,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 18:44:26,962 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;@5378d596, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 18:44:26,962 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 18:44:26,965 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 18:44:26,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 18:44:26,971 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:44:26,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:44:26,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:44:26,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:44:26,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1798908762, now seen corresponding path program 1 times [2023-02-15 18:44:26,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:44:26,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060465392] [2023-02-15 18:44:26,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:44:26,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:44:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:44:27,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:44:27,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060465392] [2023-02-15 18:44:27,069 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 18:44:27,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573847300] [2023-02-15 18:44:27,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:44:27,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:44:27,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:44:27,085 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 18:44:27,115 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 18:44:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:44:27,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 18:44:27,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:44:27,210 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 18:44:27,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 18:44:27,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573847300] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 18:44:27,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 18:44:27,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 18:44:27,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528300092] [2023-02-15 18:44:27,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 18:44:27,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 18:44:27,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:44:27,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 18:44:27,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 18:44:27,254 INFO L87 Difference]: Start difference. First operand has 41 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 18:44:27,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:44:27,274 INFO L93 Difference]: Finished difference Result 79 states and 117 transitions. [2023-02-15 18:44:27,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 18:44:27,275 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-02-15 18:44:27,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:44:27,279 INFO L225 Difference]: With dead ends: 79 [2023-02-15 18:44:27,280 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 18:44:27,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 18:44:27,286 INFO L413 NwaCegarLoop]: 51 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, 51 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 [2023-02-15 18:44:27,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 18:44:27,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 18:44:27,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-15 18:44:27,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 18:44:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2023-02-15 18:44:27,329 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 15 [2023-02-15 18:44:27,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:44:27,330 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2023-02-15 18:44:27,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 18:44:27,331 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2023-02-15 18:44:27,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-15 18:44:27,335 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:44:27,336 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:44:27,345 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 18:44:27,544 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 18:44:27,546 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:44:27,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:44:27,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1909329698, now seen corresponding path program 1 times [2023-02-15 18:44:27,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:44:27,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640932997] [2023-02-15 18:44:27,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:44:27,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:44:27,581 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:44:27,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378666337] [2023-02-15 18:44:27,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:44:27,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:44:27,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:44:27,583 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 18:44:27,587 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 18:44:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:44:27,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 18:44:27,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:44:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 18:44:27,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 18:44:27,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:44:27,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640932997] [2023-02-15 18:44:27,786 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:44:27,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378666337] [2023-02-15 18:44:27,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378666337] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 18:44:27,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 18:44:27,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 18:44:27,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522991259] [2023-02-15 18:44:27,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 18:44:27,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 18:44:27,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:44:27,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 18:44:27,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 18:44:27,792 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-15 18:44:27,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:44:27,822 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2023-02-15 18:44:27,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 18:44:27,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2023-02-15 18:44:27,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:44:27,825 INFO L225 Difference]: With dead ends: 44 [2023-02-15 18:44:27,826 INFO L226 Difference]: Without dead ends: 40 [2023-02-15 18:44:27,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 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 18:44:27,828 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 12 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 18:44:27,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 110 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 18:44:27,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-15 18:44:27,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-02-15 18:44:27,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 18:44:27,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2023-02-15 18:44:27,839 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 42 [2023-02-15 18:44:27,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:44:27,840 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2023-02-15 18:44:27,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-15 18:44:27,841 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2023-02-15 18:44:27,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-15 18:44:27,843 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:44:27,843 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:44:27,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-15 18:44:28,049 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 18:44:28,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:44:28,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:44:28,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1786751912, now seen corresponding path program 1 times [2023-02-15 18:44:28,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:44:28,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156203211] [2023-02-15 18:44:28,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:44:28,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:44:28,071 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:44:28,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707788351] [2023-02-15 18:44:28,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:44:28,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:44:28,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:44:28,076 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 18:44:28,077 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 18:44:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:44:28,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 18:44:28,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:44:28,240 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 18:44:28,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 18:44:28,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:44:28,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156203211] [2023-02-15 18:44:28,242 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:44:28,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707788351] [2023-02-15 18:44:28,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707788351] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 18:44:28,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 18:44:28,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 18:44:28,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852430684] [2023-02-15 18:44:28,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 18:44:28,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 18:44:28,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:44:28,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 18:44:28,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 18:44:28,254 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-15 18:44:28,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:44:28,363 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2023-02-15 18:44:28,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 18:44:28,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2023-02-15 18:44:28,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:44:28,366 INFO L225 Difference]: With dead ends: 83 [2023-02-15 18:44:28,367 INFO L226 Difference]: Without dead ends: 50 [2023-02-15 18:44:28,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 18:44:28,368 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 24 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 18:44:28,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 114 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 18:44:28,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-15 18:44:28,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2023-02-15 18:44:28,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 18:44:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2023-02-15 18:44:28,375 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 47 [2023-02-15 18:44:28,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:44:28,376 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2023-02-15 18:44:28,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-15 18:44:28,376 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2023-02-15 18:44:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-15 18:44:28,377 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:44:28,377 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:44:28,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-15 18:44:28,582 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 [2023-02-15 18:44:28,583 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:44:28,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:44:28,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2075657686, now seen corresponding path program 1 times [2023-02-15 18:44:28,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:44:28,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353995285] [2023-02-15 18:44:28,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:44:28,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:44:28,596 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:44:28,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [608903219] [2023-02-15 18:44:28,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:44:28,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:44:28,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:44:28,599 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) [2023-02-15 18:44:28,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 18:44:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:44:28,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 18:44:28,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:44:28,697 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 18:44:28,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 18:44:28,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:44:28,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353995285] [2023-02-15 18:44:28,698 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:44:28,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608903219] [2023-02-15 18:44:28,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608903219] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 18:44:28,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 18:44:28,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 18:44:28,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293071572] [2023-02-15 18:44:28,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 18:44:28,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 18:44:28,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:44:28,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 18:44:28,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 18:44:28,701 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-15 18:44:28,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:44:28,743 INFO L93 Difference]: Finished difference Result 80 states and 103 transitions. [2023-02-15 18:44:28,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 18:44:28,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2023-02-15 18:44:28,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:44:28,744 INFO L225 Difference]: With dead ends: 80 [2023-02-15 18:44:28,744 INFO L226 Difference]: Without dead ends: 44 [2023-02-15 18:44:28,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 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 18:44:28,746 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 30 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 18:44:28,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 77 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 18:44:28,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-15 18:44:28,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2023-02-15 18:44:28,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 18:44:28,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2023-02-15 18:44:28,761 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 50 [2023-02-15 18:44:28,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:44:28,775 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2023-02-15 18:44:28,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-15 18:44:28,775 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2023-02-15 18:44:28,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-15 18:44:28,776 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:44:28,776 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:44:28,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 18:44:28,977 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 [2023-02-15 18:44:28,977 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:44:28,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:44:28,978 INFO L85 PathProgramCache]: Analyzing trace with hash 874891816, now seen corresponding path program 1 times [2023-02-15 18:44:28,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:44:28,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848896863] [2023-02-15 18:44:28,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:44:28,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:44:28,990 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:44:28,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421059217] [2023-02-15 18:44:28,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:44:28,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:44:28,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:44:28,992 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) [2023-02-15 18:44:29,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 18:44:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:44:29,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 18:44:29,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:44:29,122 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 18:44:29,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:44:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 18:44:29,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:44:29,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848896863] [2023-02-15 18:44:29,349 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:44:29,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421059217] [2023-02-15 18:44:29,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421059217] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:44:29,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 18:44:29,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 17 [2023-02-15 18:44:29,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898729572] [2023-02-15 18:44:29,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 18:44:29,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 18:44:29,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:44:29,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 18:44:29,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-02-15 18:44:29,352 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 15 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-02-15 18:44:29,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:44:29,585 INFO L93 Difference]: Finished difference Result 89 states and 110 transitions. [2023-02-15 18:44:29,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 18:44:29,586 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 15 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 52 [2023-02-15 18:44:29,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:44:29,588 INFO L225 Difference]: With dead ends: 89 [2023-02-15 18:44:29,588 INFO L226 Difference]: Without dead ends: 53 [2023-02-15 18:44:29,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2023-02-15 18:44:29,589 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 84 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 18:44:29,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 139 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 18:44:29,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-15 18:44:29,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2023-02-15 18:44:29,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 18:44:29,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2023-02-15 18:44:29,597 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 52 [2023-02-15 18:44:29,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:44:29,598 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2023-02-15 18:44:29,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 15 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-02-15 18:44:29,598 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2023-02-15 18:44:29,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-15 18:44:29,599 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:44:29,599 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:44:29,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 18:44:29,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:44:29,805 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:44:29,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:44:29,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1211966936, now seen corresponding path program 2 times [2023-02-15 18:44:29,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:44:29,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932626216] [2023-02-15 18:44:29,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:44:29,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:44:29,827 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:44:29,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848464405] [2023-02-15 18:44:29,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 18:44:29,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:44:29,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:44:29,841 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 18:44:29,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 18:44:29,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 18:44:29,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:44:29,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 18:44:29,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:44:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-15 18:44:29,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:44:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-15 18:44:30,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:44:30,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932626216] [2023-02-15 18:44:30,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:44:30,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848464405] [2023-02-15 18:44:30,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848464405] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:44:30,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 18:44:30,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-02-15 18:44:30,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27246350] [2023-02-15 18:44:30,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 18:44:30,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 18:44:30,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:44:30,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 18:44:30,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-02-15 18:44:30,069 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-15 18:44:30,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:44:30,243 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2023-02-15 18:44:30,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 18:44:30,244 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2023-02-15 18:44:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:44:30,245 INFO L225 Difference]: With dead ends: 108 [2023-02-15 18:44:30,245 INFO L226 Difference]: Without dead ends: 75 [2023-02-15 18:44:30,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-02-15 18:44:30,246 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 53 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 18:44:30,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 181 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 18:44:30,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-02-15 18:44:30,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2023-02-15 18:44:30,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 18:44:30,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2023-02-15 18:44:30,256 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 56 [2023-02-15 18:44:30,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:44:30,256 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2023-02-15 18:44:30,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-15 18:44:30,257 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2023-02-15 18:44:30,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-15 18:44:30,257 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:44:30,258 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:44:30,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 18:44:30,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:44:30,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:44:30,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:44:30,464 INFO L85 PathProgramCache]: Analyzing trace with hash -511912674, now seen corresponding path program 3 times [2023-02-15 18:44:30,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:44:30,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581599914] [2023-02-15 18:44:30,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:44:30,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:44:30,475 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:44:30,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1757322784] [2023-02-15 18:44:30,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 18:44:30,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:44:30,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:44:30,477 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 18:44:30,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 18:44:33,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-15 18:44:33,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:44:33,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 107 conjunts are in the unsatisfiable core [2023-02-15 18:44:33,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:44:33,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-02-15 18:44:33,299 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 32 treesize of output 31 [2023-02-15 18:44:33,448 INFO L321 Elim1Store]: treesize reduction 66, result has 20.5 percent of original size [2023-02-15 18:44:33,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2023-02-15 18:44:33,576 INFO L321 Elim1Store]: treesize reduction 116, result has 20.5 percent of original size [2023-02-15 18:44:33,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 55 [2023-02-15 18:44:46,536 INFO L321 Elim1Store]: treesize reduction 183, result has 38.0 percent of original size [2023-02-15 18:44:46,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 142 [2023-02-15 18:45:17,972 WARN L233 SmtUtils]: Spent 17.16s on a formula simplification that was a NOOP. DAG size: 126 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 18:45:39,541 WARN L233 SmtUtils]: Spent 18.52s on a formula simplification that was a NOOP. DAG size: 126 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 18:45:41,897 INFO L321 Elim1Store]: treesize reduction 88, result has 43.9 percent of original size [2023-02-15 18:45:41,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 546 treesize of output 563