./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa --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 fd71e81526c53a209c01167c5f9fb82334550a28a2ce7544b173ad186de6362e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:41:16,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:41:16,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:41:16,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:41:16,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:41:16,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:41:16,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:41:16,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:41:16,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:41:16,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:41:16,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:41:16,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:41:16,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:41:16,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:41:16,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:41:16,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:41:16,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:41:16,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:41:16,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:41:16,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:41:16,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:41:16,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:41:16,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:41:16,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:41:16,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:41:16,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:41:16,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:41:16,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:41:16,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:41:16,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:41:16,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:41:16,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:41:16,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:41:16,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:41:16,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:41:16,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:41:16,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:41:16,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:41:16,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:41:16,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:41:16,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:41:16,978 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:41:17,000 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:41:17,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:41:17,000 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:41:17,000 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:41:17,001 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:41:17,001 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:41:17,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:41:17,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:41:17,002 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:41:17,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:41:17,002 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:41:17,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:41:17,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:41:17,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:41:17,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:41:17,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:41:17,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:41:17,003 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:41:17,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:41:17,004 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:41:17,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:41:17,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:41:17,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:41:17,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:41:17,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:41:17,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:41:17,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:41:17,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:41:17,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:41:17,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:41:17,005 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:41:17,005 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:41:17,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:41:17,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:41:17,006 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_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd71e81526c53a209c01167c5f9fb82334550a28a2ce7544b173ad186de6362e [2021-12-07 01:41:17,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:41:17,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:41:17,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:41:17,197 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:41:17,198 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:41:17,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound1.c [2021-12-07 01:41:17,239 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/data/bf456f0bf/327ffadd518e4ba699086b9ca9fb6e96/FLAG0a1758749 [2021-12-07 01:41:17,594 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:41:17,595 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound1.c [2021-12-07 01:41:17,600 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/data/bf456f0bf/327ffadd518e4ba699086b9ca9fb6e96/FLAG0a1758749 [2021-12-07 01:41:17,610 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/data/bf456f0bf/327ffadd518e4ba699086b9ca9fb6e96 [2021-12-07 01:41:17,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:41:17,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:41:17,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:41:17,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:41:17,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:41:17,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:41:17" (1/1) ... [2021-12-07 01:41:17,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d5d8bf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:17, skipping insertion in model container [2021-12-07 01:41:17,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:41:17" (1/1) ... [2021-12-07 01:41:17,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:41:17,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:41:17,746 WARN L230 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_e8895e1e-bd77-4f82-b814-a8c0a95c007d/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound1.c[555,568] [2021-12-07 01:41:17,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:41:17,765 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:41:17,774 WARN L230 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_e8895e1e-bd77-4f82-b814-a8c0a95c007d/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound1.c[555,568] [2021-12-07 01:41:17,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:41:17,788 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:41:17,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:17 WrapperNode [2021-12-07 01:41:17,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:41:17,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:41:17,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:41:17,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:41:17,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:17" (1/1) ... [2021-12-07 01:41:17,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:17" (1/1) ... [2021-12-07 01:41:17,818 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2021-12-07 01:41:17,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:41:17,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:41:17,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:41:17,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:41:17,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:17" (1/1) ... [2021-12-07 01:41:17,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:17" (1/1) ... [2021-12-07 01:41:17,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:17" (1/1) ... [2021-12-07 01:41:17,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:17" (1/1) ... [2021-12-07 01:41:17,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:17" (1/1) ... [2021-12-07 01:41:17,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:17" (1/1) ... [2021-12-07 01:41:17,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:17" (1/1) ... [2021-12-07 01:41:17,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:41:17,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:41:17,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:41:17,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:41:17,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:17" (1/1) ... [2021-12-07 01:41:17,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:41:17,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:41:17,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:41:17,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:41:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:41:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:41:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:41:17,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:41:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-07 01:41:17,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-07 01:41:17,949 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:41:17,950 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:41:18,015 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:41:18,019 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:41:18,019 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 01:41:18,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:41:18 BoogieIcfgContainer [2021-12-07 01:41:18,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:41:18,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:41:18,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:41:18,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:41:18,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:41:17" (1/3) ... [2021-12-07 01:41:18,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2821abf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:41:18, skipping insertion in model container [2021-12-07 01:41:18,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:17" (2/3) ... [2021-12-07 01:41:18,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2821abf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:41:18, skipping insertion in model container [2021-12-07 01:41:18,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:41:18" (3/3) ... [2021-12-07 01:41:18,026 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_unwindbound1.c [2021-12-07 01:41:18,030 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:41:18,030 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:41:18,065 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:41:18,070 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 [2021-12-07 01:41:18,071 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:41:18,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 01:41:18,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-07 01:41:18,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:18,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:18,088 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:41:18,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:18,092 INFO L85 PathProgramCache]: Analyzing trace with hash 561702714, now seen corresponding path program 1 times [2021-12-07 01:41:18,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:41:18,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288573937] [2021-12-07 01:41:18,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:18,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:41:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:18,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:18,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:41:18,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288573937] [2021-12-07 01:41:18,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288573937] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:41:18,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:41:18,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:41:18,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401342355] [2021-12-07 01:41:18,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:41:18,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 01:41:18,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:41:18,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 01:41:18,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:41:18,224 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:18,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:18,237 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2021-12-07 01:41:18,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 01:41:18,239 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-07 01:41:18,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:18,246 INFO L225 Difference]: With dead ends: 34 [2021-12-07 01:41:18,247 INFO L226 Difference]: Without dead ends: 14 [2021-12-07 01:41:18,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:41:18,254 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:18,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:41:18,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-07 01:41:18,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-07 01:41:18,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:41:18,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-12-07 01:41:18,282 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2021-12-07 01:41:18,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:18,282 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-12-07 01:41:18,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:18,283 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-12-07 01:41:18,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-07 01:41:18,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:18,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:18,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:41:18,284 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:41:18,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:18,284 INFO L85 PathProgramCache]: Analyzing trace with hash 180228959, now seen corresponding path program 1 times [2021-12-07 01:41:18,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:41:18,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196411752] [2021-12-07 01:41:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:18,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:41:18,298 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:41:18,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1534892130] [2021-12-07 01:41:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:18,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:41:18,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:41:18,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:41:18,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:41:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:18,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 01:41:18,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:18,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:18,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:41:18,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:41:18,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196411752] [2021-12-07 01:41:18,448 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:41:18,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534892130] [2021-12-07 01:41:18,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534892130] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:41:18,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:41:18,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:41:18,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786102530] [2021-12-07 01:41:18,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:41:18,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:41:18,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:41:18,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:41:18,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:41:18,453 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:18,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:18,487 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-12-07 01:41:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:41:18,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-07 01:41:18,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:18,489 INFO L225 Difference]: With dead ends: 25 [2021-12-07 01:41:18,489 INFO L226 Difference]: Without dead ends: 23 [2021-12-07 01:41:18,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:41:18,490 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:18,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 45 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:41:18,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-07 01:41:18,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2021-12-07 01:41:18,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 01:41:18,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-12-07 01:41:18,496 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 8 [2021-12-07 01:41:18,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:18,496 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-12-07 01:41:18,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:18,496 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-12-07 01:41:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-07 01:41:18,497 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:18,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:18,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:41:18,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:41:18,698 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:41:18,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:18,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1219556645, now seen corresponding path program 1 times [2021-12-07 01:41:18,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:41:18,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236832945] [2021-12-07 01:41:18,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:18,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:41:18,714 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:41:18,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [890673494] [2021-12-07 01:41:18,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:18,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:41:18,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:41:18,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:41:18,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:41:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:18,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:41:18,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:18,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:41:18,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:41:18,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236832945] [2021-12-07 01:41:18,795 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:41:18,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890673494] [2021-12-07 01:41:18,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890673494] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:41:18,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:41:18,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:41:18,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012579598] [2021-12-07 01:41:18,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:41:18,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:41:18,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:41:18,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:41:18,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:41:18,797 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:18,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:18,806 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-12-07 01:41:18,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:41:18,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-07 01:41:18,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:18,808 INFO L225 Difference]: With dead ends: 29 [2021-12-07 01:41:18,808 INFO L226 Difference]: Without dead ends: 21 [2021-12-07 01:41:18,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:41:18,809 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:18,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:41:18,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-07 01:41:18,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-12-07 01:41:18,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 01:41:18,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-12-07 01:41:18,818 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 9 [2021-12-07 01:41:18,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:18,818 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-12-07 01:41:18,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:18,819 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-12-07 01:41:18,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-07 01:41:18,819 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:18,819 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:18,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 01:41:19,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:41:19,022 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:41:19,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:19,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1817042812, now seen corresponding path program 1 times [2021-12-07 01:41:19,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:41:19,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849425592] [2021-12-07 01:41:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:19,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:41:19,057 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:41:19,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656631659] [2021-12-07 01:41:19,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:19,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:41:19,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:41:19,062 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:41:19,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 01:41:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:41:19,182 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:41:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:41:19,208 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:41:19,208 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-07 01:41:19,209 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-07 01:41:19,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 01:41:19,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:41:19,421 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-12-07 01:41:19,429 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 01:41:19,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:41:19 BoogieIcfgContainer [2021-12-07 01:41:19,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 01:41:19,495 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 01:41:19,495 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 01:41:19,495 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 01:41:19,496 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:41:18" (3/4) ... [2021-12-07 01:41:19,498 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-07 01:41:19,528 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 01:41:19,528 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 01:41:19,529 INFO L158 Benchmark]: Toolchain (without parser) took 1916.40ms. Allocated memory was 121.6MB in the beginning and 148.9MB in the end (delta: 27.3MB). Free memory was 78.3MB in the beginning and 117.7MB in the end (delta: -39.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:41:19,529 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:41:19,529 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.52ms. Allocated memory is still 121.6MB. Free memory was 78.2MB in the beginning and 95.5MB in the end (delta: -17.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-07 01:41:19,530 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.47ms. Allocated memory is still 121.6MB. Free memory was 95.5MB in the beginning and 93.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:41:19,530 INFO L158 Benchmark]: Boogie Preprocessor took 18.28ms. Allocated memory is still 121.6MB. Free memory was 93.8MB in the beginning and 92.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:41:19,530 INFO L158 Benchmark]: RCFGBuilder took 182.80ms. Allocated memory is still 121.6MB. Free memory was 92.7MB in the beginning and 83.9MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-07 01:41:19,531 INFO L158 Benchmark]: TraceAbstraction took 1472.17ms. Allocated memory was 121.6MB in the beginning and 148.9MB in the end (delta: 27.3MB). Free memory was 83.4MB in the beginning and 119.8MB in the end (delta: -36.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:41:19,531 INFO L158 Benchmark]: Witness Printer took 33.84ms. Allocated memory is still 148.9MB. Free memory was 119.8MB in the beginning and 117.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:41:19,533 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 174.52ms. Allocated memory is still 121.6MB. Free memory was 78.2MB in the beginning and 95.5MB in the end (delta: -17.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.47ms. Allocated memory is still 121.6MB. Free memory was 95.5MB in the beginning and 93.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.28ms. Allocated memory is still 121.6MB. Free memory was 93.8MB in the beginning and 92.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 182.80ms. Allocated memory is still 121.6MB. Free memory was 92.7MB in the beginning and 83.9MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1472.17ms. Allocated memory was 121.6MB in the beginning and 148.9MB in the end (delta: 27.3MB). Free memory was 83.4MB in the beginning and 119.8MB in the end (delta: -36.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 33.84ms. Allocated memory is still 148.9MB. Free memory was 119.8MB in the beginning and 117.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int z, k; [L25] long long x, y, c; [L26] z = __VERIFIER_nondet_uint() [L27] k = __VERIFIER_nondet_uint() [L29] x = 1 [L30] y = z [L31] c = 1 VAL [c=1, counter=0, x=1, y=0, z=0] [L33] EXPR counter++ VAL [c=1, counter=1, counter++=0, x=1, y=0, z=0] [L33] COND TRUE counter++<1 [L34] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [\old(cond)=1, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [c=1, counter=1, x=1, y=0, z=0] [L36] COND TRUE !(c < k) VAL [c=1, counter=1, k=0, x=1, y=0, z=0] [L45] x = x * (z - 1) VAL [c=1, counter=1, k=0, x=4294967295, y=0, z=0] [L47] CALL __VERIFIER_assert(1 + x - y == 0) VAL [\old(cond)=0, counter=1] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=1] [L18] reach_error() VAL [\old(cond)=0, cond=0, counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 103 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 46 mSDtfsCounter, 29 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=2, InterpolantAutomatonStates: 11, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 1 NumberOfNonLiveVariables, 96 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2021-12-07 01:41:19,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8895e1e-bd77-4f82-b814-a8c0a95c007d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE