./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 418aff548e88686eba696c93dbdd36b46dcf2c98 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-5709675 [2021-10-16 02:40:48,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:40:49,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:40:49,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:40:49,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:40:49,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:40:49,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:40:49,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:40:49,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:40:49,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:40:49,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:40:49,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:40:49,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:40:49,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:40:49,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:40:49,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:40:49,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:40:49,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:40:49,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:40:49,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:40:49,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:40:49,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:40:49,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:40:49,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:40:49,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:40:49,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:40:49,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:40:49,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:40:49,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:40:49,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:40:49,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:40:49,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:40:49,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:40:49,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:40:49,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:40:49,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:40:49,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:40:49,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:40:49,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:40:49,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:40:49,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:40:49,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:40:49,151 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:40:49,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:40:49,153 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:40:49,153 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:40:49,154 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:40:49,154 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:40:49,154 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:40:49,155 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:40:49,155 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:40:49,156 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:40:49,156 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:40:49,156 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:40:49,157 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:40:49,157 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:40:49,158 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:40:49,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:40:49,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:40:49,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:40:49,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:40:49,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:40:49,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:40:49,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:40:49,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:40:49,168 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:40:49,168 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:40:49,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:40:49,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:40:49,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:40:49,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:40:49,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:40:49,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:40:49,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:40:49,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:40:49,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:40:49,174 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:40:49,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:40:49,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:40:49,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:40:49,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:40:49,176 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 418aff548e88686eba696c93dbdd36b46dcf2c98 [2021-10-16 02:40:49,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:40:49,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:40:49,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:40:49,512 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:40:49,513 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:40:49,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound1.c [2021-10-16 02:40:49,604 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/data/01a9d3a27/158bffcf303e45c59257723f7d62bca6/FLAG479ce6028 [2021-10-16 02:40:50,132 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:40:50,133 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound1.c [2021-10-16 02:40:50,142 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/data/01a9d3a27/158bffcf303e45c59257723f7d62bca6/FLAG479ce6028 [2021-10-16 02:40:50,495 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/data/01a9d3a27/158bffcf303e45c59257723f7d62bca6 [2021-10-16 02:40:50,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:40:50,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:40:50,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:40:50,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:40:50,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:40:50,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:40:50" (1/1) ... [2021-10-16 02:40:50,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a49ad12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:50, skipping insertion in model container [2021-10-16 02:40:50,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:40:50" (1/1) ... [2021-10-16 02:40:50,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:40:50,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:40:50,739 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_65e745fd-aa51-4863-aa24-0393cb48db3b/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound1.c[573,586] [2021-10-16 02:40:50,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:40:50,782 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:40:50,800 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_65e745fd-aa51-4863-aa24-0393cb48db3b/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound1.c[573,586] [2021-10-16 02:40:50,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:40:50,835 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:40:50,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:50 WrapperNode [2021-10-16 02:40:50,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:40:50,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:40:50,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:40:50,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:40:50,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:50" (1/1) ... [2021-10-16 02:40:50,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:50" (1/1) ... [2021-10-16 02:40:50,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:40:50,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:40:50,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:40:50,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:40:50,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:50" (1/1) ... [2021-10-16 02:40:50,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:50" (1/1) ... [2021-10-16 02:40:50,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:50" (1/1) ... [2021-10-16 02:40:50,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:50" (1/1) ... [2021-10-16 02:40:50,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:50" (1/1) ... [2021-10-16 02:40:50,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:50" (1/1) ... [2021-10-16 02:40:50,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:50" (1/1) ... [2021-10-16 02:40:50,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:40:50,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:40:50,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:40:50,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:40:50,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:50" (1/1) ... [2021-10-16 02:40:50,910 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:40:50,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:40:50,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:40:50,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:40:51,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:40:51,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:40:51,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:40:51,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:40:51,458 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:40:51,459 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-16 02:40:51,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:40:51 BoogieIcfgContainer [2021-10-16 02:40:51,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:40:51,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:40:51,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:40:51,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:40:51,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:40:50" (1/3) ... [2021-10-16 02:40:51,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1efd2b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:40:51, skipping insertion in model container [2021-10-16 02:40:51,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:50" (2/3) ... [2021-10-16 02:40:51,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1efd2b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:40:51, skipping insertion in model container [2021-10-16 02:40:51,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:40:51" (3/3) ... [2021-10-16 02:40:51,472 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound1.c [2021-10-16 02:40:51,478 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:40:51,478 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 02:40:51,533 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:40:51,540 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:40:51,541 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 02:40:51,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:51,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:40:51,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:40:51,563 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:40:51,564 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:40:51,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:40:51,570 INFO L82 PathProgramCache]: Analyzing trace with hash 100327247, now seen corresponding path program 1 times [2021-10-16 02:40:51,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:40:51,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651626806] [2021-10-16 02:40:51,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:51,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:40:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:40:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:40:51,766 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:40:51,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651626806] [2021-10-16 02:40:51,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651626806] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:40:51,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:40:51,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:40:51,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212596526] [2021-10-16 02:40:51,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:40:51,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:40:51,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:40:51,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:40:51,795 INFO L87 Difference]: Start difference. First operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-10-16 02:40:51,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:40:51,810 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2021-10-16 02:40:51,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:40:51,811 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2021-10-16 02:40:51,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:40:51,820 INFO L225 Difference]: With dead ends: 25 [2021-10-16 02:40:51,821 INFO L226 Difference]: Without dead ends: 11 [2021-10-16 02:40:51,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:40:51,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-16 02:40:51,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-16 02:40:51,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) [2021-10-16 02:40:51,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-10-16 02:40:51,857 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2021-10-16 02:40:51,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:40:51,857 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-16 02:40:51,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-10-16 02:40:51,858 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-10-16 02:40:51,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:40:51,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:40:51,859 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:40:51,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:40:51,860 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:40:51,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:40:51,861 INFO L82 PathProgramCache]: Analyzing trace with hash 99468274, now seen corresponding path program 1 times [2021-10-16 02:40:51,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:40:51,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145396147] [2021-10-16 02:40:51,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:51,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:40:51,882 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:40:51,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692314075] [2021-10-16 02:40:51,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:51,884 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:40:51,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:40:51,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:40:51,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:40:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:40:51,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:40:51,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:40:52,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:40:52,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:40:52,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:40:52,283 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:40:52,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145396147] [2021-10-16 02:40:52,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:40:52,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692314075] [2021-10-16 02:40:52,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692314075] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:40:52,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:40:52,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:40:52,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214734558] [2021-10-16 02:40:52,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:40:52,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:40:52,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:40:52,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:40:52,289 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:40:52,372 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-10-16 02:40:52,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:40:52,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-16 02:40:52,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:40:52,374 INFO L225 Difference]: With dead ends: 25 [2021-10-16 02:40:52,374 INFO L226 Difference]: Without dead ends: 23 [2021-10-16 02:40:52,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.8ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:40:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-16 02:40:52,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 14. [2021-10-16 02:40:52,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) [2021-10-16 02:40:52,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-16 02:40:52,389 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2021-10-16 02:40:52,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:40:52,389 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-16 02:40:52,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:52,390 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-16 02:40:52,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:40:52,391 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:40:52,392 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:40:52,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:40:52,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-16 02:40:52,608 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:40:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:40:52,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1211488473, now seen corresponding path program 1 times [2021-10-16 02:40:52,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:40:52,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258368196] [2021-10-16 02:40:52,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:52,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:40:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:40:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:40:52,749 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:40:52,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258368196] [2021-10-16 02:40:52,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258368196] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:40:52,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:40:52,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:40:52,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599113775] [2021-10-16 02:40:52,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:40:52,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:40:52,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:40:52,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:40:52,752 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:52,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:40:52,771 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-10-16 02:40:52,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:40:52,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 02:40:52,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:40:52,774 INFO L225 Difference]: With dead ends: 18 [2021-10-16 02:40:52,774 INFO L226 Difference]: Without dead ends: 14 [2021-10-16 02:40:52,775 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:40:52,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-16 02:40:52,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-16 02:40:52,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 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) [2021-10-16 02:40:52,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-16 02:40:52,778 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 6 [2021-10-16 02:40:52,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:40:52,781 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-16 02:40:52,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:52,782 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-16 02:40:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:40:52,783 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:40:52,783 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:40:52,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:40:52,786 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:40:52,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:40:52,787 INFO L82 PathProgramCache]: Analyzing trace with hash -263176832, now seen corresponding path program 1 times [2021-10-16 02:40:52,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:40:52,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905501623] [2021-10-16 02:40:52,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:52,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:40:52,804 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:40:52,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738396039] [2021-10-16 02:40:52,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:52,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:40:52,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:40:52,806 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:40:52,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 02:40:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:40:52,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:40:52,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:40:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:40:53,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:40:53,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:40:53,172 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:40:53,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905501623] [2021-10-16 02:40:53,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:40:53,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738396039] [2021-10-16 02:40:53,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738396039] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:40:53,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:40:53,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-10-16 02:40:53,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994388442] [2021-10-16 02:40:53,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:40:53,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:40:53,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:40:53,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:40:53,179 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2021-10-16 02:40:53,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:40:53,299 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-16 02:40:53,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:40:53,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 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 8 [2021-10-16 02:40:53,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:40:53,300 INFO L225 Difference]: With dead ends: 18 [2021-10-16 02:40:53,301 INFO L226 Difference]: Without dead ends: 12 [2021-10-16 02:40:53,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 117.8ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:40:53,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-16 02:40:53,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-10-16 02:40:53,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 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) [2021-10-16 02:40:53,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-16 02:40:53,307 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2021-10-16 02:40:53,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:40:53,307 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-16 02:40:53,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2021-10-16 02:40:53,308 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-16 02:40:53,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:40:53,309 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:40:53,309 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:40:53,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:40:53,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:40:53,527 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:40:53,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:40:53,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1349036158, now seen corresponding path program 1 times [2021-10-16 02:40:53,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:40:53,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701051479] [2021-10-16 02:40:53,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:53,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:40:53,542 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:40:53,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187438783] [2021-10-16 02:40:53,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:53,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:40:53,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:40:53,545 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:40:53,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 02:40:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:40:53,630 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:40:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:40:53,674 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:40:53,675 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:40:53,676 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:40:53,678 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:40:53,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:40:53,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:40:53,886 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:40:53,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:40:53 BoogieIcfgContainer [2021-10-16 02:40:53,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:40:53,927 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:40:53,927 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:40:53,927 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:40:53,927 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:40:51" (3/4) ... [2021-10-16 02:40:53,929 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:40:53,972 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:40:53,972 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:40:53,974 INFO L168 Benchmark]: Toolchain (without parser) took 3473.36 ms. Allocated memory is still 104.9 MB. Free memory was 78.0 MB in the beginning and 56.8 MB in the end (delta: 21.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:40:53,974 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory is still 48.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:40:53,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.98 ms. Allocated memory is still 104.9 MB. Free memory was 78.0 MB in the beginning and 83.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:40:53,976 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.13 ms. Allocated memory is still 104.9 MB. Free memory was 83.2 MB in the beginning and 81.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:40:53,976 INFO L168 Benchmark]: Boogie Preprocessor took 23.58 ms. Allocated memory is still 104.9 MB. Free memory was 81.8 MB in the beginning and 80.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:40:53,977 INFO L168 Benchmark]: RCFGBuilder took 561.42 ms. Allocated memory is still 104.9 MB. Free memory was 80.7 MB in the beginning and 66.8 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:40:53,978 INFO L168 Benchmark]: TraceAbstraction took 2462.52 ms. Allocated memory is still 104.9 MB. Free memory was 66.1 MB in the beginning and 58.9 MB in the end (delta: 7.2 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:40:53,978 INFO L168 Benchmark]: Witness Printer took 45.41 ms. Allocated memory is still 104.9 MB. Free memory was 58.9 MB in the beginning and 56.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:40:53,982 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory is still 48.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.98 ms. Allocated memory is still 104.9 MB. Free memory was 78.0 MB in the beginning and 83.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.13 ms. Allocated memory is still 104.9 MB. Free memory was 83.2 MB in the beginning and 81.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.58 ms. Allocated memory is still 104.9 MB. Free memory was 81.8 MB in the beginning and 80.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 561.42 ms. Allocated memory is still 104.9 MB. Free memory was 80.7 MB in the beginning and 66.8 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2462.52 ms. Allocated memory is still 104.9 MB. Free memory was 66.1 MB in the beginning and 58.9 MB in the end (delta: 7.2 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Witness Printer took 45.41 ms. Allocated memory is still 104.9 MB. Free memory was 58.9 MB in the beginning and 56.8 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L13] COND FALSE !(!cond) [L13] COND FALSE !(!cond) [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0] [L36] EXPR counter++ VAL [counter=1] [L36] COND TRUE counter++<1 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=1] [L36] EXPR counter++ VAL [counter=2] [L36] COND FALSE !(counter++<1) [L16] COND TRUE !(cond) VAL [counter=2] [L18] reach_error() VAL [counter=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2352.9ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 13.3ms, AutomataDifference: 283.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 40 SDtfs, 37 SDslu, 48 SDs, 0 SdLazy, 45 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 105.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 180.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 35.1ms AutomataMinimizationTime, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.4ms SsaConstructionTime, 124.8ms SatisfiabilityAnalysisTime, 798.8ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 31 ConstructedInterpolants, 2 QuantifiedInterpolants, 146 SizeOfPredicates, 20 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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! [2021-10-16 02:40:54,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e745fd-aa51-4863-aa24-0393cb48db3b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...