./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound1.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/nla-digbench-scaling/lcm1_valuebound1.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 79811f3f75422a728dcf7cba820944b1051001d99cca4ad5995b66f045dcf64d --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 03:23:41,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 03:23:41,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 03:23:41,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 03:23:41,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 03:23:41,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 03:23:41,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 03:23:41,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 03:23:41,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 03:23:41,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 03:23:41,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 03:23:41,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 03:23:41,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 03:23:41,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 03:23:41,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 03:23:41,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 03:23:41,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 03:23:41,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 03:23:41,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 03:23:41,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 03:23:41,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 03:23:41,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 03:23:41,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 03:23:41,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 03:23:41,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 03:23:41,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 03:23:41,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 03:23:41,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 03:23:41,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 03:23:41,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 03:23:41,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 03:23:41,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 03:23:41,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 03:23:41,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 03:23:41,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 03:23:41,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 03:23:41,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 03:23:41,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 03:23:41,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 03:23:41,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 03:23:41,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 03:23:41,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 03:23:41,553 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 03:23:41,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 03:23:41,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 03:23:41,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 03:23:41,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 03:23:41,555 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 03:23:41,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 03:23:41,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 03:23:41,556 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 03:23:41,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 03:23:41,556 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 03:23:41,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 03:23:41,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 03:23:41,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 03:23:41,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 03:23:41,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 03:23:41,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 03:23:41,558 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 03:23:41,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 03:23:41,558 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 03:23:41,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 03:23:41,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 03:23:41,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 03:23:41,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 03:23:41,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 03:23:41,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 03:23:41,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 03:23:41,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 03:23:41,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 03:23:41,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 03:23:41,560 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 03:23:41,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 03:23:41,560 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 03:23:41,560 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 03:23:41,560 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 03:23:41,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79811f3f75422a728dcf7cba820944b1051001d99cca4ad5995b66f045dcf64d [2023-02-18 03:23:41,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 03:23:41,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 03:23:41,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 03:23:41,773 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 03:23:41,773 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 03:23:41,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound1.c [2023-02-18 03:23:42,710 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 03:23:42,875 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 03:23:42,875 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound1.c [2023-02-18 03:23:42,880 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92ad3fbf4/4ac2e28fc5f54db59661a73bb9869dcd/FLAGecc409973 [2023-02-18 03:23:42,893 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92ad3fbf4/4ac2e28fc5f54db59661a73bb9869dcd [2023-02-18 03:23:42,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 03:23:42,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 03:23:42,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 03:23:42,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 03:23:42,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 03:23:42,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 03:23:42" (1/1) ... [2023-02-18 03:23:42,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac57005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:23:42, skipping insertion in model container [2023-02-18 03:23:42,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 03:23:42" (1/1) ... [2023-02-18 03:23:42,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 03:23:42,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 03:23:43,013 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/nla-digbench-scaling/lcm1_valuebound1.c[552,565] [2023-02-18 03:23:43,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 03:23:43,033 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 03:23:43,041 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/nla-digbench-scaling/lcm1_valuebound1.c[552,565] [2023-02-18 03:23:43,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 03:23:43,064 INFO L208 MainTranslator]: Completed translation [2023-02-18 03:23:43,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:23:43 WrapperNode [2023-02-18 03:23:43,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 03:23:43,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 03:23:43,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 03:23:43,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 03:23:43,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:23:43" (1/1) ... [2023-02-18 03:23:43,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:23:43" (1/1) ... [2023-02-18 03:23:43,090 INFO L138 Inliner]: procedures = 14, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 66 [2023-02-18 03:23:43,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 03:23:43,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 03:23:43,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 03:23:43,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 03:23:43,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:23:43" (1/1) ... [2023-02-18 03:23:43,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:23:43" (1/1) ... [2023-02-18 03:23:43,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:23:43" (1/1) ... [2023-02-18 03:23:43,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:23:43" (1/1) ... [2023-02-18 03:23:43,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:23:43" (1/1) ... [2023-02-18 03:23:43,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:23:43" (1/1) ... [2023-02-18 03:23:43,103 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:23:43" (1/1) ... [2023-02-18 03:23:43,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:23:43" (1/1) ... [2023-02-18 03:23:43,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 03:23:43,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 03:23:43,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 03:23:43,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 03:23:43,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:23:43" (1/1) ... [2023-02-18 03:23:43,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 03:23:43,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 03:23:43,135 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) [2023-02-18 03:23:43,141 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 [2023-02-18 03:23:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 03:23:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-18 03:23:43,163 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-18 03:23:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 03:23:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 03:23:43,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 03:23:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 03:23:43,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 03:23:43,206 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 03:23:43,207 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 03:23:43,345 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 03:23:43,349 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 03:23:43,349 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-18 03:23:43,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 03:23:43 BoogieIcfgContainer [2023-02-18 03:23:43,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 03:23:43,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 03:23:43,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 03:23:43,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 03:23:43,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 03:23:42" (1/3) ... [2023-02-18 03:23:43,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552705c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 03:23:43, skipping insertion in model container [2023-02-18 03:23:43,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:23:43" (2/3) ... [2023-02-18 03:23:43,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552705c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 03:23:43, skipping insertion in model container [2023-02-18 03:23:43,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 03:23:43" (3/3) ... [2023-02-18 03:23:43,356 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm1_valuebound1.c [2023-02-18 03:23:43,367 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 03:23:43,368 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 03:23:43,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 03:23:43,402 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;@7e9a413a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 03:23:43,402 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 03:23:43,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-18 03:23:43,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-18 03:23:43,411 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 03:23:43,411 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 03:23:43,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 03:23:43,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 03:23:43,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1807347491, now seen corresponding path program 1 times [2023-02-18 03:23:43,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 03:23:43,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928082615] [2023-02-18 03:23:43,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:23:43,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 03:23:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 03:23:43,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 03:23:43,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928082615] [2023-02-18 03:23:43,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 03:23:43,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350045126] [2023-02-18 03:23:43,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:23:43,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:23:43,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 03:23:43,557 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) [2023-02-18 03:23:43,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 03:23:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 03:23:43,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 03:23:43,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 03:23:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-02-18 03:23:43,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 03:23:43,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350045126] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 03:23:43,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 03:23:43,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 03:23:43,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271900646] [2023-02-18 03:23:43,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 03:23:43,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 03:23:43,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 03:23:43,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 03:23:43,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 03:23:43,731 INFO L87 Difference]: Start difference. First operand has 35 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 03:23:43,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 03:23:43,751 INFO L93 Difference]: Finished difference Result 67 states and 115 transitions. [2023-02-18 03:23:43,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 03:23:43,752 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), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2023-02-18 03:23:43,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 03:23:43,757 INFO L225 Difference]: With dead ends: 67 [2023-02-18 03:23:43,757 INFO L226 Difference]: Without dead ends: 31 [2023-02-18 03:23:43,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 03:23:43,765 INFO L413 NwaCegarLoop]: 46 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, 46 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 [2023-02-18 03:23:43,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 03:23:43,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-18 03:23:43,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-02-18 03:23:43,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-18 03:23:43,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2023-02-18 03:23:43,792 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 39 [2023-02-18 03:23:43,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 03:23:43,792 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2023-02-18 03:23:43,793 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), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 03:23:43,793 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2023-02-18 03:23:43,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-18 03:23:43,794 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 03:23:43,794 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 03:23:43,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 03:23:43,995 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 [2023-02-18 03:23:43,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 03:23:43,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 03:23:43,996 INFO L85 PathProgramCache]: Analyzing trace with hash 197197551, now seen corresponding path program 1 times [2023-02-18 03:23:43,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 03:23:43,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288743663] [2023-02-18 03:23:43,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:23:43,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 03:23:44,023 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 03:23:44,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484428910] [2023-02-18 03:23:44,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:23:44,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:23:44,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 03:23:44,026 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) [2023-02-18 03:23:44,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 03:23:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 03:23:44,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-18 03:23:44,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 03:23:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-18 03:23:44,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 03:23:44,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 03:23:44,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288743663] [2023-02-18 03:23:44,193 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 03:23:44,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484428910] [2023-02-18 03:23:44,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484428910] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 03:23:44,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 03:23:44,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-18 03:23:44,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601784527] [2023-02-18 03:23:44,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 03:23:44,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 03:23:44,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 03:23:44,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 03:23:44,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-18 03:23:44,197 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-18 03:23:44,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 03:23:44,397 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2023-02-18 03:23:44,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 03:23:44,397 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2023-02-18 03:23:44,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 03:23:44,398 INFO L225 Difference]: With dead ends: 50 [2023-02-18 03:23:44,399 INFO L226 Difference]: Without dead ends: 48 [2023-02-18 03:23:44,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-18 03:23:44,400 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 24 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 03:23:44,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 113 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 03:23:44,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-02-18 03:23:44,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2023-02-18 03:23:44,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-18 03:23:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2023-02-18 03:23:44,409 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 39 [2023-02-18 03:23:44,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 03:23:44,410 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2023-02-18 03:23:44,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-18 03:23:44,410 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2023-02-18 03:23:44,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-18 03:23:44,411 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 03:23:44,411 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-02-18 03:23:44,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-18 03:23:44,615 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 [2023-02-18 03:23:44,616 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 03:23:44,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 03:23:44,617 INFO L85 PathProgramCache]: Analyzing trace with hash -857401627, now seen corresponding path program 1 times [2023-02-18 03:23:44,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 03:23:44,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887231770] [2023-02-18 03:23:44,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:23:44,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 03:23:44,629 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 03:23:44,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916573793] [2023-02-18 03:23:44,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:23:44,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:23:44,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 03:23:44,631 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) [2023-02-18 03:23:44,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process