./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_reverse_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_reverse_ground.i -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 cce6de3c48d80c64796d0d47269c605ab237c0f177720038579dfa7efd061db0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 09:10:05,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 09:10:05,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 09:10:05,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 09:10:05,492 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 09:10:05,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 09:10:05,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 09:10:05,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 09:10:05,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 09:10:05,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 09:10:05,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 09:10:05,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 09:10:05,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 09:10:05,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 09:10:05,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 09:10:05,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 09:10:05,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 09:10:05,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 09:10:05,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 09:10:05,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 09:10:05,527 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 09:10:05,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 09:10:05,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 09:10:05,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 09:10:05,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 09:10:05,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 09:10:05,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 09:10:05,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 09:10:05,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 09:10:05,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 09:10:05,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 09:10:05,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 09:10:05,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 09:10:05,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 09:10:05,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 09:10:05,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 09:10:05,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 09:10:05,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 09:10:05,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 09:10:05,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 09:10:05,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 09:10:05,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 09:10:05,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 09:10:05,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 09:10:05,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 09:10:05,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 09:10:05,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 09:10:05,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 09:10:05,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 09:10:05,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 09:10:05,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 09:10:05,566 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 09:10:05,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 09:10:05,567 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 09:10:05,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 09:10:05,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 09:10:05,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 09:10:05,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 09:10:05,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 09:10:05,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 09:10:05,568 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 09:10:05,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 09:10:05,569 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 09:10:05,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 09:10:05,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 09:10:05,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 09:10:05,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 09:10:05,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 09:10:05,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 09:10:05,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 09:10:05,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 09:10:05,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 09:10:05,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 09:10:05,571 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 09:10:05,571 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 09:10:05,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 09:10:05,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cce6de3c48d80c64796d0d47269c605ab237c0f177720038579dfa7efd061db0 [2022-07-19 09:10:05,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 09:10:05,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 09:10:05,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 09:10:05,741 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 09:10:05,742 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 09:10:05,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_reverse_ground.i [2022-07-19 09:10:05,780 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6173c85c/3ee1bdbff2a74357a2d673b75325f2ec/FLAGd0af0404b [2022-07-19 09:10:06,156 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 09:10:06,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_reverse_ground.i [2022-07-19 09:10:06,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6173c85c/3ee1bdbff2a74357a2d673b75325f2ec/FLAGd0af0404b [2022-07-19 09:10:06,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6173c85c/3ee1bdbff2a74357a2d673b75325f2ec [2022-07-19 09:10:06,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 09:10:06,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 09:10:06,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 09:10:06,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 09:10:06,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 09:10:06,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:10:06" (1/1) ... [2022-07-19 09:10:06,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e146cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:06, skipping insertion in model container [2022-07-19 09:10:06,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:10:06" (1/1) ... [2022-07-19 09:10:06,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 09:10:06,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 09:10:06,269 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_reverse_ground.i[816,829] [2022-07-19 09:10:06,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 09:10:06,282 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 09:10:06,290 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_reverse_ground.i[816,829] [2022-07-19 09:10:06,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 09:10:06,302 INFO L208 MainTranslator]: Completed translation [2022-07-19 09:10:06,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:06 WrapperNode [2022-07-19 09:10:06,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 09:10:06,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 09:10:06,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 09:10:06,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 09:10:06,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:06" (1/1) ... [2022-07-19 09:10:06,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:06" (1/1) ... [2022-07-19 09:10:06,324 INFO L137 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2022-07-19 09:10:06,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 09:10:06,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 09:10:06,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 09:10:06,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 09:10:06,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:06" (1/1) ... [2022-07-19 09:10:06,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:06" (1/1) ... [2022-07-19 09:10:06,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:06" (1/1) ... [2022-07-19 09:10:06,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:06" (1/1) ... [2022-07-19 09:10:06,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:06" (1/1) ... [2022-07-19 09:10:06,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:06" (1/1) ... [2022-07-19 09:10:06,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:06" (1/1) ... [2022-07-19 09:10:06,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 09:10:06,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 09:10:06,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 09:10:06,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 09:10:06,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:06" (1/1) ... [2022-07-19 09:10:06,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 09:10:06,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:10:06,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 09:10:06,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 09:10:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 09:10:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 09:10:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 09:10:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 09:10:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 09:10:06,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 09:10:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 09:10:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 09:10:06,448 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 09:10:06,449 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 09:10:06,534 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 09:10:06,538 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 09:10:06,539 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-19 09:10:06,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:10:06 BoogieIcfgContainer [2022-07-19 09:10:06,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 09:10:06,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 09:10:06,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 09:10:06,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 09:10:06,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:10:06" (1/3) ... [2022-07-19 09:10:06,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7c508f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:10:06, skipping insertion in model container [2022-07-19 09:10:06,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:06" (2/3) ... [2022-07-19 09:10:06,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7c508f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:10:06, skipping insertion in model container [2022-07-19 09:10:06,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:10:06" (3/3) ... [2022-07-19 09:10:06,546 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_reverse_ground.i [2022-07-19 09:10:06,555 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 09:10:06,555 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 09:10:06,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 09:10:06,589 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1b58a876, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@34945cde [2022-07-19 09:10:06,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 09:10:06,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:06,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 09:10:06,596 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:10:06,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:10:06,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:10:06,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:10:06,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2016449835, now seen corresponding path program 1 times [2022-07-19 09:10:06,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:10:06,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230178389] [2022-07-19 09:10:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:10:06,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:10:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:10:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 09:10:06,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:10:06,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230178389] [2022-07-19 09:10:06,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230178389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 09:10:06,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 09:10:06,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 09:10:06,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320007071] [2022-07-19 09:10:06,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 09:10:06,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 09:10:06,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:10:06,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 09:10:06,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 09:10:06,774 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:06,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:10:06,809 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2022-07-19 09:10:06,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 09:10:06,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-19 09:10:06,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:10:06,818 INFO L225 Difference]: With dead ends: 36 [2022-07-19 09:10:06,819 INFO L226 Difference]: Without dead ends: 18 [2022-07-19 09:10:06,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 09:10:06,824 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 09:10:06,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 28 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 09:10:06,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-19 09:10:06,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2022-07-19 09:10:06,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:06,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-07-19 09:10:06,859 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2022-07-19 09:10:06,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:10:06,859 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-07-19 09:10:06,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:06,860 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-07-19 09:10:06,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-19 09:10:06,860 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:10:06,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:10:06,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 09:10:06,861 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:10:06,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:10:06,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2031054225, now seen corresponding path program 1 times [2022-07-19 09:10:06,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:10:06,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235849691] [2022-07-19 09:10:06,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:10:06,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:10:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:10:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 09:10:06,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:10:06,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235849691] [2022-07-19 09:10:06,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235849691] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:10:06,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915672409] [2022-07-19 09:10:06,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:10:06,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:10:06,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:10:06,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:10:06,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 09:10:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:10:06,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 09:10:06,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:10:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 09:10:07,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 09:10:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 09:10:07,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915672409] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 09:10:07,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 09:10:07,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-19 09:10:07,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962803655] [2022-07-19 09:10:07,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 09:10:07,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 09:10:07,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:10:07,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 09:10:07,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-19 09:10:07,038 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:07,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:10:07,072 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2022-07-19 09:10:07,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 09:10:07,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-19 09:10:07,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:10:07,074 INFO L225 Difference]: With dead ends: 39 [2022-07-19 09:10:07,074 INFO L226 Difference]: Without dead ends: 28 [2022-07-19 09:10:07,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-19 09:10:07,075 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 09:10:07,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 28 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 09:10:07,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-19 09:10:07,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-07-19 09:10:07,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:07,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2022-07-19 09:10:07,080 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 13 [2022-07-19 09:10:07,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:10:07,080 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2022-07-19 09:10:07,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:07,081 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2022-07-19 09:10:07,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-19 09:10:07,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:10:07,081 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:10:07,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 09:10:07,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:10:07,298 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:10:07,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:10:07,299 INFO L85 PathProgramCache]: Analyzing trace with hash -318070331, now seen corresponding path program 2 times [2022-07-19 09:10:07,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:10:07,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533204887] [2022-07-19 09:10:07,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:10:07,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:10:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:10:07,374 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 09:10:07,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:10:07,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533204887] [2022-07-19 09:10:07,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533204887] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:10:07,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478139508] [2022-07-19 09:10:07,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 09:10:07,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:10:07,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:10:07,377 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:10:07,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 09:10:07,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 09:10:07,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 09:10:07,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 09:10:07,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:10:07,453 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 09:10:07,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 09:10:07,504 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 09:10:07,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478139508] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 09:10:07,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 09:10:07,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-07-19 09:10:07,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136318516] [2022-07-19 09:10:07,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 09:10:07,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 09:10:07,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:10:07,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 09:10:07,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-19 09:10:07,507 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:07,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:10:07,590 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2022-07-19 09:10:07,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 09:10:07,591 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-07-19 09:10:07,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:10:07,592 INFO L225 Difference]: With dead ends: 69 [2022-07-19 09:10:07,592 INFO L226 Difference]: Without dead ends: 52 [2022-07-19 09:10:07,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-19 09:10:07,593 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 34 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 09:10:07,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 44 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 09:10:07,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-19 09:10:07,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-07-19 09:10:07,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:07,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2022-07-19 09:10:07,599 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 25 [2022-07-19 09:10:07,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:10:07,599 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2022-07-19 09:10:07,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:07,599 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2022-07-19 09:10:07,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-19 09:10:07,600 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:10:07,600 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:10:07,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 09:10:07,824 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,SelfDestructingSolverStorable2 [2022-07-19 09:10:07,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:10:07,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:10:07,825 INFO L85 PathProgramCache]: Analyzing trace with hash 407457837, now seen corresponding path program 3 times [2022-07-19 09:10:07,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:10:07,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743501954] [2022-07-19 09:10:07,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:10:07,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:10:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:10:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-19 09:10:08,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:10:08,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743501954] [2022-07-19 09:10:08,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743501954] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:10:08,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559730846] [2022-07-19 09:10:08,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 09:10:08,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:10:08,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:10:08,040 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:10:08,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 09:10:08,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 09:10:08,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 09:10:08,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-19 09:10:08,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:10:08,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-19 09:10:08,391 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-07-19 09:10:08,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 09:10:08,530 INFO L356 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2022-07-19 09:10:08,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 23 [2022-07-19 09:10:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-19 09:10:08,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 09:10:08,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559730846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 09:10:08,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 09:10:08,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2022-07-19 09:10:08,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923098280] [2022-07-19 09:10:08,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 09:10:08,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 09:10:08,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:10:08,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 09:10:08,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-07-19 09:10:08,548 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:08,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:10:08,576 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2022-07-19 09:10:08,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 09:10:08,577 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-07-19 09:10:08,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:10:08,578 INFO L225 Difference]: With dead ends: 59 [2022-07-19 09:10:08,578 INFO L226 Difference]: Without dead ends: 57 [2022-07-19 09:10:08,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-07-19 09:10:08,579 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 09:10:08,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 32 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2022-07-19 09:10:08,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-19 09:10:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-07-19 09:10:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:08,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2022-07-19 09:10:08,586 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 49 [2022-07-19 09:10:08,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:10:08,586 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2022-07-19 09:10:08,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2022-07-19 09:10:08,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-19 09:10:08,587 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:10:08,587 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:10:08,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 09:10:08,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:10:08,805 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:10:08,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:10:08,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1048670371, now seen corresponding path program 1 times [2022-07-19 09:10:08,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:10:08,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259240463] [2022-07-19 09:10:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:10:08,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:10:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:10:08,909 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-19 09:10:08,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:10:08,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259240463] [2022-07-19 09:10:08,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259240463] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:10:08,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316436774] [2022-07-19 09:10:08,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:10:08,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:10:08,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:10:08,911 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:10:08,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 09:10:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:10:09,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 09:10:09,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:10:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-19 09:10:09,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 09:10:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-19 09:10:09,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316436774] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 09:10:09,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 09:10:09,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-07-19 09:10:09,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853412827] [2022-07-19 09:10:09,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 09:10:09,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 09:10:09,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:10:09,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 09:10:09,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-07-19 09:10:09,341 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:09,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:10:09,525 INFO L93 Difference]: Finished difference Result 133 states and 160 transitions. [2022-07-19 09:10:09,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 09:10:09,525 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-07-19 09:10:09,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:10:09,529 INFO L225 Difference]: With dead ends: 133 [2022-07-19 09:10:09,530 INFO L226 Difference]: Without dead ends: 102 [2022-07-19 09:10:09,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-07-19 09:10:09,532 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 97 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 09:10:09,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 28 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 09:10:09,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-07-19 09:10:09,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-07-19 09:10:09,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 101 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:09,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2022-07-19 09:10:09,555 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 53 [2022-07-19 09:10:09,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:10:09,555 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2022-07-19 09:10:09,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:09,556 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2022-07-19 09:10:09,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 09:10:09,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:10:09,561 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:10:09,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 09:10:09,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:10:09,775 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:10:09,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:10:09,776 INFO L85 PathProgramCache]: Analyzing trace with hash -109773453, now seen corresponding path program 2 times [2022-07-19 09:10:09,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:10:09,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225823346] [2022-07-19 09:10:09,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:10:09,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:10:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:10:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-07-19 09:10:10,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:10:10,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225823346] [2022-07-19 09:10:10,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225823346] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:10:10,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209114543] [2022-07-19 09:10:10,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 09:10:10,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:10:10,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:10:10,092 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:10:10,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 09:10:10,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 09:10:10,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 09:10:10,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-19 09:10:10,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:10:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-07-19 09:10:10,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 09:10:10,828 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-07-19 09:10:10,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209114543] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 09:10:10,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 09:10:10,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-07-19 09:10:10,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791805953] [2022-07-19 09:10:10,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 09:10:10,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-19 09:10:10,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:10:10,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-19 09:10:10,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-07-19 09:10:10,832 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:11,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:10:11,113 INFO L93 Difference]: Finished difference Result 253 states and 304 transitions. [2022-07-19 09:10:11,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-19 09:10:11,115 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-07-19 09:10:11,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:10:11,116 INFO L225 Difference]: With dead ends: 253 [2022-07-19 09:10:11,116 INFO L226 Difference]: Without dead ends: 198 [2022-07-19 09:10:11,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-07-19 09:10:11,117 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 201 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 09:10:11,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 36 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 09:10:11,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-07-19 09:10:11,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-07-19 09:10:11,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.015228426395939) internal successors, (200), 197 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:11,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 200 transitions. [2022-07-19 09:10:11,130 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 200 transitions. Word has length 101 [2022-07-19 09:10:11,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:10:11,130 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 200 transitions. [2022-07-19 09:10:11,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:11,131 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 200 transitions. [2022-07-19 09:10:11,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-19 09:10:11,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:10:11,132 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:10:11,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 09:10:11,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:10:11,350 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:10:11,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:10:11,350 INFO L85 PathProgramCache]: Analyzing trace with hash -645892333, now seen corresponding path program 3 times [2022-07-19 09:10:11,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:10:11,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966157132] [2022-07-19 09:10:11,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:10:11,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:10:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:10:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2022-07-19 09:10:12,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:10:12,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966157132] [2022-07-19 09:10:12,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966157132] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:10:12,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056140759] [2022-07-19 09:10:12,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 09:10:12,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:10:12,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:10:12,243 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:10:12,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 09:10:12,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-19 09:10:12,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 09:10:12,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-19 09:10:12,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:10:12,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-19 09:10:13,015 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-07-19 09:10:13,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 09:10:13,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2022-07-19 09:10:13,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 09:10:13,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 09:10:13,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 20 [2022-07-19 09:10:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 174 proven. 95 refuted. 0 times theorem prover too weak. 3965 trivial. 0 not checked. [2022-07-19 09:10:13,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 09:10:13,734 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 09:10:13,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 510 treesize of output 474 [2022-07-19 09:10:13,746 INFO L356 Elim1Store]: treesize reduction 39, result has 9.3 percent of original size [2022-07-19 09:10:13,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1820 treesize of output 1528 [2022-07-19 09:10:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2022-07-19 09:10:16,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056140759] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 09:10:16,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 09:10:16,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 12, 11] total 67 [2022-07-19 09:10:16,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028476306] [2022-07-19 09:10:16,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 09:10:16,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-07-19 09:10:16,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:10:16,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-07-19 09:10:16,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1498, Invalid=2924, Unknown=0, NotChecked=0, Total=4422 [2022-07-19 09:10:16,930 INFO L87 Difference]: Start difference. First operand 198 states and 200 transitions. Second operand has 67 states, 67 states have (on average 2.1641791044776117) internal successors, (145), 67 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:22,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:10:22,363 INFO L93 Difference]: Finished difference Result 320 states and 329 transitions. [2022-07-19 09:10:22,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-07-19 09:10:22,363 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.1641791044776117) internal successors, (145), 67 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2022-07-19 09:10:22,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:10:22,364 INFO L225 Difference]: With dead ends: 320 [2022-07-19 09:10:22,364 INFO L226 Difference]: Without dead ends: 217 [2022-07-19 09:10:22,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 421 SyntacticMatches, 3 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12642 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=13255, Invalid=31477, Unknown=0, NotChecked=0, Total=44732 [2022-07-19 09:10:22,375 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 112 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 193 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 09:10:22,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 108 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 235 Invalid, 0 Unknown, 193 Unchecked, 0.4s Time] [2022-07-19 09:10:22,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-07-19 09:10:22,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 208. [2022-07-19 09:10:22,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.0144927536231885) internal successors, (210), 207 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:22,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 210 transitions. [2022-07-19 09:10:22,387 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 210 transitions. Word has length 197 [2022-07-19 09:10:22,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:10:22,388 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 210 transitions. [2022-07-19 09:10:22,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.1641791044776117) internal successors, (145), 67 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:22,388 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 210 transitions. [2022-07-19 09:10:22,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-19 09:10:22,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:10:22,389 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 47, 47, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:10:22,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 09:10:22,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:10:22,607 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:10:22,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:10:22,608 INFO L85 PathProgramCache]: Analyzing trace with hash -97913533, now seen corresponding path program 4 times [2022-07-19 09:10:22,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:10:22,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995176526] [2022-07-19 09:10:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:10:22,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:10:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:10:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4521 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2022-07-19 09:10:23,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:10:23,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995176526] [2022-07-19 09:10:23,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995176526] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:10:23,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359799448] [2022-07-19 09:10:23,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 09:10:23,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:10:23,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:10:23,436 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:10:23,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 09:10:23,624 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 09:10:23,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 09:10:23,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-19 09:10:23,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:10:23,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4521 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2022-07-19 09:10:23,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 09:10:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4521 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2022-07-19 09:10:25,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359799448] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 09:10:25,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 09:10:25,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 99 [2022-07-19 09:10:25,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061000899] [2022-07-19 09:10:25,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 09:10:25,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-07-19 09:10:25,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:10:25,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-07-19 09:10:25,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2022-07-19 09:10:25,789 INFO L87 Difference]: Start difference. First operand 208 states and 210 transitions. Second operand has 99 states, 99 states have (on average 2.090909090909091) internal successors, (207), 99 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:26,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:10:26,879 INFO L93 Difference]: Finished difference Result 513 states and 613 transitions. [2022-07-19 09:10:26,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-07-19 09:10:26,880 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.090909090909091) internal successors, (207), 99 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2022-07-19 09:10:26,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:10:26,881 INFO L225 Difference]: With dead ends: 513 [2022-07-19 09:10:26,881 INFO L226 Difference]: Without dead ends: 402 [2022-07-19 09:10:26,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2022-07-19 09:10:26,883 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 600 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 09:10:26,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 44 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 09:10:26,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-07-19 09:10:26,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2022-07-19 09:10:26,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 1.0074812967581048) internal successors, (404), 401 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:26,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 404 transitions. [2022-07-19 09:10:26,910 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 404 transitions. Word has length 207 [2022-07-19 09:10:26,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:10:26,911 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 404 transitions. [2022-07-19 09:10:26,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.090909090909091) internal successors, (207), 99 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 09:10:26,912 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 404 transitions. [2022-07-19 09:10:26,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2022-07-19 09:10:26,915 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:10:26,918 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 96, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:10:26,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 09:10:27,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:10:27,131 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:10:27,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:10:27,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1887797439, now seen corresponding path program 5 times [2022-07-19 09:10:27,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:10:27,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532732836] [2022-07-19 09:10:27,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:10:27,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:10:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:10:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 18440 backedges. 0 proven. 9216 refuted. 0 times theorem prover too weak. 9224 trivial. 0 not checked. [2022-07-19 09:10:29,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:10:29,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532732836] [2022-07-19 09:10:29,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532732836] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:10:29,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256375048] [2022-07-19 09:10:29,667 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-19 09:10:29,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:10:29,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:10:29,669 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:10:29,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process