./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc --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 27e2c506f8c4790ab21ed41c19bd1ea2839907b43d1ff7cacbbc276ad919ab4e --- 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-5e519f3 [2022-11-02 20:12:05,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:12:05,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:12:05,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:12:05,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:12:05,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:12:05,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:12:05,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:12:05,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:12:05,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:12:05,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:12:05,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:12:05,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:12:05,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:12:05,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:12:05,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:12:05,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:12:05,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:12:05,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:12:05,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:12:05,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:12:05,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:12:05,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:12:05,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:12:05,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:12:05,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:12:05,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:12:05,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:12:05,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:12:05,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:12:05,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:12:05,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:12:05,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:12:05,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:12:05,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:12:05,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:12:05,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:12:05,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:12:05,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:12:05,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:12:05,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:12:05,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:12:05,808 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:12:05,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:12:05,809 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:12:05,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:12:05,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:12:05,810 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:12:05,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:12:05,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:12:05,811 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:12:05,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:12:05,811 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:12:05,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:12:05,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:12:05,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:12:05,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:12:05,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:12:05,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:12:05,813 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:12:05,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:12:05,813 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:12:05,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:12:05,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:12:05,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:12:05,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:12:05,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:12:05,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:12:05,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:12:05,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:12:05,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:12:05,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:12:05,820 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:12:05,821 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:12:05,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:12:05,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27e2c506f8c4790ab21ed41c19bd1ea2839907b43d1ff7cacbbc276ad919ab4e [2022-11-02 20:12:06,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:12:06,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:12:06,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:12:06,139 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:12:06,140 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:12:06,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c [2022-11-02 20:12:06,222 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/data/540bddab1/637f913bfec54d04acfa816c424c859f/FLAG8d90d0a34 [2022-11-02 20:12:06,805 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:12:06,806 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c [2022-11-02 20:12:06,813 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/data/540bddab1/637f913bfec54d04acfa816c424c859f/FLAG8d90d0a34 [2022-11-02 20:12:07,187 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/data/540bddab1/637f913bfec54d04acfa816c424c859f [2022-11-02 20:12:07,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:12:07,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:12:07,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:12:07,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:12:07,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:12:07,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:12:07" (1/1) ... [2022-11-02 20:12:07,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52f76373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:07, skipping insertion in model container [2022-11-02 20:12:07,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:12:07" (1/1) ... [2022-11-02 20:12:07,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:12:07,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:12:07,450 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[1355,1368] [2022-11-02 20:12:07,472 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[2394,2407] [2022-11-02 20:12:07,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:12:07,492 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:12:07,524 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[1355,1368] [2022-11-02 20:12:07,535 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[2394,2407] [2022-11-02 20:12:07,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:12:07,564 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:12:07,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:07 WrapperNode [2022-11-02 20:12:07,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:12:07,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:12:07,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:12:07,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:12:07,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:07" (1/1) ... [2022-11-02 20:12:07,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:07" (1/1) ... [2022-11-02 20:12:07,616 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 122 [2022-11-02 20:12:07,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:12:07,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:12:07,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:12:07,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:12:07,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:07" (1/1) ... [2022-11-02 20:12:07,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:07" (1/1) ... [2022-11-02 20:12:07,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:07" (1/1) ... [2022-11-02 20:12:07,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:07" (1/1) ... [2022-11-02 20:12:07,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:07" (1/1) ... [2022-11-02 20:12:07,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:07" (1/1) ... [2022-11-02 20:12:07,666 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:07" (1/1) ... [2022-11-02 20:12:07,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:07" (1/1) ... [2022-11-02 20:12:07,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:12:07,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:12:07,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:12:07,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:12:07,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:07" (1/1) ... [2022-11-02 20:12:07,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:12:07,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:12:07,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:12:07,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:12:07,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:12:07,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:12:07,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:12:07,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:12:07,827 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:12:07,830 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:12:08,107 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:12:08,113 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:12:08,113 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:12:08,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:12:08 BoogieIcfgContainer [2022-11-02 20:12:08,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:12:08,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:12:08,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:12:08,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:12:08,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:12:07" (1/3) ... [2022-11-02 20:12:08,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2edbb61d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:12:08, skipping insertion in model container [2022-11-02 20:12:08,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:07" (2/3) ... [2022-11-02 20:12:08,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2edbb61d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:12:08, skipping insertion in model container [2022-11-02 20:12:08,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:12:08" (3/3) ... [2022-11-02 20:12:08,125 INFO L112 eAbstractionObserver]: Analyzing ICFG filter1.c.v+lhb-reducer.c [2022-11-02 20:12:08,144 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:12:08,144 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:12:08,193 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:12:08,199 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;@68a943b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:12:08,200 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:12:08,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 30 states have (on average 1.6) internal successors, (48), 32 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:08,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:12:08,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:12:08,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:08,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:12:08,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:08,228 INFO L85 PathProgramCache]: Analyzing trace with hash 775758574, now seen corresponding path program 1 times [2022-11-02 20:12:08,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:08,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208106599] [2022-11-02 20:12:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:08,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:08,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:08,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208106599] [2022-11-02 20:12:08,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208106599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:08,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:08,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:12:08,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576610100] [2022-11-02 20:12:08,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:08,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:12:08,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:08,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:12:08,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:12:08,620 INFO L87 Difference]: Start difference. First operand has 33 states, 30 states have (on average 1.6) internal successors, (48), 32 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:12:08,751 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2022-11-02 20:12:08,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:12:08,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:12:08,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:12:08,763 INFO L225 Difference]: With dead ends: 45 [2022-11-02 20:12:08,764 INFO L226 Difference]: Without dead ends: 34 [2022-11-02 20:12:08,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:12:08,777 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 44 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:12:08,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 131 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:12:08,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-02 20:12:08,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-11-02 20:12:08,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-11-02 20:12:08,830 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 13 [2022-11-02 20:12:08,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:12:08,831 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-11-02 20:12:08,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:08,832 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-11-02 20:12:08,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:12:08,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:12:08,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:08,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:12:08,834 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:12:08,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:08,836 INFO L85 PathProgramCache]: Analyzing trace with hash 843294771, now seen corresponding path program 1 times [2022-11-02 20:12:08,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:08,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86334546] [2022-11-02 20:12:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:08,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:12:08,862 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:12:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:12:08,891 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:12:08,891 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:12:08,893 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-02 20:12:08,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-02 20:12:08,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:12:08,900 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-02 20:12:08,904 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:12:08,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:12:08 BoogieIcfgContainer [2022-11-02 20:12:08,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:12:08,935 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:12:08,935 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:12:08,936 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:12:08,936 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:12:08" (3/4) ... [2022-11-02 20:12:08,939 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:12:08,940 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:12:08,941 INFO L158 Benchmark]: Toolchain (without parser) took 1747.73ms. Allocated memory is still 107.0MB. Free memory was 74.1MB in the beginning and 67.8MB in the end (delta: 6.3MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2022-11-02 20:12:08,941 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 81.8MB. Free memory was 36.7MB in the beginning and 36.7MB in the end (delta: 40.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:12:08,942 INFO L158 Benchmark]: CACSL2BoogieTranslator took 376.44ms. Allocated memory is still 107.0MB. Free memory was 74.1MB in the beginning and 81.5MB in the end (delta: -7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:12:08,942 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.55ms. Allocated memory is still 107.0MB. Free memory was 81.5MB in the beginning and 79.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:12:08,943 INFO L158 Benchmark]: Boogie Preprocessor took 50.61ms. Allocated memory is still 107.0MB. Free memory was 79.7MB in the beginning and 78.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:12:08,944 INFO L158 Benchmark]: RCFGBuilder took 446.22ms. Allocated memory is still 107.0MB. Free memory was 78.4MB in the beginning and 67.1MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:12:08,944 INFO L158 Benchmark]: TraceAbstraction took 816.77ms. Allocated memory is still 107.0MB. Free memory was 66.5MB in the beginning and 68.4MB in the end (delta: -1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:12:08,945 INFO L158 Benchmark]: Witness Printer took 4.64ms. Allocated memory is still 107.0MB. Free memory was 68.3MB in the beginning and 67.8MB in the end (delta: 506.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:12:08,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 81.8MB. Free memory was 36.7MB in the beginning and 36.7MB in the end (delta: 40.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 376.44ms. Allocated memory is still 107.0MB. Free memory was 74.1MB in the beginning and 81.5MB in the end (delta: -7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.55ms. Allocated memory is still 107.0MB. Free memory was 81.5MB in the beginning and 79.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.61ms. Allocated memory is still 107.0MB. Free memory was 79.7MB in the beginning and 78.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 446.22ms. Allocated memory is still 107.0MB. Free memory was 78.4MB in the beginning and 67.1MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 816.77ms. Allocated memory is still 107.0MB. Free memory was 66.5MB in the beginning and 68.4MB in the end (delta: -1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.64ms. Allocated memory is still 107.0MB. Free memory was 68.3MB in the beginning and 67.8MB in the end (delta: 506.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 58]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 45, overapproximation of to_real at line 41. Possible FailurePath: [L1] int __return_main; [L13] int __tmp_129_0; [L14] int __tmp_129_1; [L15] int __tmp_129_2; [L16] int __return_134; VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L19] double main__E0; [L20] double main__E1; [L21] double main__S; [L22] int main__i; [L23] main__E1 = 0 [L24] main__S = 0 [L25] main__i = 0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main__i=0] [L26] COND TRUE main__i <= 1000000 [L28] main__E0 = __VERIFIER_nondet_double() [L29] int main____CPAchecker_TMP_0; VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main__E0=53, main__i=0] [L30] COND TRUE main__E0 >= -1.0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main__E0=53, main__i=0] [L32] COND TRUE main__E0 <= 1.0 [L34] main____CPAchecker_TMP_0 = 1 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main____CPAchecker_TMP_0=1, main__E0=53, main__i=0] [L35] COND TRUE main____CPAchecker_TMP_0 != 0 [L37] int main____CPAchecker_TMP_1; [L38] main____CPAchecker_TMP_1 = __VERIFIER_nondet_int() [L39] COND TRUE !(main____CPAchecker_TMP_1 == 0) [L41] main__S = 0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__E0=53, main__i=0] [L43] main__E1 = main__E0 [L44] int main____CPAchecker_TMP_2; VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__E0=53, main__E1=53, main__i=0] [L45] COND FALSE !(main__S >= -10000.0) VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__E0=53, main__E1=53, main__i=0] [L162] main____CPAchecker_TMP_2 = 0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__E0=53, main__E1=53, main__i=0] [L52] int __tmp_1; [L53] __tmp_1 = main____CPAchecker_TMP_2 [L54] int __VERIFIER_assert__cond; [L55] __VERIFIER_assert__cond = __tmp_1 VAL [__return_134=0, __return_main=0, __tmp_1=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__E0=53, main__E1=53, main__i=0] [L56] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_134=0, __return_main=0, __tmp_1=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__E0=53, main__E1=53, main__i=0] [L58] reach_error() VAL [__return_134=0, __return_main=0, __tmp_1=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__E0=53, main__E1=53, main__i=0] - UnprovableResult [Line: 104]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 131 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 87 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 44 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 [2022-11-02 20:12:08,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc --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 27e2c506f8c4790ab21ed41c19bd1ea2839907b43d1ff7cacbbc276ad919ab4e --- 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-5e519f3 [2022-11-02 20:12:11,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:12:11,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:12:11,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:12:11,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:12:11,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:12:11,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:12:11,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:12:11,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:12:11,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:12:11,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:12:11,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:12:11,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:12:11,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:12:11,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:12:11,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:12:11,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:12:11,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:12:11,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:12:11,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:12:11,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:12:11,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:12:11,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:12:11,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:12:11,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:12:11,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:12:11,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:12:11,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:12:11,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:12:11,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:12:11,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:12:11,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:12:11,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:12:11,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:12:11,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:12:11,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:12:11,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:12:11,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:12:11,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:12:11,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:12:11,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:12:11,522 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-02 20:12:11,572 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:12:11,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:12:11,573 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:12:11,574 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:12:11,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:12:11,575 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:12:11,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:12:11,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:12:11,577 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:12:11,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:12:11,578 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:12:11,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:12:11,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:12:11,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:12:11,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:12:11,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:12:11,579 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:12:11,580 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:12:11,580 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:12:11,580 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:12:11,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:12:11,580 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:12:11,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:12:11,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:12:11,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:12:11,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:12:11,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:12:11,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:12:11,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:12:11,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:12:11,582 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:12:11,583 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:12:11,583 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:12:11,583 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:12:11,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:12:11,584 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:12:11,584 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27e2c506f8c4790ab21ed41c19bd1ea2839907b43d1ff7cacbbc276ad919ab4e [2022-11-02 20:12:11,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:12:11,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:12:11,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:12:11,995 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:12:11,996 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:12:11,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c [2022-11-02 20:12:12,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/data/0f9f6665d/1745c5f0072746f2980d1b5b963f0351/FLAGca5325d8f [2022-11-02 20:12:12,534 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:12:12,535 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c [2022-11-02 20:12:12,544 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/data/0f9f6665d/1745c5f0072746f2980d1b5b963f0351/FLAGca5325d8f [2022-11-02 20:12:12,904 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/data/0f9f6665d/1745c5f0072746f2980d1b5b963f0351 [2022-11-02 20:12:12,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:12:12,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:12:12,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:12:12,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:12:12,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:12:12,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:12:12" (1/1) ... [2022-11-02 20:12:12,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e531dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:12, skipping insertion in model container [2022-11-02 20:12:12,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:12:12" (1/1) ... [2022-11-02 20:12:12,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:12:12,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:12:13,182 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[1355,1368] [2022-11-02 20:12:13,213 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[2394,2407] [2022-11-02 20:12:13,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:12:13,265 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:12:13,291 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[1355,1368] [2022-11-02 20:12:13,295 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[2394,2407] [2022-11-02 20:12:13,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:12:13,312 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:12:13,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:13 WrapperNode [2022-11-02 20:12:13,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:12:13,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:12:13,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:12:13,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:12:13,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:13" (1/1) ... [2022-11-02 20:12:13,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:13" (1/1) ... [2022-11-02 20:12:13,365 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 121 [2022-11-02 20:12:13,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:12:13,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:12:13,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:12:13,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:12:13,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:13" (1/1) ... [2022-11-02 20:12:13,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:13" (1/1) ... [2022-11-02 20:12:13,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:13" (1/1) ... [2022-11-02 20:12:13,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:13" (1/1) ... [2022-11-02 20:12:13,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:13" (1/1) ... [2022-11-02 20:12:13,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:13" (1/1) ... [2022-11-02 20:12:13,418 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:13" (1/1) ... [2022-11-02 20:12:13,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:13" (1/1) ... [2022-11-02 20:12:13,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:12:13,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:12:13,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:12:13,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:12:13,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:13" (1/1) ... [2022-11-02 20:12:13,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:12:13,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:12:13,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:12:13,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:12:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:12:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 20:12:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:12:13,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:12:13,597 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:12:13,599 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:12:18,047 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:12:18,056 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:12:18,056 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:12:18,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:12:18 BoogieIcfgContainer [2022-11-02 20:12:18,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:12:18,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:12:18,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:12:18,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:12:18,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:12:12" (1/3) ... [2022-11-02 20:12:18,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aefc944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:12:18, skipping insertion in model container [2022-11-02 20:12:18,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:13" (2/3) ... [2022-11-02 20:12:18,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aefc944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:12:18, skipping insertion in model container [2022-11-02 20:12:18,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:12:18" (3/3) ... [2022-11-02 20:12:18,077 INFO L112 eAbstractionObserver]: Analyzing ICFG filter1.c.v+lhb-reducer.c [2022-11-02 20:12:18,100 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:12:18,101 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:12:18,180 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:12:18,192 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;@e829396, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:12:18,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:12:18,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 30 states have (on average 1.6) internal successors, (48), 32 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:18,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:12:18,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:12:18,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:18,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:12:18,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:18,225 INFO L85 PathProgramCache]: Analyzing trace with hash 775758574, now seen corresponding path program 1 times [2022-11-02 20:12:18,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:12:18,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918906430] [2022-11-02 20:12:18,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:18,246 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:12:18,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:12:18,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:12:18,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:12:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:18,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:12:18,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:18,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:12:18,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:12:18,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918906430] [2022-11-02 20:12:18,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918906430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:18,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:18,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:12:18,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704043543] [2022-11-02 20:12:18,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:18,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:12:18,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:12:18,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:12:18,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:12:18,526 INFO L87 Difference]: Start difference. First operand has 33 states, 30 states have (on average 1.6) internal successors, (48), 32 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:18,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:12:18,668 INFO L93 Difference]: Finished difference Result 59 states and 81 transitions. [2022-11-02 20:12:18,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:12:18,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:12:18,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:12:18,681 INFO L225 Difference]: With dead ends: 59 [2022-11-02 20:12:18,682 INFO L226 Difference]: Without dead ends: 48 [2022-11-02 20:12:18,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:12:18,689 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 28 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:12:18,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 129 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:12:18,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-02 20:12:18,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2022-11-02 20:12:18,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:18,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-11-02 20:12:18,729 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 13 [2022-11-02 20:12:18,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:12:18,730 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-11-02 20:12:18,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:18,731 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-11-02 20:12:18,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:12:18,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:12:18,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:18,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-02 20:12:18,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:12:18,943 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:12:18,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:18,944 INFO L85 PathProgramCache]: Analyzing trace with hash 843294771, now seen corresponding path program 1 times [2022-11-02 20:12:18,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:12:18,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012651212] [2022-11-02 20:12:18,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:18,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:12:18,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:12:18,947 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:12:18,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:12:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:19,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:12:19,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:19,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:19,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:12:19,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:12:19,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012651212] [2022-11-02 20:12:19,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012651212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:19,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:19,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:12:19,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536817696] [2022-11-02 20:12:19,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:19,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:12:19,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:12:19,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:12:19,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:12:19,094 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:20,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:12:20,756 INFO L93 Difference]: Finished difference Result 71 states and 91 transitions. [2022-11-02 20:12:20,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:12:20,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:12:20,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:12:20,760 INFO L225 Difference]: With dead ends: 71 [2022-11-02 20:12:20,760 INFO L226 Difference]: Without dead ends: 51 [2022-11-02 20:12:20,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:12:20,762 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 23 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:12:20,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 40 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:12:20,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-02 20:12:20,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2022-11-02 20:12:20,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 37 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:20,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-11-02 20:12:20,783 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 13 [2022-11-02 20:12:20,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:12:20,784 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-11-02 20:12:20,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:20,785 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-11-02 20:12:20,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:12:20,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:12:20,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:20,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:20,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:12:20,992 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:12:20,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:20,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1349105153, now seen corresponding path program 1 times [2022-11-02 20:12:20,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:12:20,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212601268] [2022-11-02 20:12:20,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:20,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:12:20,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:12:20,997 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:12:21,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:12:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:21,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:12:21,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:22,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:12:22,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:12:22,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212601268] [2022-11-02 20:12:22,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212601268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:22,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:22,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:12:22,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482615464] [2022-11-02 20:12:22,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:22,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:12:22,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:12:22,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:12:22,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:12:22,362 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:25,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:12:27,229 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 [] [2022-11-02 20:12:27,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:12:27,368 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2022-11-02 20:12:27,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:12:27,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:12:27,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:12:27,371 INFO L225 Difference]: With dead ends: 61 [2022-11-02 20:12:27,371 INFO L226 Difference]: Without dead ends: 38 [2022-11-02 20:12:27,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:12:27,373 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:12:27,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 73 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 2 Unknown, 15 Unchecked, 5.0s Time] [2022-11-02 20:12:27,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-02 20:12:27,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-02 20:12:27,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:27,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2022-11-02 20:12:27,389 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 13 [2022-11-02 20:12:27,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:12:27,390 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2022-11-02 20:12:27,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:27,391 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2022-11-02 20:12:27,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:12:27,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:12:27,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:27,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:27,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:12:27,606 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:12:27,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:27,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1134941057, now seen corresponding path program 1 times [2022-11-02 20:12:27,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:12:27,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907330527] [2022-11-02 20:12:27,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:27,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:12:27,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:12:27,613 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:12:27,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:12:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:28,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:12:28,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:29,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:29,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:12:29,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:12:29,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907330527] [2022-11-02 20:12:29,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907330527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:29,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:29,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:12:29,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182774310] [2022-11-02 20:12:29,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:29,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:12:29,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:12:29,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:12:29,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:12:29,049 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:29,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:12:29,587 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2022-11-02 20:12:29,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:12:29,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-02 20:12:29,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:12:29,637 INFO L225 Difference]: With dead ends: 56 [2022-11-02 20:12:29,637 INFO L226 Difference]: Without dead ends: 33 [2022-11-02 20:12:29,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:12:29,639 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 8 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:12:29,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 55 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 20 Unchecked, 0.5s Time] [2022-11-02 20:12:29,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-02 20:12:29,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2022-11-02 20:12:29,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:29,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-11-02 20:12:29,646 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2022-11-02 20:12:29,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:12:29,646 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-11-02 20:12:29,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:29,647 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-11-02 20:12:29,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-02 20:12:29,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:12:29,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:29,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:29,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:12:29,859 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:12:29,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:29,859 INFO L85 PathProgramCache]: Analyzing trace with hash -151896705, now seen corresponding path program 1 times [2022-11-02 20:12:29,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:12:29,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547207801] [2022-11-02 20:12:29,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:29,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:12:29,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:12:29,869 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:12:29,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:12:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:29,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:12:29,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:29,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:29,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:12:29,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:12:29,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547207801] [2022-11-02 20:12:29,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547207801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:29,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:29,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:12:29,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888647478] [2022-11-02 20:12:29,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:29,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:12:29,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:12:29,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:12:29,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:12:29,991 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:30,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:12:30,035 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2022-11-02 20:12:30,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:12:30,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-02 20:12:30,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:12:30,038 INFO L225 Difference]: With dead ends: 49 [2022-11-02 20:12:30,038 INFO L226 Difference]: Without dead ends: 29 [2022-11-02 20:12:30,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:12:30,039 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:12:30,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:12:30,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-02 20:12:30,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-02 20:12:30,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:30,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-11-02 20:12:30,054 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2022-11-02 20:12:30,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:12:30,055 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-11-02 20:12:30,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:30,056 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-11-02 20:12:30,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-02 20:12:30,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:12:30,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:30,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:30,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:12:30,263 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:12:30,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash -327957724, now seen corresponding path program 1 times [2022-11-02 20:12:30,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:12:30,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426800419] [2022-11-02 20:12:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:30,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:12:30,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:12:30,266 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:12:30,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:12:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:30,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:12:30,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:30,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:12:30,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:12:30,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426800419] [2022-11-02 20:12:30,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426800419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:30,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:30,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:12:30,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370273846] [2022-11-02 20:12:30,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:30,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:12:30,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:12:30,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:12:30,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:12:30,393 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:30,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:12:30,511 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2022-11-02 20:12:30,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:12:30,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-02 20:12:30,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:12:30,513 INFO L225 Difference]: With dead ends: 48 [2022-11-02 20:12:30,513 INFO L226 Difference]: Without dead ends: 46 [2022-11-02 20:12:30,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:12:30,514 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 23 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:12:30,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 94 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:12:30,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-02 20:12:30,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2022-11-02 20:12:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:30,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-11-02 20:12:30,522 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 24 [2022-11-02 20:12:30,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:12:30,523 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-11-02 20:12:30,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:30,524 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-11-02 20:12:30,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-02 20:12:30,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:12:30,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:30,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:30,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:12:30,741 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:12:30,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:30,742 INFO L85 PathProgramCache]: Analyzing trace with hash 401808482, now seen corresponding path program 1 times [2022-11-02 20:12:30,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:12:30,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406257174] [2022-11-02 20:12:30,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:30,743 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:12:30,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:12:30,744 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:12:30,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:12:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:31,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:12:31,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:52,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:52,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:12:52,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:12:52,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406257174] [2022-11-02 20:12:52,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406257174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:52,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:52,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:12:52,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769335110] [2022-11-02 20:12:52,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:52,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:12:52,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:12:52,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:12:52,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=49, Unknown=3, NotChecked=0, Total=90 [2022-11-02 20:12:52,591 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:54,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:13:02,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:13:04,643 WARN L539 Checker$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 [] [2022-11-02 20:13:04,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:04,755 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2022-11-02 20:13:04,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:13:04,756 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-02 20:13:04,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:04,757 INFO L225 Difference]: With dead ends: 68 [2022-11-02 20:13:04,757 INFO L226 Difference]: Without dead ends: 49 [2022-11-02 20:13:04,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=45, Invalid=61, Unknown=4, NotChecked=0, Total=110 [2022-11-02 20:13:04,759 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 36 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:04,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 36 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 3 Unknown, 10 Unchecked, 7.4s Time] [2022-11-02 20:13:04,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-02 20:13:04,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-02 20:13:04,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.125) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:04,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2022-11-02 20:13:04,769 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 24 [2022-11-02 20:13:04,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:04,770 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2022-11-02 20:13:04,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:04,770 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2022-11-02 20:13:04,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-02 20:13:04,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:04,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:04,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-02 20:13:04,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:04,987 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:04,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:04,987 INFO L85 PathProgramCache]: Analyzing trace with hash -60423724, now seen corresponding path program 1 times [2022-11-02 20:13:04,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:04,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655878822] [2022-11-02 20:13:04,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:04,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:04,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:04,990 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:04,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:13:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:07,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:13:07,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:31,592 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__E1~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.neg .cse3))) (and (= |c_ULTIMATE.start_main_~main__S~0#1| (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)))) (fp.mul c_currentRoundingMode .cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) |ULTIMATE.start_main_~main__E1~0#1|) .cse1)))) |ULTIMATE.start_main_~main__E0~0#1|) |ULTIMATE.start_main_~main__E1~0#1|)) (fp.geq |ULTIMATE.start_main_~main__E0~0#1| .cse2) (fp.geq |ULTIMATE.start_main_~main__E1~0#1| .cse2) (fp.leq |ULTIMATE.start_main_~main__E1~0#1| .cse3) (fp.leq |ULTIMATE.start_main_~main__E0~0#1| .cse3))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-02 20:14:16,510 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__E1~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse0 (fp.neg .cse1))) (and (fp.geq |ULTIMATE.start_main_~main__E0~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~main__E1~0#1| .cse1) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0)))) (fp.mul roundNearestTiesToEven .cse2 (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 .cse3) |ULTIMATE.start_main_~main__E1~0#1|) .cse3)))) |ULTIMATE.start_main_~main__E0~0#1|) |ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10000.0)))) (fp.geq |ULTIMATE.start_main_~main__E1~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~main__E0~0#1| .cse1))))) is different from false [2022-11-02 20:14:18,540 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__E1~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse0 (fp.neg .cse1))) (and (fp.geq |ULTIMATE.start_main_~main__E0~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~main__E1~0#1| .cse1) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0)))) (fp.mul roundNearestTiesToEven .cse2 (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 .cse3) |ULTIMATE.start_main_~main__E1~0#1|) .cse3)))) |ULTIMATE.start_main_~main__E0~0#1|) |ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10000.0)))) (fp.geq |ULTIMATE.start_main_~main__E1~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~main__E0~0#1| .cse1))))) is different from true [2022-11-02 20:15:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:24,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:24,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:24,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655878822] [2022-11-02 20:15:24,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655878822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:24,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:24,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:15:24,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938135780] [2022-11-02 20:15:24,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:24,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:15:24,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:24,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:15:24,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=55, Unknown=3, NotChecked=34, Total=132 [2022-11-02 20:15:24,150 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:30,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:15:31,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:31,543 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2022-11-02 20:15:31,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:15:31,544 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-02 20:15:31,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:31,545 INFO L225 Difference]: With dead ends: 73 [2022-11-02 20:15:31,545 INFO L226 Difference]: Without dead ends: 71 [2022-11-02 20:15:31,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=47, Invalid=68, Unknown=3, NotChecked=38, Total=156 [2022-11-02 20:15:31,547 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 38 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:31,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 72 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 119 Invalid, 1 Unknown, 87 Unchecked, 7.1s Time] [2022-11-02 20:15:31,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-02 20:15:31,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 58. [2022-11-02 20:15:31,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.1403508771929824) internal successors, (65), 57 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:31,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2022-11-02 20:15:31,558 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 24 [2022-11-02 20:15:31,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:31,558 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2022-11-02 20:15:31,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:31,558 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2022-11-02 20:15:31,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:15:31,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:31,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:31,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:31,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:31,760 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:31,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:31,761 INFO L85 PathProgramCache]: Analyzing trace with hash -945685853, now seen corresponding path program 1 times [2022-11-02 20:15:31,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:31,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344640011] [2022-11-02 20:15:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:31,761 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:31,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:31,763 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:31,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6508dfce-0040-4a6a-984f-e7c274c0f174/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:15:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:32,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:15:32,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:15,269 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__E1~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (not (fp.leq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) |ULTIMATE.start_main_~main__E0~0#1|) |ULTIMATE.start_main_~main__E1~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven 10000.0))) (fp.geq |ULTIMATE.start_main_~main__E1~0#1| (fp.neg .cse0)) (fp.leq |ULTIMATE.start_main_~main__E0~0#1| .cse0)))) is different from false [2022-11-02 20:16:17,279 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__E1~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (not (fp.leq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) |ULTIMATE.start_main_~main__E0~0#1|) |ULTIMATE.start_main_~main__E1~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven 10000.0))) (fp.geq |ULTIMATE.start_main_~main__E1~0#1| (fp.neg .cse0)) (fp.leq |ULTIMATE.start_main_~main__E0~0#1| .cse0)))) is different from true [2022-11-02 20:16:43,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:43,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:16:43,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:16:43,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344640011] [2022-11-02 20:16:43,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344640011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:43,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:43,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:16:43,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155365969] [2022-11-02 20:16:43,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:43,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:16:43,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:16:43,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:16:43,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=60, Unknown=8, NotChecked=18, Total=132 [2022-11-02 20:16:43,609 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)