./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound50.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/egcd-ll_unwindbound50.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 5599d9c401794fe6c69a2059d512381ecdcef42a ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:43:05,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 12:43:05,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 12:43:05,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 12:43:05,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 12:43:05,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 12:43:05,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 12:43:05,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 12:43:05,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 12:43:05,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 12:43:05,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 12:43:05,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 12:43:05,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 12:43:05,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 12:43:05,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 12:43:05,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 12:43:05,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 12:43:05,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 12:43:05,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 12:43:05,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 12:43:05,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 12:43:05,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 12:43:05,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 12:43:05,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 12:43:05,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 12:43:05,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 12:43:05,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 12:43:05,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 12:43:05,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 12:43:05,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 12:43:05,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 12:43:05,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 12:43:05,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 12:43:05,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 12:43:05,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 12:43:05,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 12:43:05,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 12:43:05,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 12:43:05,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 12:43:05,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 12:43:05,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 12:43:05,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 12:43:05,588 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 12:43:05,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 12:43:05,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 12:43:05,589 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 12:43:05,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 12:43:05,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 12:43:05,591 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 12:43:05,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 12:43:05,591 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 12:43:05,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 12:43:05,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 12:43:05,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 12:43:05,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 12:43:05,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 12:43:05,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 12:43:05,592 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 12:43:05,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 12:43:05,592 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 12:43:05,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 12:43:05,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 12:43:05,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 12:43:05,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 12:43:05,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:43:05,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 12:43:05,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 12:43:05,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 12:43:05,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 12:43:05,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 12:43:05,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 12:43:05,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 12:43:05,593 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5599d9c401794fe6c69a2059d512381ecdcef42a [2021-08-29 12:43:05,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 12:43:05,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 12:43:05,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 12:43:05,888 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 12:43:05,888 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 12:43:05,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound50.c [2021-08-29 12:43:05,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4437bc300/9dcec93e08fc4577af3f5fabb0f52c77/FLAGfd4234b41 [2021-08-29 12:43:06,309 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 12:43:06,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound50.c [2021-08-29 12:43:06,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4437bc300/9dcec93e08fc4577af3f5fabb0f52c77/FLAGfd4234b41 [2021-08-29 12:43:06,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4437bc300/9dcec93e08fc4577af3f5fabb0f52c77 [2021-08-29 12:43:06,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 12:43:06,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 12:43:06,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 12:43:06,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 12:43:06,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 12:43:06,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:43:06" (1/1) ... [2021-08-29 12:43:06,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d37e77a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:43:06, skipping insertion in model container [2021-08-29 12:43:06,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:43:06" (1/1) ... [2021-08-29 12:43:06,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 12:43:06,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 12:43:06,845 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/egcd-ll_unwindbound50.c[489,502] [2021-08-29 12:43:06,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:43:06,865 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 12:43:06,893 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/egcd-ll_unwindbound50.c[489,502] [2021-08-29 12:43:06,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:43:06,914 INFO L208 MainTranslator]: Completed translation [2021-08-29 12:43:06,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:43:06 WrapperNode [2021-08-29 12:43:06,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 12:43:06,916 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 12:43:06,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 12:43:06,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 12:43:06,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:43:06" (1/1) ... [2021-08-29 12:43:06,927 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:43:06" (1/1) ... [2021-08-29 12:43:06,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 12:43:06,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 12:43:06,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 12:43:06,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 12:43:06,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:43:06" (1/1) ... [2021-08-29 12:43:06,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:43:06" (1/1) ... [2021-08-29 12:43:06,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:43:06" (1/1) ... [2021-08-29 12:43:06,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:43:06" (1/1) ... [2021-08-29 12:43:06,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:43:06" (1/1) ... [2021-08-29 12:43:06,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:43:06" (1/1) ... [2021-08-29 12:43:06,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:43:06" (1/1) ... [2021-08-29 12:43:06,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 12:43:06,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 12:43:06,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 12:43:06,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 12:43:06,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:43:06" (1/1) ... [2021-08-29 12:43:06,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:43:07,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:43:07,012 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 12:43:07,034 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 12:43:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 12:43:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 12:43:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 12:43:07,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 12:43:07,195 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 12:43:07,196 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-08-29 12:43:07,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:43:07 BoogieIcfgContainer [2021-08-29 12:43:07,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 12:43:07,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 12:43:07,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 12:43:07,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 12:43:07,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 12:43:06" (1/3) ... [2021-08-29 12:43:07,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a00b630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:43:07, skipping insertion in model container [2021-08-29 12:43:07,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:43:06" (2/3) ... [2021-08-29 12:43:07,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a00b630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:43:07, skipping insertion in model container [2021-08-29 12:43:07,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:43:07" (3/3) ... [2021-08-29 12:43:07,203 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound50.c [2021-08-29 12:43:07,209 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 12:43:07,209 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-29 12:43:07,256 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 12:43:07,263 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 12:43:07,263 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-29 12:43:07,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 33 states have (on average 1.606060606060606) internal successors, (53), 40 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:43:07,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 12:43:07,292 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:43:07,292 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:43:07,293 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:43:07,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:43:07,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2021-08-29 12:43:07,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:43:07,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93356155] [2021-08-29 12:43:07,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:07,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:43:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:43:07,522 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 12:43:07,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:43:07,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93356155] [2021-08-29 12:43:07,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93356155] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:43:07,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:43:07,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 12:43:07,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597420292] [2021-08-29 12:43:07,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 12:43:07,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:43:07,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 12:43:07,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 12:43:07,575 INFO L87 Difference]: Start difference. First operand has 41 states, 33 states have (on average 1.606060606060606) internal successors, (53), 40 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 12:43:07,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:43:07,718 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2021-08-29 12:43:07,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 12:43:07,721 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 12:43:07,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:43:07,727 INFO L225 Difference]: With dead ends: 79 [2021-08-29 12:43:07,727 INFO L226 Difference]: Without dead ends: 37 [2021-08-29 12:43:07,730 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 12:43:07,737 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.64ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.54ms IncrementalHoareTripleChecker+Time [2021-08-29 12:43:07,740 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 43 Unknown, 0 Unchecked, 0.64ms Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 123.54ms Time] [2021-08-29 12:43:07,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-29 12:43:07,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-29 12:43:07,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.3) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:43:07,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-08-29 12:43:07,777 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 10 [2021-08-29 12:43:07,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:43:07,778 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-08-29 12:43:07,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 12:43:07,778 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-08-29 12:43:07,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 12:43:07,779 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:43:07,779 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:43:07,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 12:43:07,780 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:43:07,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:43:07,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2021-08-29 12:43:07,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:43:07,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370331197] [2021-08-29 12:43:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:07,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:43:07,820 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:43:07,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962449104] [2021-08-29 12:43:07,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:07,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:07,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:43:07,823 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 12:43:07,824 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 12:43:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:43:07,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-29 12:43:07,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:43:08,063 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 12:43:08,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:43:08,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:43:08,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370331197] [2021-08-29 12:43:08,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:43:08,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962449104] [2021-08-29 12:43:08,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962449104] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:43:08,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:43:08,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:43:08,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004031681] [2021-08-29 12:43:08,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:43:08,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:43:08,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:43:08,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:43:08,067 INFO L87 Difference]: Start difference. First operand 37 states and 39 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 12:43:08,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:43:08,176 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-08-29 12:43:08,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:43:08,177 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 12:43:08,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:43:08,178 INFO L225 Difference]: With dead ends: 68 [2021-08-29 12:43:08,178 INFO L226 Difference]: Without dead ends: 64 [2021-08-29 12:43:08,178 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.71ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:43:08,179 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.74ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.64ms IncrementalHoareTripleChecker+Time [2021-08-29 12:43:08,180 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 121 Unknown, 0 Unchecked, 1.74ms Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 84.64ms Time] [2021-08-29 12:43:08,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-29 12:43:08,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2021-08-29 12:43:08,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 51 states have internal predecessors, (61), 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 12:43:08,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2021-08-29 12:43:08,187 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 10 [2021-08-29 12:43:08,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:43:08,188 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2021-08-29 12:43:08,188 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 12:43:08,188 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2021-08-29 12:43:08,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 12:43:08,188 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:43:08,189 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:43:08,220 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 12:43:08,416 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 12:43:08,417 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:43:08,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:43:08,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1507402239, now seen corresponding path program 1 times [2021-08-29 12:43:08,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:43:08,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485910366] [2021-08-29 12:43:08,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:08,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:43:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:43:08,478 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 12:43:08,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:43:08,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485910366] [2021-08-29 12:43:08,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485910366] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:43:08,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:43:08,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 12:43:08,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313343965] [2021-08-29 12:43:08,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:43:08,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:43:08,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:43:08,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:43:08,486 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 12:43:08,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:43:08,566 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2021-08-29 12:43:08,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:43:08,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-08-29 12:43:08,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:43:08,567 INFO L225 Difference]: With dead ends: 68 [2021-08-29 12:43:08,567 INFO L226 Difference]: Without dead ends: 54 [2021-08-29 12:43:08,568 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.69ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:43:08,568 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.97ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.30ms IncrementalHoareTripleChecker+Time [2021-08-29 12:43:08,569 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 111 Unknown, 0 Unchecked, 0.97ms Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 70.30ms Time] [2021-08-29 12:43:08,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-08-29 12:43:08,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-08-29 12:43:08,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 53 states have internal predecessors, (63), 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 12:43:08,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2021-08-29 12:43:08,574 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 11 [2021-08-29 12:43:08,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:43:08,574 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2021-08-29 12:43:08,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 12:43:08,574 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2021-08-29 12:43:08,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 12:43:08,575 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:43:08,575 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:43:08,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 12:43:08,575 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:43:08,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:43:08,575 INFO L82 PathProgramCache]: Analyzing trace with hash 515817425, now seen corresponding path program 1 times [2021-08-29 12:43:08,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:43:08,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164280080] [2021-08-29 12:43:08,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:08,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:43:08,583 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:43:08,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1764249645] [2021-08-29 12:43:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:08,584 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:08,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:43:08,605 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 12:43:08,624 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 12:43:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:43:08,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-29 12:43:08,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:43:08,858 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 12:43:08,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:43:08,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:43:08,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164280080] [2021-08-29 12:43:08,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:43:08,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764249645] [2021-08-29 12:43:08,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764249645] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:43:08,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:43:08,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-29 12:43:08,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614138930] [2021-08-29 12:43:08,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-29 12:43:08,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:43:08,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-29 12:43:08,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-29 12:43:08,867 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 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 12:43:09,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:43:09,051 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2021-08-29 12:43:09,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 12:43:09,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 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 12:43:09,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:43:09,054 INFO L225 Difference]: With dead ends: 66 [2021-08-29 12:43:09,054 INFO L226 Difference]: Without dead ends: 64 [2021-08-29 12:43:09,057 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 127.65ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-08-29 12:43:09,059 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 259 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.90ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.55ms IncrementalHoareTripleChecker+Time [2021-08-29 12:43:09,060 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 0 Invalid, 131 Unknown, 0 Unchecked, 6.90ms Time], IncrementalHoareTripleChecker [10 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 74.55ms Time] [2021-08-29 12:43:09,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-29 12:43:09,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2021-08-29 12:43:09,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 53 states have internal predecessors, (62), 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 12:43:09,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2021-08-29 12:43:09,078 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 12 [2021-08-29 12:43:09,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:43:09,078 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2021-08-29 12:43:09,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 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 12:43:09,078 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2021-08-29 12:43:09,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 12:43:09,078 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:43:09,078 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:43:09,104 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 12:43:09,279 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,SelfDestructingSolverStorable3 [2021-08-29 12:43:09,279 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:43:09,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:43:09,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1779462740, now seen corresponding path program 1 times [2021-08-29 12:43:09,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:43:09,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882542671] [2021-08-29 12:43:09,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:09,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:43:09,289 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:43:09,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558463397] [2021-08-29 12:43:09,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:09,290 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:09,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:43:09,297 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 12:43:09,303 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 12:43:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:43:09,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-29 12:43:09,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:43:09,436 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 12:43:09,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:43:09,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:43:09,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882542671] [2021-08-29 12:43:09,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:43:09,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558463397] [2021-08-29 12:43:09,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558463397] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:43:09,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:43:09,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 12:43:09,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629417054] [2021-08-29 12:43:09,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 12:43:09,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:43:09,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 12:43:09,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-29 12:43:09,440 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 12:43:09,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:43:09,600 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2021-08-29 12:43:09,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 12:43:09,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 14 [2021-08-29 12:43:09,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:43:09,604 INFO L225 Difference]: With dead ends: 104 [2021-08-29 12:43:09,604 INFO L226 Difference]: Without dead ends: 96 [2021-08-29 12:43:09,605 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 38.88ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-29 12:43:09,605 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 74 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.25ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 118.02ms IncrementalHoareTripleChecker+Time [2021-08-29 12:43:09,605 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 0 Invalid, 165 Unknown, 0 Unchecked, 1.25ms Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 118.02ms Time] [2021-08-29 12:43:09,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-08-29 12:43:09,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 80. [2021-08-29 12:43:09,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 79 states have internal predecessors, (98), 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 12:43:09,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2021-08-29 12:43:09,616 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 14 [2021-08-29 12:43:09,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:43:09,616 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2021-08-29 12:43:09,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 12:43:09,616 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2021-08-29 12:43:09,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-29 12:43:09,617 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:43:09,617 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:43:09,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 12:43:09,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:09,831 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:43:09,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:43:09,832 INFO L82 PathProgramCache]: Analyzing trace with hash -801918668, now seen corresponding path program 1 times [2021-08-29 12:43:09,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:43:09,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175688487] [2021-08-29 12:43:09,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:09,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:43:09,841 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:43:09,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503720919] [2021-08-29 12:43:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:09,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:09,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:43:09,843 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 12:43:09,846 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 12:43:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:43:09,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-29 12:43:09,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:43:09,915 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 12:43:09,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:43:09,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:43:09,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175688487] [2021-08-29 12:43:09,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:43:09,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503720919] [2021-08-29 12:43:09,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503720919] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:43:09,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:43:09,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:43:09,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752017892] [2021-08-29 12:43:09,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:43:09,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:43:09,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:43:09,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:43:09,916 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:43:09,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:43:09,996 INFO L93 Difference]: Finished difference Result 108 states and 129 transitions. [2021-08-29 12:43:09,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:43:09,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-29 12:43:09,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:43:09,998 INFO L225 Difference]: With dead ends: 108 [2021-08-29 12:43:09,998 INFO L226 Difference]: Without dead ends: 106 [2021-08-29 12:43:09,999 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.57ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:43:09,999 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.56ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.26ms IncrementalHoareTripleChecker+Time [2021-08-29 12:43:09,999 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 133 Unknown, 0 Unchecked, 0.56ms Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 68.26ms Time] [2021-08-29 12:43:10,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-08-29 12:43:10,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 86. [2021-08-29 12:43:10,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 85 states have internal predecessors, (103), 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 12:43:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 103 transitions. [2021-08-29 12:43:10,006 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 103 transitions. Word has length 17 [2021-08-29 12:43:10,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:43:10,006 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 103 transitions. [2021-08-29 12:43:10,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:43:10,006 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 103 transitions. [2021-08-29 12:43:10,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 12:43:10,007 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:43:10,007 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:43:10,024 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 12:43:10,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:10,221 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:43:10,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:43:10,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1844536457, now seen corresponding path program 1 times [2021-08-29 12:43:10,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:43:10,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742739975] [2021-08-29 12:43:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:10,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:43:10,229 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:43:10,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924535531] [2021-08-29 12:43:10,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:10,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:10,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:43:10,234 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 12:43:10,239 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 12:43:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:43:10,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-29 12:43:10,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:43:10,363 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 12:43:10,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:43:10,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:43:10,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742739975] [2021-08-29 12:43:10,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:43:10,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924535531] [2021-08-29 12:43:10,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924535531] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:43:10,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:43:10,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 12:43:10,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375304364] [2021-08-29 12:43:10,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 12:43:10,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:43:10,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 12:43:10,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-29 12:43:10,366 INFO L87 Difference]: Start difference. First operand 86 states and 103 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 12:43:10,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:43:10,534 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2021-08-29 12:43:10,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 12:43:10,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2021-08-29 12:43:10,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:43:10,535 INFO L225 Difference]: With dead ends: 131 [2021-08-29 12:43:10,535 INFO L226 Difference]: Without dead ends: 123 [2021-08-29 12:43:10,536 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 40.61ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-08-29 12:43:10,536 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.96ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 118.80ms IncrementalHoareTripleChecker+Time [2021-08-29 12:43:10,536 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 259 Unknown, 0 Unchecked, 1.96ms Time], IncrementalHoareTripleChecker [10 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 118.80ms Time] [2021-08-29 12:43:10,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-08-29 12:43:10,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 93. [2021-08-29 12:43:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 86 states have (on average 1.2906976744186047) internal successors, (111), 92 states have internal predecessors, (111), 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 12:43:10,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 111 transitions. [2021-08-29 12:43:10,548 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 111 transitions. Word has length 19 [2021-08-29 12:43:10,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:43:10,549 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 111 transitions. [2021-08-29 12:43:10,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 12:43:10,550 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2021-08-29 12:43:10,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 12:43:10,553 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:43:10,553 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:43:10,572 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 12:43:10,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:10,770 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:43:10,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:43:10,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1795587856, now seen corresponding path program 1 times [2021-08-29 12:43:10,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:43:10,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932075475] [2021-08-29 12:43:10,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:10,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:43:10,778 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:43:10,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560481741] [2021-08-29 12:43:10,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:10,779 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:10,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:43:10,780 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 12:43:10,789 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 12:43:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:43:10,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-29 12:43:10,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:43:10,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-29 12:43:10,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:43:11,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:43:11,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:43:11,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932075475] [2021-08-29 12:43:11,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:43:11,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560481741] [2021-08-29 12:43:11,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560481741] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:43:11,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:43:11,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 6 [2021-08-29 12:43:11,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879761532] [2021-08-29 12:43:11,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 12:43:11,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:43:11,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 12:43:11,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=17, Unknown=1, NotChecked=0, Total=30 [2021-08-29 12:43:11,252 INFO L87 Difference]: Start difference. First operand 93 states and 111 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:43:11,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:43:11,318 INFO L93 Difference]: Finished difference Result 103 states and 116 transitions. [2021-08-29 12:43:11,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:43:11,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-08-29 12:43:11,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:43:11,319 INFO L225 Difference]: With dead ends: 103 [2021-08-29 12:43:11,319 INFO L226 Difference]: Without dead ends: 93 [2021-08-29 12:43:11,320 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 219.45ms TimeCoverageRelationStatistics Valid=18, Invalid=23, Unknown=1, NotChecked=0, Total=42 [2021-08-29 12:43:11,320 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.61ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 51.64ms IncrementalHoareTripleChecker+Time [2021-08-29 12:43:11,320 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 158 Unknown, 0 Unchecked, 0.61ms Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 59 Unchecked, 51.64ms Time] [2021-08-29 12:43:11,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-29 12:43:11,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2021-08-29 12:43:11,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 80 states have (on average 1.275) internal successors, (102), 86 states have internal predecessors, (102), 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 12:43:11,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2021-08-29 12:43:11,328 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 19 [2021-08-29 12:43:11,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:43:11,328 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2021-08-29 12:43:11,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:43:11,328 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2021-08-29 12:43:11,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-29 12:43:11,329 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:43:11,329 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:43:11,365 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 12:43:11,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:11,545 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:43:11,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:43:11,545 INFO L82 PathProgramCache]: Analyzing trace with hash 171335487, now seen corresponding path program 1 times [2021-08-29 12:43:11,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:43:11,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068489143] [2021-08-29 12:43:11,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:11,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:43:11,552 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:43:11,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343847467] [2021-08-29 12:43:11,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:11,553 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:11,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:43:11,556 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:43:11,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-29 12:43:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:43:11,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-29 12:43:11,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:43:11,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:43:11,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:43:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:43:11,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:43:11,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068489143] [2021-08-29 12:43:11,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:43:11,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343847467] [2021-08-29 12:43:11,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343847467] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:43:11,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:43:11,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-08-29 12:43:11,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296634619] [2021-08-29 12:43:11,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-29 12:43:11,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:43:11,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-29 12:43:11,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-29 12:43:11,693 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 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 12:43:11,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:43:11,823 INFO L93 Difference]: Finished difference Result 209 states and 245 transitions. [2021-08-29 12:43:11,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-29 12:43:11,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 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) Word has length 20 [2021-08-29 12:43:11,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:43:11,825 INFO L225 Difference]: With dead ends: 209 [2021-08-29 12:43:11,825 INFO L226 Difference]: Without dead ends: 183 [2021-08-29 12:43:11,825 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 26.41ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-29 12:43:11,827 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 69 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.94ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.29ms IncrementalHoareTripleChecker+Time [2021-08-29 12:43:11,827 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 226 Unknown, 0 Unchecked, 1.94ms Time], IncrementalHoareTripleChecker [5 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 97.29ms Time] [2021-08-29 12:43:11,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-08-29 12:43:11,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 145. [2021-08-29 12:43:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 138 states have (on average 1.2753623188405796) internal successors, (176), 144 states have internal predecessors, (176), 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 12:43:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 176 transitions. [2021-08-29 12:43:11,853 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 176 transitions. Word has length 20 [2021-08-29 12:43:11,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:43:11,853 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 176 transitions. [2021-08-29 12:43:11,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 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 12:43:11,853 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 176 transitions. [2021-08-29 12:43:11,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-29 12:43:11,855 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:43:11,855 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:43:11,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-29 12:43:12,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:12,073 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:43:12,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:43:12,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1017079379, now seen corresponding path program 1 times [2021-08-29 12:43:12,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:43:12,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125886562] [2021-08-29 12:43:12,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:12,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:43:12,081 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:43:12,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588088319] [2021-08-29 12:43:12,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:12,081 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:12,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:43:12,083 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:43:12,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-29 12:43:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:43:12,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 40 conjunts are in the unsatisfiable core [2021-08-29 12:43:12,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:43:12,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:43:12,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:43:12,587 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 12:43:12,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:43:12,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125886562] [2021-08-29 12:43:12,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:43:12,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588088319] [2021-08-29 12:43:12,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588088319] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:43:12,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:43:12,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-08-29 12:43:12,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703721787] [2021-08-29 12:43:12,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-29 12:43:12,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:43:12,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-29 12:43:12,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-08-29 12:43:12,590 INFO L87 Difference]: Start difference. First operand 145 states and 176 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 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 12:43:13,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:43:13,183 INFO L93 Difference]: Finished difference Result 180 states and 218 transitions. [2021-08-29 12:43:13,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-29 12:43:13,183 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 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) Word has length 21 [2021-08-29 12:43:13,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:43:13,184 INFO L225 Difference]: With dead ends: 180 [2021-08-29 12:43:13,184 INFO L226 Difference]: Without dead ends: 164 [2021-08-29 12:43:13,184 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 313.26ms TimeCoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2021-08-29 12:43:13,185 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 237 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 325.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.89ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 349.06ms IncrementalHoareTripleChecker+Time [2021-08-29 12:43:13,185 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 0 Invalid, 264 Unknown, 0 Unchecked, 1.89ms Time], IncrementalHoareTripleChecker [86 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 349.06ms Time] [2021-08-29 12:43:13,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-08-29 12:43:13,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 115. [2021-08-29 12:43:13,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 111 states have (on average 1.1711711711711712) internal successors, (130), 114 states have internal predecessors, (130), 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 12:43:13,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2021-08-29 12:43:13,193 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 21 [2021-08-29 12:43:13,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:43:13,193 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2021-08-29 12:43:13,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 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 12:43:13,193 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2021-08-29 12:43:13,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-29 12:43:13,193 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:43:13,194 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:43:13,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-29 12:43:13,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-29 12:43:13,401 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:43:13,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:43:13,402 INFO L82 PathProgramCache]: Analyzing trace with hash -559475920, now seen corresponding path program 1 times [2021-08-29 12:43:13,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:43:13,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359985511] [2021-08-29 12:43:13,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:13,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:43:13,408 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:43:13,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544017072] [2021-08-29 12:43:13,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:13,409 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:13,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:43:13,409 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:43:13,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-29 12:43:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:43:13,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-29 12:43:13,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:43:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:43:13,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:43:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-08-29 12:43:13,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:43:13,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359985511] [2021-08-29 12:43:13,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:43:13,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544017072] [2021-08-29 12:43:13,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544017072] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:43:13,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:43:13,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2021-08-29 12:43:13,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115230264] [2021-08-29 12:43:13,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 12:43:13,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:43:13,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 12:43:13,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-29 12:43:13,711 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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 12:43:13,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:43:13,869 INFO L93 Difference]: Finished difference Result 130 states and 148 transitions. [2021-08-29 12:43:13,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-29 12:43:13,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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 28 [2021-08-29 12:43:13,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:43:13,871 INFO L225 Difference]: With dead ends: 130 [2021-08-29 12:43:13,871 INFO L226 Difference]: Without dead ends: 114 [2021-08-29 12:43:13,871 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 55.32ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-08-29 12:43:13,871 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.95ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.90ms IncrementalHoareTripleChecker+Time [2021-08-29 12:43:13,872 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 201 Unknown, 0 Unchecked, 0.95ms Time], IncrementalHoareTripleChecker [5 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 112.90ms Time] [2021-08-29 12:43:13,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-08-29 12:43:13,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 52. [2021-08-29 12:43:13,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 1.12) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:43:13,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2021-08-29 12:43:13,881 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 28 [2021-08-29 12:43:13,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:43:13,882 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2021-08-29 12:43:13,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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 12:43:13,882 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2021-08-29 12:43:13,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-29 12:43:13,883 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:43:13,883 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:43:13,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-29 12:43:14,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:14,101 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:43:14,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:43:14,101 INFO L82 PathProgramCache]: Analyzing trace with hash -309462655, now seen corresponding path program 2 times [2021-08-29 12:43:14,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:43:14,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563045752] [2021-08-29 12:43:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:14,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:43:14,110 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:43:14,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597766002] [2021-08-29 12:43:14,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 12:43:14,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:14,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:43:14,119 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:43:14,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-29 12:43:14,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 12:43:14,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 12:43:14,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-29 12:43:14,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:43:14,321 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:43:14,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:43:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:43:14,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:43:14,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563045752] [2021-08-29 12:43:14,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:43:14,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597766002] [2021-08-29 12:43:14,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597766002] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:43:14,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:43:14,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-08-29 12:43:14,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019001733] [2021-08-29 12:43:14,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-29 12:43:14,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:43:14,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-29 12:43:14,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-08-29 12:43:14,456 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 14 states, 14 states have (on average 6.5) internal successors, (91), 13 states have internal predecessors, (91), 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 12:43:14,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:43:14,684 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2021-08-29 12:43:14,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-29 12:43:14,684 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 13 states have internal predecessors, (91), 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 47 [2021-08-29 12:43:14,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:43:14,685 INFO L225 Difference]: With dead ends: 114 [2021-08-29 12:43:14,685 INFO L226 Difference]: Without dead ends: 106 [2021-08-29 12:43:14,686 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 124.29ms TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2021-08-29 12:43:14,686 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.47ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 130.66ms IncrementalHoareTripleChecker+Time [2021-08-29 12:43:14,687 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 178 Unknown, 0 Unchecked, 1.47ms Time], IncrementalHoareTripleChecker [13 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 130.66ms Time] [2021-08-29 12:43:14,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-08-29 12:43:14,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-08-29 12:43:14,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 104 states have (on average 1.1153846153846154) internal successors, (116), 105 states have internal predecessors, (116), 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 12:43:14,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2021-08-29 12:43:14,699 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 47 [2021-08-29 12:43:14,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:43:14,700 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2021-08-29 12:43:14,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 13 states have internal predecessors, (91), 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 12:43:14,700 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2021-08-29 12:43:14,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-08-29 12:43:14,701 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:43:14,701 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:43:14,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-29 12:43:14,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-29 12:43:14,917 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:43:14,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:43:14,918 INFO L82 PathProgramCache]: Analyzing trace with hash 2135431873, now seen corresponding path program 3 times [2021-08-29 12:43:14,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:43:14,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170531469] [2021-08-29 12:43:14,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:14,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:43:14,946 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:43:14,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1780474581] [2021-08-29 12:43:14,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-29 12:43:14,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:14,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:43:14,947 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:43:15,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-29 12:43:15,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-08-29 12:43:15,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 12:43:15,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-29 12:43:15,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:43:15,412 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:43:15,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:43:15,708 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:43:15,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:43:15,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170531469] [2021-08-29 12:43:15,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:43:15,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780474581] [2021-08-29 12:43:15,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780474581] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:43:15,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:43:15,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2021-08-29 12:43:15,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745994723] [2021-08-29 12:43:15,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-29 12:43:15,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:43:15,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-29 12:43:15,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2021-08-29 12:43:15,711 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand has 26 states, 26 states have (on average 7.653846153846154) internal successors, (199), 25 states have internal predecessors, (199), 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 12:43:16,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:43:16,191 INFO L93 Difference]: Finished difference Result 222 states and 255 transitions. [2021-08-29 12:43:16,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-29 12:43:16,192 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.653846153846154) internal successors, (199), 25 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-08-29 12:43:16,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:43:16,194 INFO L225 Difference]: With dead ends: 222 [2021-08-29 12:43:16,194 INFO L226 Difference]: Without dead ends: 214 [2021-08-29 12:43:16,195 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 358.37ms TimeCoverageRelationStatistics Valid=796, Invalid=1366, Unknown=0, NotChecked=0, Total=2162 [2021-08-29 12:43:16,197 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 128 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 167.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.41ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 201.70ms IncrementalHoareTripleChecker+Time [2021-08-29 12:43:16,197 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 0 Invalid, 371 Unknown, 0 Unchecked, 3.41ms Time], IncrementalHoareTripleChecker [23 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 201.70ms Time] [2021-08-29 12:43:16,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-08-29 12:43:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-08-29 12:43:16,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 212 states have (on average 1.1132075471698113) internal successors, (236), 213 states have internal predecessors, (236), 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 12:43:16,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 236 transitions. [2021-08-29 12:43:16,219 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 236 transitions. Word has length 101 [2021-08-29 12:43:16,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:43:16,220 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 236 transitions. [2021-08-29 12:43:16,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.653846153846154) internal successors, (199), 25 states have internal predecessors, (199), 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 12:43:16,221 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 236 transitions. [2021-08-29 12:43:16,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-08-29 12:43:16,229 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:43:16,229 INFO L513 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:43:16,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-29 12:43:16,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-29 12:43:16,445 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:43:16,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:43:16,445 INFO L82 PathProgramCache]: Analyzing trace with hash -555217599, now seen corresponding path program 4 times [2021-08-29 12:43:16,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:43:16,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986255019] [2021-08-29 12:43:16,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:16,445 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:43:16,453 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:43:16,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507839716] [2021-08-29 12:43:16,453 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-29 12:43:16,453 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:16,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:43:16,456 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:43:16,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-29 12:43:16,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-29 12:43:16,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 12:43:16,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 47 conjunts are in the unsatisfiable core [2021-08-29 12:43:16,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:43:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2123 backedges. 0 proven. 2123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:43:17,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:43:18,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2123 backedges. 0 proven. 2123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:43:18,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:43:18,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986255019] [2021-08-29 12:43:18,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:43:18,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507839716] [2021-08-29 12:43:18,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507839716] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:43:18,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:43:18,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2021-08-29 12:43:18,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729833959] [2021-08-29 12:43:18,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-08-29 12:43:18,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:43:18,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-08-29 12:43:18,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1133, Invalid=1317, Unknown=0, NotChecked=0, Total=2450 [2021-08-29 12:43:18,187 INFO L87 Difference]: Start difference. First operand 214 states and 236 transitions. Second operand has 50 states, 50 states have (on average 8.3) internal successors, (415), 49 states have internal predecessors, (415), 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 12:43:19,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:43:19,626 INFO L93 Difference]: Finished difference Result 438 states and 507 transitions. [2021-08-29 12:43:19,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-08-29 12:43:19,627 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 8.3) internal successors, (415), 49 states have internal predecessors, (415), 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 209 [2021-08-29 12:43:19,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:43:19,629 INFO L225 Difference]: With dead ends: 438 [2021-08-29 12:43:19,629 INFO L226 Difference]: Without dead ends: 430 [2021-08-29 12:43:19,632 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 1495.93ms TimeCoverageRelationStatistics Valid=3316, Invalid=5614, Unknown=0, NotChecked=0, Total=8930 [2021-08-29 12:43:19,633 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 340 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 395.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.93ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 500.27ms IncrementalHoareTripleChecker+Time [2021-08-29 12:43:19,633 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 0 Invalid, 626 Unknown, 0 Unchecked, 4.93ms Time], IncrementalHoareTripleChecker [54 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 500.27ms Time] [2021-08-29 12:43:19,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-08-29 12:43:19,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2021-08-29 12:43:19,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 428 states have (on average 1.1121495327102804) internal successors, (476), 429 states have internal predecessors, (476), 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 12:43:19,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 476 transitions. [2021-08-29 12:43:19,660 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 476 transitions. Word has length 209 [2021-08-29 12:43:19,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:43:19,661 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 476 transitions. [2021-08-29 12:43:19,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 8.3) internal successors, (415), 49 states have internal predecessors, (415), 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 12:43:19,661 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 476 transitions. [2021-08-29 12:43:19,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2021-08-29 12:43:19,665 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:43:19,665 INFO L513 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:43:19,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-29 12:43:19,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-08-29 12:43:19,881 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:43:19,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:43:19,881 INFO L82 PathProgramCache]: Analyzing trace with hash -427380159, now seen corresponding path program 5 times [2021-08-29 12:43:19,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:43:19,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959032441] [2021-08-29 12:43:19,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:43:19,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:43:19,905 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:43:19,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008810356] [2021-08-29 12:43:19,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-29 12:43:19,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:43:19,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:43:19,921 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:43:19,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-29 12:44:35,792 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-08-29 12:44:35,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 12:44:35,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 1363 conjuncts, 95 conjunts are in the unsatisfiable core [2021-08-29 12:44:35,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:44:37,266 INFO L134 CoverageAnalysis]: Checked inductivity of 9407 backedges. 0 proven. 9407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:44:37,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:44:38,122 INFO L134 CoverageAnalysis]: Checked inductivity of 9407 backedges. 0 proven. 9407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:44:38,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:44:38,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959032441] [2021-08-29 12:44:38,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:44:38,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008810356] [2021-08-29 12:44:38,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008810356] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:44:38,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:44:38,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 53 [2021-08-29 12:44:38,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430145245] [2021-08-29 12:44:38,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-08-29 12:44:38,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:44:38,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-08-29 12:44:38,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=1531, Unknown=0, NotChecked=0, Total=2862 [2021-08-29 12:44:38,127 INFO L87 Difference]: Start difference. First operand 430 states and 476 transitions. Second operand has 54 states, 54 states have (on average 8.518518518518519) internal successors, (460), 53 states have internal predecessors, (460), 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 12:44:39,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:44:39,515 INFO L93 Difference]: Finished difference Result 474 states and 527 transitions. [2021-08-29 12:44:39,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-08-29 12:44:39,515 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 8.518518518518519) internal successors, (460), 53 states have internal predecessors, (460), 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 425 [2021-08-29 12:44:39,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:44:39,517 INFO L225 Difference]: With dead ends: 474 [2021-08-29 12:44:39,517 INFO L226 Difference]: Without dead ends: 466 [2021-08-29 12:44:39,520 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 795 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 1620.82ms TimeCoverageRelationStatistics Valid=3926, Invalid=6580, Unknown=0, NotChecked=0, Total=10506 [2021-08-29 12:44:39,521 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 213 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 326.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.75ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 403.32ms IncrementalHoareTripleChecker+Time [2021-08-29 12:44:39,521 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 0 Invalid, 570 Unknown, 0 Unchecked, 2.75ms Time], IncrementalHoareTripleChecker [5 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 403.32ms Time] [2021-08-29 12:44:39,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-08-29 12:44:39,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2021-08-29 12:44:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 464 states have (on average 1.1120689655172413) internal successors, (516), 465 states have internal predecessors, (516), 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 12:44:39,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 516 transitions. [2021-08-29 12:44:39,555 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 516 transitions. Word has length 425 [2021-08-29 12:44:39,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:44:39,555 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 516 transitions. [2021-08-29 12:44:39,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 8.518518518518519) internal successors, (460), 53 states have internal predecessors, (460), 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 12:44:39,556 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 516 transitions. [2021-08-29 12:44:39,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-08-29 12:44:39,560 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:44:39,560 INFO L513 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:44:39,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-29 12:44:39,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-08-29 12:44:39,773 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:44:39,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:44:39,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1886868031, now seen corresponding path program 6 times [2021-08-29 12:44:39,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:44:39,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343223399] [2021-08-29 12:44:39,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:44:39,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:44:39,789 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:44:39,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909703805] [2021-08-29 12:44:39,789 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-29 12:44:39,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:44:39,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:44:39,790 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:44:39,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-29 12:44:40,712 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 51 check-sat command(s) [2021-08-29 12:44:40,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-08-29 12:44:40,712 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 12:44:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 12:44:40,998 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 12:44:40,998 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 12:44:40,999 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-08-29 12:44:41,000 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-08-29 12:44:41,000 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2021-08-29 12:44:41,000 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2021-08-29 12:44:41,001 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2021-08-29 12:44:41,001 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2021-08-29 12:44:41,001 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-08-29 12:44:41,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-29 12:44:41,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:44:41,214 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 12:44:41,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 12:44:41 BoogieIcfgContainer [2021-08-29 12:44:41,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 12:44:41,358 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 12:44:41,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 12:44:41,359 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 12:44:41,359 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:43:07" (3/4) ... [2021-08-29 12:44:41,361 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 12:44:41,475 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 12:44:41,475 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 12:44:41,476 INFO L158 Benchmark]: Toolchain (without parser) took 94742.54ms. Allocated memory was 62.9MB in the beginning and 111.1MB in the end (delta: 48.2MB). Free memory was 44.1MB in the beginning and 78.7MB in the end (delta: -34.6MB). Peak memory consumption was 70.7MB. Max. memory is 16.1GB. [2021-08-29 12:44:41,476 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 62.9MB. Free memory was 45.5MB in the beginning and 45.5MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:44:41,476 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.77ms. Allocated memory is still 62.9MB. Free memory was 43.8MB in the beginning and 46.5MB in the end (delta: -2.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 12:44:41,476 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.67ms. Allocated memory is still 62.9MB. Free memory was 46.3MB in the beginning and 44.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:44:41,477 INFO L158 Benchmark]: Boogie Preprocessor took 35.56ms. Allocated memory is still 62.9MB. Free memory was 44.6MB in the beginning and 43.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 12:44:41,477 INFO L158 Benchmark]: RCFGBuilder took 215.18ms. Allocated memory is still 62.9MB. Free memory was 43.4MB in the beginning and 34.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 12:44:41,477 INFO L158 Benchmark]: TraceAbstraction took 94158.47ms. Allocated memory was 62.9MB in the beginning and 111.1MB in the end (delta: 48.2MB). Free memory was 33.6MB in the beginning and 50.5MB in the end (delta: -16.9MB). Peak memory consumption was 59.7MB. Max. memory is 16.1GB. [2021-08-29 12:44:41,477 INFO L158 Benchmark]: Witness Printer took 116.72ms. Allocated memory is still 111.1MB. Free memory was 50.5MB in the beginning and 78.7MB in the end (delta: -28.2MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. [2021-08-29 12:44:41,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 62.9MB. Free memory was 45.5MB in the beginning and 45.5MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 179.77ms. Allocated memory is still 62.9MB. Free memory was 43.8MB in the beginning and 46.5MB in the end (delta: -2.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.67ms. Allocated memory is still 62.9MB. Free memory was 46.3MB in the beginning and 44.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.56ms. Allocated memory is still 62.9MB. Free memory was 44.6MB in the beginning and 43.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 215.18ms. Allocated memory is still 62.9MB. Free memory was 43.4MB in the beginning and 34.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 94158.47ms. Allocated memory was 62.9MB in the beginning and 111.1MB in the end (delta: 48.2MB). Free memory was 33.6MB in the beginning and 50.5MB in the end (delta: -16.9MB). Peak memory consumption was 59.7MB. Max. memory is 16.1GB. * Witness Printer took 116.72ms. Allocated memory is still 111.1MB. Free memory was 50.5MB in the beginning and 78.7MB in the end (delta: -28.2MB). Peak memory consumption was 29.5MB. 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: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(a != b)) VAL [counter=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(a != b)) VAL [counter=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=2] [L34] EXPR counter++ VAL [counter=3] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=3] [L11] COND FALSE !(!(cond)) VAL [counter=3] [L11] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(a != b)) VAL [counter=3] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=3] [L34] EXPR counter++ VAL [counter=4] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=4] [L11] COND FALSE !(!(cond)) VAL [counter=4] [L11] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(a != b)) VAL [counter=4] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=4] [L34] EXPR counter++ VAL [counter=5] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(a != b)) VAL [counter=5] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=5] [L34] EXPR counter++ VAL [counter=6] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=6] [L11] COND FALSE !(!(cond)) VAL [counter=6] [L11] COND FALSE !(!(cond)) VAL [counter=6] [L39] COND FALSE !(!(a != b)) VAL [counter=6] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=6] [L34] EXPR counter++ VAL [counter=7] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=7] [L11] COND FALSE !(!(cond)) VAL [counter=7] [L11] COND FALSE !(!(cond)) VAL [counter=7] [L39] COND FALSE !(!(a != b)) VAL [counter=7] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=7] [L34] EXPR counter++ VAL [counter=8] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=8] [L11] COND FALSE !(!(cond)) VAL [counter=8] [L11] COND FALSE !(!(cond)) VAL [counter=8] [L39] COND FALSE !(!(a != b)) VAL [counter=8] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=8] [L34] EXPR counter++ VAL [counter=9] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=9] [L11] COND FALSE !(!(cond)) VAL [counter=9] [L11] COND FALSE !(!(cond)) VAL [counter=9] [L39] COND FALSE !(!(a != b)) VAL [counter=9] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=9] [L34] EXPR counter++ VAL [counter=10] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=10] [L11] COND FALSE !(!(cond)) VAL [counter=10] [L11] COND FALSE !(!(cond)) VAL [counter=10] [L39] COND FALSE !(!(a != b)) VAL [counter=10] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=10] [L34] EXPR counter++ VAL [counter=11] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=11] [L11] COND FALSE !(!(cond)) VAL [counter=11] [L11] COND FALSE !(!(cond)) VAL [counter=11] [L39] COND FALSE !(!(a != b)) VAL [counter=11] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=11] [L34] EXPR counter++ VAL [counter=12] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=12] [L11] COND FALSE !(!(cond)) VAL [counter=12] [L11] COND FALSE !(!(cond)) VAL [counter=12] [L39] COND FALSE !(!(a != b)) VAL [counter=12] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=12] [L34] EXPR counter++ VAL [counter=13] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=13] [L11] COND FALSE !(!(cond)) VAL [counter=13] [L11] COND FALSE !(!(cond)) VAL [counter=13] [L39] COND FALSE !(!(a != b)) VAL [counter=13] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=13] [L34] EXPR counter++ VAL [counter=14] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=14] [L11] COND FALSE !(!(cond)) VAL [counter=14] [L11] COND FALSE !(!(cond)) VAL [counter=14] [L39] COND FALSE !(!(a != b)) VAL [counter=14] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=14] [L34] EXPR counter++ VAL [counter=15] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=15] [L11] COND FALSE !(!(cond)) VAL [counter=15] [L11] COND FALSE !(!(cond)) VAL [counter=15] [L39] COND FALSE !(!(a != b)) VAL [counter=15] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=15] [L34] EXPR counter++ VAL [counter=16] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=16] [L11] COND FALSE !(!(cond)) VAL [counter=16] [L11] COND FALSE !(!(cond)) VAL [counter=16] [L39] COND FALSE !(!(a != b)) VAL [counter=16] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=16] [L34] EXPR counter++ VAL [counter=17] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=17] [L11] COND FALSE !(!(cond)) VAL [counter=17] [L11] COND FALSE !(!(cond)) VAL [counter=17] [L39] COND FALSE !(!(a != b)) VAL [counter=17] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=17] [L34] EXPR counter++ VAL [counter=18] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=18] [L11] COND FALSE !(!(cond)) VAL [counter=18] [L11] COND FALSE !(!(cond)) VAL [counter=18] [L39] COND FALSE !(!(a != b)) VAL [counter=18] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=18] [L34] EXPR counter++ VAL [counter=19] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=19] [L11] COND FALSE !(!(cond)) VAL [counter=19] [L11] COND FALSE !(!(cond)) VAL [counter=19] [L39] COND FALSE !(!(a != b)) VAL [counter=19] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=19] [L34] EXPR counter++ VAL [counter=20] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=20] [L11] COND FALSE !(!(cond)) VAL [counter=20] [L11] COND FALSE !(!(cond)) VAL [counter=20] [L39] COND FALSE !(!(a != b)) VAL [counter=20] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=20] [L34] EXPR counter++ VAL [counter=21] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=21] [L11] COND FALSE !(!(cond)) VAL [counter=21] [L11] COND FALSE !(!(cond)) VAL [counter=21] [L39] COND FALSE !(!(a != b)) VAL [counter=21] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=21] [L34] EXPR counter++ VAL [counter=22] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=22] [L11] COND FALSE !(!(cond)) VAL [counter=22] [L11] COND FALSE !(!(cond)) VAL [counter=22] [L39] COND FALSE !(!(a != b)) VAL [counter=22] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=22] [L34] EXPR counter++ VAL [counter=23] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=23] [L11] COND FALSE !(!(cond)) VAL [counter=23] [L11] COND FALSE !(!(cond)) VAL [counter=23] [L39] COND FALSE !(!(a != b)) VAL [counter=23] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=23] [L34] EXPR counter++ VAL [counter=24] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=24] [L11] COND FALSE !(!(cond)) VAL [counter=24] [L11] COND FALSE !(!(cond)) VAL [counter=24] [L39] COND FALSE !(!(a != b)) VAL [counter=24] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=24] [L34] EXPR counter++ VAL [counter=25] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=25] [L11] COND FALSE !(!(cond)) VAL [counter=25] [L11] COND FALSE !(!(cond)) VAL [counter=25] [L39] COND FALSE !(!(a != b)) VAL [counter=25] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=25] [L34] EXPR counter++ VAL [counter=26] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=26] [L11] COND FALSE !(!(cond)) VAL [counter=26] [L11] COND FALSE !(!(cond)) VAL [counter=26] [L39] COND FALSE !(!(a != b)) VAL [counter=26] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=26] [L34] EXPR counter++ VAL [counter=27] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=27] [L11] COND FALSE !(!(cond)) VAL [counter=27] [L11] COND FALSE !(!(cond)) VAL [counter=27] [L39] COND FALSE !(!(a != b)) VAL [counter=27] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=27] [L34] EXPR counter++ VAL [counter=28] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=28] [L11] COND FALSE !(!(cond)) VAL [counter=28] [L11] COND FALSE !(!(cond)) VAL [counter=28] [L39] COND FALSE !(!(a != b)) VAL [counter=28] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=28] [L34] EXPR counter++ VAL [counter=29] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=29] [L11] COND FALSE !(!(cond)) VAL [counter=29] [L11] COND FALSE !(!(cond)) VAL [counter=29] [L39] COND FALSE !(!(a != b)) VAL [counter=29] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=29] [L34] EXPR counter++ VAL [counter=30] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=30] [L11] COND FALSE !(!(cond)) VAL [counter=30] [L11] COND FALSE !(!(cond)) VAL [counter=30] [L39] COND FALSE !(!(a != b)) VAL [counter=30] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=30] [L34] EXPR counter++ VAL [counter=31] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=31] [L11] COND FALSE !(!(cond)) VAL [counter=31] [L11] COND FALSE !(!(cond)) VAL [counter=31] [L39] COND FALSE !(!(a != b)) VAL [counter=31] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=31] [L34] EXPR counter++ VAL [counter=32] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=32] [L11] COND FALSE !(!(cond)) VAL [counter=32] [L11] COND FALSE !(!(cond)) VAL [counter=32] [L39] COND FALSE !(!(a != b)) VAL [counter=32] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=32] [L34] EXPR counter++ VAL [counter=33] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=33] [L11] COND FALSE !(!(cond)) VAL [counter=33] [L11] COND FALSE !(!(cond)) VAL [counter=33] [L39] COND FALSE !(!(a != b)) VAL [counter=33] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=33] [L34] EXPR counter++ VAL [counter=34] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=34] [L11] COND FALSE !(!(cond)) VAL [counter=34] [L11] COND FALSE !(!(cond)) VAL [counter=34] [L39] COND FALSE !(!(a != b)) VAL [counter=34] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=34] [L34] EXPR counter++ VAL [counter=35] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=35] [L11] COND FALSE !(!(cond)) VAL [counter=35] [L11] COND FALSE !(!(cond)) VAL [counter=35] [L39] COND FALSE !(!(a != b)) VAL [counter=35] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=35] [L34] EXPR counter++ VAL [counter=36] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=36] [L11] COND FALSE !(!(cond)) VAL [counter=36] [L11] COND FALSE !(!(cond)) VAL [counter=36] [L39] COND FALSE !(!(a != b)) VAL [counter=36] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=36] [L34] EXPR counter++ VAL [counter=37] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=37] [L11] COND FALSE !(!(cond)) VAL [counter=37] [L11] COND FALSE !(!(cond)) VAL [counter=37] [L39] COND FALSE !(!(a != b)) VAL [counter=37] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=37] [L34] EXPR counter++ VAL [counter=38] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=38] [L11] COND FALSE !(!(cond)) VAL [counter=38] [L11] COND FALSE !(!(cond)) VAL [counter=38] [L39] COND FALSE !(!(a != b)) VAL [counter=38] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=38] [L34] EXPR counter++ VAL [counter=39] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=39] [L11] COND FALSE !(!(cond)) VAL [counter=39] [L11] COND FALSE !(!(cond)) VAL [counter=39] [L39] COND FALSE !(!(a != b)) VAL [counter=39] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=39] [L34] EXPR counter++ VAL [counter=40] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=40] [L11] COND FALSE !(!(cond)) VAL [counter=40] [L11] COND FALSE !(!(cond)) VAL [counter=40] [L39] COND FALSE !(!(a != b)) VAL [counter=40] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=40] [L34] EXPR counter++ VAL [counter=41] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=41] [L11] COND FALSE !(!(cond)) VAL [counter=41] [L11] COND FALSE !(!(cond)) VAL [counter=41] [L39] COND FALSE !(!(a != b)) VAL [counter=41] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=41] [L34] EXPR counter++ VAL [counter=42] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=42] [L11] COND FALSE !(!(cond)) VAL [counter=42] [L11] COND FALSE !(!(cond)) VAL [counter=42] [L39] COND FALSE !(!(a != b)) VAL [counter=42] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=42] [L34] EXPR counter++ VAL [counter=43] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=43] [L11] COND FALSE !(!(cond)) VAL [counter=43] [L11] COND FALSE !(!(cond)) VAL [counter=43] [L39] COND FALSE !(!(a != b)) VAL [counter=43] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=43] [L34] EXPR counter++ VAL [counter=44] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=44] [L11] COND FALSE !(!(cond)) VAL [counter=44] [L11] COND FALSE !(!(cond)) VAL [counter=44] [L39] COND FALSE !(!(a != b)) VAL [counter=44] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=44] [L34] EXPR counter++ VAL [counter=45] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=45] [L11] COND FALSE !(!(cond)) VAL [counter=45] [L11] COND FALSE !(!(cond)) VAL [counter=45] [L39] COND FALSE !(!(a != b)) VAL [counter=45] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=45] [L34] EXPR counter++ VAL [counter=46] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=46] [L11] COND FALSE !(!(cond)) VAL [counter=46] [L11] COND FALSE !(!(cond)) VAL [counter=46] [L39] COND FALSE !(!(a != b)) VAL [counter=46] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=46] [L34] EXPR counter++ VAL [counter=47] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=47] [L11] COND FALSE !(!(cond)) VAL [counter=47] [L11] COND FALSE !(!(cond)) VAL [counter=47] [L39] COND FALSE !(!(a != b)) VAL [counter=47] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=47] [L34] EXPR counter++ VAL [counter=48] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=48] [L11] COND FALSE !(!(cond)) VAL [counter=48] [L11] COND FALSE !(!(cond)) VAL [counter=48] [L39] COND FALSE !(!(a != b)) VAL [counter=48] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=48] [L34] EXPR counter++ VAL [counter=49] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=49] [L11] COND FALSE !(!(cond)) VAL [counter=49] [L11] COND FALSE !(!(cond)) VAL [counter=49] [L39] COND FALSE !(!(a != b)) VAL [counter=49] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=49] [L34] EXPR counter++ VAL [counter=50] [L34] COND TRUE counter++<50 [L11] COND FALSE !(!(cond)) VAL [counter=50] [L11] COND FALSE !(!(cond)) VAL [counter=50] [L11] COND FALSE !(!(cond)) VAL [counter=50] [L39] COND FALSE !(!(a != b)) VAL [counter=50] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=50] [L34] EXPR counter++ VAL [counter=51] [L34] COND FALSE !(counter++<50) [L11] COND TRUE !(cond) VAL [counter=51] [L13] reach_error() VAL [counter=51] - UnprovableResult [Line: 13]: 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: 13]: 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: 13]: 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: 13]: 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: 13]: 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: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 93958.23ms, OverallIterations: 16, TraceHistogramMax: 51, EmptinessCheckTime: 41.71ms, AutomataDifference: 5562.37ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 11.31ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1542 SdHoareTripleChecker+Valid, 2504.95ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1542 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2041.18ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 59 IncrementalHoareTripleChecker+Unchecked, 1998 mSDsCounter, 224 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3274 IncrementalHoareTripleChecker+Invalid, 3557 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 224 mSolverCounterUnsat, 0 mSDtfsCounter, 3274 mSolverCounterSat, 31.96ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1952 GetRequests, 1614 SyntacticMatches, 5 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2974 ImplicationChecksByTransitivity, 4451.00ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=466occurred in iteration=15, InterpolantAutomatonStates: 335, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 215.44ms AutomataMinimizationTime, 15 MinimizatonAttempts, 243 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 197.28ms SsaConstructionTime, 77025.59ms SatisfiabilityAnalysisTime, 6768.99ms InterpolantComputationTime, 1424 NumberOfCodeBlocks, 1424 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 1810 ConstructedInterpolants, 11 QuantifiedInterpolants, 6362 SizeOfPredicates, 144 NumberOfNonLiveVariables, 3470 ConjunctsInSsa, 308 ConjunctsInUnsatCore, 23 InterpolantComputations, 7 PerfectInterpolantSequences, 21/24084 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 12:44:41,500 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...