./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC --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 91f380cc586fc37a21f02c3c45ccd402d5300ed9 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-7b2dab5 [2021-10-11 00:31:50,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:31:50,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:31:50,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:31:50,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:31:50,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:31:50,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:31:50,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:31:50,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:31:50,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:31:50,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:31:50,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:31:50,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:31:50,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:31:50,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:31:50,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:31:50,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:31:50,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:31:50,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:31:50,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:31:50,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:31:50,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:31:50,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:31:50,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:31:50,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:31:50,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:31:50,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:31:50,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:31:50,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:31:50,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:31:50,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:31:50,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:31:50,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:31:50,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:31:50,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:31:50,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:31:50,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:31:50,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:31:50,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:31:50,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:31:50,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:31:50,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:31:50,548 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:31:50,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:31:50,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:31:50,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:31:50,551 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:31:50,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:31:50,552 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:31:50,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:31:50,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:31:50,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:31:50,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:31:50,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:31:50,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:31:50,561 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:31:50,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:31:50,562 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:31:50,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:31:50,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:31:50,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:31:50,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:31:50,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:31:50,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:31:50,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:31:50,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:31:50,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:31:50,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:31:50,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:31:50,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:31:50,565 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91f380cc586fc37a21f02c3c45ccd402d5300ed9 [2021-10-11 00:31:50,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:31:50,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:31:50,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:31:50,932 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:31:50,932 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:31:50,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c [2021-10-11 00:31:51,021 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC/data/b3928a07c/95487c65ed8f45f1a71af006f6c3e289/FLAGc26d6ac04 [2021-10-11 00:31:51,472 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:31:51,473 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c [2021-10-11 00:31:51,490 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC/data/b3928a07c/95487c65ed8f45f1a71af006f6c3e289/FLAGc26d6ac04 [2021-10-11 00:31:51,840 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC/data/b3928a07c/95487c65ed8f45f1a71af006f6c3e289 [2021-10-11 00:31:51,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:31:51,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:31:51,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:31:51,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:31:51,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:31:51,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:31:51" (1/1) ... [2021-10-11 00:31:51,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dea4782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:51, skipping insertion in model container [2021-10-11 00:31:51,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:31:51" (1/1) ... [2021-10-11 00:31:51,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:31:51,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:31:52,087 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c[458,471] [2021-10-11 00:31:52,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:31:52,116 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:31:52,129 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c[458,471] [2021-10-11 00:31:52,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:31:52,152 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:31:52,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:52 WrapperNode [2021-10-11 00:31:52,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:31:52,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:31:52,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:31:52,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:31:52,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:52" (1/1) ... [2021-10-11 00:31:52,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:52" (1/1) ... [2021-10-11 00:31:52,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:31:52,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:31:52,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:31:52,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:31:52,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:52" (1/1) ... [2021-10-11 00:31:52,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:52" (1/1) ... [2021-10-11 00:31:52,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:52" (1/1) ... [2021-10-11 00:31:52,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:52" (1/1) ... [2021-10-11 00:31:52,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:52" (1/1) ... [2021-10-11 00:31:52,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:52" (1/1) ... [2021-10-11 00:31:52,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:52" (1/1) ... [2021-10-11 00:31:52,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:31:52,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:31:52,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:31:52,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:31:52,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:52" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:31:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:31:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:31:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:31:52,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:31:52,551 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:31:52,552 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-11 00:31:52,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:31:52 BoogieIcfgContainer [2021-10-11 00:31:52,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:31:52,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:31:52,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:31:52,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:31:52,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:31:51" (1/3) ... [2021-10-11 00:31:52,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61281d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:31:52, skipping insertion in model container [2021-10-11 00:31:52,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:52" (2/3) ... [2021-10-11 00:31:52,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61281d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:31:52, skipping insertion in model container [2021-10-11 00:31:52,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:31:52" (3/3) ... [2021-10-11 00:31:52,584 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound1.c [2021-10-11 00:31:52,603 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:31:52,606 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-10-11 00:31:52,631 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 00:31:52,673 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:31:52,674 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:31:52,674 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:31:52,674 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:31:52,675 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:31:52,675 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:31:52,675 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:31:52,675 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:31:52,689 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2021-10-11 00:31:52,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 00:31:52,701 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:52,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:52,717 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:31:52,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:52,723 INFO L82 PathProgramCache]: Analyzing trace with hash 120120651, now seen corresponding path program 1 times [2021-10-11 00:31:52,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:52,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453556195] [2021-10-11 00:31:52,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:52,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453556195] [2021-10-11 00:31:52,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:52,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:31:53,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878114057] [2021-10-11 00:31:53,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:31:53,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:53,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:31:53,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:31:53,037 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2021-10-11 00:31:53,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:53,063 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2021-10-11 00:31:53,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:31:53,066 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 00:31:53,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:53,086 INFO L225 Difference]: With dead ends: 41 [2021-10-11 00:31:53,091 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 00:31:53,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:31:53,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 00:31:53,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-11 00:31:53,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 00:31:53,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-11 00:31:53,186 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2021-10-11 00:31:53,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:53,186 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-11 00:31:53,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:31:53,186 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-11 00:31:53,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 00:31:53,187 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:53,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:53,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:31:53,188 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:31:53,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:53,189 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-10-11 00:31:53,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:53,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368265196] [2021-10-11 00:31:53,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:53,220 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:31:53,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720861209] [2021-10-11 00:31:53,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:53,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 00:31:53,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:53,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368265196] [2021-10-11 00:31:53,435 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:31:53,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720861209] [2021-10-11 00:31:53,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:53,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:31:53,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091521572] [2021-10-11 00:31:53,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:31:53,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:53,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:31:53,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:31:53,441 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2021-10-11 00:31:57,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:57,955 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-10-11 00:31:57,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:31:57,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-10-11 00:31:57,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:57,958 INFO L225 Difference]: With dead ends: 36 [2021-10-11 00:31:57,958 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 00:31:57,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:31:57,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 00:31:57,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-10-11 00:31:57,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-11 00:31:57,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-10-11 00:31:57,965 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 8 [2021-10-11 00:31:57,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:57,966 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-10-11 00:31:57,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:31:57,966 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-10-11 00:31:57,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:31:57,967 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:57,967 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:58,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 00:31:58,181 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:31:58,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:58,182 INFO L82 PathProgramCache]: Analyzing trace with hash -938089448, now seen corresponding path program 1 times [2021-10-11 00:31:58,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:58,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2828683] [2021-10-11 00:31:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:58,201 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:31:58,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502282026] [2021-10-11 00:31:58,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:58,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:31:58,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:58,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2828683] [2021-10-11 00:31:58,336 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:31:58,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502282026] [2021-10-11 00:31:58,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:31:58,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-11 00:31:58,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775966560] [2021-10-11 00:31:58,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:31:58,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:58,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:31:58,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:31:58,350 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 5 states. [2021-10-11 00:31:58,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:58,374 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-10-11 00:31:58,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:31:58,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 00:31:58,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:58,376 INFO L225 Difference]: With dead ends: 32 [2021-10-11 00:31:58,376 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 00:31:58,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:31:58,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 00:31:58,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-11 00:31:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 00:31:58,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2021-10-11 00:31:58,382 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 12 [2021-10-11 00:31:58,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:58,382 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2021-10-11 00:31:58,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:31:58,383 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2021-10-11 00:31:58,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 00:31:58,383 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:58,384 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:58,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:58,597 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:31:58,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:58,597 INFO L82 PathProgramCache]: Analyzing trace with hash 983954548, now seen corresponding path program 1 times [2021-10-11 00:31:58,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:58,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226617105] [2021-10-11 00:31:58,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:58,612 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:31:58,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215682298] [2021-10-11 00:31:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:58,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-11 00:31:58,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:58,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:58,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226617105] [2021-10-11 00:31:58,808 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:31:58,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215682298] [2021-10-11 00:31:58,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:31:58,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-11 00:31:58,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549204313] [2021-10-11 00:31:58,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:31:58,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:58,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:31:58,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:31:58,812 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 6 states. [2021-10-11 00:31:58,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:58,923 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-10-11 00:31:58,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:31:58,923 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-10-11 00:31:58,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:58,924 INFO L225 Difference]: With dead ends: 18 [2021-10-11 00:31:58,924 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 00:31:58,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:31:58,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 00:31:58,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 00:31:58,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 00:31:58,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2021-10-11 00:31:58,931 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 13 [2021-10-11 00:31:58,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:58,932 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2021-10-11 00:31:58,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:31:58,932 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2021-10-11 00:31:58,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:31:58,932 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:58,933 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:59,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:59,149 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:31:59,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:59,149 INFO L82 PathProgramCache]: Analyzing trace with hash 687671895, now seen corresponding path program 1 times [2021-10-11 00:31:59,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:59,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883389070] [2021-10-11 00:31:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:59,161 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:31:59,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1673452780] [2021-10-11 00:31:59,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:59,236 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:59,249 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:59,282 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:31:59,282 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:31:59,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:59,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:31:59 BoogieIcfgContainer [2021-10-11 00:31:59,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:31:59,510 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:31:59,510 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:31:59,511 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:31:59,511 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:31:52" (3/4) ... [2021-10-11 00:31:59,513 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:31:59,557 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b9b1d3-7ed4-4330-94eb-335e0cff6353/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:31:59,557 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:31:59,559 INFO L168 Benchmark]: Toolchain (without parser) took 7713.78 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 57.8 MB in the beginning and 40.9 MB in the end (delta: 16.9 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:59,559 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 92.3 MB. Free memory was 63.5 MB in the beginning and 63.5 MB in the end (delta: 29.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:31:59,560 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.49 ms. Allocated memory is still 92.3 MB. Free memory was 57.6 MB in the beginning and 67.7 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:59,561 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.31 ms. Allocated memory is still 92.3 MB. Free memory was 67.7 MB in the beginning and 66.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:59,562 INFO L168 Benchmark]: Boogie Preprocessor took 23.27 ms. Allocated memory is still 92.3 MB. Free memory was 66.2 MB in the beginning and 65.3 MB in the end (delta: 915.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:31:59,562 INFO L168 Benchmark]: RCFGBuilder took 337.98 ms. Allocated memory is still 92.3 MB. Free memory was 65.3 MB in the beginning and 52.0 MB in the end (delta: 13.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:59,563 INFO L168 Benchmark]: TraceAbstraction took 6954.20 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 51.7 MB in the beginning and 43.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:59,564 INFO L168 Benchmark]: Witness Printer took 46.67 ms. Allocated memory is still 111.1 MB. Free memory was 43.0 MB in the beginning and 40.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:59,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 92.3 MB. Free memory was 63.5 MB in the beginning and 63.5 MB in the end (delta: 29.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.49 ms. Allocated memory is still 92.3 MB. Free memory was 57.6 MB in the beginning and 67.7 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.31 ms. Allocated memory is still 92.3 MB. Free memory was 67.7 MB in the beginning and 66.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.27 ms. Allocated memory is still 92.3 MB. Free memory was 66.2 MB in the beginning and 65.3 MB in the end (delta: 915.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 337.98 ms. Allocated memory is still 92.3 MB. Free memory was 65.3 MB in the beginning and 52.0 MB in the end (delta: 13.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6954.20 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 51.7 MB in the beginning and 43.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. * Witness Printer took 46.67 ms. Allocated memory is still 111.1 MB. Free memory was 43.0 MB in the beginning and 40.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; VAL [counter=0] [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L7] COND FALSE !(!cond) VAL [counter=0] [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [counter=0] [L28] EXPR counter++ VAL [counter=1] [L28] COND TRUE counter++<1 [L10] COND FALSE !(!(cond)) VAL [counter=1] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [counter=1] [L28] EXPR counter++ VAL [counter=2] [L28] COND FALSE !(counter++<1) [L10] COND FALSE !(!(cond)) VAL [counter=2] [L10] COND TRUE !(cond) VAL [counter=2] [L12] reach_error() VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.8s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 66 SDslu, 51 SDs, 0 SdLazy, 52 SolverSat, 17 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 1481 SizeOfPredicates, 13 NumberOfNonLiveVariables, 214 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/5 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! Received shutdown request...