./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c --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/float-benchs/zonotope_3.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a7308dc5f86f1f4eda090a45a8f84359680ddfad7d17e2c5273bd494b2cbe5e --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:50:25,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:50:25,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:50:25,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:50:25,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:50:25,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:50:25,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:50:25,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:50:25,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:50:25,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:50:25,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:50:25,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:50:25,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:50:25,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:50:25,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:50:25,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:50:25,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:50:25,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:50:25,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:50:25,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:50:25,494 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:50:25,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:50:25,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:50:25,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:50:25,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:50:25,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:50:25,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:50:25,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:50:25,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:50:25,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:50:25,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:50:25,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:50:25,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:50:25,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:50:25,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:50:25,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:50:25,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:50:25,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:50:25,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:50:25,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:50:25,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:50:25,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:50:25,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 13:50:25,534 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:50:25,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:50:25,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:50:25,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:50:25,537 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:50:25,538 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:50:25,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:50:25,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:50:25,538 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:50:25,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:50:25,539 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:50:25,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 13:50:25,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:50:25,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:50:25,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:50:25,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:50:25,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:50:25,540 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:50:25,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:50:25,541 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:50:25,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:50:25,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:50:25,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:50:25,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:50:25,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:50:25,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:50:25,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:50:25,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:50:25,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 13:50:25,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 13:50:25,543 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:50:25,543 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:50:25,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:50:25,544 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a7308dc5f86f1f4eda090a45a8f84359680ddfad7d17e2c5273bd494b2cbe5e [2022-07-19 13:50:25,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:50:25,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:50:25,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:50:25,779 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:50:25,779 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:50:25,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c [2022-07-19 13:50:25,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3de895e72/c8025de3a8d945b0bb3d30265a23d430/FLAG0fb115784 [2022-07-19 13:50:26,251 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:50:26,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c [2022-07-19 13:50:26,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3de895e72/c8025de3a8d945b0bb3d30265a23d430/FLAG0fb115784 [2022-07-19 13:50:26,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3de895e72/c8025de3a8d945b0bb3d30265a23d430 [2022-07-19 13:50:26,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:50:26,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:50:26,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:50:26,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:50:26,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:50:26,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:50:26" (1/1) ... [2022-07-19 13:50:26,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33cf32ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:50:26, skipping insertion in model container [2022-07-19 13:50:26,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:50:26" (1/1) ... [2022-07-19 13:50:26,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:50:26,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:50:26,908 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/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] [2022-07-19 13:50:26,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:50:26,938 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:50:26,996 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/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] [2022-07-19 13:50:27,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:50:27,015 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:50:27,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:50:27 WrapperNode [2022-07-19 13:50:27,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:50:27,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:50:27,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:50:27,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:50:27,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:50:27" (1/1) ... [2022-07-19 13:50:27,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:50:27" (1/1) ... [2022-07-19 13:50:27,075 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 548 [2022-07-19 13:50:27,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:50:27,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:50:27,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:50:27,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:50:27,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:50:27" (1/1) ... [2022-07-19 13:50:27,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:50:27" (1/1) ... [2022-07-19 13:50:27,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:50:27" (1/1) ... [2022-07-19 13:50:27,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:50:27" (1/1) ... [2022-07-19 13:50:27,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:50:27" (1/1) ... [2022-07-19 13:50:27,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:50:27" (1/1) ... [2022-07-19 13:50:27,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:50:27" (1/1) ... [2022-07-19 13:50:27,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:50:27,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:50:27,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:50:27,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:50:27,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:50:27" (1/1) ... [2022-07-19 13:50:27,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:50:27,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:50:27,168 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 13:50:27,185 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 13:50:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:50:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 13:50:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:50:27,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:50:27,320 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:50:27,321 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:50:27,686 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:50:27,691 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:50:27,691 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:50:27,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:50:27 BoogieIcfgContainer [2022-07-19 13:50:27,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:50:27,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:50:27,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:50:27,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:50:27,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:50:26" (1/3) ... [2022-07-19 13:50:27,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78382567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:50:27, skipping insertion in model container [2022-07-19 13:50:27,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:50:27" (2/3) ... [2022-07-19 13:50:27,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78382567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:50:27, skipping insertion in model container [2022-07-19 13:50:27,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:50:27" (3/3) ... [2022-07-19 13:50:27,700 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.v+lhb-reducer.c [2022-07-19 13:50:27,710 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:50:27,711 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:50:27,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:50:27,768 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@5a477b7b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@24e4570e [2022-07-19 13:50:27,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:50:27,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 52 states have (on average 1.8461538461538463) internal successors, (96), 53 states have internal predecessors, (96), 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 13:50:27,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 13:50:27,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:50:27,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:50:27,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:50:27,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:50:27,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1627818147, now seen corresponding path program 1 times [2022-07-19 13:50:27,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:50:27,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694593458] [2022-07-19 13:50:27,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:50:27,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:50:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:50:28,065 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 13:50:28,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:50:28,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694593458] [2022-07-19 13:50:28,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694593458] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:50:28,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:50:28,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 13:50:28,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306427006] [2022-07-19 13:50:28,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:50:28,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 13:50:28,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:50:28,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 13:50:28,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 13:50:28,092 INFO L87 Difference]: Start difference. First operand has 54 states, 52 states have (on average 1.8461538461538463) internal successors, (96), 53 states have internal predecessors, (96), 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 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 13:50:28,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:50:28,140 INFO L93 Difference]: Finished difference Result 70 states and 109 transitions. [2022-07-19 13:50:28,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 13:50:28,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 45 [2022-07-19 13:50:28,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:50:28,148 INFO L225 Difference]: With dead ends: 70 [2022-07-19 13:50:28,148 INFO L226 Difference]: Without dead ends: 51 [2022-07-19 13:50:28,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 13:50:28,152 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 97 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:50:28,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 285 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:50:28,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-07-19 13:50:28,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-07-19 13:50:28,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.08) internal successors, (54), 50 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 13:50:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2022-07-19 13:50:28,176 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 45 [2022-07-19 13:50:28,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:50:28,177 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2022-07-19 13:50:28,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 13:50:28,177 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2022-07-19 13:50:28,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 13:50:28,178 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:50:28,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:50:28,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 13:50:28,178 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:50:28,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:50:28,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1610807486, now seen corresponding path program 1 times [2022-07-19 13:50:28,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:50:28,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817470586] [2022-07-19 13:50:28,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:50:28,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:50:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:50:28,367 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 13:50:28,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:50:28,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817470586] [2022-07-19 13:50:28,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817470586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:50:28,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:50:28,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 13:50:28,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199206848] [2022-07-19 13:50:28,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:50:28,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 13:50:28,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:50:28,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 13:50:28,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-19 13:50:28,372 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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 13:50:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:50:28,432 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2022-07-19 13:50:28,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 13:50:28,432 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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 45 [2022-07-19 13:50:28,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:50:28,436 INFO L225 Difference]: With dead ends: 64 [2022-07-19 13:50:28,436 INFO L226 Difference]: Without dead ends: 57 [2022-07-19 13:50:28,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-19 13:50:28,440 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 54 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:50:28,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 116 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:50:28,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-19 13:50:28,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2022-07-19 13:50:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 52 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 13:50:28,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2022-07-19 13:50:28,451 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 45 [2022-07-19 13:50:28,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:50:28,452 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2022-07-19 13:50:28,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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 13:50:28,453 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2022-07-19 13:50:28,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-19 13:50:28,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:50:28,456 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:50:28,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 13:50:28,458 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:50:28,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:50:28,464 INFO L85 PathProgramCache]: Analyzing trace with hash -234002152, now seen corresponding path program 1 times [2022-07-19 13:50:28,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:50:28,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217557324] [2022-07-19 13:50:28,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:50:28,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:50:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:50:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:50:28,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:50:28,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217557324] [2022-07-19 13:50:28,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217557324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:50:28,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:50:28,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:50:28,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295412230] [2022-07-19 13:50:28,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:50:28,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:50:28,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:50:28,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:50:28,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:50:28,544 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 13:50:28,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:50:28,556 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2022-07-19 13:50:28,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:50:28,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2022-07-19 13:50:28,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:50:28,558 INFO L225 Difference]: With dead ends: 67 [2022-07-19 13:50:28,558 INFO L226 Difference]: Without dead ends: 52 [2022-07-19 13:50:28,560 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 13:50:28,563 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:50:28,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:50:28,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-19 13:50:28,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-07-19 13:50:28,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 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 13:50:28,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2022-07-19 13:50:28,572 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 50 [2022-07-19 13:50:28,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:50:28,573 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2022-07-19 13:50:28,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 13:50:28,574 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2022-07-19 13:50:28,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-19 13:50:28,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:50:28,574 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:50:28,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 13:50:28,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:50:28,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:50:28,575 INFO L85 PathProgramCache]: Analyzing trace with hash -686591427, now seen corresponding path program 1 times [2022-07-19 13:50:28,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:50:28,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998782582] [2022-07-19 13:50:28,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:50:28,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:50:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:50:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:50:28,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:50:28,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998782582] [2022-07-19 13:50:28,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998782582] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 13:50:28,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932739987] [2022-07-19 13:50:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:50:28,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 13:50:28,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:50:28,732 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 13:50:28,733 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 13:50:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:50:28,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 13:50:28,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:50:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:50:28,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 13:50:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:50:29,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932739987] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 13:50:29,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 13:50:29,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-07-19 13:50:29,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293165652] [2022-07-19 13:50:29,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 13:50:29,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 13:50:29,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:50:29,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 13:50:29,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-07-19 13:50:29,127 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 25 states, 25 states have (on average 3.96) internal successors, (99), 25 states have internal predecessors, (99), 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 13:50:29,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:50:29,202 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2022-07-19 13:50:29,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 13:50:29,203 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.96) internal successors, (99), 25 states have internal predecessors, (99), 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 50 [2022-07-19 13:50:29,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:50:29,204 INFO L225 Difference]: With dead ends: 119 [2022-07-19 13:50:29,204 INFO L226 Difference]: Without dead ends: 112 [2022-07-19 13:50:29,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 88 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 13:50:29,205 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 183 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 13:50:29,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 150 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 13:50:29,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-07-19 13:50:29,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-07-19 13:50:29,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 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 13:50:29,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2022-07-19 13:50:29,211 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 50 [2022-07-19 13:50:29,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:50:29,211 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2022-07-19 13:50:29,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.96) internal successors, (99), 25 states have internal predecessors, (99), 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 13:50:29,211 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2022-07-19 13:50:29,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-19 13:50:29,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:50:29,212 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:50:29,230 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 13:50:29,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 13:50:29,430 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:50:29,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:50:29,431 INFO L85 PathProgramCache]: Analyzing trace with hash 723240189, now seen corresponding path program 2 times [2022-07-19 13:50:29,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:50:29,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150743368] [2022-07-19 13:50:29,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:50:29,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:50:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:50:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:50:29,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:50:29,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150743368] [2022-07-19 13:50:29,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150743368] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 13:50:29,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021573496] [2022-07-19 13:50:29,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 13:50:29,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 13:50:29,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:50:29,750 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 13:50:29,751 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 13:50:29,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 13:50:29,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 13:50:29,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-19 13:50:29,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:50:30,116 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:50:30,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 13:50:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:50:30,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021573496] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 13:50:30,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 13:50:30,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-07-19 13:50:30,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348373285] [2022-07-19 13:50:30,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 13:50:30,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-19 13:50:30,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:50:30,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-19 13:50:30,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-07-19 13:50:30,790 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 49 states, 49 states have (on average 4.469387755102041) internal successors, (219), 49 states have internal predecessors, (219), 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 13:50:30,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:50:30,968 INFO L93 Difference]: Finished difference Result 239 states and 264 transitions. [2022-07-19 13:50:30,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-19 13:50:30,968 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.469387755102041) internal successors, (219), 49 states have internal predecessors, (219), 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 110 [2022-07-19 13:50:30,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:50:30,969 INFO L225 Difference]: With dead ends: 239 [2022-07-19 13:50:30,970 INFO L226 Difference]: Without dead ends: 232 [2022-07-19 13:50:30,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 196 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 13:50:30,971 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 379 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 13:50:30,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 219 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 13:50:30,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-19 13:50:30,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2022-07-19 13:50:30,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.0086580086580086) internal successors, (233), 231 states have internal predecessors, (233), 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 13:50:30,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2022-07-19 13:50:30,982 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 110 [2022-07-19 13:50:30,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:50:30,983 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2022-07-19 13:50:30,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.469387755102041) internal successors, (219), 49 states have internal predecessors, (219), 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 13:50:30,983 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2022-07-19 13:50:30,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-19 13:50:30,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:50:30,985 INFO L195 NwaCegarLoop]: trace histogram [38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:50:31,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 13:50:31,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 13:50:31,205 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:50:31,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:50:31,205 INFO L85 PathProgramCache]: Analyzing trace with hash -54490499, now seen corresponding path program 3 times [2022-07-19 13:50:31,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:50:31,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586816696] [2022-07-19 13:50:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:50:31,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:50:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:50:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:50:32,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:50:32,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586816696] [2022-07-19 13:50:32,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586816696] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 13:50:32,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420175112] [2022-07-19 13:50:32,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 13:50:32,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 13:50:32,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:50:32,123 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 13:50:32,124 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 13:50:32,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2022-07-19 13:50:32,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 13:50:32,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 2026 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-19 13:50:32,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:50:32,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:50:32,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 13:50:34,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:50:34,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420175112] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 13:50:34,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 13:50:34,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2022-07-19 13:50:34,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536612599] [2022-07-19 13:50:34,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 13:50:34,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-07-19 13:50:34,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:50:34,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-07-19 13:50:34,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-07-19 13:50:34,928 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand has 97 states, 97 states have (on average 4.731958762886598) internal successors, (459), 97 states have internal predecessors, (459), 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 13:50:35,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:50:35,326 INFO L93 Difference]: Finished difference Result 479 states and 528 transitions. [2022-07-19 13:50:35,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-07-19 13:50:35,326 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 4.731958762886598) internal successors, (459), 97 states have internal predecessors, (459), 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 230 [2022-07-19 13:50:35,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:50:35,328 INFO L225 Difference]: With dead ends: 479 [2022-07-19 13:50:35,328 INFO L226 Difference]: Without dead ends: 472 [2022-07-19 13:50:35,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-07-19 13:50:35,330 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 804 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 13:50:35,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 377 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 13:50:35,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-07-19 13:50:35,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2022-07-19 13:50:35,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 1.0042462845010616) internal successors, (473), 471 states have internal predecessors, (473), 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 13:50:35,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 473 transitions. [2022-07-19 13:50:35,347 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 473 transitions. Word has length 230 [2022-07-19 13:50:35,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:50:35,348 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 473 transitions. [2022-07-19 13:50:35,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 4.731958762886598) internal successors, (459), 97 states have internal predecessors, (459), 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 13:50:35,348 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 473 transitions. [2022-07-19 13:50:35,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-07-19 13:50:35,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:50:35,351 INFO L195 NwaCegarLoop]: trace histogram [86, 85, 85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:50:35,371 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 13:50:35,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 13:50:35,571 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:50:35,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:50:35,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1315269251, now seen corresponding path program 4 times [2022-07-19 13:50:35,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:50:35,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255265901] [2022-07-19 13:50:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:50:35,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:50:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:50:38,444 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:50:38,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:50:38,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255265901] [2022-07-19 13:50:38,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255265901] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 13:50:38,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825519242] [2022-07-19 13:50:38,445 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 13:50:38,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 13:50:38,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:50:38,451 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 13:50:38,452 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 13:50:39,031 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 13:50:39,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 13:50:39,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 4042 conjuncts, 96 conjunts are in the unsatisfiable core [2022-07-19 13:50:39,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:50:39,516 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:50:39,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 13:50:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:50:46,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825519242] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 13:50:46,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 13:50:46,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2022-07-19 13:50:46,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823228366] [2022-07-19 13:50:46,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 13:50:46,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2022-07-19 13:50:46,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:50:46,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2022-07-19 13:50:46,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2022-07-19 13:50:46,768 INFO L87 Difference]: Start difference. First operand 472 states and 473 transitions. Second operand has 193 states, 193 states have (on average 4.865284974093265) internal successors, (939), 193 states have internal predecessors, (939), 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 13:50:48,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:50:48,271 INFO L93 Difference]: Finished difference Result 959 states and 1056 transitions. [2022-07-19 13:50:48,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-07-19 13:50:48,271 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 4.865284974093265) internal successors, (939), 193 states have internal predecessors, (939), 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 470 [2022-07-19 13:50:48,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:50:48,290 INFO L225 Difference]: With dead ends: 959 [2022-07-19 13:50:48,291 INFO L226 Difference]: Without dead ends: 952 [2022-07-19 13:50:48,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 844 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2022-07-19 13:50:48,294 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2510 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2510 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 13:50:48,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2510 Valid, 651 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 13:50:48,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-07-19 13:50:48,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 952. [2022-07-19 13:50:48,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 951 states have (on average 1.0021030494216614) internal successors, (953), 951 states have internal predecessors, (953), 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 13:50:48,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 953 transitions. [2022-07-19 13:50:48,328 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 953 transitions. Word has length 470 [2022-07-19 13:50:48,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:50:48,328 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 953 transitions. [2022-07-19 13:50:48,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 4.865284974093265) internal successors, (939), 193 states have internal predecessors, (939), 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 13:50:48,329 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 953 transitions. [2022-07-19 13:50:48,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2022-07-19 13:50:48,342 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:50:48,342 INFO L195 NwaCegarLoop]: trace histogram [182, 181, 181, 181, 181, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:50:48,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-19 13:50:48,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 13:50:48,565 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:50:48,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:50:48,565 INFO L85 PathProgramCache]: Analyzing trace with hash 2073078653, now seen corresponding path program 5 times [2022-07-19 13:50:48,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:50:48,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32276919] [2022-07-19 13:50:48,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:50:48,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:50:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:50:57,586 INFO L134 CoverageAnalysis]: Checked inductivity of 81812 backedges. 0 proven. 81812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:50:57,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:50:57,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32276919] [2022-07-19 13:50:57,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32276919] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 13:50:57,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231948074] [2022-07-19 13:50:57,587 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-19 13:50:57,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 13:50:57,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:50:57,608 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 13:50:57,637 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 13:51:00,496 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 182 check-sat command(s) [2022-07-19 13:51:00,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 13:51:00,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 8074 conjuncts, 192 conjunts are in the unsatisfiable core [2022-07-19 13:51:00,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:51:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 81812 backedges. 0 proven. 81812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:51:01,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 13:51:23,431 INFO L134 CoverageAnalysis]: Checked inductivity of 81812 backedges. 0 proven. 81812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:51:23,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231948074] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 13:51:23,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 13:51:23,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193, 193] total 385 [2022-07-19 13:51:23,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326159678] [2022-07-19 13:51:23,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 13:51:23,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2022-07-19 13:51:23,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:51:23,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2022-07-19 13:51:23,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2022-07-19 13:51:23,461 INFO L87 Difference]: Start difference. First operand 952 states and 953 transitions. Second operand has 385 states, 385 states have (on average 4.932467532467532) internal successors, (1899), 385 states have internal predecessors, (1899), 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 13:51:30,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:51:30,387 INFO L93 Difference]: Finished difference Result 1919 states and 2112 transitions. [2022-07-19 13:51:30,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-07-19 13:51:30,388 INFO L78 Accepts]: Start accepts. Automaton has has 385 states, 385 states have (on average 4.932467532467532) internal successors, (1899), 385 states have internal predecessors, (1899), 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 950 [2022-07-19 13:51:30,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:51:30,393 INFO L225 Difference]: With dead ends: 1919 [2022-07-19 13:51:30,394 INFO L226 Difference]: Without dead ends: 1912 [2022-07-19 13:51:30,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2091 GetRequests, 1708 SyntacticMatches, 0 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2022-07-19 13:51:30,400 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2662 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 822 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2662 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 822 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 13:51:30,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2662 Valid, 1239 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [822 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 13:51:30,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2022-07-19 13:51:30,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1912. [2022-07-19 13:51:30,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 1.0010465724751438) internal successors, (1913), 1911 states have internal predecessors, (1913), 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 13:51:30,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 1913 transitions. [2022-07-19 13:51:30,436 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 1913 transitions. Word has length 950 [2022-07-19 13:51:30,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:51:30,437 INFO L495 AbstractCegarLoop]: Abstraction has 1912 states and 1913 transitions. [2022-07-19 13:51:30,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 385 states, 385 states have (on average 4.932467532467532) internal successors, (1899), 385 states have internal predecessors, (1899), 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 13:51:30,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 1913 transitions. [2022-07-19 13:51:30,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1911 [2022-07-19 13:51:30,470 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:51:30,471 INFO L195 NwaCegarLoop]: trace histogram [374, 373, 373, 373, 373, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:51:30,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-19 13:51:30,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 13:51:30,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:51:30,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:51:30,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1619318653, now seen corresponding path program 6 times [2022-07-19 13:51:30,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:51:30,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308391011] [2022-07-19 13:51:30,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:51:30,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:51:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:52:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 347636 backedges. 0 proven. 347636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:52:03,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:52:03,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308391011] [2022-07-19 13:52:03,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308391011] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 13:52:03,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878917716] [2022-07-19 13:52:03,600 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-19 13:52:03,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 13:52:03,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:52:03,604 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 13:52:03,605 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 13:52:16,502 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 374 check-sat command(s) [2022-07-19 13:52:16,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 13:52:16,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 16138 conjuncts, 384 conjunts are in the unsatisfiable core [2022-07-19 13:52:16,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:52:18,220 INFO L134 CoverageAnalysis]: Checked inductivity of 347636 backedges. 0 proven. 347636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:52:18,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 13:53:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 347636 backedges. 0 proven. 347636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:53:46,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878917716] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 13:53:46,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 13:53:46,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [385, 385, 385] total 769 [2022-07-19 13:53:46,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526480180] [2022-07-19 13:53:46,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 13:53:46,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 769 states [2022-07-19 13:53:46,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:53:46,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 769 interpolants. [2022-07-19 13:53:46,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295296, Invalid=295296, Unknown=0, NotChecked=0, Total=590592 [2022-07-19 13:53:46,609 INFO L87 Difference]: Start difference. First operand 1912 states and 1913 transitions. Second operand has 769 states, 769 states have (on average 4.9661898569570875) internal successors, (3819), 769 states have internal predecessors, (3819), 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 13:54:56,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:54:56,793 INFO L93 Difference]: Finished difference Result 3839 states and 4224 transitions. [2022-07-19 13:54:56,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2022-07-19 13:54:56,795 INFO L78 Accepts]: Start accepts. Automaton has has 769 states, 769 states have (on average 4.9661898569570875) internal successors, (3819), 769 states have internal predecessors, (3819), 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 1910 [2022-07-19 13:54:56,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:54:56,806 INFO L225 Difference]: With dead ends: 3839 [2022-07-19 13:54:56,806 INFO L226 Difference]: Without dead ends: 3832 [2022-07-19 13:54:56,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4203 GetRequests, 3436 SyntacticMatches, 0 SemanticMatches, 767 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1528 ImplicationChecksByTransitivity, 117.1s TimeCoverageRelationStatistics Valid=295296, Invalid=295296, Unknown=0, NotChecked=0, Total=590592 [2022-07-19 13:54:56,831 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 4729 mSDsluCounter, 2356 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 1198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4729 SdHoareTripleChecker+Valid, 2387 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1198 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 13:54:56,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4729 Valid, 2387 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1198 Valid, 1578 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 13:54:56,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2022-07-19 13:54:56,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 3832. [2022-07-19 13:54:56,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3832 states, 3831 states have (on average 1.0005220569042026) internal successors, (3833), 3831 states have internal predecessors, (3833), 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 13:54:56,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3832 states to 3832 states and 3833 transitions. [2022-07-19 13:54:56,897 INFO L78 Accepts]: Start accepts. Automaton has 3832 states and 3833 transitions. Word has length 1910 [2022-07-19 13:54:56,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:54:56,899 INFO L495 AbstractCegarLoop]: Abstraction has 3832 states and 3833 transitions. [2022-07-19 13:54:56,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 769 states, 769 states have (on average 4.9661898569570875) internal successors, (3819), 769 states have internal predecessors, (3819), 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 13:54:56,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3832 states and 3833 transitions. [2022-07-19 13:54:57,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3831 [2022-07-19 13:54:57,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:54:57,018 INFO L195 NwaCegarLoop]: trace histogram [758, 757, 757, 757, 757, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:54:57,062 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 13:54:57,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 13:54:57,228 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:54:57,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:54:57,228 INFO L85 PathProgramCache]: Analyzing trace with hash -292737155, now seen corresponding path program 7 times [2022-07-19 13:54:57,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:54:57,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427669330] [2022-07-19 13:54:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:54:57,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:54:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat