./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/cohencu-ll_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 d2e467e7f7f6c55f410dad37a6e857e419829655 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-wip.dd.seqcomp-5fbdf5b [2021-08-29 12:02:26,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 12:02:26,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 12:02:26,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 12:02:26,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 12:02:26,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 12:02:26,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 12:02:26,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 12:02:26,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 12:02:26,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 12:02:26,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 12:02:26,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 12:02:26,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 12:02:26,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 12:02:26,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 12:02:26,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 12:02:26,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 12:02:26,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 12:02:26,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 12:02:26,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 12:02:26,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 12:02:26,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 12:02:26,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 12:02:26,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 12:02:26,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 12:02:26,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 12:02:26,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 12:02:26,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 12:02:26,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 12:02:26,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 12:02:26,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 12:02:26,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 12:02:26,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 12:02:26,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 12:02:26,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 12:02:26,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 12:02:26,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 12:02:26,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 12:02:26,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 12:02:26,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 12:02:26,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 12:02:26,643 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 12:02:26,675 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 12:02:26,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 12:02:26,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 12:02:26,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 12:02:26,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 12:02:26,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 12:02:26,678 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 12:02:26,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 12:02:26,679 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 12:02:26,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 12:02:26,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 12:02:26,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 12:02:26,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 12:02:26,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 12:02:26,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 12:02:26,680 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 12:02:26,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 12:02:26,681 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 12:02:26,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 12:02:26,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 12:02:26,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 12:02:26,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 12:02:26,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:02:26,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 12:02:26,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 12:02:26,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 12:02:26,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 12:02:26,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 12:02:26,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 12:02:26,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 12:02:26,682 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2e467e7f7f6c55f410dad37a6e857e419829655 [2021-08-29 12:02:26,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 12:02:26,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 12:02:26,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 12:02:26,941 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 12:02:26,941 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 12:02:26,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c [2021-08-29 12:02:27,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf175b11e/13eed9afceb541b9bb84263fa8c16fbf/FLAGf5aa642e8 [2021-08-29 12:02:27,304 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 12:02:27,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c [2021-08-29 12:02:27,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf175b11e/13eed9afceb541b9bb84263fa8c16fbf/FLAGf5aa642e8 [2021-08-29 12:02:27,736 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf175b11e/13eed9afceb541b9bb84263fa8c16fbf [2021-08-29 12:02:27,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 12:02:27,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 12:02:27,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 12:02:27,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 12:02:27,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 12:02:27,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:02:27" (1/1) ... [2021-08-29 12:02:27,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@619e2d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:27, skipping insertion in model container [2021-08-29 12:02:27,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:02:27" (1/1) ... [2021-08-29 12:02:27,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 12:02:27,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 12:02:27,839 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/cohencu-ll_unwindbound1.c[596,609] [2021-08-29 12:02:27,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:02:27,856 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 12:02:27,863 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/cohencu-ll_unwindbound1.c[596,609] [2021-08-29 12:02:27,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:02:27,886 INFO L208 MainTranslator]: Completed translation [2021-08-29 12:02:27,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:27 WrapperNode [2021-08-29 12:02:27,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 12:02:27,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 12:02:27,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 12:02:27,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 12:02:27,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:27" (1/1) ... [2021-08-29 12:02:27,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:27" (1/1) ... [2021-08-29 12:02:27,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 12:02:27,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 12:02:27,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 12:02:27,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 12:02:27,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:27" (1/1) ... [2021-08-29 12:02:27,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:27" (1/1) ... [2021-08-29 12:02:27,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:27" (1/1) ... [2021-08-29 12:02:27,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:27" (1/1) ... [2021-08-29 12:02:27,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:27" (1/1) ... [2021-08-29 12:02:27,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:27" (1/1) ... [2021-08-29 12:02:27,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:27" (1/1) ... [2021-08-29 12:02:27,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 12:02:27,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 12:02:27,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 12:02:27,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 12:02:27,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:27" (1/1) ... [2021-08-29 12:02:27,975 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:02:27,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:27,991 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) [2021-08-29 12:02:27,993 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 [2021-08-29 12:02:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 12:02:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_short [2021-08-29 12:02:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 12:02:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 12:02:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 12:02:28,171 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 12:02:28,172 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-08-29 12:02:28,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:02:28 BoogieIcfgContainer [2021-08-29 12:02:28,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 12:02:28,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 12:02:28,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 12:02:28,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 12:02:28,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 12:02:27" (1/3) ... [2021-08-29 12:02:28,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122790ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:02:28, skipping insertion in model container [2021-08-29 12:02:28,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:27" (2/3) ... [2021-08-29 12:02:28,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122790ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:02:28, skipping insertion in model container [2021-08-29 12:02:28,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:02:28" (3/3) ... [2021-08-29 12:02:28,182 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound1.c [2021-08-29 12:02:28,185 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 12:02:28,185 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-08-29 12:02:28,238 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 12:02:28,244 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 [2021-08-29 12:02:28,245 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-29 12:02:28,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 40 states have (on average 1.625) internal successors, (65), 51 states have internal predecessors, (65), 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) [2021-08-29 12:02:28,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 12:02:28,262 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:28,262 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 12:02:28,263 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:28,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:28,273 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-08-29 12:02:28,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:28,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237108643] [2021-08-29 12:02:28,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:28,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:02:28,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:28,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:28,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237108643] [2021-08-29 12:02:28,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237108643] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:02:28,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:02:28,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:02:28,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645057661] [2021-08-29 12:02:28,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:02:28,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:28,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:02:28,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:02:28,569 INFO L87 Difference]: Start difference. First operand has 52 states, 40 states have (on average 1.625) internal successors, (65), 51 states have internal predecessors, (65), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-08-29 12:02:28,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:28,721 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2021-08-29 12:02:28,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:02:28,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-08-29 12:02:28,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:28,734 INFO L225 Difference]: With dead ends: 101 [2021-08-29 12:02:28,734 INFO L226 Difference]: Without dead ends: 47 [2021-08-29 12:02:28,736 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.61ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:02:28,739 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.43ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111.57ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:28,740 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 107 Unknown, 0 Unchecked, 1.43ms Time], IncrementalHoareTripleChecker [22 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 111.57ms Time] [2021-08-29 12:02:28,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-08-29 12:02:28,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2021-08-29 12:02:28,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 43 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:28,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-08-29 12:02:28,772 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 6 [2021-08-29 12:02:28,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:28,773 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-08-29 12:02:28,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-08-29 12:02:28,773 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-08-29 12:02:28,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 12:02:28,774 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:28,774 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:02:28,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 12:02:28,775 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:28,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:28,777 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-08-29 12:02:28,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:28,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616424733] [2021-08-29 12:02:28,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:28,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:28,793 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:28,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1392712230] [2021-08-29 12:02:28,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:28,793 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:28,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:28,794 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) [2021-08-29 12:02:28,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 12:02:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:02:28,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 12:02:28,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:02:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:28,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:02:28,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:28,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616424733] [2021-08-29 12:02:28,960 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:02:28,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392712230] [2021-08-29 12:02:28,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392712230] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:02:28,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:02:28,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:02:28,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923166711] [2021-08-29 12:02:28,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:02:28,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:28,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:02:28,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:02:28,963 INFO L87 Difference]: Start difference. First operand 44 states and 45 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) [2021-08-29 12:02:29,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:29,101 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2021-08-29 12:02:29,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:02:29,102 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 [2021-08-29 12:02:29,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:29,103 INFO L225 Difference]: With dead ends: 86 [2021-08-29 12:02:29,103 INFO L226 Difference]: Without dead ends: 84 [2021-08-29 12:02:29,103 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.07ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:02:29,104 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.16ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.23ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:29,105 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 135 Unknown, 0 Unchecked, 2.16ms Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 116.23ms Time] [2021-08-29 12:02:29,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-29 12:02:29,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 49. [2021-08-29 12:02:29,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.275) internal successors, (51), 48 states have internal predecessors, (51), 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) [2021-08-29 12:02:29,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2021-08-29 12:02:29,125 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 8 [2021-08-29 12:02:29,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:29,125 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2021-08-29 12:02:29,125 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) [2021-08-29 12:02:29,126 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2021-08-29 12:02:29,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 12:02:29,126 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:29,126 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:02:29,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 12:02:29,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:29,334 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:29,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:29,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1269812074, now seen corresponding path program 1 times [2021-08-29 12:02:29,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:29,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888478123] [2021-08-29 12:02:29,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:29,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:29,342 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:29,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323207735] [2021-08-29 12:02:29,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:29,343 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:29,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:29,348 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) [2021-08-29 12:02:29,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 12:02:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:02:29,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-29 12:02:29,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:02:29,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:29,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:02:29,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:29,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888478123] [2021-08-29 12:02:29,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:02:29,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323207735] [2021-08-29 12:02:29,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323207735] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:02:29,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:02:29,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 12:02:29,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89499927] [2021-08-29 12:02:29,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:02:29,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:29,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:02:29,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:02:29,405 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:29,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:29,480 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2021-08-29 12:02:29,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:02:29,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-29 12:02:29,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:29,481 INFO L225 Difference]: With dead ends: 71 [2021-08-29 12:02:29,481 INFO L226 Difference]: Without dead ends: 49 [2021-08-29 12:02:29,482 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.53ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:02:29,482 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.97ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.70ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:29,483 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 133 Unknown, 0 Unchecked, 0.97ms Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 67.70ms Time] [2021-08-29 12:02:29,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-08-29 12:02:29,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-08-29 12:02:29,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.25) internal successors, (50), 48 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:29,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-08-29 12:02:29,504 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 9 [2021-08-29 12:02:29,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:29,505 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-08-29 12:02:29,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:29,505 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-08-29 12:02:29,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 12:02:29,505 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:29,506 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:02:29,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 12:02:29,720 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,SelfDestructingSolverStorable2 [2021-08-29 12:02:29,721 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:29,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:29,721 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-08-29 12:02:29,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:29,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057253074] [2021-08-29 12:02:29,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:29,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:29,729 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:29,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784425095] [2021-08-29 12:02:29,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:29,729 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:29,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:29,730 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) [2021-08-29 12:02:29,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 12:02:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:02:29,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 12:02:29,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:02:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:29,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:02:29,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:29,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057253074] [2021-08-29 12:02:29,806 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:02:29,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784425095] [2021-08-29 12:02:29,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784425095] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:02:29,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:02:29,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:02:29,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350487317] [2021-08-29 12:02:29,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:02:29,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:29,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:02:29,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:02:29,808 INFO L87 Difference]: Start difference. First operand 49 states and 50 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) [2021-08-29 12:02:29,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:29,909 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-08-29 12:02:29,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:02:29,909 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 [2021-08-29 12:02:29,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:29,910 INFO L225 Difference]: With dead ends: 84 [2021-08-29 12:02:29,910 INFO L226 Difference]: Without dead ends: 80 [2021-08-29 12:02:29,910 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.43ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:02:29,911 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.73ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.12ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:29,911 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 137 Unknown, 0 Unchecked, 0.73ms Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 89.12ms Time] [2021-08-29 12:02:29,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-29 12:02:29,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-08-29 12:02:29,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 59 states have internal predecessors, (64), 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) [2021-08-29 12:02:29,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2021-08-29 12:02:29,916 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 10 [2021-08-29 12:02:29,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:29,916 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2021-08-29 12:02:29,916 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) [2021-08-29 12:02:29,916 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2021-08-29 12:02:29,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 12:02:29,916 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:29,917 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:02:29,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-08-29 12:02:30,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:30,133 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:30,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:30,134 INFO L82 PathProgramCache]: Analyzing trace with hash -828134125, now seen corresponding path program 1 times [2021-08-29 12:02:30,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:30,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350488281] [2021-08-29 12:02:30,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:30,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:30,140 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:30,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1893560682] [2021-08-29 12:02:30,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:30,141 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:30,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:30,148 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) [2021-08-29 12:02:30,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 12:02:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:02:30,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-29 12:02:30,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:02:30,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:30,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:02:30,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:30,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350488281] [2021-08-29 12:02:30,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:02:30,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893560682] [2021-08-29 12:02:30,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893560682] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:02:30,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:02:30,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:02:30,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868023249] [2021-08-29 12:02:30,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:02:30,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:30,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:02:30,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:02:30,261 INFO L87 Difference]: Start difference. First operand 60 states and 64 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) [2021-08-29 12:02:30,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:30,393 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2021-08-29 12:02:30,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 12:02:30,393 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 [2021-08-29 12:02:30,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:30,398 INFO L225 Difference]: With dead ends: 83 [2021-08-29 12:02:30,399 INFO L226 Difference]: Without dead ends: 59 [2021-08-29 12:02:30,399 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.12ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:02:30,400 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.99ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.96ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:30,400 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 155 Unknown, 0 Unchecked, 0.99ms Time], IncrementalHoareTripleChecker [18 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 116.96ms Time] [2021-08-29 12:02:30,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-08-29 12:02:30,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2021-08-29 12:02:30,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 55 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) [2021-08-29 12:02:30,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-08-29 12:02:30,405 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 12 [2021-08-29 12:02:30,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:30,406 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-08-29 12:02:30,406 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) [2021-08-29 12:02:30,406 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-08-29 12:02:30,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-29 12:02:30,406 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:30,407 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:02:30,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-29 12:02:30,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:30,613 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:30,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:30,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1416701979, now seen corresponding path program 1 times [2021-08-29 12:02:30,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:30,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989028268] [2021-08-29 12:02:30,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:30,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:30,621 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:30,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593531748] [2021-08-29 12:02:30,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:30,621 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:30,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:30,624 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) [2021-08-29 12:02:30,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-29 12:02:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:02:30,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-29 12:02:30,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:02:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:30,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:02:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:30,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:30,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989028268] [2021-08-29 12:02:30,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:02:30,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593531748] [2021-08-29 12:02:30,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593531748] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:02:30,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:02:30,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-29 12:02:30,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426589304] [2021-08-29 12:02:30,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 12:02:30,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:30,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 12:02:30,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:02:30,730 INFO L87 Difference]: Start difference. First operand 56 states and 57 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) [2021-08-29 12:02:30,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:30,778 INFO L93 Difference]: Finished difference Result 80 states and 81 transitions. [2021-08-29 12:02:30,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 12:02:30,778 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 [2021-08-29 12:02:30,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:30,779 INFO L225 Difference]: With dead ends: 80 [2021-08-29 12:02:30,779 INFO L226 Difference]: Without dead ends: 38 [2021-08-29 12:02:30,779 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.69ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-29 12:02:30,780 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.47ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.76ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:30,780 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 77 Unknown, 0 Unchecked, 0.47ms Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 39.76ms Time] [2021-08-29 12:02:30,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-08-29 12:02:30,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-08-29 12:02:30,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.121212121212121) internal successors, (37), 37 states have internal predecessors, (37), 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) [2021-08-29 12:02:30,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 37 transitions. [2021-08-29 12:02:30,783 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 37 transitions. Word has length 20 [2021-08-29 12:02:30,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:30,783 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 37 transitions. [2021-08-29 12:02:30,783 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) [2021-08-29 12:02:30,783 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 37 transitions. [2021-08-29 12:02:30,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-29 12:02:30,784 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:30,784 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:02:30,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-29 12:02:31,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:31,004 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:31,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:31,004 INFO L82 PathProgramCache]: Analyzing trace with hash -972705934, now seen corresponding path program 1 times [2021-08-29 12:02:31,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:31,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963316443] [2021-08-29 12:02:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:31,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:31,021 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:31,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124630684] [2021-08-29 12:02:31,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:31,023 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:31,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:31,024 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:02:31,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-29 12:02:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 12:02:31,061 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 12:02:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 12:02:31,086 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 12:02:31,087 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 12:02:31,088 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (10 of 11 remaining) [2021-08-29 12:02:31,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (9 of 11 remaining) [2021-08-29 12:02:31,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (8 of 11 remaining) [2021-08-29 12:02:31,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (7 of 11 remaining) [2021-08-29 12:02:31,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (6 of 11 remaining) [2021-08-29 12:02:31,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 11 remaining) [2021-08-29 12:02:31,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 11 remaining) [2021-08-29 12:02:31,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (3 of 11 remaining) [2021-08-29 12:02:31,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (2 of 11 remaining) [2021-08-29 12:02:31,091 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2021-08-29 12:02:31,091 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (0 of 11 remaining) [2021-08-29 12:02:31,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-29 12:02:31,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:31,309 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 12:02:31,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 12:02:31 BoogieIcfgContainer [2021-08-29 12:02:31,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 12:02:31,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 12:02:31,339 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 12:02:31,339 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 12:02:31,339 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:02:28" (3/4) ... [2021-08-29 12:02:31,341 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 12:02:31,381 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 12:02:31,381 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 12:02:31,382 INFO L158 Benchmark]: Toolchain (without parser) took 3642.82ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 35.5MB in the beginning and 61.7MB in the end (delta: -26.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:02:31,382 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 56.6MB. Free memory was 38.6MB in the beginning and 38.6MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:02:31,382 INFO L158 Benchmark]: CACSL2BoogieTranslator took 138.63ms. Allocated memory is still 56.6MB. Free memory was 35.4MB in the beginning and 41.0MB in the end (delta: -5.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-08-29 12:02:31,382 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.80ms. Allocated memory is still 56.6MB. Free memory was 41.0MB in the beginning and 39.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 12:02:31,383 INFO L158 Benchmark]: Boogie Preprocessor took 26.53ms. Allocated memory is still 56.6MB. Free memory was 39.1MB in the beginning and 37.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:02:31,383 INFO L158 Benchmark]: RCFGBuilder took 222.31ms. Allocated memory is still 56.6MB. Free memory was 37.9MB in the beginning and 27.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 12:02:31,383 INFO L158 Benchmark]: TraceAbstraction took 3160.75ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 27.2MB in the beginning and 63.9MB in the end (delta: -36.7MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2021-08-29 12:02:31,383 INFO L158 Benchmark]: Witness Printer took 42.57ms. Allocated memory is still 83.9MB. Free memory was 63.9MB in the beginning and 61.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 12:02:31,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 56.6MB. Free memory was 38.6MB in the beginning and 38.6MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 138.63ms. Allocated memory is still 56.6MB. Free memory was 35.4MB in the beginning and 41.0MB in the end (delta: -5.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.80ms. Allocated memory is still 56.6MB. Free memory was 41.0MB in the beginning and 39.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.53ms. Allocated memory is still 56.6MB. Free memory was 39.1MB in the beginning and 37.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 222.31ms. Allocated memory is still 56.6MB. Free memory was 37.9MB in the beginning and 27.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3160.75ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 27.2MB in the beginning and 63.9MB in the end (delta: -36.7MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * Witness Printer took 42.57ms. Allocated memory is still 83.9MB. Free memory was 63.9MB in the beginning and 61.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms 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] short a; [L25] long long n, x, y, z; [L26] a = __VERIFIER_nondet_unsigned_short() [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] 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] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=1] [L33] EXPR counter++ VAL [counter=2] [L33] COND FALSE !(counter++<1) [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND TRUE !(cond) VAL [counter=2] [L17] reach_error() VAL [counter=2] - 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. - 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, 52 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 3070.94ms, OverallIterations: 7, TraceHistogramMax: 2, EmptinessCheckTime: 10.51ms, AutomataDifference: 705.44ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 8.61ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 163 SdHoareTripleChecker+Valid, 541.34ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 163 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 398.86ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 268 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 698 IncrementalHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 0 mSDtfsCounter, 698 mSolverCounterSat, 6.76ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 70.46ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=4, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 76.44ms AutomataMinimizationTime, 6 MinimizatonAttempts, 61 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 41.35ms SsaConstructionTime, 97.91ms SatisfiabilityAnalysisTime, 518.28ms InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 297 SizeOfPredicates, 11 NumberOfNonLiveVariables, 354 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 8/10 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! [2021-08-29 12:02:31,409 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...