./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS --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 f4dc35f578dc1494a61593c536b677f3beb3e4db21638b64de73547c5a37e2be --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 03:55:27,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:55:27,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:55:27,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:55:27,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:55:27,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:55:27,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:55:27,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:55:27,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:55:27,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:55:27,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:55:27,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:55:27,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:55:27,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:55:27,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:55:27,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:55:27,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:55:27,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:55:27,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:55:27,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:55:27,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:55:27,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:55:27,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:55:27,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:55:27,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:55:27,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:55:27,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:55:27,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:55:27,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:55:27,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:55:27,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:55:27,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:55:27,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:55:27,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:55:27,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:55:27,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:55:27,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:55:27,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:55:27,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:55:27,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:55:27,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:55:27,911 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:55:27,952 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:55:27,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:55:27,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:55:27,953 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:55:27,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:55:27,954 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:55:27,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:55:27,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:55:27,955 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:55:27,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:55:27,957 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:55:27,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:55:27,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:55:27,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:55:27,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:55:27,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:55:27,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:55:27,958 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:55:27,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:55:27,959 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:55:27,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:55:27,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:55:27,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:55:27,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:55:27,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:55:27,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:55:27,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:55:27,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:55:27,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:55:27,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:55:27,961 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:55:27,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:55:27,962 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:55:27,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:55:27,962 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4dc35f578dc1494a61593c536b677f3beb3e4db21638b64de73547c5a37e2be [2022-11-23 03:55:28,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:55:28,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:55:28,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:55:28,248 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:55:28,249 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:55:28,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c [2022-11-23 03:55:31,404 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:55:31,602 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:55:31,603 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c [2022-11-23 03:55:31,610 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/data/15012682c/d8e189db9c354b8887205b2592cc5ff3/FLAG13cdf2f74 [2022-11-23 03:55:31,630 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/data/15012682c/d8e189db9c354b8887205b2592cc5ff3 [2022-11-23 03:55:31,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:55:31,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:55:31,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:55:31,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:55:31,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:55:31,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:55:31" (1/1) ... [2022-11-23 03:55:31,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53cec9dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:31, skipping insertion in model container [2022-11-23 03:55:31,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:55:31" (1/1) ... [2022-11-23 03:55:31,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:55:31,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:55:31,817 WARN L237 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_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c[709,722] [2022-11-23 03:55:31,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:55:31,848 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:55:31,859 WARN L237 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_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c[709,722] [2022-11-23 03:55:31,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:55:31,882 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:55:31,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:31 WrapperNode [2022-11-23 03:55:31,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:55:31,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:55:31,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:55:31,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:55:31,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:31" (1/1) ... [2022-11-23 03:55:31,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:31" (1/1) ... [2022-11-23 03:55:31,930 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2022-11-23 03:55:31,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:55:31,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:55:31,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:55:31,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:55:31,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:31" (1/1) ... [2022-11-23 03:55:31,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:31" (1/1) ... [2022-11-23 03:55:31,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:31" (1/1) ... [2022-11-23 03:55:31,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:31" (1/1) ... [2022-11-23 03:55:31,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:31" (1/1) ... [2022-11-23 03:55:31,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:31" (1/1) ... [2022-11-23 03:55:31,957 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:31" (1/1) ... [2022-11-23 03:55:31,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:31" (1/1) ... [2022-11-23 03:55:31,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:55:31,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:55:31,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:55:31,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:55:31,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:31" (1/1) ... [2022-11-23 03:55:31,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:55:31,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:55:32,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:55:32,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:55:32,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:55:32,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:55:32,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:55:32,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:55:32,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 03:55:32,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 03:55:32,098 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:55:32,100 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:55:32,251 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:55:32,258 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:55:32,258 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 03:55:32,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:55:32 BoogieIcfgContainer [2022-11-23 03:55:32,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:55:32,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:55:32,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:55:32,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:55:32,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:55:31" (1/3) ... [2022-11-23 03:55:32,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e45f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:55:32, skipping insertion in model container [2022-11-23 03:55:32,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:31" (2/3) ... [2022-11-23 03:55:32,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e45f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:55:32, skipping insertion in model container [2022-11-23 03:55:32,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:55:32" (3/3) ... [2022-11-23 03:55:32,303 INFO L112 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound5.c [2022-11-23 03:55:32,333 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:55:32,333 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:55:32,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:55:32,405 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@60c3e1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:55:32,406 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 03:55:32,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 03:55:32,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 03:55:32,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:55:32,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:55:32,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:55:32,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:32,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1821846948, now seen corresponding path program 1 times [2022-11-23 03:55:32,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:32,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325235624] [2022-11-23 03:55:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:32,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:32,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:55:32,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325235624] [2022-11-23 03:55:32,546 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 03:55:32,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389060678] [2022-11-23 03:55:32,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:32,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:55:32,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:55:32,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:55:32,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:55:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:32,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 03:55:32,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:55:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:32,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:55:32,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389060678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:55:32,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:55:32,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:55:32,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027806342] [2022-11-23 03:55:32,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:55:32,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:55:32,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:55:32,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:55:32,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:55:32,700 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-23 03:55:32,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:55:32,723 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2022-11-23 03:55:32,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:55:32,726 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 7 [2022-11-23 03:55:32,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:55:32,734 INFO L225 Difference]: With dead ends: 40 [2022-11-23 03:55:32,734 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 03:55:32,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:55:32,741 INFO L413 NwaCegarLoop]: 27 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, 27 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 [2022-11-23 03:55:32,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:55:32,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 03:55:32,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-23 03:55:32,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 03:55:32,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2022-11-23 03:55:32,794 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 7 [2022-11-23 03:55:32,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:55:32,794 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2022-11-23 03:55:32,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-23 03:55:32,795 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2022-11-23 03:55:32,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 03:55:32,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:55:32,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:55:32,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 03:55:33,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 03:55:33,001 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:55:33,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:33,002 INFO L85 PathProgramCache]: Analyzing trace with hash 178653015, now seen corresponding path program 1 times [2022-11-23 03:55:33,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:33,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583805707] [2022-11-23 03:55:33,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:33,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:33,025 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:55:33,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453965451] [2022-11-23 03:55:33,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:33,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:55:33,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:55:33,034 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:55:33,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:55:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:33,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:55:33,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:55:33,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:33,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:55:33,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:55:33,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583805707] [2022-11-23 03:55:33,193 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:55:33,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453965451] [2022-11-23 03:55:33,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453965451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:55:33,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:55:33,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:55:33,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143629907] [2022-11-23 03:55:33,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:55:33,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:55:33,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:55:33,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:55:33,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:55:33,197 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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) [2022-11-23 03:55:33,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:55:33,218 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2022-11-23 03:55:33,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:55:33,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 [2022-11-23 03:55:33,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:55:33,219 INFO L225 Difference]: With dead ends: 28 [2022-11-23 03:55:33,219 INFO L226 Difference]: Without dead ends: 19 [2022-11-23 03:55:33,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:55:33,221 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 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 [2022-11-23 03:55:33,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:55:33,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-23 03:55:33,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-23 03:55:33,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 03:55:33,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2022-11-23 03:55:33,229 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 8 [2022-11-23 03:55:33,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:55:33,229 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-11-23 03:55:33,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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) [2022-11-23 03:55:33,229 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2022-11-23 03:55:33,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 03:55:33,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:55:33,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:55:33,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:55:33,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:55:33,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:55:33,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:33,436 INFO L85 PathProgramCache]: Analyzing trace with hash 180321311, now seen corresponding path program 1 times [2022-11-23 03:55:33,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:33,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463638651] [2022-11-23 03:55:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:33,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:33,448 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:55:33,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668679711] [2022-11-23 03:55:33,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:33,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:55:33,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:55:33,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:55:33,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:55:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:55:33,525 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 03:55:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:55:33,564 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 03:55:33,564 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 03:55:33,565 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 03:55:33,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:55:33,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:55:33,778 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-23 03:55:33,782 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 03:55:33,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:55:33 BoogieIcfgContainer [2022-11-23 03:55:33,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 03:55:33,808 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 03:55:33,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 03:55:33,808 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 03:55:33,809 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:55:32" (3/4) ... [2022-11-23 03:55:33,812 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 03:55:33,812 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 03:55:33,813 INFO L158 Benchmark]: Toolchain (without parser) took 2178.56ms. Allocated memory is still 165.7MB. Free memory was 122.0MB in the beginning and 119.5MB in the end (delta: 2.4MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2022-11-23 03:55:33,813 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 132.1MB. Free memory was 76.0MB in the beginning and 75.9MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:55:33,814 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.78ms. Allocated memory is still 165.7MB. Free memory was 122.0MB in the beginning and 111.5MB in the end (delta: 10.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 03:55:33,814 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.13ms. Allocated memory is still 165.7MB. Free memory was 111.0MB in the beginning and 109.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:55:33,815 INFO L158 Benchmark]: Boogie Preprocessor took 28.13ms. Allocated memory is still 165.7MB. Free memory was 109.8MB in the beginning and 108.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:55:33,815 INFO L158 Benchmark]: RCFGBuilder took 295.06ms. Allocated memory is still 165.7MB. Free memory was 108.1MB in the beginning and 97.8MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 03:55:33,816 INFO L158 Benchmark]: TraceAbstraction took 1543.36ms. Allocated memory is still 165.7MB. Free memory was 96.8MB in the beginning and 119.5MB in the end (delta: -22.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:55:33,816 INFO L158 Benchmark]: Witness Printer took 4.46ms. Allocated memory is still 165.7MB. Free memory is still 119.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:55:33,819 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 132.1MB. Free memory was 76.0MB in the beginning and 75.9MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.78ms. Allocated memory is still 165.7MB. Free memory was 122.0MB in the beginning and 111.5MB in the end (delta: 10.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.13ms. Allocated memory is still 165.7MB. Free memory was 111.0MB in the beginning and 109.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.13ms. Allocated memory is still 165.7MB. Free memory was 109.8MB in the beginning and 108.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 295.06ms. Allocated memory is still 165.7MB. Free memory was 108.1MB in the beginning and 97.8MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1543.36ms. Allocated memory is still 165.7MB. Free memory was 96.8MB in the beginning and 119.5MB in the end (delta: -22.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.46ms. Allocated memory is still 165.7MB. Free memory is still 119.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [a=2, counter=0, r=1, s=13/4, x=2] [L33] EXPR counter++ VAL [a=2, counter=1, counter++=0, r=1, s=13/4, x=2] [L33] COND TRUE counter++<5 [L34] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [counter=1, unknown-#in~cond-unknown=0] [L17] COND TRUE !(cond) VAL [cond=0, counter=1, unknown-#in~cond-unknown=0] [L19] reach_error() VAL [cond=0, counter=1, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 48 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 90 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 could not prove your program: unable to determine feasibility of some traces [2022-11-23 03:55:33,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS --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 f4dc35f578dc1494a61593c536b677f3beb3e4db21638b64de73547c5a37e2be --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 03:55:36,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:55:36,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:55:36,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:55:36,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:55:36,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:55:36,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:55:36,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:55:36,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:55:36,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:55:36,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:55:36,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:55:36,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:55:36,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:55:36,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:55:36,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:55:36,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:55:36,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:55:36,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:55:36,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:55:36,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:55:36,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:55:36,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:55:36,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:55:36,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:55:36,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:55:36,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:55:36,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:55:36,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:55:36,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:55:36,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:55:36,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:55:36,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:55:36,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:55:36,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:55:36,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:55:36,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:55:36,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:55:36,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:55:36,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:55:36,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:55:36,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-23 03:55:36,522 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:55:36,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:55:36,524 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:55:36,524 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:55:36,525 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:55:36,525 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:55:36,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:55:36,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:55:36,526 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:55:36,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:55:36,528 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:55:36,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:55:36,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:55:36,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:55:36,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:55:36,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:55:36,529 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 03:55:36,529 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 03:55:36,529 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 03:55:36,529 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:55:36,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:55:36,530 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:55:36,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:55:36,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:55:36,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:55:36,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:55:36,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:55:36,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:55:36,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:55:36,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:55:36,532 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-23 03:55:36,532 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 03:55:36,533 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:55:36,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:55:36,533 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:55:36,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:55:36,533 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-23 03:55:36,534 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4dc35f578dc1494a61593c536b677f3beb3e4db21638b64de73547c5a37e2be [2022-11-23 03:55:36,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:55:36,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:55:36,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:55:36,930 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:55:36,930 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:55:36,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c [2022-11-23 03:55:40,149 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:55:40,404 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:55:40,405 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c [2022-11-23 03:55:40,411 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/data/769721b0c/d774984420de41d78c1408569481f76d/FLAG67e4b7538 [2022-11-23 03:55:40,428 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/data/769721b0c/d774984420de41d78c1408569481f76d [2022-11-23 03:55:40,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:55:40,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:55:40,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:55:40,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:55:40,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:55:40,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:55:40" (1/1) ... [2022-11-23 03:55:40,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe935f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:40, skipping insertion in model container [2022-11-23 03:55:40,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:55:40" (1/1) ... [2022-11-23 03:55:40,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:55:40,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:55:40,672 WARN L237 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_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c[709,722] [2022-11-23 03:55:40,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:55:40,734 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:55:40,750 WARN L237 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_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c[709,722] [2022-11-23 03:55:40,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:55:40,795 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:55:40,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:40 WrapperNode [2022-11-23 03:55:40,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:55:40,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:55:40,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:55:40,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:55:40,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:40" (1/1) ... [2022-11-23 03:55:40,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:40" (1/1) ... [2022-11-23 03:55:40,864 INFO L138 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-11-23 03:55:40,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:55:40,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:55:40,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:55:40,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:55:40,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:40" (1/1) ... [2022-11-23 03:55:40,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:40" (1/1) ... [2022-11-23 03:55:40,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:40" (1/1) ... [2022-11-23 03:55:40,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:40" (1/1) ... [2022-11-23 03:55:40,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:40" (1/1) ... [2022-11-23 03:55:40,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:40" (1/1) ... [2022-11-23 03:55:40,935 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:40" (1/1) ... [2022-11-23 03:55:40,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:40" (1/1) ... [2022-11-23 03:55:40,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:55:40,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:55:40,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:55:40,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:55:40,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:40" (1/1) ... [2022-11-23 03:55:40,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:55:40,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:55:40,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:55:41,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:55:41,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:55:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 03:55:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:55:41,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:55:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 03:55:41,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 03:55:41,128 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:55:41,130 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:55:42,808 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:55:42,814 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:55:42,814 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 03:55:42,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:55:42 BoogieIcfgContainer [2022-11-23 03:55:42,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:55:42,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:55:42,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:55:42,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:55:42,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:55:40" (1/3) ... [2022-11-23 03:55:42,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f13e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:55:42, skipping insertion in model container [2022-11-23 03:55:42,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:40" (2/3) ... [2022-11-23 03:55:42,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f13e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:55:42, skipping insertion in model container [2022-11-23 03:55:42,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:55:42" (3/3) ... [2022-11-23 03:55:42,826 INFO L112 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound5.c [2022-11-23 03:55:42,846 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:55:42,862 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:55:42,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:55:42,959 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@58d24895, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:55:42,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 03:55:42,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 03:55:42,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 03:55:42,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:55:42,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:55:42,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:55:43,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:43,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1821846948, now seen corresponding path program 1 times [2022-11-23 03:55:43,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:55:43,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732574677] [2022-11-23 03:55:43,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:43,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:55:43,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:55:43,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:55:43,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 03:55:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:43,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 03:55:43,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:55:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:43,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:55:43,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:55:43,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732574677] [2022-11-23 03:55:43,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732574677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:55:43,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:55:43,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:55:43,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577314145] [2022-11-23 03:55:43,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:55:43,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:55:43,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:55:43,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:55:43,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:55:43,296 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-23 03:55:43,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:55:43,318 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2022-11-23 03:55:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:55:43,320 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 7 [2022-11-23 03:55:43,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:55:43,327 INFO L225 Difference]: With dead ends: 40 [2022-11-23 03:55:43,327 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 03:55:43,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:55:43,334 INFO L413 NwaCegarLoop]: 27 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, 27 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 [2022-11-23 03:55:43,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:55:43,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 03:55:43,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-23 03:55:43,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 03:55:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2022-11-23 03:55:43,379 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 7 [2022-11-23 03:55:43,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:55:43,379 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2022-11-23 03:55:43,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-23 03:55:43,380 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2022-11-23 03:55:43,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 03:55:43,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:55:43,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:55:43,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-23 03:55:43,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:55:43,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:55:43,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:43,598 INFO L85 PathProgramCache]: Analyzing trace with hash 178653015, now seen corresponding path program 1 times [2022-11-23 03:55:43,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:55:43,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898140703] [2022-11-23 03:55:43,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:43,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:55:43,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:55:43,601 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:55:43,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 03:55:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:43,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:55:43,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:55:43,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:43,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:55:43,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:55:43,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898140703] [2022-11-23 03:55:43,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898140703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:55:43,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:55:43,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:55:43,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635762139] [2022-11-23 03:55:43,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:55:43,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:55:43,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:55:43,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:55:43,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:55:43,831 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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) [2022-11-23 03:55:43,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:55:43,899 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2022-11-23 03:55:43,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:55:43,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 [2022-11-23 03:55:43,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:55:43,901 INFO L225 Difference]: With dead ends: 28 [2022-11-23 03:55:43,901 INFO L226 Difference]: Without dead ends: 19 [2022-11-23 03:55:43,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:55:43,903 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:55:43,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:55:43,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-23 03:55:43,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-23 03:55:43,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 03:55:43,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2022-11-23 03:55:43,911 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 8 [2022-11-23 03:55:43,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:55:43,911 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-11-23 03:55:43,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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) [2022-11-23 03:55:43,912 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2022-11-23 03:55:43,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 03:55:43,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:55:43,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:55:43,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:55:44,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:55:44,128 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:55:44,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:44,130 INFO L85 PathProgramCache]: Analyzing trace with hash 180321311, now seen corresponding path program 1 times [2022-11-23 03:55:44,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:55:44,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857804415] [2022-11-23 03:55:44,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:44,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:55:44,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:55:44,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:55:44,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-23 03:55:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:55:44,301 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 03:55:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:55:44,415 ERROR L250 FreeRefinementEngine]: Caught unknown exception: Invalid model [2022-11-23 03:55:44,415 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-23 03:55:44,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:55:44,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:55:44,616 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Invalid model at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1458) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseGetValueResult(Executor.java:275) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.getValue(Scriptor.java:188) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getValue(WrapperScript.java:193) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getValue(WrapperScript.java:193) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.getValues(SmtUtils.java:2254) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.getValue(TraceCheck.java:443) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.lambda$0(TraceCheck.java:417) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:429) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:226) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:361) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:226) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-23 03:55:44,620 INFO L158 Benchmark]: Toolchain (without parser) took 4187.53ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 47.0MB in the beginning and 52.7MB in the end (delta: -5.7MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2022-11-23 03:55:44,620 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 69.2MB. Free memory was 47.6MB in the beginning and 47.5MB in the end (delta: 49.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:55:44,621 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.01ms. Allocated memory is still 69.2MB. Free memory was 46.8MB in the beginning and 35.4MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 03:55:44,621 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.21ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 35.4MB in the beginning and 68.5MB in the end (delta: -33.2MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2022-11-23 03:55:44,622 INFO L158 Benchmark]: Boogie Preprocessor took 73.94ms. Allocated memory is still 88.1MB. Free memory was 68.5MB in the beginning and 67.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:55:44,622 INFO L158 Benchmark]: RCFGBuilder took 1877.31ms. Allocated memory is still 88.1MB. Free memory was 66.8MB in the beginning and 55.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 03:55:44,623 INFO L158 Benchmark]: TraceAbstraction took 1800.01ms. Allocated memory is still 88.1MB. Free memory was 54.6MB in the beginning and 52.7MB in the end (delta: 1.9MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2022-11-23 03:55:44,626 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 69.2MB. Free memory was 47.6MB in the beginning and 47.5MB in the end (delta: 49.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.01ms. Allocated memory is still 69.2MB. Free memory was 46.8MB in the beginning and 35.4MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.21ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 35.4MB in the beginning and 68.5MB in the end (delta: -33.2MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.94ms. Allocated memory is still 88.1MB. Free memory was 68.5MB in the beginning and 67.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1877.31ms. Allocated memory is still 88.1MB. Free memory was 66.8MB in the beginning and 55.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1800.01ms. Allocated memory is still 88.1MB. Free memory was 54.6MB in the beginning and 52.7MB in the end (delta: 1.9MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Invalid model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Invalid model: de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1458) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-23 03:55:44,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd1a27e-75a9-4340-a7f8-c53eff2acae3/bin/uautomizer-QkZJyEgLgS/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 Result: ERROR: ExceptionOrErrorResult: SMTLIBException: Invalid model