./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/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_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/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_a4d1d1e4-c08a-42ec-a40d-2533be851296/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 b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 --- 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 20:56:23,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:56:23,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:56:23,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:56:23,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:56:23,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:56:23,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:56:23,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:56:23,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:56:23,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:56:23,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:56:23,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:56:23,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:56:23,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:56:23,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:56:23,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:56:23,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:56:23,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:56:23,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:56:23,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:56:23,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:56:23,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:56:23,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:56:23,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:56:23,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:56:23,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:56:23,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:56:23,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:56:23,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:56:23,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:56:23,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:56:23,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:56:23,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:56:23,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:56:23,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:56:23,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:56:23,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:56:23,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:56:23,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:56:23,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:56:23,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:56:23,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:56:23,858 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:56:23,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:56:23,859 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:56:23,859 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:56:23,860 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:56:23,861 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:56:23,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:56:23,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:56:23,862 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:56:23,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:56:23,863 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:56:23,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:56:23,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:56:23,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:56:23,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:56:23,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:56:23,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:56:23,865 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:56:23,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:56:23,866 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:56:23,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:56:23,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:56:23,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:56:23,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:56:23,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:23,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:56:23,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:56:23,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:56:23,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:56:23,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:56:23,869 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:56:23,869 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:56:23,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:56:23,870 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_a4d1d1e4-c08a-42ec-a40d-2533be851296/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 [2022-11-02 20:56:24,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:56:24,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:56:24,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:56:24,249 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:56:24,250 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:56:24,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2022-11-02 20:56:24,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/data/f3a57d4ec/e9895dc79fc74930b4f2e59469e09547/FLAG931731971 [2022-11-02 20:56:24,927 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:56:24,928 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2022-11-02 20:56:24,942 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/data/f3a57d4ec/e9895dc79fc74930b4f2e59469e09547/FLAG931731971 [2022-11-02 20:56:25,215 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/data/f3a57d4ec/e9895dc79fc74930b4f2e59469e09547 [2022-11-02 20:56:25,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:56:25,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:56:25,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:25,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:56:25,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:56:25,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:25" (1/1) ... [2022-11-02 20:56:25,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5530452a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:25, skipping insertion in model container [2022-11-02 20:56:25,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:25" (1/1) ... [2022-11-02 20:56:25,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:56:25,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:56:25,618 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_a4d1d1e4-c08a-42ec-a40d-2533be851296/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22534,22547] [2022-11-02 20:56:25,624 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_a4d1d1e4-c08a-42ec-a40d-2533be851296/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22606,22619] [2022-11-02 20:56:25,627 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_a4d1d1e4-c08a-42ec-a40d-2533be851296/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22746,22759] [2022-11-02 20:56:25,630 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_a4d1d1e4-c08a-42ec-a40d-2533be851296/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22820,22833] [2022-11-02 20:56:25,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:25,653 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:56:25,716 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_a4d1d1e4-c08a-42ec-a40d-2533be851296/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22534,22547] [2022-11-02 20:56:25,717 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_a4d1d1e4-c08a-42ec-a40d-2533be851296/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22606,22619] [2022-11-02 20:56:25,718 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_a4d1d1e4-c08a-42ec-a40d-2533be851296/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22746,22759] [2022-11-02 20:56:25,719 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_a4d1d1e4-c08a-42ec-a40d-2533be851296/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22820,22833] [2022-11-02 20:56:25,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:25,751 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:56:25,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:25 WrapperNode [2022-11-02 20:56:25,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:25,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:25,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:56:25,753 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:56:25,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:25" (1/1) ... [2022-11-02 20:56:25,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:25" (1/1) ... [2022-11-02 20:56:25,818 INFO L138 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 122 [2022-11-02 20:56:25,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:25,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:56:25,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:56:25,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:56:25,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:25" (1/1) ... [2022-11-02 20:56:25,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:25" (1/1) ... [2022-11-02 20:56:25,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:25" (1/1) ... [2022-11-02 20:56:25,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:25" (1/1) ... [2022-11-02 20:56:25,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:25" (1/1) ... [2022-11-02 20:56:25,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:25" (1/1) ... [2022-11-02 20:56:25,860 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:25" (1/1) ... [2022-11-02 20:56:25,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:25" (1/1) ... [2022-11-02 20:56:25,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:56:25,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:56:25,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:56:25,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:56:25,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:25" (1/1) ... [2022-11-02 20:56:25,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:25,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:25,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:56:25,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:56:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:56:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:56:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:56:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:56:25,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:56:25,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:56:25,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:56:25,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:56:25,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:56:25,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:56:26,068 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:56:26,070 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:56:26,413 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:56:26,420 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:56:26,421 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-02 20:56:26,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:26 BoogieIcfgContainer [2022-11-02 20:56:26,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:56:26,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:56:26,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:56:26,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:56:26,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:56:25" (1/3) ... [2022-11-02 20:56:26,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abf56d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:26, skipping insertion in model container [2022-11-02 20:56:26,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:25" (2/3) ... [2022-11-02 20:56:26,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abf56d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:26, skipping insertion in model container [2022-11-02 20:56:26,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:26" (3/3) ... [2022-11-02 20:56:26,474 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-1.i [2022-11-02 20:56:26,494 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:56:26,494 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-02 20:56:26,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:56:26,589 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;@25de02ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:56:26,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:56:26,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 32 states have internal predecessors, (53), 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 20:56:26,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:56:26,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:26,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:56:26,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:56:26,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:26,611 INFO L85 PathProgramCache]: Analyzing trace with hash 889968582, now seen corresponding path program 1 times [2022-11-02 20:56:26,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:26,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522295763] [2022-11-02 20:56:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:26,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:26,841 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 20:56:26,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:26,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522295763] [2022-11-02 20:56:26,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522295763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:26,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:26,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:26,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796142753] [2022-11-02 20:56:26,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:26,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:56:26,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:26,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:56:26,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:56:26,883 INFO L87 Difference]: Start difference. First operand has 33 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 32 states have internal predecessors, (53), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 20:56:26,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:26,902 INFO L93 Difference]: Finished difference Result 61 states and 98 transitions. [2022-11-02 20:56:26,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:56:26,904 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-11-02 20:56:26,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:26,912 INFO L225 Difference]: With dead ends: 61 [2022-11-02 20:56:26,912 INFO L226 Difference]: Without dead ends: 27 [2022-11-02 20:56:26,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:56:26,918 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:26,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:26,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-02 20:56:26,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-02 20:56:26,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 26 states have internal predecessors, (30), 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 20:56:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-11-02 20:56:26,952 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 6 [2022-11-02 20:56:26,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:26,953 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-11-02 20:56:26,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 20:56:26,954 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-11-02 20:56:26,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:56:26,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:26,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:26,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:56:26,956 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:56:26,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:26,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1806853233, now seen corresponding path program 1 times [2022-11-02 20:56:26,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:26,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177317056] [2022-11-02 20:56:26,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:26,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:27,292 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 20:56:27,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:27,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177317056] [2022-11-02 20:56:27,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177317056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:27,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:27,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:56:27,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294739375] [2022-11-02 20:56:27,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:27,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:56:27,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:27,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:56:27,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:56:27,296 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 20:56:27,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:27,381 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-11-02 20:56:27,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:56:27,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-11-02 20:56:27,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:27,382 INFO L225 Difference]: With dead ends: 33 [2022-11-02 20:56:27,383 INFO L226 Difference]: Without dead ends: 31 [2022-11-02 20:56:27,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:27,384 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 37 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:27,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 29 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:27,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-02 20:56:27,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2022-11-02 20:56:27,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 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 20:56:27,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-11-02 20:56:27,407 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 7 [2022-11-02 20:56:27,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:27,408 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-11-02 20:56:27,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 20:56:27,408 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-11-02 20:56:27,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:56:27,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:27,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:27,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:56:27,409 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:56:27,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:27,410 INFO L85 PathProgramCache]: Analyzing trace with hash -856511048, now seen corresponding path program 1 times [2022-11-02 20:56:27,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:27,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237560399] [2022-11-02 20:56:27,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:27,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:27,772 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 20:56:27,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:27,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237560399] [2022-11-02 20:56:27,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237560399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:27,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:27,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:27,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061029328] [2022-11-02 20:56:27,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:27,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:27,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:27,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:27,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:27,775 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 20:56:27,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:27,924 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2022-11-02 20:56:27,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:56:27,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2022-11-02 20:56:27,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:27,925 INFO L225 Difference]: With dead ends: 50 [2022-11-02 20:56:27,925 INFO L226 Difference]: Without dead ends: 48 [2022-11-02 20:56:27,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:27,927 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 27 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:27,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 67 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:27,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-02 20:56:27,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2022-11-02 20:56:27,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 31 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 20:56:27,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-11-02 20:56:27,936 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 10 [2022-11-02 20:56:27,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:27,937 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-11-02 20:56:27,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 20:56:27,937 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-11-02 20:56:27,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:56:27,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:27,938 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:27,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:56:27,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:56:27,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:27,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1594081566, now seen corresponding path program 1 times [2022-11-02 20:56:27,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:27,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061340891] [2022-11-02 20:56:27,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:27,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:28,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:28,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:28,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061340891] [2022-11-02 20:56:28,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061340891] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:28,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733369646] [2022-11-02 20:56:28,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:28,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:28,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:28,762 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:28,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:56:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:28,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-02 20:56:28,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:29,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 20:56:29,026 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 20:56:29,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-02 20:56:29,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:29,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-02 20:56:29,171 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 20:56:29,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-02 20:56:29,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-02 20:56:29,221 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:56:29,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:56:29,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:29,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:29,284 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-02 20:56:29,305 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-02 20:56:29,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 20:56:29,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-02 20:56:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:29,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:29,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:56:29,515 INFO L356 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-02 20:56:29,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 1 [2022-11-02 20:56:29,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:29,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733369646] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:29,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:29,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-11-02 20:56:29,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357532478] [2022-11-02 20:56:29,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:29,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:56:29,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:29,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:56:29,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:56:29,520 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 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) [2022-11-02 20:56:29,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:29,836 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2022-11-02 20:56:29,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:29,837 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 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) Word has length 13 [2022-11-02 20:56:29,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:29,838 INFO L225 Difference]: With dead ends: 38 [2022-11-02 20:56:29,838 INFO L226 Difference]: Without dead ends: 36 [2022-11-02 20:56:29,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:56:29,840 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 42 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:29,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 91 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 69 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-11-02 20:56:29,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-02 20:56:29,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 23. [2022-11-02 20:56:29,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 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 20:56:29,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-02 20:56:29,847 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 13 [2022-11-02 20:56:29,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:29,847 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-02 20:56:29,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 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) [2022-11-02 20:56:29,848 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-02 20:56:29,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:56:29,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:29,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:29,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:30,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-02 20:56:30,077 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:56:30,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:30,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1689639521, now seen corresponding path program 1 times [2022-11-02 20:56:30,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:30,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405801049] [2022-11-02 20:56:30,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:30,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:30,184 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 20:56:30,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:30,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405801049] [2022-11-02 20:56:30,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405801049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:30,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:30,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:30,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386798847] [2022-11-02 20:56:30,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:30,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:30,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:30,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:30,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:30,187 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 20:56:30,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:30,263 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-11-02 20:56:30,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:56:30,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 20:56:30,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:30,265 INFO L225 Difference]: With dead ends: 38 [2022-11-02 20:56:30,265 INFO L226 Difference]: Without dead ends: 26 [2022-11-02 20:56:30,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:30,267 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:30,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 58 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:30,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-02 20:56:30,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-11-02 20:56:30,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 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 20:56:30,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-11-02 20:56:30,275 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 14 [2022-11-02 20:56:30,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:30,275 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-11-02 20:56:30,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 20:56:30,276 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-11-02 20:56:30,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:56:30,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:30,277 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:30,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:56:30,277 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:56:30,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:30,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2084817261, now seen corresponding path program 1 times [2022-11-02 20:56:30,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:30,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678185651] [2022-11-02 20:56:30,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:30,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:30,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:30,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:30,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678185651] [2022-11-02 20:56:30,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678185651] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:30,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294199898] [2022-11-02 20:56:30,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:30,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:30,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:30,549 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:30,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:56:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:30,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:56:30,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:30,703 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-02 20:56:30,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 84 [2022-11-02 20:56:30,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:30,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2022-11-02 20:56:30,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:30,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-02 20:56:30,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:30,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 24 [2022-11-02 20:56:30,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:30,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-11-02 20:56:30,857 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-02 20:56:30,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 84 [2022-11-02 20:56:30,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:30,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2022-11-02 20:56:30,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:30,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-02 20:56:30,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:56:30,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2022-11-02 20:56:30,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:30,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-11-02 20:56:31,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:56:31,564 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:56:31,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 58 [2022-11-02 20:56:31,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 20:56:31,599 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:56:31,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:31,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:31,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294199898] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:31,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:31,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:56:31,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518329881] [2022-11-02 20:56:31,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:31,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:56:31,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:31,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:56:31,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:56:31,705 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 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 20:56:31,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:31,806 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2022-11-02 20:56:31,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:31,806 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 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 17 [2022-11-02 20:56:31,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:31,807 INFO L225 Difference]: With dead ends: 52 [2022-11-02 20:56:31,807 INFO L226 Difference]: Without dead ends: 30 [2022-11-02 20:56:31,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:56:31,808 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:31,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 89 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 12 Unchecked, 0.0s Time] [2022-11-02 20:56:31,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-02 20:56:31,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2022-11-02 20:56:31,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 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 20:56:31,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-11-02 20:56:31,816 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2022-11-02 20:56:31,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:31,817 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-11-02 20:56:31,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 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 20:56:31,817 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-11-02 20:56:31,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:56:31,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:31,818 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:31,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:32,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:32,019 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:56:32,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:32,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1088473273, now seen corresponding path program 1 times [2022-11-02 20:56:32,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:32,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911923816] [2022-11-02 20:56:32,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:32,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:32,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:32,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911923816] [2022-11-02 20:56:32,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911923816] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:32,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800782059] [2022-11-02 20:56:32,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:32,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:32,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:32,986 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:33,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:56:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:33,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 20:56:33,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:33,140 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:56:33,140 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-02 20:56:33,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-02 20:56:33,197 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 20:56:33,197 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 20:56:33,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 20:56:33,252 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-02 20:56:33,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-02 20:56:33,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-02 20:56:33,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:56:33,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:33,357 INFO L356 Elim1Store]: treesize reduction 31, result has 31.1 percent of original size [2022-11-02 20:56:33,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 54 [2022-11-02 20:56:33,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:33,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:33,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2022-11-02 20:56:33,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-02 20:56:33,424 INFO L356 Elim1Store]: treesize reduction 20, result has 67.2 percent of original size [2022-11-02 20:56:33,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 53 [2022-11-02 20:56:33,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:56:33,771 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:56:33,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 27 [2022-11-02 20:56:33,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:33,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:33,854 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:56:33,854 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2022-11-02 20:56:33,864 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_513 (Array Int Int)) (v_ArrVal_517 (Array Int Int)) (v_ArrVal_516 (Array Int Int)) (v_arrayElimArr_9 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_9 |c_ULTIMATE.start_main_~end~0#1.offset|))) (or (not (= (select |c_#valid| .cse0) 0)) (not (= |c_ULTIMATE.start_main_~null~0#1.base| (select (let ((.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_9) .cse0 v_ArrVal_517))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_516) .cse0 v_ArrVal_513) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))))) is different from false [2022-11-02 20:56:33,879 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:56:33,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 65 [2022-11-02 20:56:33,891 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:56:33,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 49 [2022-11-02 20:56:33,969 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:56:33,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 1632 treesize of output 1245 [2022-11-02 20:56:34,031 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:56:34,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2703 treesize of output 2614 [2022-11-02 20:56:34,201 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:56:34,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 2632 treesize of output 2314 [2022-11-02 20:56:34,319 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:56:34,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1755 treesize of output 1639 [2022-11-02 20:56:34,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 759 treesize of output 721 [2022-11-02 20:56:34,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 731 treesize of output 669 [2022-11-02 20:58:46,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:46,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800782059] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:58:46,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:58:46,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2022-11-02 20:58:46,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584033942] [2022-11-02 20:58:46,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:46,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:58:46,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:46,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:58:46,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=232, Unknown=1, NotChecked=30, Total=306 [2022-11-02 20:58:46,979 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 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 20:58:47,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:47,915 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2022-11-02 20:58:47,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:58:47,916 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 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 20 [2022-11-02 20:58:47,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:47,917 INFO L225 Difference]: With dead ends: 69 [2022-11-02 20:58:47,917 INFO L226 Difference]: Without dead ends: 67 [2022-11-02 20:58:47,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=95, Invalid=414, Unknown=1, NotChecked=42, Total=552 [2022-11-02 20:58:47,918 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 104 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:47,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 216 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 208 Invalid, 0 Unknown, 80 Unchecked, 0.4s Time] [2022-11-02 20:58:47,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-02 20:58:47,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 42. [2022-11-02 20:58:47,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.2) internal successors, (48), 41 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 20:58:47,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-11-02 20:58:47,930 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 20 [2022-11-02 20:58:47,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:47,931 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-11-02 20:58:47,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 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 20:58:47,931 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-11-02 20:58:47,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:58:47,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:47,932 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:47,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:48,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:48,149 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:58:48,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:48,149 INFO L85 PathProgramCache]: Analyzing trace with hash -67404919, now seen corresponding path program 1 times [2022-11-02 20:58:48,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:48,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706746480] [2022-11-02 20:58:48,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:48,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:48,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:48,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706746480] [2022-11-02 20:58:48,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706746480] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:48,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992950856] [2022-11-02 20:58:48,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:48,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:48,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:48,896 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:48,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:58:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:49,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-02 20:58:49,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:49,050 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 20:58:49,051 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-02 20:58:49,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-02 20:58:49,104 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 20:58:49,104 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 20:58:49,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 20:58:49,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-02 20:58:49,148 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 20:58:49,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 20:58:49,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 20:58:49,173 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:58:49,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:58:49,235 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:58:49,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 45 [2022-11-02 20:58:49,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 20:58:49,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:58:49,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-02 20:58:49,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:58:49,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:58:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:49,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:49,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 54 [2022-11-02 20:58:49,628 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_639 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_639) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) |c_ULTIMATE.start_main_~end~0#1.base|)) (forall ((v_ArrVal_640 (Array Int Int))) (= |c_ULTIMATE.start_main_~end~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_640) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2022-11-02 20:58:49,655 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:58:49,655 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2022-11-02 20:58:49,664 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:58:49,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 42 [2022-11-02 20:58:49,674 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:58:49,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 47 [2022-11-02 20:58:49,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2022-11-02 20:58:49,693 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:58:49,694 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 51 [2022-11-02 20:58:49,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-11-02 20:58:49,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:49,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992950856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:58:49,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:58:49,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 24 [2022-11-02 20:58:49,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922084331] [2022-11-02 20:58:49,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:49,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:58:49,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:49,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:58:49,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=449, Unknown=1, NotChecked=42, Total=552 [2022-11-02 20:58:49,804 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 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 20:58:50,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:50,612 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2022-11-02 20:58:50,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:58:50,613 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 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) Word has length 20 [2022-11-02 20:58:50,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:50,615 INFO L225 Difference]: With dead ends: 80 [2022-11-02 20:58:50,615 INFO L226 Difference]: Without dead ends: 68 [2022-11-02 20:58:50,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=824, Unknown=1, NotChecked=60, Total=1056 [2022-11-02 20:58:50,617 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 57 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:50,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 403 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 311 Invalid, 0 Unknown, 67 Unchecked, 0.3s Time] [2022-11-02 20:58:50,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-02 20:58:50,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 53. [2022-11-02 20:58:50,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 52 states have internal predecessors, (60), 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 20:58:50,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2022-11-02 20:58:50,653 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 20 [2022-11-02 20:58:50,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:50,654 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2022-11-02 20:58:50,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 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 20:58:50,657 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2022-11-02 20:58:50,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:58:50,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:50,659 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:50,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:50,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 20:58:50,872 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:58:50,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:50,873 INFO L85 PathProgramCache]: Analyzing trace with hash 299800945, now seen corresponding path program 1 times [2022-11-02 20:58:50,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:50,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639747966] [2022-11-02 20:58:50,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:50,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:51,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:51,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:51,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639747966] [2022-11-02 20:58:51,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639747966] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:51,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186699368] [2022-11-02 20:58:51,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:51,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:51,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:52,001 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:52,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d1e4-c08a-42ec-a40d-2533be851296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:58:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:52,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-02 20:58:52,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:52,173 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 20:58:52,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-02 20:58:52,234 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:58:52,235 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:58:52,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-02 20:58:52,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:58:52,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-02 20:58:52,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:58:52,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:52,347 INFO L356 Elim1Store]: treesize reduction 31, result has 31.1 percent of original size [2022-11-02 20:58:52,347 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 51 [2022-11-02 20:58:52,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:52,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:52,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 28 [2022-11-02 20:58:52,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-02 20:58:52,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-02 20:58:52,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-02 20:58:52,394 INFO L356 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2022-11-02 20:58:52,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 38 [2022-11-02 20:58:52,730 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-11-02 20:58:52,730 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 47 [2022-11-02 20:58:52,741 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-02 20:58:52,741 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-02 20:58:52,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:58:52,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:52,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:52,914 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:58:52,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 93 [2022-11-02 20:58:52,923 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:58:52,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 100 [2022-11-02 20:58:52,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 247 treesize of output 169 [2022-11-02 20:58:52,976 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_arrayElimArr_18 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_18 |c_ULTIMATE.start_main_~end~0#1.offset|))) (or (not (= (select |c_#valid| .cse0) 0)) (forall ((v_arrayElimArr_19 (Array Int Int))) (or (not (= (select v_arrayElimArr_19 |c_ULTIMATE.start_main_~end~0#1.offset|) 0)) (forall ((v_ArrVal_802 (Array Int Int)) (v_ArrVal_815 (Array Int Int))) (= (let ((.cse1 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_19) .cse0 v_ArrVal_802))) (select (select .cse1 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_18) .cse0 v_ArrVal_815) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (select (select .cse1 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) 0))))))) (forall ((v_arrayElimArr_18 (Array Int Int))) (let ((.cse2 (select v_arrayElimArr_18 |c_ULTIMATE.start_main_~end~0#1.offset|))) (or (not (= (select |c_#valid| .cse2) 0)) (forall ((v_arrayElimArr_19 (Array Int Int))) (or (not (= (select v_arrayElimArr_19 |c_ULTIMATE.start_main_~end~0#1.offset|) 0)) (forall ((v_ArrVal_802 (Array Int Int)) (v_ArrVal_815 (Array Int Int))) (= (select (let ((.cse3 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_18) .cse2 v_ArrVal_815))) (select .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_19) .cse2 v_ArrVal_802) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) .cse2)))))))) is different from false [2022-11-02 20:58:53,005 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:58:53,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 165 treesize of output 150 [2022-11-02 20:58:53,014 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:58:53,015 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 126 [2022-11-02 20:58:53,101 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:58:53,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 3690 treesize of output 2507 [2022-11-02 20:58:53,230 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:58:53,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 2532 treesize of output 2124 [2022-11-02 20:58:54,271 INFO L356 Elim1Store]: treesize reduction 294, result has 60.5 percent of original size [2022-11-02 20:58:54,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 5834 treesize of output 5873 [2022-11-02 20:58:54,800 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:58:54,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4658 treesize of output 4312 [2022-11-02 20:58:55,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4322 treesize of output 4074 [2022-11-02 20:58:55,369 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:58:55,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 4096 treesize of output 3906 [2022-11-02 20:58:55,851 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:58:55,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 3896 treesize of output 3878 [2022-11-02 20:58:56,504 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:58:56,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3908 treesize of output 3736 [2022-11-02 20:58:56,802 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:58:56,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4370 treesize of output 4338 [2022-11-02 20:58:56,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 905 treesize of output 835