./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R --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 4fec5b098aa2c60671d1780ba812b42b15ac9ae3aabb25670634981b4519504b --- 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-38b53e6 [2022-11-25 17:23:16,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:23:16,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:23:16,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:23:16,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:23:16,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:23:16,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:23:16,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:23:16,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:23:16,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:23:16,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:23:16,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:23:16,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:23:16,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:23:16,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:23:16,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:23:16,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:23:16,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:23:16,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:23:16,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:23:16,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:23:16,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:23:16,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:23:16,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:23:16,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:23:16,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:23:16,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:23:16,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:23:16,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:23:16,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:23:16,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:23:16,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:23:16,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:23:16,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:23:16,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:23:16,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:23:16,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:23:16,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:23:16,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:23:16,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:23:16,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:23:16,793 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:23:16,839 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:23:16,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:23:16,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:23:16,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:23:16,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:23:16,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:23:16,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:23:16,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:23:16,843 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:23:16,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:23:16,843 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:23:16,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:23:16,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:23:16,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:23:16,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:23:16,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:23:16,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:23:16,845 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:23:16,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:23:16,845 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:23:16,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:23:16,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:23:16,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:23:16,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:23:16,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:23:16,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:23:16,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:23:16,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:23:16,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:23:16,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:23:16,848 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:23:16,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:23:16,849 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:23:16,849 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:23:16,849 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_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fec5b098aa2c60671d1780ba812b42b15ac9ae3aabb25670634981b4519504b [2022-11-25 17:23:17,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:23:17,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:23:17,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:23:17,243 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:23:17,244 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:23:17,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c [2022-11-25 17:23:20,336 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:23:20,510 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:23:20,511 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c [2022-11-25 17:23:20,516 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/data/d98c48c3c/0f9b4050a1a6400185fa098ff13a37f0/FLAG92ffed5e9 [2022-11-25 17:23:20,530 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/data/d98c48c3c/0f9b4050a1a6400185fa098ff13a37f0 [2022-11-25 17:23:20,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:23:20,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:23:20,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:23:20,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:23:20,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:23:20,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:23:20" (1/1) ... [2022-11-25 17:23:20,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44dfc86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:20, skipping insertion in model container [2022-11-25 17:23:20,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:23:20" (1/1) ... [2022-11-25 17:23:20,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:23:20,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:23:20,711 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_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c[709,722] [2022-11-25 17:23:20,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:23:20,740 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:23:20,753 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_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c[709,722] [2022-11-25 17:23:20,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:23:20,775 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:23:20,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:20 WrapperNode [2022-11-25 17:23:20,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:23:20,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:23:20,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:23:20,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:23:20,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:20" (1/1) ... [2022-11-25 17:23:20,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:20" (1/1) ... [2022-11-25 17:23:20,809 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2022-11-25 17:23:20,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:23:20,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:23:20,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:23:20,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:23:20,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:20" (1/1) ... [2022-11-25 17:23:20,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:20" (1/1) ... [2022-11-25 17:23:20,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:20" (1/1) ... [2022-11-25 17:23:20,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:20" (1/1) ... [2022-11-25 17:23:20,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:20" (1/1) ... [2022-11-25 17:23:20,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:20" (1/1) ... [2022-11-25 17:23:20,830 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:20" (1/1) ... [2022-11-25 17:23:20,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:20" (1/1) ... [2022-11-25 17:23:20,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:23:20,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:23:20,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:23:20,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:23:20,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:20" (1/1) ... [2022-11-25 17:23:20,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:23:20,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:23:20,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:23:20,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:23:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:23:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:23:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:23:20,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:23:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 17:23:20,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 17:23:20,989 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:23:20,992 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:23:21,195 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:23:21,200 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:23:21,201 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:23:21,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:23:21 BoogieIcfgContainer [2022-11-25 17:23:21,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:23:21,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:23:21,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:23:21,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:23:21,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:23:20" (1/3) ... [2022-11-25 17:23:21,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46adb8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:23:21, skipping insertion in model container [2022-11-25 17:23:21,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:20" (2/3) ... [2022-11-25 17:23:21,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46adb8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:23:21, skipping insertion in model container [2022-11-25 17:23:21,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:23:21" (3/3) ... [2022-11-25 17:23:21,212 INFO L112 eAbstractionObserver]: Analyzing ICFG freire2_valuebound100.c [2022-11-25 17:23:21,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:23:21,232 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:23:21,281 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:23:21,287 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;@74604993, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:23:21,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:23:21,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 17:23:21,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 17:23:21,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:23:21,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:23:21,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:23:21,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:21,306 INFO L85 PathProgramCache]: Analyzing trace with hash -589224774, now seen corresponding path program 1 times [2022-11-25 17:23:21,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:21,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472965800] [2022-11-25 17:23:21,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:21,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:21,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:21,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472965800] [2022-11-25 17:23:21,451 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 17:23:21,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319439515] [2022-11-25 17:23:21,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:21,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:23:21,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:23:21,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:23:21,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:23:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:21,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 17:23:21,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:23:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:23:21,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:23:21,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319439515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:21,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:21,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:21,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173204230] [2022-11-25 17:23:21,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:21,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:23:21,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:21,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:23:21,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:23:21,621 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:21,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:23:21,644 INFO L93 Difference]: Finished difference Result 41 states and 64 transitions. [2022-11-25 17:23:21,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:23:21,646 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 17:23:21,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:23:21,655 INFO L225 Difference]: With dead ends: 41 [2022-11-25 17:23:21,663 INFO L226 Difference]: Without dead ends: 18 [2022-11-25 17:23:21,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:23:21,675 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:23:21,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:23:21,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-25 17:23:21,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-25 17:23:21,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 17:23:21,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-11-25 17:23:21,729 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2022-11-25 17:23:21,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:23:21,730 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-11-25 17:23:21,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:21,730 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-11-25 17:23:21,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 17:23:21,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:23:21,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:23:21,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 17:23:21,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 17:23:21,932 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:23:21,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:21,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1187450884, now seen corresponding path program 1 times [2022-11-25 17:23:21,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:21,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837773459] [2022-11-25 17:23:21,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:21,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:21,947 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:23:21,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [659600655] [2022-11-25 17:23:21,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:21,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:23:21,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:23:21,951 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:23:21,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:23:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:23:22,022 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:23:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:23:22,066 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:23:22,071 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:23:22,073 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 17:23:22,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:23:22,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:23:22,282 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 17:23:22,285 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:23:22,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:23:22 BoogieIcfgContainer [2022-11-25 17:23:22,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:23:22,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:23:22,309 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:23:22,309 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:23:22,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:23:21" (3/4) ... [2022-11-25 17:23:22,317 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 17:23:22,318 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:23:22,319 INFO L158 Benchmark]: Toolchain (without parser) took 1784.58ms. Allocated memory is still 176.2MB. Free memory was 136.0MB in the beginning and 80.6MB in the end (delta: 55.3MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2022-11-25 17:23:22,320 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 176.2MB. Free memory was 144.9MB in the beginning and 144.8MB in the end (delta: 94.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:23:22,320 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.61ms. Allocated memory is still 176.2MB. Free memory was 136.0MB in the beginning and 125.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 17:23:22,321 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.50ms. Allocated memory is still 176.2MB. Free memory was 125.1MB in the beginning and 123.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:23:22,321 INFO L158 Benchmark]: Boogie Preprocessor took 22.06ms. Allocated memory is still 176.2MB. Free memory was 123.8MB in the beginning and 122.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:23:22,322 INFO L158 Benchmark]: RCFGBuilder took 370.14ms. Allocated memory is still 176.2MB. Free memory was 122.2MB in the beginning and 111.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 17:23:22,323 INFO L158 Benchmark]: TraceAbstraction took 1102.64ms. Allocated memory is still 176.2MB. Free memory was 110.8MB in the beginning and 81.0MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-25 17:23:22,323 INFO L158 Benchmark]: Witness Printer took 9.77ms. Allocated memory is still 176.2MB. Free memory was 81.0MB in the beginning and 80.6MB in the end (delta: 394.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:23:22,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 176.2MB. Free memory was 144.9MB in the beginning and 144.8MB in the end (delta: 94.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.61ms. Allocated memory is still 176.2MB. Free memory was 136.0MB in the beginning and 125.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.50ms. Allocated memory is still 176.2MB. Free memory was 125.1MB in the beginning and 123.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.06ms. Allocated memory is still 176.2MB. Free memory was 123.8MB in the beginning and 122.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 370.14ms. Allocated memory is still 176.2MB. Free memory was 122.2MB in the beginning and 111.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1102.64ms. Allocated memory is still 176.2MB. Free memory was 110.8MB in the beginning and 81.0MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 9.77ms. Allocated memory is still 176.2MB. Free memory was 81.0MB in the beginning and 80.6MB in the end (delta: 394.0kB). There was no memory consumed. 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 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=100) [L14] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(a>=0 && a<=100) [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [a=2, r=1, s=13/4, x=2] [L33] COND TRUE 1 VAL [a=2, r=1, s=13/4, x=2] [L34] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, 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, 27 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 27 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 46 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 17:23:22,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R --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 4fec5b098aa2c60671d1780ba812b42b15ac9ae3aabb25670634981b4519504b --- 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-38b53e6 [2022-11-25 17:23:24,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:23:24,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:23:24,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:23:24,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:23:24,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:23:24,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:23:24,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:23:24,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:23:24,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:23:24,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:23:24,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:23:24,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:23:24,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:23:24,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:23:24,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:23:24,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:23:24,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:23:24,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:23:24,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:23:24,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:23:24,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:23:24,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:23:24,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:23:24,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:23:24,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:23:24,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:23:24,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:23:24,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:23:24,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:23:24,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:23:24,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:23:24,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:23:24,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:23:24,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:23:24,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:23:24,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:23:24,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:23:24,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:23:24,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:23:24,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:23:24,991 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-25 17:23:25,029 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:23:25,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:23:25,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:23:25,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:23:25,032 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:23:25,033 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:23:25,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:23:25,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:23:25,034 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:23:25,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:23:25,035 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:23:25,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:23:25,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:23:25,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:23:25,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:23:25,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:23:25,037 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:23:25,037 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 17:23:25,037 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 17:23:25,037 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:23:25,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:23:25,038 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:23:25,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:23:25,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:23:25,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:23:25,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:23:25,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:23:25,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:23:25,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:23:25,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:23:25,040 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 17:23:25,040 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 17:23:25,041 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:23:25,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:23:25,041 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:23:25,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:23:25,041 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 17:23:25,042 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_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fec5b098aa2c60671d1780ba812b42b15ac9ae3aabb25670634981b4519504b [2022-11-25 17:23:25,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:23:25,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:23:25,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:23:25,461 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:23:25,462 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:23:25,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c [2022-11-25 17:23:28,623 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:23:28,862 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:23:28,862 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c [2022-11-25 17:23:28,869 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/data/f71050c4d/5c2dc2d7d0c74f179391c6d74659a0af/FLAGac7b3d936 [2022-11-25 17:23:28,884 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/data/f71050c4d/5c2dc2d7d0c74f179391c6d74659a0af [2022-11-25 17:23:28,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:23:28,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:23:28,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:23:28,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:23:28,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:23:28,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:23:28" (1/1) ... [2022-11-25 17:23:28,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c92e7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:28, skipping insertion in model container [2022-11-25 17:23:28,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:23:28" (1/1) ... [2022-11-25 17:23:28,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:23:28,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:23:29,090 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_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c[709,722] [2022-11-25 17:23:29,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:23:29,136 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:23:29,150 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_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c[709,722] [2022-11-25 17:23:29,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:23:29,181 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:23:29,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29 WrapperNode [2022-11-25 17:23:29,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:23:29,183 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:23:29,183 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:23:29,183 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:23:29,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,199 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,219 INFO L138 Inliner]: procedures = 15, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2022-11-25 17:23:29,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:23:29,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:23:29,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:23:29,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:23:29,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,261 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:23:29,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:23:29,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:23:29,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:23:29,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (1/1) ... [2022-11-25 17:23:29,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:23:29,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:23:29,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:23:29,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:23:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:23:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 17:23:29,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:23:29,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:23:29,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 17:23:29,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 17:23:29,462 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:23:29,467 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:23:31,977 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:23:31,983 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:23:31,984 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:23:31,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:23:31 BoogieIcfgContainer [2022-11-25 17:23:31,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:23:31,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:23:31,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:23:31,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:23:31,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:23:28" (1/3) ... [2022-11-25 17:23:31,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f37e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:23:31, skipping insertion in model container [2022-11-25 17:23:31,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:29" (2/3) ... [2022-11-25 17:23:31,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f37e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:23:31, skipping insertion in model container [2022-11-25 17:23:31,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:23:31" (3/3) ... [2022-11-25 17:23:31,995 INFO L112 eAbstractionObserver]: Analyzing ICFG freire2_valuebound100.c [2022-11-25 17:23:32,014 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:23:32,014 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:23:32,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:23:32,105 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;@11ef70e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:23:32,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:23:32,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 17:23:32,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 17:23:32,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:23:32,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:23:32,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:23:32,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:32,151 INFO L85 PathProgramCache]: Analyzing trace with hash -589224774, now seen corresponding path program 1 times [2022-11-25 17:23:32,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:23:32,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151723904] [2022-11-25 17:23:32,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:32,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:23:32,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:23:32,195 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:23:32,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 17:23:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:32,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 17:23:32,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:23:32,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:23:32,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:23:32,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:23:32,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151723904] [2022-11-25 17:23:32,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151723904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:32,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:32,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:23:32,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797233990] [2022-11-25 17:23:32,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:32,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:23:32,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:23:32,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:23:32,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:23:32,419 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:32,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:23:32,444 INFO L93 Difference]: Finished difference Result 41 states and 64 transitions. [2022-11-25 17:23:32,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:23:32,446 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 17:23:32,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:23:32,454 INFO L225 Difference]: With dead ends: 41 [2022-11-25 17:23:32,454 INFO L226 Difference]: Without dead ends: 18 [2022-11-25 17:23:32,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:23:32,461 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:23:32,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:23:32,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-25 17:23:32,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-25 17:23:32,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 17:23:32,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-11-25 17:23:32,503 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2022-11-25 17:23:32,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:23:32,504 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-11-25 17:23:32,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:32,504 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-11-25 17:23:32,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 17:23:32,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:23:32,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:23:32,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 17:23:32,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:23:32,707 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:23:32,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:32,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1187450884, now seen corresponding path program 1 times [2022-11-25 17:23:32,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:23:32,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270714877] [2022-11-25 17:23:32,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:32,715 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:23:32,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:23:32,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:23:32,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 17:23:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:23:32,860 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:23:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:23:32,984 ERROR L245 FreeRefinementEngine]: Caught known exception: Invalid model [2022-11-25 17:23:32,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1891509138] [2022-11-25 17:23:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:32,985 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:23:32,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:23:33,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:23:33,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-25 17:23:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:33,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:23:33,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:23:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:23:33,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:23:33,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:23:33,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270714877] [2022-11-25 17:23:33,420 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:23:33,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1891509138] [2022-11-25 17:23:33,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1891509138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:23:33,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:23:33,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:23:33,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670592348] [2022-11-25 17:23:33,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:23:33,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:23:33,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:23:33,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:23:33,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:23:33,426 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:36,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:23:38,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:23:39,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:23:41,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:23:44,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:23:46,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:23:50,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:23:52,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:23:52,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:23:52,567 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-11-25 17:23:52,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:23:52,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 17:23:52,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:23:52,672 INFO L225 Difference]: With dead ends: 33 [2022-11-25 17:23:52,672 INFO L226 Difference]: Without dead ends: 31 [2022-11-25 17:23:52,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:23:52,674 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 13 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:23:52,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 70 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 7 Unknown, 0 Unchecked, 19.1s Time] [2022-11-25 17:23:52,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-25 17:23:52,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-11-25 17:23:52,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-25 17:23:52,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-25 17:23:52,686 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 9 [2022-11-25 17:23:52,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:23:52,687 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-25 17:23:52,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:23:52,687 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-11-25 17:23:52,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 17:23:52,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:23:52,688 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:23:52,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:23:52,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:23:53,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:23:53,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:23:53,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:53,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1170702338, now seen corresponding path program 1 times [2022-11-25 17:23:53,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:23:53,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357002274] [2022-11-25 17:23:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:53,093 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:23:53,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:23:53,094 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:23:53,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/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 (5)] Waiting until timeout for monitored process [2022-11-25 17:23:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:23:53,493 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:23:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:23:53,826 ERROR L245 FreeRefinementEngine]: Caught known exception: Invalid model [2022-11-25 17:23:53,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1425087493] [2022-11-25 17:23:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:53,826 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:23:53,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:23:53,828 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:23:53,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-25 17:23:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:54,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 17:23:54,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:23:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:23:56,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:24:04,168 WARN L859 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (bvneg (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv6 32) |c_ULTIMATE.start_main_~r~0#1|))) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~x~0#1|) (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|)))) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|))) is different from true [2022-11-25 17:24:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:24:39,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:24:39,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357002274] [2022-11-25 17:24:39,702 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:24:39,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1425087493] [2022-11-25 17:24:39,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1425087493] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:24:39,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:24:39,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2022-11-25 17:24:39,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145411819] [2022-11-25 17:24:39,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:39,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:24:39,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:24:39,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:24:39,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=100, Unknown=1, NotChecked=20, Total=156 [2022-11-25 17:24:39,706 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 17:24:43,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:24:45,312 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (let ((.cse0 (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~a~0#1|))) (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode .cse0 .cse0)) (_ bv0 32)) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (bvneg (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv6 32) |c_ULTIMATE.start_main_~r~0#1|))) ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~x~0#1|) .cse0)) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)))))) is different from false [2022-11-25 17:24:47,359 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (let ((.cse0 (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~a~0#1|))) (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode .cse0 .cse0)) (_ bv0 32)) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (bvneg (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv6 32) |c_ULTIMATE.start_main_~r~0#1|))) ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~x~0#1|) .cse0)) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)))))) is different from true [2022-11-25 17:24:53,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:24:55,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:24:57,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:24:59,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:25:03,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:25:05,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:25:07,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:25:09,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:25:12,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:25:14,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:25:14,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:25:14,155 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-11-25 17:25:14,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:25:14,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-25 17:25:14,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:25:14,337 INFO L225 Difference]: With dead ends: 31 [2022-11-25 17:25:14,337 INFO L226 Difference]: Without dead ends: 29 [2022-11-25 17:25:14,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=41, Invalid=120, Unknown=3, NotChecked=46, Total=210 [2022-11-25 17:25:14,339 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:25:14,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 66 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 10 Unknown, 35 Unchecked, 28.1s Time] [2022-11-25 17:25:14,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-25 17:25:14,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-25 17:25:14,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-25 17:25:14,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-11-25 17:25:14,350 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 14 [2022-11-25 17:25:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:25:14,351 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-11-25 17:25:14,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 17:25:14,351 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-11-25 17:25:14,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 17:25:14,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:25:14,352 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:25:14,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/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 (5)] Ended with exit code 0 [2022-11-25 17:25:14,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:25:14,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 17:25:14,781 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:25:14,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:25:14,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1035962748, now seen corresponding path program 1 times [2022-11-25 17:25:14,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:25:14,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296185775] [2022-11-25 17:25:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:25:14,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:25:14,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:25:14,785 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:25:14,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/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 (7)] Waiting until timeout for monitored process [2022-11-25 17:25:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:25:16,199 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:25:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:25:17,626 ERROR L245 FreeRefinementEngine]: Caught known exception: Invalid model [2022-11-25 17:25:17,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [247951965] [2022-11-25 17:25:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:25:17,626 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:25:17,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:25:17,634 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:25:17,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb7ac63-da61-410a-a5ec-7ef68b162bbd/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-25 17:26:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:26:22,460 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:27:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat