./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test_while_int.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test_while_int.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg --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 f3aef2cb0383bc51116609eb7d5762e5307f0f48dd90c41df34c9f2444e8da09 ............................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:38:05,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:38:05,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:38:05,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:38:05,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:38:05,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:38:05,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:38:05,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:38:05,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:38:05,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:38:05,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:38:05,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:38:05,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:38:05,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:38:05,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:38:05,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:38:05,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:38:05,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:38:05,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:38:05,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:38:05,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:38:05,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:38:05,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:38:05,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:38:05,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:38:05,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:38:05,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:38:05,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:38:05,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:38:05,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:38:05,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:38:05,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:38:05,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:38:05,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:38:05,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:38:05,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:38:05,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:38:05,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:38:05,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:38:05,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:38:05,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:38:05,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:38:05,992 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:38:05,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:38:05,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:38:05,996 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:38:05,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:38:05,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:38:05,999 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:38:05,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:38:05,999 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:38:06,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:38:06,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:38:06,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:38:06,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:38:06,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:38:06,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:38:06,003 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:38:06,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:38:06,004 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:38:06,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:38:06,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:38:06,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:38:06,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:38:06,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:38:06,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:38:06,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:38:06,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:38:06,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:38:06,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:38:06,007 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:38:06,010 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:38:06,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:38:06,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:38:06,011 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_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3aef2cb0383bc51116609eb7d5762e5307f0f48dd90c41df34c9f2444e8da09 [2021-10-28 09:38:06,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:38:06,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:38:06,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:38:06,478 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:38:06,479 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:38:06,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/ldv-regression/test_while_int.i [2021-10-28 09:38:06,555 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/data/c7ef19a3a/ed0317d9373d42faa3e2ece245b20b0f/FLAGea4e6ba10 [2021-10-28 09:38:07,139 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:38:07,140 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/sv-benchmarks/c/ldv-regression/test_while_int.i [2021-10-28 09:38:07,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/data/c7ef19a3a/ed0317d9373d42faa3e2ece245b20b0f/FLAGea4e6ba10 [2021-10-28 09:38:07,508 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/data/c7ef19a3a/ed0317d9373d42faa3e2ece245b20b0f [2021-10-28 09:38:07,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:38:07,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:38:07,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:38:07,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:38:07,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:38:07,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:38:07" (1/1) ... [2021-10-28 09:38:07,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5d0695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:07, skipping insertion in model container [2021-10-28 09:38:07,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:38:07" (1/1) ... [2021-10-28 09:38:07,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:38:07,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:38:07,744 WARN L228 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_0039ea90-3898-4c0c-8a70-a4d9c244f962/sv-benchmarks/c/ldv-regression/test_while_int.i[296,309] [2021-10-28 09:38:07,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:38:07,780 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:38:07,794 WARN L228 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_0039ea90-3898-4c0c-8a70-a4d9c244f962/sv-benchmarks/c/ldv-regression/test_while_int.i[296,309] [2021-10-28 09:38:07,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:38:07,813 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:38:07,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:07 WrapperNode [2021-10-28 09:38:07,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:38:07,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:38:07,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:38:07,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:38:07,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:07" (1/1) ... [2021-10-28 09:38:07,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:07" (1/1) ... [2021-10-28 09:38:07,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:38:07,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:38:07,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:38:07,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:38:07,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:07" (1/1) ... [2021-10-28 09:38:07,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:07" (1/1) ... [2021-10-28 09:38:07,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:07" (1/1) ... [2021-10-28 09:38:07,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:07" (1/1) ... [2021-10-28 09:38:07,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:07" (1/1) ... [2021-10-28 09:38:07,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:07" (1/1) ... [2021-10-28 09:38:07,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:07" (1/1) ... [2021-10-28 09:38:07,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:38:07,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:38:07,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:38:07,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:38:07,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:07" (1/1) ... [2021-10-28 09:38:07,898 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:38:07,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:07,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:38:07,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:38:07,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:38:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:38:07,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:38:07,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:38:08,197 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:38:08,198 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 09:38:08,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:38:08 BoogieIcfgContainer [2021-10-28 09:38:08,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:38:08,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:38:08,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:38:08,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:38:08,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:38:07" (1/3) ... [2021-10-28 09:38:08,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4651302b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:38:08, skipping insertion in model container [2021-10-28 09:38:08,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:07" (2/3) ... [2021-10-28 09:38:08,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4651302b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:38:08, skipping insertion in model container [2021-10-28 09:38:08,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:38:08" (3/3) ... [2021-10-28 09:38:08,215 INFO L111 eAbstractionObserver]: Analyzing ICFG test_while_int.i [2021-10-28 09:38:08,222 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:38:08,222 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:38:08,286 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:38:08,295 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-10-28 09:38:08,295 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:38:08,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 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) [2021-10-28 09:38:08,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-28 09:38:08,320 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:08,321 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-28 09:38:08,322 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:38:08,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:08,330 INFO L85 PathProgramCache]: Analyzing trace with hash 28699818, now seen corresponding path program 1 times [2021-10-28 09:38:08,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:08,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541587290] [2021-10-28 09:38:08,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:08,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:08,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:08,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541587290] [2021-10-28 09:38:08,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541587290] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:08,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:08,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:38:08,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745914323] [2021-10-28 09:38:08,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:38:08,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:08,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:38:08,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:38:08,765 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-10-28 09:38:08,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:08,835 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2021-10-28 09:38:08,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:38:08,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2021-10-28 09:38:08,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:08,848 INFO L225 Difference]: With dead ends: 20 [2021-10-28 09:38:08,848 INFO L226 Difference]: Without dead ends: 8 [2021-10-28 09:38:08,853 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:38:08,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-28 09:38:08,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-28 09:38:08,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2021-10-28 09:38:08,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-28 09:38:08,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2021-10-28 09:38:08,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:08,895 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-28 09:38:08,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-10-28 09:38:08,896 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-28 09:38:08,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:38:08,897 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:08,898 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-28 09:38:08,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:38:08,899 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:38:08,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:08,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1810655527, now seen corresponding path program 1 times [2021-10-28 09:38:08,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:08,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465906956] [2021-10-28 09:38:08,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:08,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:09,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:09,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465906956] [2021-10-28 09:38:09,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465906956] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:09,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767039733] [2021-10-28 09:38:09,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:09,048 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:09,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:09,056 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:09,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:38:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:09,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:38:09,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:09,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767039733] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:09,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:38:09,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-28 09:38:09,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518810855] [2021-10-28 09:38:09,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:38:09,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:09,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:38:09,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:38:09,254 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:09,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:09,289 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-28 09:38:09,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:38:09,290 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-28 09:38:09,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:09,291 INFO L225 Difference]: With dead ends: 13 [2021-10-28 09:38:09,291 INFO L226 Difference]: Without dead ends: 11 [2021-10-28 09:38:09,292 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:38:09,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-28 09:38:09,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-10-28 09:38:09,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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) [2021-10-28 09:38:09,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-28 09:38:09,296 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2021-10-28 09:38:09,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:09,297 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-28 09:38:09,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:09,297 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-28 09:38:09,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:38:09,298 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:09,298 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2021-10-28 09:38:09,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:09,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:09,509 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:38:09,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:09,510 INFO L85 PathProgramCache]: Analyzing trace with hash 578140772, now seen corresponding path program 2 times [2021-10-28 09:38:09,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:09,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371217651] [2021-10-28 09:38:09,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:09,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:38:09,549 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:38:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:38:09,616 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:38:09,617 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:38:09,618 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:38:09,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:38:09,625 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1] [2021-10-28 09:38:09,629 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:38:09,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:38:09 BoogieIcfgContainer [2021-10-28 09:38:09,659 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:38:09,660 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:38:09,660 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:38:09,660 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:38:09,661 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:38:08" (3/4) ... [2021-10-28 09:38:09,663 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:38:09,704 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:38:09,704 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:38:09,706 INFO L168 Benchmark]: Toolchain (without parser) took 2191.96 ms. Allocated memory is still 94.4 MB. Free memory was 74.5 MB in the beginning and 47.9 MB in the end (delta: 26.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:38:09,707 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory was 56.3 MB in the beginning and 56.2 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:38:09,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.16 ms. Allocated memory is still 94.4 MB. Free memory was 74.1 MB in the beginning and 71.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:38:09,709 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.68 ms. Allocated memory is still 94.4 MB. Free memory was 71.5 MB in the beginning and 70.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:38:09,710 INFO L168 Benchmark]: Boogie Preprocessor took 26.27 ms. Allocated memory is still 94.4 MB. Free memory was 69.9 MB in the beginning and 69.1 MB in the end (delta: 807.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:38:09,710 INFO L168 Benchmark]: RCFGBuilder took 316.34 ms. Allocated memory is still 94.4 MB. Free memory was 69.1 MB in the beginning and 60.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:38:09,711 INFO L168 Benchmark]: TraceAbstraction took 1457.04 ms. Allocated memory is still 94.4 MB. Free memory was 59.8 MB in the beginning and 50.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:38:09,712 INFO L168 Benchmark]: Witness Printer took 44.06 ms. Allocated memory is still 94.4 MB. Free memory was 50.0 MB in the beginning and 47.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:38:09,717 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory was 56.3 MB in the beginning and 56.2 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.16 ms. Allocated memory is still 94.4 MB. Free memory was 74.1 MB in the beginning and 71.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.68 ms. Allocated memory is still 94.4 MB. Free memory was 71.5 MB in the beginning and 70.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.27 ms. Allocated memory is still 94.4 MB. Free memory was 69.9 MB in the beginning and 69.1 MB in the end (delta: 807.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 316.34 ms. Allocated memory is still 94.4 MB. Free memory was 69.1 MB in the beginning and 60.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1457.04 ms. Allocated memory is still 94.4 MB. Free memory was 59.8 MB in the beginning and 50.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Witness Printer took 44.06 ms. Allocated memory is still 94.4 MB. Free memory was 50.0 MB in the beginning and 47.9 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int i=0; [L26] COND TRUE i<5 [L27] i++ [L20] (b) ? (0) : __blast_assert () [L26] COND TRUE i<5 [L27] i++ [L20] (b) ? (0) : __blast_assert () [L26] COND TRUE i<5 [L27] i++ [L20] (b) ? (0) : __blast_assert () [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 7 SDslu, 24 SDs, 0 SdLazy, 24 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 2 NumberOfNonLiveVariables, 51 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 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! [2021-10-28 09:38:09,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0039ea90-3898-4c0c-8a70-a4d9c244f962/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...