./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.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 42b0614d1b870e5abae2e6c908c15eb732e05fe5 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 06:34:22,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 06:34:22,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 06:34:22,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 06:34:22,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 06:34:22,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 06:34:22,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 06:34:22,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 06:34:22,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 06:34:22,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 06:34:22,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 06:34:22,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 06:34:22,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 06:34:22,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 06:34:22,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 06:34:22,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 06:34:22,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 06:34:22,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 06:34:22,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 06:34:22,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 06:34:22,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 06:34:22,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 06:34:22,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 06:34:22,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 06:34:22,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 06:34:22,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 06:34:22,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 06:34:22,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 06:34:22,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 06:34:22,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 06:34:22,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 06:34:22,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 06:34:22,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 06:34:22,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 06:34:22,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 06:34:22,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 06:34:22,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 06:34:22,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 06:34:22,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 06:34:22,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 06:34:22,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 06:34:22,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 06:34:22,309 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 06:34:22,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 06:34:22,309 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 06:34:22,310 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 06:34:22,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 06:34:22,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 06:34:22,311 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 06:34:22,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 06:34:22,311 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 06:34:22,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 06:34:22,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 06:34:22,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 06:34:22,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 06:34:22,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 06:34:22,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 06:34:22,312 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 06:34:22,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 06:34:22,313 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 06:34:22,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 06:34:22,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 06:34:22,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 06:34:22,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 06:34:22,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:34:22,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 06:34:22,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 06:34:22,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 06:34:22,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 06:34:22,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 06:34:22,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 06:34:22,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 06:34:22,314 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42b0614d1b870e5abae2e6c908c15eb732e05fe5 [2021-08-26 06:34:22,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 06:34:22,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 06:34:22,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 06:34:22,521 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 06:34:22,521 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 06:34:22,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c [2021-08-26 06:34:22,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b377ba799/2ce7a5fd935e4e92ba3ad9a478de48d4/FLAGd661e4e89 [2021-08-26 06:34:22,902 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 06:34:22,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c [2021-08-26 06:34:22,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b377ba799/2ce7a5fd935e4e92ba3ad9a478de48d4/FLAGd661e4e89 [2021-08-26 06:34:23,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b377ba799/2ce7a5fd935e4e92ba3ad9a478de48d4 [2021-08-26 06:34:23,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 06:34:23,332 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 06:34:23,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 06:34:23,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 06:34:23,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 06:34:23,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:34:23" (1/1) ... [2021-08-26 06:34:23,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@456f8379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:23, skipping insertion in model container [2021-08-26 06:34:23,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:34:23" (1/1) ... [2021-08-26 06:34:23,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 06:34:23,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 06:34:23,447 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c[545,558] [2021-08-26 06:34:23,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:34:23,462 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 06:34:23,470 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c[545,558] [2021-08-26 06:34:23,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:34:23,511 INFO L208 MainTranslator]: Completed translation [2021-08-26 06:34:23,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:23 WrapperNode [2021-08-26 06:34:23,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 06:34:23,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 06:34:23,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 06:34:23,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 06:34:23,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:23" (1/1) ... [2021-08-26 06:34:23,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:23" (1/1) ... [2021-08-26 06:34:23,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 06:34:23,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 06:34:23,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 06:34:23,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 06:34:23,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:23" (1/1) ... [2021-08-26 06:34:23,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:23" (1/1) ... [2021-08-26 06:34:23,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:23" (1/1) ... [2021-08-26 06:34:23,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:23" (1/1) ... [2021-08-26 06:34:23,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:23" (1/1) ... [2021-08-26 06:34:23,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:23" (1/1) ... [2021-08-26 06:34:23,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:23" (1/1) ... [2021-08-26 06:34:23,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 06:34:23,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 06:34:23,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 06:34:23,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 06:34:23,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:23" (1/1) ... [2021-08-26 06:34:23,562 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:34:23,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:34:23,607 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) [2021-08-26 06:34:23,670 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 [2021-08-26 06:34:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 06:34:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 06:34:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 06:34:23,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 06:34:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-08-26 06:34:23,989 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 06:34:23,989 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-08-26 06:34:23,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:34:23 BoogieIcfgContainer [2021-08-26 06:34:23,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 06:34:23,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 06:34:23,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 06:34:23,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 06:34:23,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:34:23" (1/3) ... [2021-08-26 06:34:23,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5b81b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:34:23, skipping insertion in model container [2021-08-26 06:34:23,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:23" (2/3) ... [2021-08-26 06:34:23,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5b81b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:34:23, skipping insertion in model container [2021-08-26 06:34:23,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:34:23" (3/3) ... [2021-08-26 06:34:23,996 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound1.c [2021-08-26 06:34:23,999 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 06:34:23,999 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-26 06:34:24,026 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 06:34:24,030 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 06:34:24,030 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-26 06:34:24,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 40 states have internal predecessors, (55), 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) [2021-08-26 06:34:24,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 06:34:24,042 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:34:24,043 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:34:24,043 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 06:34:24,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:34:24,047 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2021-08-26 06:34:24,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:34:24,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708593453] [2021-08-26 06:34:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:34:24,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:34:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:34:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:34:24,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:34:24,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708593453] [2021-08-26 06:34:24,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708593453] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:34:24,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:34:24,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 06:34:24,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791522597] [2021-08-26 06:34:24,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 06:34:24,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:34:24,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 06:34:24,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:34:24,149 INFO L87 Difference]: Start difference. First operand has 41 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 40 states have internal predecessors, (55), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-08-26 06:34:24,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:34:24,160 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2021-08-26 06:34:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 06:34:24,161 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-08-26 06:34:24,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:34:24,166 INFO L225 Difference]: With dead ends: 79 [2021-08-26 06:34:24,166 INFO L226 Difference]: Without dead ends: 37 [2021-08-26 06:34:24,167 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:34:24,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-26 06:34:24,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-26 06:34:24,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 36 states have internal predecessors, (41), 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) [2021-08-26 06:34:24,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-08-26 06:34:24,200 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2021-08-26 06:34:24,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:34:24,201 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-08-26 06:34:24,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-08-26 06:34:24,202 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-08-26 06:34:24,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 06:34:24,202 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:34:24,202 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:34:24,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 06:34:24,203 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 06:34:24,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:34:24,206 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-08-26 06:34:24,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:34:24,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648982223] [2021-08-26 06:34:24,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:34:24,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:34:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:34:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:34:24,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:34:24,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648982223] [2021-08-26 06:34:24,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648982223] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:34:24,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:34:24,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 06:34:24,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413641920] [2021-08-26 06:34:24,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 06:34:24,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:34:24,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 06:34:24,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 06:34:24,305 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-08-26 06:34:24,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:34:24,371 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-08-26 06:34:24,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 06:34:24,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-08-26 06:34:24,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:34:24,372 INFO L225 Difference]: With dead ends: 61 [2021-08-26 06:34:24,372 INFO L226 Difference]: Without dead ends: 59 [2021-08-26 06:34:24,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:34:24,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-08-26 06:34:24,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2021-08-26 06:34:24,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 34 states have internal predecessors, (39), 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) [2021-08-26 06:34:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-08-26 06:34:24,377 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2021-08-26 06:34:24,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:34:24,377 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-08-26 06:34:24,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-08-26 06:34:24,377 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-08-26 06:34:24,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 06:34:24,378 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:34:24,378 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:34:24,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 06:34:24,378 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 06:34:24,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:34:24,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2021-08-26 06:34:24,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:34:24,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323635594] [2021-08-26 06:34:24,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:34:24,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:34:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:34:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:34:24,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:34:24,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323635594] [2021-08-26 06:34:24,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323635594] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:34:24,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:34:24,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 06:34:24,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251470978] [2021-08-26 06:34:24,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 06:34:24,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:34:24,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 06:34:24,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 06:34:24,408 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-08-26 06:34:24,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:34:24,425 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2021-08-26 06:34:24,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 06:34:24,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2021-08-26 06:34:24,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:34:24,426 INFO L225 Difference]: With dead ends: 56 [2021-08-26 06:34:24,426 INFO L226 Difference]: Without dead ends: 37 [2021-08-26 06:34:24,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 06:34:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-26 06:34:24,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-26 06:34:24,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 36 states have internal predecessors, (41), 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) [2021-08-26 06:34:24,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-08-26 06:34:24,431 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2021-08-26 06:34:24,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:34:24,431 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-08-26 06:34:24,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-08-26 06:34:24,431 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-08-26 06:34:24,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 06:34:24,432 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:34:24,432 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:34:24,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 06:34:24,432 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 06:34:24,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:34:24,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2021-08-26 06:34:24,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:34:24,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603248471] [2021-08-26 06:34:24,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:34:24,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:34:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:34:24,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:34:24,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:34:24,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603248471] [2021-08-26 06:34:24,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603248471] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:34:24,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:34:24,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 06:34:24,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232104635] [2021-08-26 06:34:24,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 06:34:24,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:34:24,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 06:34:24,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 06:34:24,485 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-08-26 06:34:24,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:34:24,532 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2021-08-26 06:34:24,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 06:34:24,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-08-26 06:34:24,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:34:24,533 INFO L225 Difference]: With dead ends: 56 [2021-08-26 06:34:24,533 INFO L226 Difference]: Without dead ends: 54 [2021-08-26 06:34:24,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:34:24,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-08-26 06:34:24,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2021-08-26 06:34:24,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.3) internal successors, (39), 34 states have internal predecessors, (39), 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) [2021-08-26 06:34:24,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-08-26 06:34:24,538 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2021-08-26 06:34:24,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:34:24,538 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-08-26 06:34:24,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-08-26 06:34:24,538 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-08-26 06:34:24,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 06:34:24,539 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:34:24,539 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:34:24,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 06:34:24,539 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 06:34:24,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:34:24,540 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2021-08-26 06:34:24,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:34:24,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528853959] [2021-08-26 06:34:24,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:34:24,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:34:24,550 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:34:24,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117068243] [2021-08-26 06:34:24,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:34:24,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:34:24,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:34:24,581 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) [2021-08-26 06:34:24,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 06:34:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:34:24,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 06:34:24,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:34:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:34:24,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:34:24,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528853959] [2021-08-26 06:34:24,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:34:24,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117068243] [2021-08-26 06:34:24,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117068243] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:34:24,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:34:24,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 06:34:24,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099392891] [2021-08-26 06:34:24,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 06:34:24,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:34:24,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 06:34:24,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 06:34:24,763 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-08-26 06:34:26,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:34:26,975 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2021-08-26 06:34:26,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 06:34:26,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-08-26 06:34:26,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:34:26,976 INFO L225 Difference]: With dead ends: 66 [2021-08-26 06:34:26,976 INFO L226 Difference]: Without dead ends: 58 [2021-08-26 06:34:26,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:34:26,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-08-26 06:34:26,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2021-08-26 06:34:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 48 states have internal predecessors, (57), 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) [2021-08-26 06:34:26,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2021-08-26 06:34:26,981 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 12 [2021-08-26 06:34:26,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:34:26,981 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2021-08-26 06:34:26,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-08-26 06:34:26,981 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2021-08-26 06:34:26,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 06:34:26,981 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:34:26,981 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:34:27,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 06:34:27,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:34:27,185 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 06:34:27,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:34:27,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2021-08-26 06:34:27,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:34:27,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337605668] [2021-08-26 06:34:27,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:34:27,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:34:27,194 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:34:27,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388687363] [2021-08-26 06:34:27,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:34:27,195 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:34:27,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:34:27,207 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) [2021-08-26 06:34:27,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 06:34:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:34:27,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-26 06:34:27,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:34:27,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:34:27,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:34:27,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337605668] [2021-08-26 06:34:27,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:34:27,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388687363] [2021-08-26 06:34:27,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388687363] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:34:27,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:34:27,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 06:34:27,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230327106] [2021-08-26 06:34:27,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 06:34:27,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:34:27,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 06:34:27,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:34:27,358 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-08-26 06:34:27,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:34:27,380 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-08-26 06:34:27,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 06:34:27,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2021-08-26 06:34:27,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:34:27,381 INFO L225 Difference]: With dead ends: 61 [2021-08-26 06:34:27,381 INFO L226 Difference]: Without dead ends: 36 [2021-08-26 06:34:27,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.2ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-26 06:34:27,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-26 06:34:27,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-08-26 06:34:27,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 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) [2021-08-26 06:34:27,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-08-26 06:34:27,384 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 16 [2021-08-26 06:34:27,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:34:27,385 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-08-26 06:34:27,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-08-26 06:34:27,385 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-08-26 06:34:27,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 06:34:27,385 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:34:27,385 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:34:27,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 06:34:27,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-26 06:34:27,638 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 06:34:27,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:34:27,639 INFO L82 PathProgramCache]: Analyzing trace with hash 77359410, now seen corresponding path program 1 times [2021-08-26 06:34:27,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:34:27,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813286667] [2021-08-26 06:34:27,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:34:27,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:34:27,648 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:34:27,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273134710] [2021-08-26 06:34:27,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:34:27,648 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:34:27,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:34:27,661 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) [2021-08-26 06:34:27,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 06:34:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:34:27,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 06:34:27,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:34:27,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:34:27,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:34:27,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813286667] [2021-08-26 06:34:27,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:34:27,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273134710] [2021-08-26 06:34:27,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273134710] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:34:27,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:34:27,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 06:34:27,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032637764] [2021-08-26 06:34:27,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 06:34:27,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:34:27,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 06:34:27,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:34:27,961 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:34:28,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:34:28,030 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2021-08-26 06:34:28,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 06:34:28,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-26 06:34:28,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:34:28,031 INFO L225 Difference]: With dead ends: 44 [2021-08-26 06:34:28,031 INFO L226 Difference]: Without dead ends: 38 [2021-08-26 06:34:28,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 38.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-26 06:34:28,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-08-26 06:34:28,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2021-08-26 06:34:28,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 29 states have internal predecessors, (31), 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) [2021-08-26 06:34:28,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-08-26 06:34:28,034 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 17 [2021-08-26 06:34:28,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:34:28,034 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-08-26 06:34:28,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:34:28,035 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-08-26 06:34:28,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 06:34:28,035 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:34:28,035 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:34:28,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 06:34:28,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:34:28,270 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 06:34:28,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:34:28,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2021-08-26 06:34:28,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:34:28,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297624055] [2021-08-26 06:34:28,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:34:28,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:34:28,302 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:34:28,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [161977444] [2021-08-26 06:34:28,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:34:28,303 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:34:28,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:34:28,329 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) [2021-08-26 06:34:28,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 06:34:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:34:28,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-26 06:34:28,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:34:28,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:34:28,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:34:28,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297624055] [2021-08-26 06:34:28,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:34:28,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161977444] [2021-08-26 06:34:28,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161977444] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:34:28,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:34:28,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-08-26 06:34:28,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992283698] [2021-08-26 06:34:28,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 06:34:28,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:34:28,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 06:34:28,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:34:28,497 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:34:28,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:34:28,517 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2021-08-26 06:34:28,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 06:34:28,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-08-26 06:34:28,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:34:28,517 INFO L225 Difference]: With dead ends: 40 [2021-08-26 06:34:28,518 INFO L226 Difference]: Without dead ends: 22 [2021-08-26 06:34:28,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-26 06:34:28,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-26 06:34:28,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-08-26 06:34:28,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0) internal successors, (21), 21 states have internal predecessors, (21), 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) [2021-08-26 06:34:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2021-08-26 06:34:28,520 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 20 [2021-08-26 06:34:28,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:34:28,520 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2021-08-26 06:34:28,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:34:28,520 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2021-08-26 06:34:28,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-26 06:34:28,521 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:34:28,521 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:34:28,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 06:34:28,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:34:28,739 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 06:34:28,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:34:28,740 INFO L82 PathProgramCache]: Analyzing trace with hash 125341744, now seen corresponding path program 1 times [2021-08-26 06:34:28,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:34:28,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499140595] [2021-08-26 06:34:28,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:34:28,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:34:28,748 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:34:28,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729908654] [2021-08-26 06:34:28,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:34:28,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:34:28,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:34:28,749 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) [2021-08-26 06:34:28,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 06:34:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:34:28,821 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 06:34:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:34:28,848 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 06:34:28,849 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 06:34:28,849 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:34:28,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:34:28,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:34:28,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:34:28,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:34:28,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:34:28,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:34:28,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 06:34:29,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:34:29,065 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 06:34:29,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:34:29 BoogieIcfgContainer [2021-08-26 06:34:29,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 06:34:29,082 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 06:34:29,082 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 06:34:29,082 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 06:34:29,082 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:34:23" (3/4) ... [2021-08-26 06:34:29,083 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-26 06:34:29,184 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 06:34:29,185 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 06:34:29,186 INFO L168 Benchmark]: Toolchain (without parser) took 5853.45 ms. Allocated memory was 52.4 MB in the beginning and 83.9 MB in the end (delta: 31.5 MB). Free memory was 29.7 MB in the beginning and 43.2 MB in the end (delta: -13.5 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-08-26 06:34:29,186 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 52.4 MB. Free memory was 34.3 MB in the beginning and 34.3 MB in the end (delta: 39.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:34:29,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.74 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 29.5 MB in the beginning and 51.3 MB in the end (delta: -21.8 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-08-26 06:34:29,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.20 ms. Allocated memory is still 67.1 MB. Free memory was 51.1 MB in the beginning and 49.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:34:29,186 INFO L168 Benchmark]: Boogie Preprocessor took 14.33 ms. Allocated memory is still 67.1 MB. Free memory was 49.4 MB in the beginning and 48.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:34:29,186 INFO L168 Benchmark]: RCFGBuilder took 434.08 ms. Allocated memory is still 67.1 MB. Free memory was 48.1 MB in the beginning and 48.6 MB in the end (delta: -499.4 kB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2021-08-26 06:34:29,187 INFO L168 Benchmark]: TraceAbstraction took 5089.97 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 48.2 MB in the beginning and 46.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2021-08-26 06:34:29,187 INFO L168 Benchmark]: Witness Printer took 102.62 ms. Allocated memory is still 83.9 MB. Free memory was 46.0 MB in the beginning and 43.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:34:29,188 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 52.4 MB. Free memory was 34.3 MB in the beginning and 34.3 MB in the end (delta: 39.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 184.74 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 29.5 MB in the beginning and 51.3 MB in the end (delta: -21.8 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.20 ms. Allocated memory is still 67.1 MB. Free memory was 51.1 MB in the beginning and 49.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.33 ms. Allocated memory is still 67.1 MB. Free memory was 49.4 MB in the beginning and 48.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 434.08 ms. Allocated memory is still 67.1 MB. Free memory was 48.1 MB in the beginning and 48.6 MB in the end (delta: -499.4 kB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5089.97 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 48.2 MB in the beginning and 46.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * Witness Printer took 102.62 ms. Allocated memory is still 83.9 MB. Free memory was 46.0 MB in the beginning and 43.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int A, B; [L25] unsigned int r, d, p, q; [L26] A = __VERIFIER_nondet_unsigned_int() [L27] B = __VERIFIER_nondet_unsigned_int() [L12] COND FALSE !(!cond) VAL [counter=0] [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [counter=0] [L35] EXPR counter++ VAL [counter=1] [L35] COND TRUE counter++<1 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=1] [L35] EXPR counter++ VAL [counter=2] [L35] COND FALSE !(counter++<1) [L45] EXPR counter++ VAL [counter=3] [L45] COND FALSE !(counter++<1) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L17] reach_error() VAL [counter=3] - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 5038.8ms, OverallIterations: 9, TraceHistogramMax: 2, EmptinessCheckTime: 8.5ms, AutomataDifference: 2492.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 235 SDtfs, 168 SDslu, 238 SDs, 0 SdLazy, 150 SolverSat, 38 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2180.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 112.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=5, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 48.6ms AutomataMinimizationTime, 8 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 37.9ms SsaConstructionTime, 122.1ms SatisfiabilityAnalysisTime, 576.7ms InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 300 SizeOfPredicates, 12 NumberOfNonLiveVariables, 319 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 6/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-26 06:34:29,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...