./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound10.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 185c54f639ed5dec8479e2c0edfdf0b3f14484bd ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 12:02:28,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 12:02:28,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 12:02:28,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 12:02:28,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 12:02:28,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 12:02:28,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 12:02:28,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 12:02:28,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 12:02:28,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 12:02:28,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 12:02:28,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 12:02:28,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 12:02:28,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 12:02:28,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 12:02:28,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 12:02:28,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 12:02:28,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 12:02:28,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 12:02:28,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 12:02:28,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 12:02:28,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 12:02:28,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 12:02:28,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 12:02:28,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 12:02:28,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 12:02:28,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 12:02:28,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 12:02:28,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 12:02:28,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 12:02:28,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 12:02:28,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 12:02:28,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 12:02:28,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 12:02:28,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 12:02:28,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 12:02:28,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 12:02:28,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 12:02:28,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 12:02:28,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 12:02:28,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 12:02:28,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 12:02:28,521 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 12:02:28,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 12:02:28,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 12:02:28,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 12:02:28,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 12:02:28,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 12:02:28,525 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 12:02:28,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 12:02:28,525 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 12:02:28,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 12:02:28,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 12:02:28,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 12:02:28,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 12:02:28,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 12:02:28,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 12:02:28,527 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 12:02:28,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 12:02:28,528 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 12:02:28,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 12:02:28,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 12:02:28,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 12:02:28,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 12:02:28,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:02:28,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 12:02:28,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 12:02:28,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 12:02:28,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 12:02:28,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 12:02:28,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 12:02:28,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 12:02:28,530 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 185c54f639ed5dec8479e2c0edfdf0b3f14484bd [2021-08-29 12:02:28,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 12:02:28,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 12:02:28,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 12:02:28,888 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 12:02:28,888 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 12:02:28,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound10.c [2021-08-29 12:02:28,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb1d460e2/af68f8aab46247d2b76cce45197a0d47/FLAGf40ad248a [2021-08-29 12:02:29,315 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 12:02:29,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound10.c [2021-08-29 12:02:29,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb1d460e2/af68f8aab46247d2b76cce45197a0d47/FLAGf40ad248a [2021-08-29 12:02:29,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb1d460e2/af68f8aab46247d2b76cce45197a0d47 [2021-08-29 12:02:29,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 12:02:29,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 12:02:29,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 12:02:29,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 12:02:29,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 12:02:29,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:02:29" (1/1) ... [2021-08-29 12:02:29,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61973931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:29, skipping insertion in model container [2021-08-29 12:02:29,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:02:29" (1/1) ... [2021-08-29 12:02:29,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 12:02:29,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 12:02:29,929 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound10.c[596,609] [2021-08-29 12:02:29,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:02:29,982 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 12:02:29,996 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound10.c[596,609] [2021-08-29 12:02:30,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:02:30,074 INFO L208 MainTranslator]: Completed translation [2021-08-29 12:02:30,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:30 WrapperNode [2021-08-29 12:02:30,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 12:02:30,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 12:02:30,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 12:02:30,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 12:02:30,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:30" (1/1) ... [2021-08-29 12:02:30,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:30" (1/1) ... [2021-08-29 12:02:30,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 12:02:30,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 12:02:30,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 12:02:30,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 12:02:30,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:30" (1/1) ... [2021-08-29 12:02:30,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:30" (1/1) ... [2021-08-29 12:02:30,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:30" (1/1) ... [2021-08-29 12:02:30,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:30" (1/1) ... [2021-08-29 12:02:30,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:30" (1/1) ... [2021-08-29 12:02:30,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:30" (1/1) ... [2021-08-29 12:02:30,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:30" (1/1) ... [2021-08-29 12:02:30,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 12:02:30,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 12:02:30,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 12:02:30,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 12:02:30,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:30" (1/1) ... [2021-08-29 12:02:30,165 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:02:30,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:30,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 12:02:30,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 12:02:30,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 12:02:30,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_short [2021-08-29 12:02:30,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 12:02:30,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 12:02:30,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 12:02:30,415 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 12:02:30,415 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-08-29 12:02:30,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:02:30 BoogieIcfgContainer [2021-08-29 12:02:30,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 12:02:30,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 12:02:30,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 12:02:30,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 12:02:30,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 12:02:29" (1/3) ... [2021-08-29 12:02:30,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b0d9f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:02:30, skipping insertion in model container [2021-08-29 12:02:30,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:30" (2/3) ... [2021-08-29 12:02:30,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b0d9f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:02:30, skipping insertion in model container [2021-08-29 12:02:30,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:02:30" (3/3) ... [2021-08-29 12:02:30,425 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound10.c [2021-08-29 12:02:30,433 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 12:02:30,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-08-29 12:02:30,489 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 12:02:30,500 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 12:02:30,500 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-29 12:02:30,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 40 states have (on average 1.625) internal successors, (65), 51 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:30,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 12:02:30,523 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:30,523 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 12:02:30,524 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:30,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:30,534 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-08-29 12:02:30,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:30,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453741861] [2021-08-29 12:02:30,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:30,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:02:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:30,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:30,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453741861] [2021-08-29 12:02:30,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453741861] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:02:30,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:02:30,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:02:30,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958228273] [2021-08-29 12:02:30,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:02:30,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:30,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:02:30,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:02:30,868 INFO L87 Difference]: Start difference. First operand has 52 states, 40 states have (on average 1.625) internal successors, (65), 51 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:31,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:31,077 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2021-08-29 12:02:31,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:02:31,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-29 12:02:31,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:31,086 INFO L225 Difference]: With dead ends: 101 [2021-08-29 12:02:31,086 INFO L226 Difference]: Without dead ends: 47 [2021-08-29 12:02:31,091 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.68ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:02:31,101 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 141.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.39ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 167.49ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:31,105 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 107 Unknown, 0 Unchecked, 2.39ms Time], IncrementalHoareTripleChecker [22 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 167.49ms Time] [2021-08-29 12:02:31,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-08-29 12:02:31,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2021-08-29 12:02:31,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 43 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:31,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-08-29 12:02:31,133 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 6 [2021-08-29 12:02:31,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:31,133 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-08-29 12:02:31,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:31,134 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-08-29 12:02:31,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 12:02:31,135 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:31,135 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:02:31,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 12:02:31,135 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:31,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:31,136 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-08-29 12:02:31,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:31,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156042686] [2021-08-29 12:02:31,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:31,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:31,149 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:31,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796696485] [2021-08-29 12:02:31,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:31,150 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:31,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:31,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:02:31,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 12:02:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:02:31,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 12:02:31,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:02:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:31,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:02:31,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:31,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156042686] [2021-08-29 12:02:31,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:02:31,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796696485] [2021-08-29 12:02:31,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796696485] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:02:31,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:02:31,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:02:31,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436257382] [2021-08-29 12:02:31,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:02:31,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:31,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:02:31,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:02:31,351 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:31,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:31,546 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2021-08-29 12:02:31,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:02:31,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-29 12:02:31,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:31,551 INFO L225 Difference]: With dead ends: 86 [2021-08-29 12:02:31,552 INFO L226 Difference]: Without dead ends: 84 [2021-08-29 12:02:31,554 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.71ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:02:31,556 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.14ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 155.51ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:31,557 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 135 Unknown, 0 Unchecked, 2.14ms Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 155.51ms Time] [2021-08-29 12:02:31,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-29 12:02:31,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 49. [2021-08-29 12:02:31,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.275) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:31,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2021-08-29 12:02:31,582 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 8 [2021-08-29 12:02:31,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:31,583 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2021-08-29 12:02:31,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2021-08-29 12:02:31,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 12:02:31,586 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:31,586 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:02:31,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 12:02:31,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:31,805 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:31,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:31,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1269812074, now seen corresponding path program 1 times [2021-08-29 12:02:31,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:31,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487382705] [2021-08-29 12:02:31,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:31,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:31,817 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:31,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859029473] [2021-08-29 12:02:31,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:31,818 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:31,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:31,819 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:02:31,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 12:02:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:02:31,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-29 12:02:31,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:02:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:31,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:02:31,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:31,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487382705] [2021-08-29 12:02:31,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:02:31,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859029473] [2021-08-29 12:02:31,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859029473] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:02:31,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:02:31,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 12:02:31,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681029620] [2021-08-29 12:02:31,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:02:31,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:31,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:02:31,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:02:31,917 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:32,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:32,029 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2021-08-29 12:02:32,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:02:32,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-29 12:02:32,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:32,030 INFO L225 Difference]: With dead ends: 71 [2021-08-29 12:02:32,030 INFO L226 Difference]: Without dead ends: 49 [2021-08-29 12:02:32,030 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.52ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:02:32,031 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.09ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 101.11ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:32,032 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 133 Unknown, 0 Unchecked, 1.09ms Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 101.11ms Time] [2021-08-29 12:02:32,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-08-29 12:02:32,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-08-29 12:02:32,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.25) internal successors, (50), 48 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:32,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-08-29 12:02:32,039 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 9 [2021-08-29 12:02:32,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:32,040 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-08-29 12:02:32,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:32,041 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-08-29 12:02:32,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 12:02:32,041 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:32,042 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:02:32,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-08-29 12:02:32,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-29 12:02:32,254 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:32,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:32,255 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-08-29 12:02:32,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:32,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217426010] [2021-08-29 12:02:32,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:32,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:32,266 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:32,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616169965] [2021-08-29 12:02:32,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:32,267 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:32,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:32,268 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:02:32,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 12:02:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:02:32,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 12:02:32,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:02:32,363 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 12:02:32,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:02:32,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:32,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217426010] [2021-08-29 12:02:32,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:02:32,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616169965] [2021-08-29 12:02:32,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616169965] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:02:32,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:02:32,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:02:32,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396007376] [2021-08-29 12:02:32,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:02:32,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:32,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:02:32,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:02:32,367 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:32,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:32,493 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-08-29 12:02:32,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:02:32,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-29 12:02:32,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:32,495 INFO L225 Difference]: With dead ends: 84 [2021-08-29 12:02:32,495 INFO L226 Difference]: Without dead ends: 80 [2021-08-29 12:02:32,495 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.09ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:02:32,496 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.09ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.27ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:32,501 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 137 Unknown, 0 Unchecked, 1.09ms Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 108.27ms Time] [2021-08-29 12:02:32,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-29 12:02:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-08-29 12:02:32,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:32,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2021-08-29 12:02:32,509 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 10 [2021-08-29 12:02:32,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:32,509 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2021-08-29 12:02:32,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:32,510 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2021-08-29 12:02:32,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 12:02:32,510 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:32,510 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:02:32,544 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 12:02:32,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:32,733 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:32,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:32,733 INFO L82 PathProgramCache]: Analyzing trace with hash -828134125, now seen corresponding path program 1 times [2021-08-29 12:02:32,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:32,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024070765] [2021-08-29 12:02:32,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:32,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:32,744 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:32,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768953582] [2021-08-29 12:02:32,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:32,745 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:32,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:32,746 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:02:32,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 12:02:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:02:32,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-29 12:02:32,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:02:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:32,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:02:32,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:32,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024070765] [2021-08-29 12:02:32,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:02:32,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768953582] [2021-08-29 12:02:32,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768953582] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:02:32,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:02:32,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:02:32,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934878045] [2021-08-29 12:02:32,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:02:32,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:32,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:02:32,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:02:32,881 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:33,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:33,012 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2021-08-29 12:02:33,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 12:02:33,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-29 12:02:33,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:33,013 INFO L225 Difference]: With dead ends: 83 [2021-08-29 12:02:33,013 INFO L226 Difference]: Without dead ends: 59 [2021-08-29 12:02:33,014 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.88ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:02:33,015 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.41ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.46ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:33,016 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 155 Unknown, 0 Unchecked, 1.41ms Time], IncrementalHoareTripleChecker [18 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 109.46ms Time] [2021-08-29 12:02:33,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-08-29 12:02:33,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2021-08-29 12:02:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:33,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-08-29 12:02:33,036 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 12 [2021-08-29 12:02:33,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:33,036 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-08-29 12:02:33,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:33,036 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-08-29 12:02:33,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-29 12:02:33,037 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:33,037 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:02:33,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-29 12:02:33,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:33,249 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:33,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:33,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1416701979, now seen corresponding path program 1 times [2021-08-29 12:02:33,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:33,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598167834] [2021-08-29 12:02:33,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:33,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:33,264 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:33,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603090938] [2021-08-29 12:02:33,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:33,265 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:33,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:33,266 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:02:33,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-29 12:02:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:02:33,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-29 12:02:33,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:02:33,472 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 12:02:33,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:02:33,567 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 12:02:33,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:33,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598167834] [2021-08-29 12:02:33,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:02:33,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603090938] [2021-08-29 12:02:33,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603090938] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:02:33,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:02:33,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-08-29 12:02:33,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979093079] [2021-08-29 12:02:33,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 12:02:33,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:33,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 12:02:33,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-29 12:02:33,570 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) 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 12:02:33,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:33,815 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2021-08-29 12:02:33,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 12:02:33,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) 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 12:02:33,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:33,817 INFO L225 Difference]: With dead ends: 92 [2021-08-29 12:02:33,817 INFO L226 Difference]: Without dead ends: 86 [2021-08-29 12:02:33,817 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 62.51ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-08-29 12:02:33,818 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 125 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 146.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.30ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 181.10ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:33,818 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 0 Invalid, 201 Unknown, 0 Unchecked, 2.30ms Time], IncrementalHoareTripleChecker [39 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 181.10ms Time] [2021-08-29 12:02:33,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-08-29 12:02:33,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 50. [2021-08-29 12:02:33,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:33,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2021-08-29 12:02:33,824 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 20 [2021-08-29 12:02:33,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:33,824 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2021-08-29 12:02:33,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) 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 12:02:33,825 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2021-08-29 12:02:33,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-29 12:02:33,825 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:33,825 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:02:33,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-29 12:02:34,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:34,039 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:34,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:34,040 INFO L82 PathProgramCache]: Analyzing trace with hash -972705934, now seen corresponding path program 1 times [2021-08-29 12:02:34,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:34,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228782617] [2021-08-29 12:02:34,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:34,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:34,059 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:34,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65331533] [2021-08-29 12:02:34,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:34,060 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:34,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:34,061 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:02:34,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-29 12:02:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:02:34,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-29 12:02:34,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:02:34,161 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 12:02:34,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:02:34,225 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 12:02:34,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:34,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228782617] [2021-08-29 12:02:34,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:02:34,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65331533] [2021-08-29 12:02:34,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65331533] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:02:34,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:02:34,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-08-29 12:02:34,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535227010] [2021-08-29 12:02:34,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-29 12:02:34,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:34,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-29 12:02:34,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-29 12:02:34,232 INFO L87 Difference]: Start difference. First operand 50 states and 51 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 12:02:34,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:34,473 INFO L93 Difference]: Finished difference Result 144 states and 147 transitions. [2021-08-29 12:02:34,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-29 12:02:34,473 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 21 [2021-08-29 12:02:34,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:34,474 INFO L225 Difference]: With dead ends: 144 [2021-08-29 12:02:34,474 INFO L226 Difference]: Without dead ends: 124 [2021-08-29 12:02:34,475 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 37.41ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-29 12:02:34,475 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 69 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 155.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.76ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 195.60ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:34,476 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 245 Unknown, 0 Unchecked, 1.76ms Time], IncrementalHoareTripleChecker [5 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 195.60ms Time] [2021-08-29 12:02:34,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-08-29 12:02:34,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 76. [2021-08-29 12:02:34,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 75 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:34,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2021-08-29 12:02:34,487 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 21 [2021-08-29 12:02:34,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:34,487 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2021-08-29 12:02:34,487 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 12:02:34,487 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2021-08-29 12:02:34,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-29 12:02:34,488 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:34,488 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:02:34,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-29 12:02:34,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:34,717 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:34,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:34,717 INFO L82 PathProgramCache]: Analyzing trace with hash 54186920, now seen corresponding path program 1 times [2021-08-29 12:02:34,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:34,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562227079] [2021-08-29 12:02:34,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:34,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:34,726 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:34,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313148580] [2021-08-29 12:02:34,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:34,726 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:34,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:34,727 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 12:02:34,730 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 12:02:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:02:34,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-29 12:02:34,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:02:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:34,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:02:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:34,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:34,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562227079] [2021-08-29 12:02:34,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:02:34,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313148580] [2021-08-29 12:02:34,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313148580] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:02:34,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:02:34,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-08-29 12:02:34,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87619122] [2021-08-29 12:02:34,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 12:02:34,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:34,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 12:02:34,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-29 12:02:34,998 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:35,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:35,171 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2021-08-29 12:02:35,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 12:02:35,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-08-29 12:02:35,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:35,172 INFO L225 Difference]: With dead ends: 100 [2021-08-29 12:02:35,172 INFO L226 Difference]: Without dead ends: 98 [2021-08-29 12:02:35,173 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 35.59ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-08-29 12:02:35,173 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 114.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.30ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 139.70ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:35,173 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 258 Unknown, 0 Unchecked, 1.30ms Time], IncrementalHoareTripleChecker [5 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 139.70ms Time] [2021-08-29 12:02:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-08-29 12:02:35,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 76. [2021-08-29 12:02:35,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 75 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:35,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2021-08-29 12:02:35,183 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 22 [2021-08-29 12:02:35,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:35,183 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2021-08-29 12:02:35,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:35,184 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2021-08-29 12:02:35,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-29 12:02:35,184 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:35,184 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:02:35,212 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 12:02:35,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:35,401 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:35,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:35,401 INFO L82 PathProgramCache]: Analyzing trace with hash 534178827, now seen corresponding path program 1 times [2021-08-29 12:02:35,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:35,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31855397] [2021-08-29 12:02:35,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:35,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:35,409 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:35,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139195861] [2021-08-29 12:02:35,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:35,413 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:35,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:35,417 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 12:02:35,419 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 12:02:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:02:35,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-29 12:02:35,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:02:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:35,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:02:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:35,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:35,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31855397] [2021-08-29 12:02:35,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:02:35,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139195861] [2021-08-29 12:02:35,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139195861] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:02:35,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:02:35,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-08-29 12:02:35,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091662265] [2021-08-29 12:02:35,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 12:02:35,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:35,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 12:02:35,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-29 12:02:35,844 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:36,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:36,271 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2021-08-29 12:02:36,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 12:02:36,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-08-29 12:02:36,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:36,272 INFO L225 Difference]: With dead ends: 92 [2021-08-29 12:02:36,272 INFO L226 Difference]: Without dead ends: 74 [2021-08-29 12:02:36,272 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 129.25ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-08-29 12:02:36,273 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 87 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 306.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.57ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 344.29ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:36,273 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 0 Invalid, 174 Unknown, 0 Unchecked, 1.57ms Time], IncrementalHoareTripleChecker [40 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 344.29ms Time] [2021-08-29 12:02:36,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-08-29 12:02:36,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2021-08-29 12:02:36,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 63 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:36,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2021-08-29 12:02:36,282 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 24 [2021-08-29 12:02:36,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:36,283 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2021-08-29 12:02:36,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:36,283 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2021-08-29 12:02:36,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-29 12:02:36,284 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:36,284 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:02:36,304 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 12:02:36,493 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,SelfDestructingSolverStorable8 [2021-08-29 12:02:36,493 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:36,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:36,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1750673281, now seen corresponding path program 1 times [2021-08-29 12:02:36,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:36,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432028203] [2021-08-29 12:02:36,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:36,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:36,501 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:36,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256916466] [2021-08-29 12:02:36,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:36,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:36,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:36,504 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 12:02:36,525 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 12:02:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:02:36,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-29 12:02:36,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:02:36,874 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:36,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:02:37,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:37,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:37,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432028203] [2021-08-29 12:02:37,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:02:37,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256916466] [2021-08-29 12:02:37,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256916466] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:02:37,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:02:37,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-29 12:02:37,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439770316] [2021-08-29 12:02:37,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 12:02:37,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:37,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 12:02:37,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-29 12:02:37,265 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:37,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:37,467 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2021-08-29 12:02:37,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 12:02:37,468 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-08-29 12:02:37,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:37,469 INFO L225 Difference]: With dead ends: 74 [2021-08-29 12:02:37,469 INFO L226 Difference]: Without dead ends: 72 [2021-08-29 12:02:37,469 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 109.47ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-29 12:02:37,469 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.08ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 147.72ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:37,470 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 212 Unknown, 0 Unchecked, 1.08ms Time], IncrementalHoareTripleChecker [15 Valid, 166 Invalid, 0 Unknown, 31 Unchecked, 147.72ms Time] [2021-08-29 12:02:37,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-08-29 12:02:37,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2021-08-29 12:02:37,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 67 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:37,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2021-08-29 12:02:37,478 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 31 [2021-08-29 12:02:37,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:37,478 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2021-08-29 12:02:37,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2021-08-29 12:02:37,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-29 12:02:37,479 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:37,480 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:02:37,508 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 12:02:37,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-29 12:02:37,696 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:37,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:37,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1230314914, now seen corresponding path program 1 times [2021-08-29 12:02:37,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:37,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195985714] [2021-08-29 12:02:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:37,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:37,705 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:37,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758585258] [2021-08-29 12:02:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:37,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:37,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:37,707 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 12:02:37,721 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 12:02:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:02:37,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-29 12:02:37,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:02:38,139 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:38,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:02:38,605 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:38,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:38,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195985714] [2021-08-29 12:02:38,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:02:38,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758585258] [2021-08-29 12:02:38,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758585258] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:02:38,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:02:38,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-29 12:02:38,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14412371] [2021-08-29 12:02:38,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 12:02:38,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:38,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 12:02:38,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-29 12:02:38,608 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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 12:02:38,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:38,860 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2021-08-29 12:02:38,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 12:02:38,861 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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) Word has length 33 [2021-08-29 12:02:38,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:38,861 INFO L225 Difference]: With dead ends: 72 [2021-08-29 12:02:38,861 INFO L226 Difference]: Without dead ends: 64 [2021-08-29 12:02:38,862 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 214.44ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-08-29 12:02:38,862 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 166.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.20ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 188.62ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:38,862 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 268 Unknown, 0 Unchecked, 1.20ms Time], IncrementalHoareTripleChecker [3 Valid, 222 Invalid, 0 Unknown, 43 Unchecked, 188.62ms Time] [2021-08-29 12:02:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-29 12:02:38,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-08-29 12:02:38,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 61 states have (on average 1.098360655737705) internal successors, (67), 63 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:38,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2021-08-29 12:02:38,870 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 33 [2021-08-29 12:02:38,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:38,870 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2021-08-29 12:02:38,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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 12:02:38,871 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2021-08-29 12:02:38,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-29 12:02:38,871 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:38,871 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-08-29 12:02:38,902 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 12:02:39,092 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,SelfDestructingSolverStorable10 [2021-08-29 12:02:39,093 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:39,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:39,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1367719072, now seen corresponding path program 2 times [2021-08-29 12:02:39,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:39,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140120296] [2021-08-29 12:02:39,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:39,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:39,105 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:39,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845643004] [2021-08-29 12:02:39,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 12:02:39,109 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:39,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:39,229 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 12:02:39,230 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 12:02:39,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 12:02:39,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 12:02:39,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-29 12:02:39,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:02:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:39,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:02:39,939 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:39,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:39,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140120296] [2021-08-29 12:02:39,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:02:39,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845643004] [2021-08-29 12:02:39,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845643004] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:02:39,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:02:39,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-08-29 12:02:39,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110428185] [2021-08-29 12:02:39,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-29 12:02:39,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:39,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-29 12:02:39,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-08-29 12:02:39,941 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:40,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:40,745 INFO L93 Difference]: Finished difference Result 124 states and 126 transitions. [2021-08-29 12:02:40,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-29 12:02:40,745 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-08-29 12:02:40,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:40,746 INFO L225 Difference]: With dead ends: 124 [2021-08-29 12:02:40,746 INFO L226 Difference]: Without dead ends: 122 [2021-08-29 12:02:40,747 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 450.61ms TimeCoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2021-08-29 12:02:40,747 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 139 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 380.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.97ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 426.78ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:40,747 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 0 Invalid, 464 Unknown, 0 Unchecked, 2.97ms Time], IncrementalHoareTripleChecker [47 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 426.78ms Time] [2021-08-29 12:02:40,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-08-29 12:02:40,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 81. [2021-08-29 12:02:40,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 78 states have (on average 1.0897435897435896) internal successors, (85), 80 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:40,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2021-08-29 12:02:40,758 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 34 [2021-08-29 12:02:40,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:40,758 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2021-08-29 12:02:40,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:40,758 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2021-08-29 12:02:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-29 12:02:40,759 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:40,760 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:02:40,782 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 12:02:40,973 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,SelfDestructingSolverStorable11 [2021-08-29 12:02:40,973 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:40,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:40,974 INFO L82 PathProgramCache]: Analyzing trace with hash -230259065, now seen corresponding path program 2 times [2021-08-29 12:02:40,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:40,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270571609] [2021-08-29 12:02:40,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:40,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:40,988 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:40,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217497702] [2021-08-29 12:02:40,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 12:02:40,988 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:40,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:40,989 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 12:02:40,991 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 12:02:41,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 12:02:41,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 12:02:41,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-29 12:02:41,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:02:41,649 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:41,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:02:42,245 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:02:42,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:02:42,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270571609] [2021-08-29 12:02:42,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:02:42,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217497702] [2021-08-29 12:02:42,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217497702] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:02:42,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:02:42,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-08-29 12:02:42,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828837734] [2021-08-29 12:02:42,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-29 12:02:42,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:02:42,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-29 12:02:42,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-08-29 12:02:42,248 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:42,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:02:42,605 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2021-08-29 12:02:42,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-29 12:02:42,606 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 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 43 [2021-08-29 12:02:42,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:02:42,607 INFO L225 Difference]: With dead ends: 99 [2021-08-29 12:02:42,607 INFO L226 Difference]: Without dead ends: 97 [2021-08-29 12:02:42,607 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 315.80ms TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-08-29 12:02:42,608 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 135.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.37ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 168.34ms IncrementalHoareTripleChecker+Time [2021-08-29 12:02:42,608 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 327 Unknown, 0 Unchecked, 1.37ms Time], IncrementalHoareTripleChecker [21 Valid, 206 Invalid, 0 Unknown, 100 Unchecked, 168.34ms Time] [2021-08-29 12:02:42,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-08-29 12:02:42,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 85. [2021-08-29 12:02:42,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 82 states have (on average 1.0853658536585367) internal successors, (89), 84 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:42,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2021-08-29 12:02:42,618 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 43 [2021-08-29 12:02:42,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:02:42,619 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2021-08-29 12:02:42,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:02:42,619 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2021-08-29 12:02:42,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-29 12:02:42,620 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:02:42,620 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:02:42,633 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 12:02:42,820 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,SelfDestructingSolverStorable12 [2021-08-29 12:02:42,820 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:02:42,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:02:42,821 INFO L82 PathProgramCache]: Analyzing trace with hash 2059495850, now seen corresponding path program 2 times [2021-08-29 12:02:42,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:02:42,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099128585] [2021-08-29 12:02:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:02:42,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:02:42,827 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:02:42,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058467838] [2021-08-29 12:02:42,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 12:02:42,827 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:02:42,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:02:42,828 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 12:02:42,838 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 12:02:43,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-29 12:02:43,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 12:02:43,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 36 conjunts are in the unsatisfiable core [2021-08-29 12:02:43,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:03:02,959 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-08-29 12:03:02,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:03:02,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:03:02,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099128585] [2021-08-29 12:03:02,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:03:02,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058467838] [2021-08-29 12:03:02,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058467838] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:03:02,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:03:02,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-29 12:03:02,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652368737] [2021-08-29 12:03:02,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-29 12:03:02,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:03:02,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-29 12:03:02,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=133, Unknown=1, NotChecked=0, Total=182 [2021-08-29 12:03:02,961 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:04,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:03:07,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:03:09,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:03:11,279 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:03:14,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:03:19,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:03:20,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:03:28,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:03:31,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:03:37,890 WARN L210 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-08-29 12:03:40,368 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:03:42,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:03:45,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:03:46,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:03:48,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:03:49,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:03:51,840 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:03:52,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:03:52,464 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2021-08-29 12:03:52,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 12:03:52,465 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-08-29 12:03:52,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:03:52,465 INFO L225 Difference]: With dead ends: 95 [2021-08-29 12:03:52,465 INFO L226 Difference]: Without dead ends: 85 [2021-08-29 12:03:52,466 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 24618.94ms TimeCoverageRelationStatistics Valid=84, Invalid=187, Unknown=1, NotChecked=0, Total=272 [2021-08-29 12:03:52,466 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 32 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39293.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.14ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39373.47ms IncrementalHoareTripleChecker+Time [2021-08-29 12:03:52,467 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 188 Unknown, 0 Unchecked, 2.14ms Time], IncrementalHoareTripleChecker [32 Valid, 147 Invalid, 9 Unknown, 0 Unchecked, 39373.47ms Time] [2021-08-29 12:03:52,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-08-29 12:03:52,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2021-08-29 12:03:52,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 75 states have internal predecessors, (77), 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 12:03:52,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2021-08-29 12:03:52,485 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 45 [2021-08-29 12:03:52,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:03:52,485 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2021-08-29 12:03:52,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2021-08-29 12:03:52,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-29 12:03:52,486 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:03:52,486 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:03:52,497 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 12:03:52,693 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,SelfDestructingSolverStorable13 [2021-08-29 12:03:52,694 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:03:52,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:03:52,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1986227318, now seen corresponding path program 2 times [2021-08-29 12:03:52,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:03:52,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416507731] [2021-08-29 12:03:52,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:52,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:03:52,703 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:03:52,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [129872508] [2021-08-29 12:03:52,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 12:03:52,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:52,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:03:52,705 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 12:03:52,709 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 12:03:52,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 12:03:52,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 12:03:52,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-29 12:03:52,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:03:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:52,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:03:53,070 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:53,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:03:53,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416507731] [2021-08-29 12:03:53,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:03:53,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129872508] [2021-08-29 12:03:53,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129872508] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:03:53,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:03:53,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-08-29 12:03:53,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219437667] [2021-08-29 12:03:53,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-29 12:03:53,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:03:53,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-29 12:03:53,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-08-29 12:03:53,073 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 13 states have internal predecessors, (109), 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 12:03:53,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:03:53,350 INFO L93 Difference]: Finished difference Result 178 states and 184 transitions. [2021-08-29 12:03:53,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-29 12:03:53,351 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 13 states have internal predecessors, (109), 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 57 [2021-08-29 12:03:53,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:03:53,352 INFO L225 Difference]: With dead ends: 178 [2021-08-29 12:03:53,352 INFO L226 Difference]: Without dead ends: 168 [2021-08-29 12:03:53,354 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 117.35ms TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2021-08-29 12:03:53,355 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 118 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.58ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 177.92ms IncrementalHoareTripleChecker+Time [2021-08-29 12:03:53,356 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 0 Invalid, 235 Unknown, 0 Unchecked, 1.58ms Time], IncrementalHoareTripleChecker [12 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 177.92ms Time] [2021-08-29 12:03:53,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-08-29 12:03:53,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 138. [2021-08-29 12:03:53,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 136 states have (on average 1.0588235294117647) internal successors, (144), 137 states have internal predecessors, (144), 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 12:03:53,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 144 transitions. [2021-08-29 12:03:53,379 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 144 transitions. Word has length 57 [2021-08-29 12:03:53,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:03:53,379 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 144 transitions. [2021-08-29 12:03:53,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 13 states have internal predecessors, (109), 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 12:03:53,380 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 144 transitions. [2021-08-29 12:03:53,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-29 12:03:53,382 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:03:53,382 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:03:53,409 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 12:03:53,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:53,598 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:03:53,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:03:53,598 INFO L82 PathProgramCache]: Analyzing trace with hash -60719465, now seen corresponding path program 3 times [2021-08-29 12:03:53,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:03:53,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469455639] [2021-08-29 12:03:53,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:53,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:03:53,604 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:03:53,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408946429] [2021-08-29 12:03:53,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-29 12:03:53,604 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:53,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:03:53,607 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:03:53,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-29 12:03:54,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-29 12:03:54,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 12:03:54,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 48 conjunts are in the unsatisfiable core [2021-08-29 12:03:54,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:04:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-08-29 12:04:09,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:04:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-08-29 12:04:20,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:04:20,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469455639] [2021-08-29 12:04:20,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:04:20,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408946429] [2021-08-29 12:04:20,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408946429] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-29 12:04:20,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-29 12:04:20,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [16] total 25 [2021-08-29 12:04:20,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707578418] [2021-08-29 12:04:20,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-29 12:04:20,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:04:20,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-29 12:04:20,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=431, Unknown=7, NotChecked=0, Total=600 [2021-08-29 12:04:20,222 INFO L87 Difference]: Start difference. First operand 138 states and 144 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:04:26,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:04:26,273 INFO L93 Difference]: Finished difference Result 140 states and 145 transitions. [2021-08-29 12:04:26,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 12:04:26,274 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-29 12:04:26,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:04:26,274 INFO L225 Difference]: With dead ends: 140 [2021-08-29 12:04:26,274 INFO L226 Difference]: Without dead ends: 134 [2021-08-29 12:04:26,275 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 106 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 30029.12ms TimeCoverageRelationStatistics Valid=205, Invalid=544, Unknown=7, NotChecked=0, Total=756 [2021-08-29 12:04:26,275 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 115 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 162.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.95ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 184.98ms IncrementalHoareTripleChecker+Time [2021-08-29 12:04:26,276 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 0 Invalid, 116 Unknown, 0 Unchecked, 0.95ms Time], IncrementalHoareTripleChecker [10 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 184.98ms Time] [2021-08-29 12:04:26,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-08-29 12:04:26,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-08-29 12:04:26,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 133 states have internal predecessors, (134), 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 12:04:26,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2021-08-29 12:04:26,294 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 67 [2021-08-29 12:04:26,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:04:26,294 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2021-08-29 12:04:26,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:04:26,294 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2021-08-29 12:04:26,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-08-29 12:04:26,295 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:04:26,295 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:04:26,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-29 12:04:26,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-29 12:04:26,501 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:04:26,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:04:26,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1790826426, now seen corresponding path program 3 times [2021-08-29 12:04:26,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:04:26,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472295326] [2021-08-29 12:04:26,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:04:26,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:04:26,507 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:04:26,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1721654064] [2021-08-29 12:04:26,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-29 12:04:26,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:04:26,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:04:26,508 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:04:26,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-29 12:04:26,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-08-29 12:04:26,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-08-29 12:04:26,688 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 12:04:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 12:04:26,829 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 12:04:26,829 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 12:04:26,830 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (10 of 11 remaining) [2021-08-29 12:04:26,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (9 of 11 remaining) [2021-08-29 12:04:26,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (8 of 11 remaining) [2021-08-29 12:04:26,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (7 of 11 remaining) [2021-08-29 12:04:26,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (6 of 11 remaining) [2021-08-29 12:04:26,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 11 remaining) [2021-08-29 12:04:26,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 11 remaining) [2021-08-29 12:04:26,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (3 of 11 remaining) [2021-08-29 12:04:26,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (2 of 11 remaining) [2021-08-29 12:04:26,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2021-08-29 12:04:26,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (0 of 11 remaining) [2021-08-29 12:04:26,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-29 12:04:27,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-29 12:04:27,045 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 12:04:27,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 12:04:27 BoogieIcfgContainer [2021-08-29 12:04:27,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 12:04:27,125 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 12:04:27,125 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 12:04:27,125 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 12:04:27,126 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:02:30" (3/4) ... [2021-08-29 12:04:27,127 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 12:04:27,215 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 12:04:27,215 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 12:04:27,216 INFO L158 Benchmark]: Toolchain (without parser) took 117467.71ms. Allocated memory was 56.6MB in the beginning and 107.0MB in the end (delta: 50.3MB). Free memory was 34.5MB in the beginning and 74.1MB in the end (delta: -39.7MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2021-08-29 12:04:27,216 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 56.6MB. Free memory was 37.8MB in the beginning and 37.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:04:27,217 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.29ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 39.9MB in the end (delta: -5.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-08-29 12:04:27,217 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.14ms. Allocated memory is still 56.6MB. Free memory was 39.9MB in the beginning and 38.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:04:27,217 INFO L158 Benchmark]: Boogie Preprocessor took 19.95ms. Allocated memory is still 56.6MB. Free memory was 38.2MB in the beginning and 37.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:04:27,217 INFO L158 Benchmark]: RCFGBuilder took 259.05ms. Allocated memory is still 56.6MB. Free memory was 36.8MB in the beginning and 27.2MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 12:04:27,218 INFO L158 Benchmark]: TraceAbstraction took 116705.22ms. Allocated memory was 56.6MB in the beginning and 107.0MB in the end (delta: 50.3MB). Free memory was 26.7MB in the beginning and 82.5MB in the end (delta: -55.8MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. [2021-08-29 12:04:27,218 INFO L158 Benchmark]: Witness Printer took 90.54ms. Allocated memory is still 107.0MB. Free memory was 82.5MB in the beginning and 74.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 12:04:27,219 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 56.6MB. Free memory was 37.8MB in the beginning and 37.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.29ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 39.9MB in the end (delta: -5.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.14ms. Allocated memory is still 56.6MB. Free memory was 39.9MB in the beginning and 38.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.95ms. Allocated memory is still 56.6MB. Free memory was 38.2MB in the beginning and 37.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 259.05ms. Allocated memory is still 56.6MB. Free memory was 36.8MB in the beginning and 27.2MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 116705.22ms. Allocated memory was 56.6MB in the beginning and 107.0MB in the end (delta: 50.3MB). Free memory was 26.7MB in the beginning and 82.5MB in the end (delta: -55.8MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. * Witness Printer took 90.54ms. Allocated memory is still 107.0MB. Free memory was 82.5MB in the beginning and 74.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] short a; [L25] long long n, x, y, z; [L26] a = __VERIFIER_nondet_unsigned_short() [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=1] [L33] EXPR counter++ VAL [counter=2] [L33] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=2] [L33] EXPR counter++ VAL [counter=3] [L33] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=3] [L33] EXPR counter++ VAL [counter=4] [L33] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=4] [L33] EXPR counter++ VAL [counter=5] [L33] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=5] [L33] EXPR counter++ VAL [counter=6] [L33] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=6] [L33] EXPR counter++ VAL [counter=7] [L33] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=7] [L33] EXPR counter++ VAL [counter=8] [L33] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=8] [L33] EXPR counter++ VAL [counter=9] [L33] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=9] [L33] EXPR counter++ VAL [counter=10] [L33] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=10] [L33] EXPR counter++ VAL [counter=11] [L33] COND FALSE !(counter++<10) [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND TRUE !(cond) VAL [counter=11] [L17] reach_error() VAL [counter=11] - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 116555.41ms, OverallIterations: 17, TraceHistogramMax: 11, EmptinessCheckTime: 23.25ms, AutomataDifference: 59441.48ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 11.69ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 9 mSolverCounterUnknown, 940 SdHoareTripleChecker+Valid, 42170.34ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 940 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 41623.10ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 174 IncrementalHoareTripleChecker+Unchecked, 1290 mSDsCounter, 273 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2899 IncrementalHoareTripleChecker+Invalid, 3355 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 273 mSolverCounterUnsat, 0 mSDtfsCounter, 2899 mSolverCounterSat, 26.35ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 829 GetRequests, 646 SyntacticMatches, 11 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 56192.37ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=15, InterpolantAutomatonStates: 138, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 197.00ms AutomataMinimizationTime, 16 MinimizatonAttempts, 273 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 103.10ms SsaConstructionTime, 2228.38ms SatisfiabilityAnalysisTime, 50133.06ms InterpolantComputationTime, 571 NumberOfCodeBlocks, 511 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 768 ConstructedInterpolants, 48 QuantifiedInterpolants, 10858 SizeOfPredicates, 90 NumberOfNonLiveVariables, 1660 ConjunctsInSsa, 257 ConjunctsInUnsatCore, 26 InterpolantComputations, 7 PerfectInterpolantSequences, 274/654 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 12:04:27,253 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...