./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8 --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 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec --- 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-2329fc7 [2022-12-13 11:16:14,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:16:14,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:16:14,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:16:14,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:16:14,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:16:14,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:16:14,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:16:14,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:16:14,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:16:14,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:16:14,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:16:14,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:16:14,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:16:14,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:16:14,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:16:14,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:16:14,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:16:14,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:16:14,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:16:14,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:16:14,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:16:14,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:16:14,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:16:14,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:16:14,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:16:14,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:16:14,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:16:14,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:16:14,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:16:14,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:16:14,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:16:14,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:16:14,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:16:14,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:16:14,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:16:14,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:16:14,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:16:14,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:16:14,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:16:14,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:16:14,768 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 11:16:14,797 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:16:14,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:16:14,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:16:14,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:16:14,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:16:14,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:16:14,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:16:14,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:16:14,800 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:16:14,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:16:14,805 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:16:14,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:16:14,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:16:14,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:16:14,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:16:14,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:16:14,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:16:14,806 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:16:14,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:16:14,806 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:16:14,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:16:14,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:16:14,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:16:14,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:16:14,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:16:14,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:16:14,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:16:14,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:16:14,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:16:14,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:16:14,808 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:16:14,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:16:14,808 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:16:14,809 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:16:14,809 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:16:14,809 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_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec [2022-12-13 11:16:15,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:16:15,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:16:15,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:16:15,024 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:16:15,025 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:16:15,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2022-12-13 11:16:17,611 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:16:17,739 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:16:17,739 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2022-12-13 11:16:17,744 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/data/7e7d978f8/5b21a21bb0284fffb3ec9c00a949be55/FLAG45aeaa331 [2022-12-13 11:16:17,755 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/data/7e7d978f8/5b21a21bb0284fffb3ec9c00a949be55 [2022-12-13 11:16:17,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:16:17,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:16:17,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:16:17,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:16:17,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:16:17,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:16:17" (1/1) ... [2022-12-13 11:16:17,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10db504b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:17, skipping insertion in model container [2022-12-13 11:16:17,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:16:17" (1/1) ... [2022-12-13 11:16:17,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:16:17,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:16:17,903 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_773a7ad9-0039-4fc6-8659-12f81575cbf5/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2022-12-13 11:16:17,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:16:17,921 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:16:17,929 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_773a7ad9-0039-4fc6-8659-12f81575cbf5/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2022-12-13 11:16:17,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:16:17,941 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:16:17,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:17 WrapperNode [2022-12-13 11:16:17,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:16:17,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:16:17,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:16:17,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:16:17,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:17" (1/1) ... [2022-12-13 11:16:17,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:17" (1/1) ... [2022-12-13 11:16:17,964 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2022-12-13 11:16:17,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:16:17,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:16:17,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:16:17,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:16:17,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:17" (1/1) ... [2022-12-13 11:16:17,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:17" (1/1) ... [2022-12-13 11:16:17,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:17" (1/1) ... [2022-12-13 11:16:17,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:17" (1/1) ... [2022-12-13 11:16:17,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:17" (1/1) ... [2022-12-13 11:16:17,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:17" (1/1) ... [2022-12-13 11:16:17,979 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:17" (1/1) ... [2022-12-13 11:16:17,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:17" (1/1) ... [2022-12-13 11:16:17,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:16:17,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:16:17,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:16:17,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:16:17,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:17" (1/1) ... [2022-12-13 11:16:17,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:16:17,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:16:18,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:16:18,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:16:18,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:16:18,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:16:18,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:16:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:16:18,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 11:16:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 11:16:18,102 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:16:18,104 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:16:18,189 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:16:18,194 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:16:18,194 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 11:16:18,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:16:18 BoogieIcfgContainer [2022-12-13 11:16:18,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:16:18,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:16:18,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:16:18,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:16:18,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:16:17" (1/3) ... [2022-12-13 11:16:18,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca02773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:16:18, skipping insertion in model container [2022-12-13 11:16:18,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:17" (2/3) ... [2022-12-13 11:16:18,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca02773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:16:18, skipping insertion in model container [2022-12-13 11:16:18,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:16:18" (3/3) ... [2022-12-13 11:16:18,202 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound1.c [2022-12-13 11:16:18,217 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:16:18,217 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:16:18,255 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:16:18,260 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;@247316d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:16:18,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 11:16:18,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 11:16:18,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 11:16:18,270 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:16:18,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:16:18,271 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:16:18,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:16:18,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2022-12-13 11:16:18,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:16:18,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014643445] [2022-12-13 11:16:18,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:16:18,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:16:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:16:18,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:16:18,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:16:18,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014643445] [2022-12-13 11:16:18,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014643445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:16:18,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:16:18,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:16:18,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969502345] [2022-12-13 11:16:18,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:16:18,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:16:18,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:16:18,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:16:18,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:16:18,411 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) 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) [2022-12-13 11:16:18,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:16:18,425 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-12-13 11:16:18,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 11:16:18,427 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 [2022-12-13 11:16:18,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:16:18,432 INFO L225 Difference]: With dead ends: 32 [2022-12-13 11:16:18,432 INFO L226 Difference]: Without dead ends: 13 [2022-12-13 11:16:18,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:16:18,437 INFO L413 NwaCegarLoop]: 19 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, 19 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 [2022-12-13 11:16:18,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:16:18,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-12-13 11:16:18,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-12-13 11:16:18,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 11:16:18,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-12-13 11:16:18,464 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2022-12-13 11:16:18,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:16:18,465 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-12-13 11:16:18,465 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) [2022-12-13 11:16:18,465 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-12-13 11:16:18,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 11:16:18,465 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:16:18,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:16:18,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:16:18,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:16:18,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:16:18,467 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2022-12-13 11:16:18,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:16:18,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63093692] [2022-12-13 11:16:18,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:16:18,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:16:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:16:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:16:18,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:16:18,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63093692] [2022-12-13 11:16:18,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63093692] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:16:18,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:16:18,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:16:18,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347576473] [2022-12-13 11:16:18,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:16:18,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:16:18,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:16:18,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:16:18,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:16:18,547 INFO L87 Difference]: Start difference. First operand 13 states and 15 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) [2022-12-13 11:16:18,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:16:18,561 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-12-13 11:16:18,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:16:18,562 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 [2022-12-13 11:16:18,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:16:18,563 INFO L225 Difference]: With dead ends: 22 [2022-12-13 11:16:18,563 INFO L226 Difference]: Without dead ends: 15 [2022-12-13 11:16:18,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:16:18,565 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 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 [2022-12-13 11:16:18,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:16:18,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-13 11:16:18,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-13 11:16:18,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 11:16:18,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-13 11:16:18,569 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2022-12-13 11:16:18,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:16:18,570 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-13 11:16:18,570 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) [2022-12-13 11:16:18,570 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-12-13 11:16:18,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 11:16:18,570 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:16:18,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:16:18,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:16:18,571 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:16:18,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:16:18,571 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2022-12-13 11:16:18,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:16:18,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153495228] [2022-12-13 11:16:18,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:16:18,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:16:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:16:18,582 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:16:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:16:18,600 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:16:18,601 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:16:18,602 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 11:16:18,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:16:18,606 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 11:16:18,609 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 11:16:18,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 11:16:18 BoogieIcfgContainer [2022-12-13 11:16:18,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 11:16:18,622 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 11:16:18,622 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 11:16:18,623 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 11:16:18,623 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:16:18" (3/4) ... [2022-12-13 11:16:18,634 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 11:16:18,634 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 11:16:18,634 INFO L158 Benchmark]: Toolchain (without parser) took 876.74ms. Allocated memory is still 134.2MB. Free memory was 93.2MB in the beginning and 105.9MB in the end (delta: -12.7MB). Peak memory consumption was 59.7MB. Max. memory is 16.1GB. [2022-12-13 11:16:18,635 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 102.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:16:18,635 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.60ms. Allocated memory is still 134.2MB. Free memory was 93.2MB in the beginning and 82.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 11:16:18,636 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.46ms. Allocated memory is still 134.2MB. Free memory was 82.7MB in the beginning and 81.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:16:18,636 INFO L158 Benchmark]: Boogie Preprocessor took 15.01ms. Allocated memory is still 134.2MB. Free memory was 81.5MB in the beginning and 80.5MB in the end (delta: 981.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:16:18,637 INFO L158 Benchmark]: RCFGBuilder took 214.96ms. Allocated memory is still 134.2MB. Free memory was 80.4MB in the beginning and 71.1MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 11:16:18,638 INFO L158 Benchmark]: TraceAbstraction took 424.39ms. Allocated memory is still 134.2MB. Free memory was 70.1MB in the beginning and 40.7MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-12-13 11:16:18,638 INFO L158 Benchmark]: Witness Printer took 11.45ms. Allocated memory is still 134.2MB. Free memory was 40.7MB in the beginning and 105.9MB in the end (delta: -65.2MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2022-12-13 11:16:18,640 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 102.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.60ms. Allocated memory is still 134.2MB. Free memory was 93.2MB in the beginning and 82.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.46ms. Allocated memory is still 134.2MB. Free memory was 82.7MB in the beginning and 81.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.01ms. Allocated memory is still 134.2MB. Free memory was 81.5MB in the beginning and 80.5MB in the end (delta: 981.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 214.96ms. Allocated memory is still 134.2MB. Free memory was 80.4MB in the beginning and 71.1MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 424.39ms. Allocated memory is still 134.2MB. Free memory was 70.1MB in the beginning and 40.7MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 11.45ms. Allocated memory is still 134.2MB. Free memory was 40.7MB in the beginning and 105.9MB in the end (delta: -65.2MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0, r=0] [L32] EXPR counter++ VAL [counter=1, counter++=0, r=0] [L32] COND TRUE counter++<1 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0, counter=1] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 54 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 [2022-12-13 11:16:18,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/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_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8 --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 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec --- 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-2329fc7 [2022-12-13 11:16:20,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:16:20,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:16:20,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:16:20,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:16:20,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:16:20,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:16:20,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:16:20,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:16:20,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:16:20,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:16:20,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:16:20,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:16:20,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:16:20,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:16:20,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:16:20,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:16:20,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:16:20,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:16:20,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:16:20,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:16:20,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:16:20,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:16:20,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:16:20,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:16:20,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:16:20,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:16:20,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:16:20,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:16:20,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:16:20,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:16:20,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:16:20,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:16:20,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:16:20,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:16:20,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:16:20,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:16:20,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:16:20,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:16:20,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:16:20,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:16:20,479 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-12-13 11:16:20,494 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:16:20,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:16:20,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:16:20,495 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:16:20,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:16:20,495 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:16:20,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:16:20,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:16:20,496 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:16:20,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:16:20,496 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:16:20,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:16:20,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:16:20,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:16:20,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:16:20,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:16:20,497 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 11:16:20,497 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 11:16:20,497 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 11:16:20,497 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:16:20,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:16:20,497 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:16:20,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:16:20,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:16:20,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:16:20,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:16:20,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:16:20,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:16:20,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:16:20,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:16:20,498 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 11:16:20,498 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 11:16:20,498 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:16:20,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:16:20,499 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:16:20,499 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:16:20,499 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 11:16:20,499 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:16:20,499 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_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec [2022-12-13 11:16:20,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:16:20,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:16:20,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:16:20,754 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:16:20,754 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:16:20,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2022-12-13 11:16:23,373 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:16:23,508 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:16:23,508 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2022-12-13 11:16:23,513 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/data/fef317169/57fa60c31ad940f3bfe9f52856128176/FLAGf95361cc5 [2022-12-13 11:16:23,523 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/data/fef317169/57fa60c31ad940f3bfe9f52856128176 [2022-12-13 11:16:23,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:16:23,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:16:23,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:16:23,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:16:23,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:16:23,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:16:23" (1/1) ... [2022-12-13 11:16:23,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@166b140b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:23, skipping insertion in model container [2022-12-13 11:16:23,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:16:23" (1/1) ... [2022-12-13 11:16:23,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:16:23,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:16:23,648 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_773a7ad9-0039-4fc6-8659-12f81575cbf5/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2022-12-13 11:16:23,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:16:23,674 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:16:23,686 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_773a7ad9-0039-4fc6-8659-12f81575cbf5/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2022-12-13 11:16:23,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:16:23,704 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:16:23,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:23 WrapperNode [2022-12-13 11:16:23,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:16:23,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:16:23,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:16:23,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:16:23,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:23" (1/1) ... [2022-12-13 11:16:23,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:23" (1/1) ... [2022-12-13 11:16:23,737 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2022-12-13 11:16:23,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:16:23,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:16:23,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:16:23,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:16:23,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:23" (1/1) ... [2022-12-13 11:16:23,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:23" (1/1) ... [2022-12-13 11:16:23,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:23" (1/1) ... [2022-12-13 11:16:23,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:23" (1/1) ... [2022-12-13 11:16:23,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:23" (1/1) ... [2022-12-13 11:16:23,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:23" (1/1) ... [2022-12-13 11:16:23,760 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:23" (1/1) ... [2022-12-13 11:16:23,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:23" (1/1) ... [2022-12-13 11:16:23,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:16:23,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:16:23,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:16:23,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:16:23,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:23" (1/1) ... [2022-12-13 11:16:23,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:16:23,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:16:23,793 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:16:23,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:16:23,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:16:23,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 11:16:23,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:16:23,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:16:23,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 11:16:23,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 11:16:23,891 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:16:23,893 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:16:25,086 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:16:25,092 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:16:25,092 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 11:16:25,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:16:25 BoogieIcfgContainer [2022-12-13 11:16:25,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:16:25,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:16:25,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:16:25,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:16:25,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:16:23" (1/3) ... [2022-12-13 11:16:25,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101ae55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:16:25, skipping insertion in model container [2022-12-13 11:16:25,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:16:23" (2/3) ... [2022-12-13 11:16:25,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101ae55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:16:25, skipping insertion in model container [2022-12-13 11:16:25,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:16:25" (3/3) ... [2022-12-13 11:16:25,106 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound1.c [2022-12-13 11:16:25,119 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:16:25,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:16:25,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:16:25,155 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;@65aab4fa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:16:25,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 11:16:25,158 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 11:16:25,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 11:16:25,163 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:16:25,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:16:25,164 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:16:25,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:16:25,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2022-12-13 11:16:25,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:16:25,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695065727] [2022-12-13 11:16:25,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:16:25,177 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 [2022-12-13 11:16:25,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:16:25,178 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 11:16:25,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 11:16:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:16:25,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 11:16:25,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:16:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:16:25,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:16:25,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:16:25,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695065727] [2022-12-13 11:16:25,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695065727] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:16:25,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:16:25,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:16:25,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294550531] [2022-12-13 11:16:25,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:16:25,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:16:25,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:16:25,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:16:25,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:16:25,578 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) 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) [2022-12-13 11:16:25,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:16:25,591 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-12-13 11:16:25,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 11:16:25,592 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 [2022-12-13 11:16:25,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:16:25,597 INFO L225 Difference]: With dead ends: 32 [2022-12-13 11:16:25,597 INFO L226 Difference]: Without dead ends: 13 [2022-12-13 11:16:25,599 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 [2022-12-13 11:16:25,601 INFO L413 NwaCegarLoop]: 19 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, 19 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 [2022-12-13 11:16:25,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:16:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-12-13 11:16:25,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-12-13 11:16:25,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 11:16:25,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-12-13 11:16:25,624 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2022-12-13 11:16:25,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:16:25,624 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-12-13 11:16:25,624 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) [2022-12-13 11:16:25,624 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-12-13 11:16:25,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 11:16:25,624 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:16:25,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:16:25,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/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)] Forceful destruction successful, exit code 0 [2022-12-13 11:16:25,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 11:16:25,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:16:25,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:16:25,829 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2022-12-13 11:16:25,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:16:25,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706300573] [2022-12-13 11:16:25,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:16:25,832 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 [2022-12-13 11:16:25,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:16:25,835 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 11:16:25,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 11:16:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:16:26,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:16:26,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:16:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:16:26,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:16:26,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:16:26,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706300573] [2022-12-13 11:16:26,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706300573] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:16:26,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:16:26,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:16:26,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868702325] [2022-12-13 11:16:26,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:16:26,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:16:26,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:16:26,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:16:26,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:16:26,268 INFO L87 Difference]: Start difference. First operand 13 states and 15 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) [2022-12-13 11:16:26,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:16:26,967 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-12-13 11:16:26,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:16:26,968 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 [2022-12-13 11:16:26,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:16:26,968 INFO L225 Difference]: With dead ends: 22 [2022-12-13 11:16:26,968 INFO L226 Difference]: Without dead ends: 15 [2022-12-13 11:16:26,969 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 [2022-12-13 11:16:26,969 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:16:26,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 11:16:26,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-13 11:16:26,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-13 11:16:26,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 11:16:26,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-13 11:16:26,973 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2022-12-13 11:16:26,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:16:26,973 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-13 11:16:26,973 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) [2022-12-13 11:16:26,973 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-12-13 11:16:26,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 11:16:26,973 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:16:26,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:16:26,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 11:16:27,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 11:16:27,176 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:16:27,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:16:27,178 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2022-12-13 11:16:27,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:16:27,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533660781] [2022-12-13 11:16:27,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:16:27,180 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 [2022-12-13 11:16:27,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:16:27,182 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 11:16:27,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 11:16:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:16:27,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:16:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:16:27,864 ERROR L245 FreeRefinementEngine]: Caught known exception: Invalid model [2022-12-13 11:16:27,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [822663061] [2022-12-13 11:16:27,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:16:27,865 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 11:16:27,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 11:16:27,866 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 11:16:27,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773a7ad9-0039-4fc6-8659-12f81575cbf5/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-12-13 11:16:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:16:28,442 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:16:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat