./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/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_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/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 64bit --witnessprinter.graph.data.programhash 43c180476f804e78a8269aef99962c5d7a08d71e1723604e5340567598afce1e --- 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 20:59:04,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:59:04,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:59:04,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:59:04,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:59:04,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:59:04,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:59:04,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:59:04,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:59:04,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:59:04,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:59:04,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:59:04,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:59:04,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:59:04,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:59:04,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:59:04,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:59:04,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:59:04,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:59:04,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:59:04,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:59:04,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:59:04,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:59:04,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:59:04,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:59:04,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:59:04,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:59:04,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:59:04,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:59:04,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:59:04,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:59:04,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:59:04,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:59:04,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:59:04,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:59:04,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:59:04,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:59:04,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:59:04,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:59:04,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:59:04,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:59:04,767 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:59:04,789 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:59:04,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:59:04,790 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:59:04,790 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:59:04,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:59:04,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:59:04,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:59:04,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:59:04,792 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:59:04,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:59:04,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:59:04,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:59:04,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:59:04,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:59:04,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:59:04,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:59:04,794 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:59:04,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:59:04,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:59:04,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:59:04,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:59:04,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:04,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:59:04,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:59:04,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:59:04,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:59:04,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:59:04,796 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:59:04,796 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:59:04,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:59:04,796 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_5a342c23-b125-480f-a84e-20d50b8bed08/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c180476f804e78a8269aef99962c5d7a08d71e1723604e5340567598afce1e [2022-11-02 20:59:05,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:59:05,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:59:05,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:59:05,070 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:59:05,071 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:59:05,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c [2022-11-02 20:59:05,147 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/data/c98d7f0e5/7d5cf20f2f5a4223b9d7b9b618b5a4ec/FLAG5b8cd3026 [2022-11-02 20:59:05,646 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:59:05,647 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c [2022-11-02 20:59:05,662 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/data/c98d7f0e5/7d5cf20f2f5a4223b9d7b9b618b5a4ec/FLAG5b8cd3026 [2022-11-02 20:59:05,966 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/data/c98d7f0e5/7d5cf20f2f5a4223b9d7b9b618b5a4ec [2022-11-02 20:59:05,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:59:05,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:59:05,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:05,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:59:05,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:59:05,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:05" (1/1) ... [2022-11-02 20:59:05,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b4a16b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:05, skipping insertion in model container [2022-11-02 20:59:05,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:05" (1/1) ... [2022-11-02 20:59:05,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:59:06,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:59:06,237 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_5a342c23-b125-480f-a84e-20d50b8bed08/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c[1107,1120] [2022-11-02 20:59:06,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:06,525 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:59:06,536 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_5a342c23-b125-480f-a84e-20d50b8bed08/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c[1107,1120] [2022-11-02 20:59:06,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:06,682 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:59:06,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:06 WrapperNode [2022-11-02 20:59:06,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:06,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:06,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:59:06,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:59:06,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:06" (1/1) ... [2022-11-02 20:59:06,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:06" (1/1) ... [2022-11-02 20:59:06,895 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1352 [2022-11-02 20:59:06,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:06,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:59:06,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:59:06,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:59:06,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:06" (1/1) ... [2022-11-02 20:59:06,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:06" (1/1) ... [2022-11-02 20:59:06,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:06" (1/1) ... [2022-11-02 20:59:06,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:06" (1/1) ... [2022-11-02 20:59:06,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:06" (1/1) ... [2022-11-02 20:59:07,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:06" (1/1) ... [2022-11-02 20:59:07,011 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:06" (1/1) ... [2022-11-02 20:59:07,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:06" (1/1) ... [2022-11-02 20:59:07,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:59:07,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:59:07,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:59:07,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:59:07,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:06" (1/1) ... [2022-11-02 20:59:07,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:07,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:07,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:59:07,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:59:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:59:07,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:59:07,535 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:59:07,537 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:59:08,820 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:59:08,829 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:59:08,829 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:59:08,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:08 BoogieIcfgContainer [2022-11-02 20:59:08,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:59:08,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:59:08,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:59:08,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:59:08,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:59:05" (1/3) ... [2022-11-02 20:59:08,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d4e1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:08, skipping insertion in model container [2022-11-02 20:59:08,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:06" (2/3) ... [2022-11-02 20:59:08,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d4e1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:08, skipping insertion in model container [2022-11-02 20:59:08,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:08" (3/3) ... [2022-11-02 20:59:08,841 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Dekker.c [2022-11-02 20:59:08,861 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:59:08,861 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:59:08,914 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:59:08,921 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;@27938b56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:59:08,921 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:59:08,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 169 states have (on average 1.4970414201183433) internal successors, (253), 170 states have internal predecessors, (253), 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 20:59:08,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:59:08,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:08,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:08,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:08,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:08,939 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2022-11-02 20:59:08,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:08,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129530669] [2022-11-02 20:59:08,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:08,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:09,618 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 20:59:09,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:09,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129530669] [2022-11-02 20:59:09,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129530669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:09,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:09,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:59:09,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194280527] [2022-11-02 20:59:09,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:09,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:59:09,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:09,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:59:09,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:59:09,666 INFO L87 Difference]: Start difference. First operand has 171 states, 169 states have (on average 1.4970414201183433) internal successors, (253), 170 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 20:59:09,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:09,771 INFO L93 Difference]: Finished difference Result 337 states and 504 transitions. [2022-11-02 20:59:09,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:59:09,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-02 20:59:09,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:09,788 INFO L225 Difference]: With dead ends: 337 [2022-11-02 20:59:09,788 INFO L226 Difference]: Without dead ends: 168 [2022-11-02 20:59:09,792 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 20:59:09,796 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 487 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:09,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 241 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:09,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-02 20:59:09,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2022-11-02 20:59:09,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4819277108433735) internal successors, (246), 166 states have internal predecessors, (246), 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 20:59:09,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 246 transitions. [2022-11-02 20:59:09,846 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 246 transitions. Word has length 9 [2022-11-02 20:59:09,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:09,847 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 246 transitions. [2022-11-02 20:59:09,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 20:59:09,848 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 246 transitions. [2022-11-02 20:59:09,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:59:09,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:09,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:09,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:59:09,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:09,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:09,850 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2022-11-02 20:59:09,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:09,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963781270] [2022-11-02 20:59:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:09,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:59:10,009 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:59:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:59:10,170 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:59:10,170 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:59:10,172 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:59:10,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:59:10,177 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-02 20:59:10,180 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:59:10,242 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:59:10,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:59:10 BoogieIcfgContainer [2022-11-02 20:59:10,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:59:10,261 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:59:10,261 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:59:10,262 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:59:10,268 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:08" (3/4) ... [2022-11-02 20:59:10,271 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:59:10,271 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:59:10,275 INFO L158 Benchmark]: Toolchain (without parser) took 4302.80ms. Allocated memory was 107.0MB in the beginning and 169.9MB in the end (delta: 62.9MB). Free memory was 66.1MB in the beginning and 127.6MB in the end (delta: -61.5MB). Peak memory consumption was 429.5kB. Max. memory is 16.1GB. [2022-11-02 20:59:10,276 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 107.0MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:59:10,278 INFO L158 Benchmark]: CACSL2BoogieTranslator took 706.99ms. Allocated memory is still 107.0MB. Free memory was 65.9MB in the beginning and 56.4MB in the end (delta: 9.5MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2022-11-02 20:59:10,283 INFO L158 Benchmark]: Boogie Procedure Inliner took 209.11ms. Allocated memory was 107.0MB in the beginning and 132.1MB in the end (delta: 25.2MB). Free memory was 56.4MB in the beginning and 99.5MB in the end (delta: -43.1MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2022-11-02 20:59:10,284 INFO L158 Benchmark]: Boogie Preprocessor took 139.67ms. Allocated memory is still 132.1MB. Free memory was 99.5MB in the beginning and 91.0MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:59:10,286 INFO L158 Benchmark]: RCFGBuilder took 1794.79ms. Allocated memory is still 132.1MB. Free memory was 91.0MB in the beginning and 84.8MB in the end (delta: 6.2MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. [2022-11-02 20:59:10,287 INFO L158 Benchmark]: TraceAbstraction took 1426.72ms. Allocated memory was 132.1MB in the beginning and 169.9MB in the end (delta: 37.7MB). Free memory was 83.9MB in the beginning and 128.7MB in the end (delta: -44.7MB). Peak memory consumption was 53.4MB. Max. memory is 16.1GB. [2022-11-02 20:59:10,288 INFO L158 Benchmark]: Witness Printer took 11.04ms. Allocated memory is still 169.9MB. Free memory was 128.7MB in the beginning and 127.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:59:10,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 107.0MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 706.99ms. Allocated memory is still 107.0MB. Free memory was 65.9MB in the beginning and 56.4MB in the end (delta: 9.5MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 209.11ms. Allocated memory was 107.0MB in the beginning and 132.1MB in the end (delta: 25.2MB). Free memory was 56.4MB in the beginning and 99.5MB in the end (delta: -43.1MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 139.67ms. Allocated memory is still 132.1MB. Free memory was 99.5MB in the beginning and 91.0MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1794.79ms. Allocated memory is still 132.1MB. Free memory was 91.0MB in the beginning and 84.8MB in the end (delta: 6.2MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1426.72ms. Allocated memory was 132.1MB in the beginning and 169.9MB in the end (delta: 37.7MB). Free memory was 83.9MB in the beginning and 128.7MB in the end (delta: -44.7MB). Peak memory consumption was 53.4MB. Max. memory is 16.1GB. * Witness Printer took 11.04ms. Allocated memory is still 169.9MB. Free memory was 128.7MB in the beginning and 127.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 173, overapproximation of bitwiseAnd at line 165. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 3); [L29] const SORT_5 msb_SORT_5 = (SORT_5)1 << (3 - 1); [L31] const SORT_242 mask_SORT_242 = (SORT_242)-1 >> (sizeof(SORT_242) * 8 - 2); [L32] const SORT_242 msb_SORT_242 = (SORT_242)1 << (2 - 1); [L34] const SORT_5 var_6 = 0; [L35] const SORT_1 var_11 = 0; [L36] const SORT_5 var_13 = 5; [L37] const SORT_1 var_15 = 1; [L38] const SORT_5 var_33 = 7; [L39] const SORT_5 var_39 = 1; [L40] const SORT_5 var_46 = 2; [L41] const SORT_5 var_60 = 3; [L42] const SORT_5 var_70 = 4; [L43] const SORT_5 var_199 = 6; [L45] SORT_1 input_2; [L46] SORT_1 input_3; [L47] SORT_1 input_4; [L48] SORT_5 input_32; [L49] SORT_1 input_43; [L50] SORT_5 input_79; [L51] SORT_5 input_80; [L52] SORT_5 input_81; [L53] SORT_5 input_82; [L54] SORT_5 input_83; [L55] SORT_5 input_84; [L56] SORT_5 input_85; [L57] SORT_5 input_86; [L58] SORT_5 input_87; [L59] SORT_5 input_97; [L60] SORT_5 input_112; [L61] SORT_5 input_113; [L62] SORT_5 input_129; [L63] SORT_5 input_130; [L64] SORT_5 input_146; [L65] SORT_5 input_147; [L66] SORT_5 input_163; [L67] SORT_5 input_164; [L68] SORT_5 input_180; [L69] SORT_5 input_181; [L70] SORT_5 input_197; [L71] SORT_5 input_198; [L72] SORT_5 input_217; [L73] SORT_1 input_259; [L74] SORT_1 input_265; [L75] SORT_1 input_266; [L76] SORT_1 input_268; [L77] SORT_1 input_277; [L78] SORT_1 input_278; [L79] SORT_1 input_279; [L80] SORT_1 input_287; [L81] SORT_1 input_297; [L82] SORT_1 input_303; [L83] SORT_1 input_304; [L84] SORT_1 input_306; [L85] SORT_1 input_315; [L86] SORT_1 input_316; [L87] SORT_1 input_317; [L88] SORT_1 input_325; [L90] SORT_5 state_7 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L91] SORT_5 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L92] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_5 init_8_arg_1 = var_6; [L97] state_7 = init_8_arg_1 [L98] SORT_5 init_10_arg_1 = var_6; [L99] state_9 = init_10_arg_1 [L100] SORT_1 init_26_arg_1 = var_15; [L101] state_25 = init_26_arg_1 [L102] SORT_1 init_28_arg_1 = var_15; [L103] state_27 = init_28_arg_1 VAL [init_10_arg_1=0, init_26_arg_1=1, init_28_arg_1=1, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_242=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_242=2, msb_SORT_5=4, state_25=1, state_27=1, state_30=0, state_7=0, state_9=0, var_11=0, var_13=5, var_15=1, var_199=6, var_33=7, var_39=1, var_46=2, var_6=0, var_60=3, var_70=4] [L106] input_2 = __VERIFIER_nondet_uchar() [L107] input_3 = __VERIFIER_nondet_uchar() [L108] input_4 = __VERIFIER_nondet_uchar() [L109] input_4 = input_4 & mask_SORT_1 [L110] input_32 = __VERIFIER_nondet_uchar() [L111] input_43 = __VERIFIER_nondet_uchar() [L112] input_79 = __VERIFIER_nondet_uchar() [L113] input_80 = __VERIFIER_nondet_uchar() [L114] input_81 = __VERIFIER_nondet_uchar() [L115] input_82 = __VERIFIER_nondet_uchar() [L116] input_83 = __VERIFIER_nondet_uchar() [L117] input_84 = __VERIFIER_nondet_uchar() [L118] input_85 = __VERIFIER_nondet_uchar() [L119] input_86 = __VERIFIER_nondet_uchar() [L120] input_87 = __VERIFIER_nondet_uchar() [L121] input_97 = __VERIFIER_nondet_uchar() [L122] input_112 = __VERIFIER_nondet_uchar() [L123] input_113 = __VERIFIER_nondet_uchar() [L124] input_129 = __VERIFIER_nondet_uchar() [L125] input_130 = __VERIFIER_nondet_uchar() [L126] input_146 = __VERIFIER_nondet_uchar() [L127] input_147 = __VERIFIER_nondet_uchar() [L128] input_163 = __VERIFIER_nondet_uchar() [L129] input_164 = __VERIFIER_nondet_uchar() [L130] input_180 = __VERIFIER_nondet_uchar() [L131] input_181 = __VERIFIER_nondet_uchar() [L132] input_197 = __VERIFIER_nondet_uchar() [L133] input_198 = __VERIFIER_nondet_uchar() [L134] input_217 = __VERIFIER_nondet_uchar() [L135] input_259 = __VERIFIER_nondet_uchar() [L136] input_265 = __VERIFIER_nondet_uchar() [L137] input_266 = __VERIFIER_nondet_uchar() [L138] input_268 = __VERIFIER_nondet_uchar() [L139] input_277 = __VERIFIER_nondet_uchar() [L140] input_278 = __VERIFIER_nondet_uchar() [L141] input_279 = __VERIFIER_nondet_uchar() [L142] input_287 = __VERIFIER_nondet_uchar() [L143] input_297 = __VERIFIER_nondet_uchar() [L144] input_303 = __VERIFIER_nondet_uchar() [L145] input_304 = __VERIFIER_nondet_uchar() [L146] input_306 = __VERIFIER_nondet_uchar() [L147] input_315 = __VERIFIER_nondet_uchar() [L148] input_316 = __VERIFIER_nondet_uchar() [L149] input_317 = __VERIFIER_nondet_uchar() [L150] input_325 = __VERIFIER_nondet_uchar() [L153] SORT_1 var_12_arg_0 = var_11; [L154] SORT_5 var_12_arg_1 = state_9; [L155] SORT_5 var_12_arg_2 = state_7; VAL [init_10_arg_1=0, init_26_arg_1=1, init_28_arg_1=1, init_8_arg_1=0, input_112=45, input_113=16, input_129=38, input_130=20, input_146=18, input_147=37, input_163=42, input_164=27, input_180=12, input_181=8, input_197=25, input_198=40, input_2=6, input_217=23, input_259=28, input_265=14, input_266=26, input_268=13, input_277=35, input_278=19, input_279=5, input_287=17, input_297=31, input_3=15, input_303=46, input_304=10, input_306=7, input_315=9, input_316=32, input_317=47, input_32=43, input_325=36, input_4=0, input_43=11, input_79=39, input_80=41, input_81=21, input_82=4, input_83=33, input_84=29, input_85=22, input_86=30, input_87=24, input_97=44, mask_SORT_1=1, mask_SORT_242=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_242=2, msb_SORT_5=4, state_25=1, state_27=1, state_30=0, state_7=0, state_9=0, var_11=0, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=0, var_13=5, var_15=1, var_199=6, var_33=7, var_39=1, var_46=2, var_6=0, var_60=3, var_70=4] [L156] EXPR var_12_arg_0 ? var_12_arg_1 : var_12_arg_2 VAL [init_10_arg_1=0, init_26_arg_1=1, init_28_arg_1=1, init_8_arg_1=0, input_112=45, input_113=16, input_129=38, input_130=20, input_146=18, input_147=37, input_163=42, input_164=27, input_180=12, input_181=8, input_197=25, input_198=40, input_2=6, input_217=23, input_259=28, input_265=14, input_266=26, input_268=13, input_277=35, input_278=19, input_279=5, input_287=17, input_297=31, input_3=15, input_303=46, input_304=10, input_306=7, input_315=9, input_316=32, input_317=47, input_32=43, input_325=36, input_4=0, input_43=11, input_79=39, input_80=41, input_81=21, input_82=4, input_83=33, input_84=29, input_85=22, input_86=30, input_87=24, input_97=44, mask_SORT_1=1, mask_SORT_242=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_242=2, msb_SORT_5=4, state_25=1, state_27=1, state_30=0, state_7=0, state_9=0, var_11=0, var_12_arg_0=0, var_12_arg_0 ? var_12_arg_1 : var_12_arg_2=0, var_12_arg_1=0, var_12_arg_2=0, var_13=5, var_15=1, var_199=6, var_33=7, var_39=1, var_46=2, var_6=0, var_60=3, var_70=4] [L156] SORT_5 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L157] var_12 = var_12 & mask_SORT_5 [L158] SORT_5 var_14_arg_0 = var_12; [L159] SORT_5 var_14_arg_1 = var_13; [L160] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L161] SORT_1 var_16_arg_0 = var_15; [L162] SORT_5 var_16_arg_1 = state_9; [L163] SORT_5 var_16_arg_2 = state_7; VAL [init_10_arg_1=0, init_26_arg_1=1, init_28_arg_1=1, init_8_arg_1=0, input_112=45, input_113=16, input_129=38, input_130=20, input_146=18, input_147=37, input_163=42, input_164=27, input_180=12, input_181=8, input_197=25, input_198=40, input_2=6, input_217=23, input_259=28, input_265=14, input_266=26, input_268=13, input_277=35, input_278=19, input_279=5, input_287=17, input_297=31, input_3=15, input_303=46, input_304=10, input_306=7, input_315=9, input_316=32, input_317=47, input_32=43, input_325=36, input_4=0, input_43=11, input_79=39, input_80=41, input_81=21, input_82=4, input_83=33, input_84=29, input_85=22, input_86=30, input_87=24, input_97=44, mask_SORT_1=1, mask_SORT_242=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_242=2, msb_SORT_5=4, state_25=1, state_27=1, state_30=0, state_7=0, state_9=0, var_11=0, var_12=0, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=0, var_13=5, var_14=0, var_14_arg_0=0, var_14_arg_1=5, var_15=1, var_16_arg_0=1, var_16_arg_1=0, var_16_arg_2=0, var_199=6, var_33=7, var_39=1, var_46=2, var_6=0, var_60=3, var_70=4] [L164] EXPR var_16_arg_0 ? var_16_arg_1 : var_16_arg_2 VAL [init_10_arg_1=0, init_26_arg_1=1, init_28_arg_1=1, init_8_arg_1=0, input_112=45, input_113=16, input_129=38, input_130=20, input_146=18, input_147=37, input_163=42, input_164=27, input_180=12, input_181=8, input_197=25, input_198=40, input_2=6, input_217=23, input_259=28, input_265=14, input_266=26, input_268=13, input_277=35, input_278=19, input_279=5, input_287=17, input_297=31, input_3=15, input_303=46, input_304=10, input_306=7, input_315=9, input_316=32, input_317=47, input_32=43, input_325=36, input_4=0, input_43=11, input_79=39, input_80=41, input_81=21, input_82=4, input_83=33, input_84=29, input_85=22, input_86=30, input_87=24, input_97=44, mask_SORT_1=1, mask_SORT_242=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_242=2, msb_SORT_5=4, state_25=1, state_27=1, state_30=0, state_7=0, state_9=0, var_11=0, var_12=0, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=0, var_13=5, var_14=0, var_14_arg_0=0, var_14_arg_1=5, var_15=1, var_16_arg_0=1, var_16_arg_0 ? var_16_arg_1 : var_16_arg_2=0, var_16_arg_1=0, var_16_arg_2=0, var_199=6, var_33=7, var_39=1, var_46=2, var_6=0, var_60=3, var_70=4] [L164] SORT_5 var_16 = var_16_arg_0 ? var_16_arg_1 : var_16_arg_2; [L165] var_16 = var_16 & mask_SORT_5 [L166] SORT_5 var_17_arg_0 = var_16; [L167] SORT_5 var_17_arg_1 = var_13; [L168] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L169] SORT_1 var_18_arg_0 = var_14; [L170] SORT_1 var_18_arg_1 = var_17; [L171] SORT_1 var_18 = var_18_arg_0 & var_18_arg_1; [L172] SORT_1 var_19_arg_0 = var_18; [L173] SORT_1 var_19 = ~var_19_arg_0; [L174] SORT_1 var_22_arg_0 = var_19; [L175] SORT_1 var_22 = ~var_22_arg_0; [L176] SORT_1 var_23_arg_0 = var_15; [L177] SORT_1 var_23_arg_1 = var_22; [L178] SORT_1 var_23 = var_23_arg_0 & var_23_arg_1; [L179] var_23 = var_23 & mask_SORT_1 [L180] SORT_1 bad_24_arg_0 = var_23; [L181] CALL __VERIFIER_assert(!(bad_24_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 171 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 487 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 487 mSDsluCounter, 241 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 239 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 20:59:10,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/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_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/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 64bit --witnessprinter.graph.data.programhash 43c180476f804e78a8269aef99962c5d7a08d71e1723604e5340567598afce1e --- 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 20:59:12,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:59:12,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:59:12,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:59:12,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:59:12,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:59:12,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:59:12,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:59:12,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:59:12,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:59:12,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:59:12,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:59:12,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:59:12,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:59:12,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:59:12,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:59:12,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:59:12,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:59:12,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:59:12,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:59:12,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:59:12,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:59:12,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:59:12,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:59:12,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:59:12,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:59:12,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:59:12,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:59:12,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:59:12,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:59:12,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:59:12,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:59:12,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:59:12,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:59:12,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:59:12,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:59:12,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:59:12,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:59:12,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:59:12,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:59:12,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:59:12,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:59:12,886 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:59:12,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:59:12,887 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:59:12,888 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:59:12,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:59:12,889 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:59:12,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:59:12,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:59:12,891 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:59:12,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:59:12,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:59:12,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:59:12,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:59:12,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:59:12,893 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:59:12,893 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:59:12,893 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:59:12,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:59:12,894 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:59:12,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:59:12,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:59:12,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:59:12,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:59:12,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:12,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:59:12,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:59:12,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:59:12,896 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:59:12,896 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:59:12,896 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:59:12,896 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:59:12,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:59:12,897 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:59:12,897 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c180476f804e78a8269aef99962c5d7a08d71e1723604e5340567598afce1e [2022-11-02 20:59:13,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:59:13,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:59:13,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:59:13,370 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:59:13,373 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:59:13,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c [2022-11-02 20:59:13,444 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/data/d9bc94a84/7ada739a9b0d4b2b8cfd998d742c2f2b/FLAG218a71e22 [2022-11-02 20:59:14,111 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:59:14,112 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c [2022-11-02 20:59:14,136 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/data/d9bc94a84/7ada739a9b0d4b2b8cfd998d742c2f2b/FLAG218a71e22 [2022-11-02 20:59:14,296 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/data/d9bc94a84/7ada739a9b0d4b2b8cfd998d742c2f2b [2022-11-02 20:59:14,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:59:14,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:59:14,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:14,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:59:14,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:59:14,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:14" (1/1) ... [2022-11-02 20:59:14,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9e2a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:14, skipping insertion in model container [2022-11-02 20:59:14,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:14" (1/1) ... [2022-11-02 20:59:14,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:59:14,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:59:14,608 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_5a342c23-b125-480f-a84e-20d50b8bed08/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c[1107,1120] [2022-11-02 20:59:14,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:14,872 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:59:14,883 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_5a342c23-b125-480f-a84e-20d50b8bed08/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c[1107,1120] [2022-11-02 20:59:15,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:15,044 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:59:15,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15 WrapperNode [2022-11-02 20:59:15,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:15,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:15,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:59:15,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:59:15,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:15,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:15,165 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1352 [2022-11-02 20:59:15,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:15,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:59:15,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:59:15,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:59:15,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:15,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:15,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:15,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:15,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:15,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:15,228 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:15,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:15,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:59:15,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:59:15,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:59:15,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:59:15,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:15,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:15,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:15,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:59:15,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:59:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:59:15,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:59:15,780 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:59:15,781 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:59:16,749 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:59:16,758 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:59:16,758 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:59:16,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:16 BoogieIcfgContainer [2022-11-02 20:59:16,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:59:16,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:59:16,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:59:16,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:59:16,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:59:14" (1/3) ... [2022-11-02 20:59:16,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d847c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:16, skipping insertion in model container [2022-11-02 20:59:16,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (2/3) ... [2022-11-02 20:59:16,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d847c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:16, skipping insertion in model container [2022-11-02 20:59:16,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:16" (3/3) ... [2022-11-02 20:59:16,783 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Dekker.c [2022-11-02 20:59:16,802 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:59:16,802 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:59:16,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:59:16,891 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;@76613b7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:59:16,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:59:16,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 169 states have (on average 1.4970414201183433) internal successors, (253), 170 states have internal predecessors, (253), 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 20:59:16,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:59:16,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:16,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:16,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:16,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:16,916 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2022-11-02 20:59:16,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:16,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489501511] [2022-11-02 20:59:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:16,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:16,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:16,938 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:16,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:59:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:17,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:59:17,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:17,303 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 20:59:17,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:17,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:17,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489501511] [2022-11-02 20:59:17,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489501511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:17,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:17,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:59:17,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089812965] [2022-11-02 20:59:17,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:17,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:59:17,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:17,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:59:17,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:59:17,341 INFO L87 Difference]: Start difference. First operand has 171 states, 169 states have (on average 1.4970414201183433) internal successors, (253), 170 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 20:59:17,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:17,434 INFO L93 Difference]: Finished difference Result 337 states and 504 transitions. [2022-11-02 20:59:17,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:59:17,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-02 20:59:17,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:17,446 INFO L225 Difference]: With dead ends: 337 [2022-11-02 20:59:17,446 INFO L226 Difference]: Without dead ends: 168 [2022-11-02 20:59:17,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 20:59:17,452 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 487 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:17,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 241 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:17,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-02 20:59:17,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2022-11-02 20:59:17,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4819277108433735) internal successors, (246), 166 states have internal predecessors, (246), 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 20:59:17,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 246 transitions. [2022-11-02 20:59:17,496 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 246 transitions. Word has length 9 [2022-11-02 20:59:17,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:17,497 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 246 transitions. [2022-11-02 20:59:17,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 20:59:17,497 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 246 transitions. [2022-11-02 20:59:17,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:59:17,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:17,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:17,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:17,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:17,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:17,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:17,711 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2022-11-02 20:59:17,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:17,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132274162] [2022-11-02 20:59:17,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:17,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:17,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:17,714 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:17,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:59:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:18,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-02 20:59:18,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:18,164 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 20:59:18,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:18,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:18,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132274162] [2022-11-02 20:59:18,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132274162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:18,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:18,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:59:18,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49996023] [2022-11-02 20:59:18,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:18,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:18,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:18,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:18,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:18,175 INFO L87 Difference]: Start difference. First operand 167 states and 246 transitions. Second operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 20:59:18,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:18,591 INFO L93 Difference]: Finished difference Result 337 states and 496 transitions. [2022-11-02 20:59:18,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:59:18,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 9 [2022-11-02 20:59:18,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:18,595 INFO L225 Difference]: With dead ends: 337 [2022-11-02 20:59:18,595 INFO L226 Difference]: Without dead ends: 335 [2022-11-02 20:59:18,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:59:18,596 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 956 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:18,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 1373 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:59:18,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-02 20:59:18,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 173. [2022-11-02 20:59:18,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.4709302325581395) internal successors, (253), 172 states have internal predecessors, (253), 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 20:59:18,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 253 transitions. [2022-11-02 20:59:18,614 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 253 transitions. Word has length 9 [2022-11-02 20:59:18,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:18,614 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 253 transitions. [2022-11-02 20:59:18,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 20:59:18,615 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 253 transitions. [2022-11-02 20:59:18,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:18,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:18,620 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:18,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:18,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:18,833 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:18,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:18,843 INFO L85 PathProgramCache]: Analyzing trace with hash -361214691, now seen corresponding path program 1 times [2022-11-02 20:59:18,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:18,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800686041] [2022-11-02 20:59:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:18,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:18,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:18,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:18,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:59:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:19,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:19,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:19,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:19,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:19,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:19,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800686041] [2022-11-02 20:59:19,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800686041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:19,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:19,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:59:19,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493295953] [2022-11-02 20:59:19,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:19,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:19,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:19,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:19,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:19,644 INFO L87 Difference]: Start difference. First operand 173 states and 253 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 20:59:20,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:20,115 INFO L93 Difference]: Finished difference Result 992 states and 1462 transitions. [2022-11-02 20:59:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:59:20,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:20,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:20,119 INFO L225 Difference]: With dead ends: 992 [2022-11-02 20:59:20,119 INFO L226 Difference]: Without dead ends: 827 [2022-11-02 20:59:20,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:59:20,122 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 1896 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 2031 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:20,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1896 Valid, 2031 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:59:20,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-11-02 20:59:20,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 181. [2022-11-02 20:59:20,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.4666666666666666) internal successors, (264), 180 states have internal predecessors, (264), 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 20:59:20,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 264 transitions. [2022-11-02 20:59:20,137 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 264 transitions. Word has length 172 [2022-11-02 20:59:20,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:20,137 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 264 transitions. [2022-11-02 20:59:20,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 20:59:20,138 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 264 transitions. [2022-11-02 20:59:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:20,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:20,143 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:20,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-02 20:59:20,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:20,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:20,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:20,367 INFO L85 PathProgramCache]: Analyzing trace with hash -16386529, now seen corresponding path program 1 times [2022-11-02 20:59:20,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:20,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699927360] [2022-11-02 20:59:20,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:20,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:20,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:20,370 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:20,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:59:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:21,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:59:21,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:21,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:21,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:21,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:21,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699927360] [2022-11-02 20:59:21,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699927360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:21,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:21,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:59:21,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745201207] [2022-11-02 20:59:21,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:21,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:21,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:21,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:21,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:21,390 INFO L87 Difference]: Start difference. First operand 181 states and 264 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 20:59:21,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:21,405 INFO L93 Difference]: Finished difference Result 348 states and 511 transitions. [2022-11-02 20:59:21,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:59:21,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:21,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:21,408 INFO L225 Difference]: With dead ends: 348 [2022-11-02 20:59:21,408 INFO L226 Difference]: Without dead ends: 183 [2022-11-02 20:59:21,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:21,418 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 14 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:21,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1130 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2022-11-02 20:59:21,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-02 20:59:21,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-11-02 20:59:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.4615384615384615) internal successors, (266), 182 states have internal predecessors, (266), 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 20:59:21,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 266 transitions. [2022-11-02 20:59:21,431 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 266 transitions. Word has length 172 [2022-11-02 20:59:21,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:21,431 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 266 transitions. [2022-11-02 20:59:21,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 20:59:21,432 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 266 transitions. [2022-11-02 20:59:21,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:21,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:21,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:21,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:21,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:21,637 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:21,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:21,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1785858143, now seen corresponding path program 1 times [2022-11-02 20:59:21,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:21,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896149059] [2022-11-02 20:59:21,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:21,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:21,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:21,642 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:21,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:59:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:22,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:22,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:22,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:22,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:22,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896149059] [2022-11-02 20:59:22,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896149059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:22,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:22,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:59:22,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6494715] [2022-11-02 20:59:22,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:22,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:59:22,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:22,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:59:22,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:22,400 INFO L87 Difference]: Start difference. First operand 183 states and 266 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:22,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:22,980 INFO L93 Difference]: Finished difference Result 994 states and 1463 transitions. [2022-11-02 20:59:22,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:59:22,981 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:22,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:22,984 INFO L225 Difference]: With dead ends: 994 [2022-11-02 20:59:22,984 INFO L226 Difference]: Without dead ends: 829 [2022-11-02 20:59:22,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:59:22,985 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 2125 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:22,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2125 Valid, 2484 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:59:22,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-11-02 20:59:22,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 185. [2022-11-02 20:59:22,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.4565217391304348) internal successors, (268), 184 states have internal predecessors, (268), 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 20:59:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 268 transitions. [2022-11-02 20:59:22,997 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 268 transitions. Word has length 172 [2022-11-02 20:59:22,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:22,997 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 268 transitions. [2022-11-02 20:59:22,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:22,998 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 268 transitions. [2022-11-02 20:59:22,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:23,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:23,000 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:23,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:23,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:23,214 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:23,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:23,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1103917475, now seen corresponding path program 1 times [2022-11-02 20:59:23,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:23,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418513676] [2022-11-02 20:59:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:23,216 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:23,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:23,217 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:23,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:59:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:23,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:23,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:23,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:23,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:23,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418513676] [2022-11-02 20:59:23,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418513676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:23,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:23,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:59:23,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53903656] [2022-11-02 20:59:23,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:23,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:59:23,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:23,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:59:23,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:23,961 INFO L87 Difference]: Start difference. First operand 185 states and 268 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:24,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:24,513 INFO L93 Difference]: Finished difference Result 990 states and 1456 transitions. [2022-11-02 20:59:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:59:24,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:24,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:24,517 INFO L225 Difference]: With dead ends: 990 [2022-11-02 20:59:24,517 INFO L226 Difference]: Without dead ends: 825 [2022-11-02 20:59:24,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:59:24,518 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 2105 mSDsluCounter, 2245 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:24,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2105 Valid, 2484 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:59:24,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-11-02 20:59:24,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 189. [2022-11-02 20:59:24,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.452127659574468) internal successors, (273), 188 states have internal predecessors, (273), 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 20:59:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 273 transitions. [2022-11-02 20:59:24,534 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 273 transitions. Word has length 172 [2022-11-02 20:59:24,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:24,534 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 273 transitions. [2022-11-02 20:59:24,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:24,534 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 273 transitions. [2022-11-02 20:59:24,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:24,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:24,536 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:24,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:24,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:24,755 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:24,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:24,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1489779877, now seen corresponding path program 1 times [2022-11-02 20:59:24,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:24,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753395833] [2022-11-02 20:59:24,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:24,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:24,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:24,758 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:24,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:59:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:25,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:59:25,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:25,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:25,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:25,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:25,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753395833] [2022-11-02 20:59:25,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753395833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:25,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:25,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:59:25,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993590610] [2022-11-02 20:59:25,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:25,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:59:25,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:25,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:59:25,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:25,355 INFO L87 Difference]: Start difference. First operand 189 states and 273 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 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 20:59:25,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:25,443 INFO L93 Difference]: Finished difference Result 698 states and 1023 transitions. [2022-11-02 20:59:25,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:59:25,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:25,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:25,445 INFO L225 Difference]: With dead ends: 698 [2022-11-02 20:59:25,446 INFO L226 Difference]: Without dead ends: 533 [2022-11-02 20:59:25,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:25,447 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1202 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:25,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 1059 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:25,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-11-02 20:59:25,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 195. [2022-11-02 20:59:25,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.443298969072165) internal successors, (280), 194 states have internal predecessors, (280), 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 20:59:25,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 280 transitions. [2022-11-02 20:59:25,459 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 280 transitions. Word has length 172 [2022-11-02 20:59:25,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:25,459 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 280 transitions. [2022-11-02 20:59:25,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 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 20:59:25,460 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 280 transitions. [2022-11-02 20:59:25,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:25,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:25,462 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:25,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-02 20:59:25,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:25,683 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:25,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:25,683 INFO L85 PathProgramCache]: Analyzing trace with hash -874061785, now seen corresponding path program 1 times [2022-11-02 20:59:25,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:25,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262717767] [2022-11-02 20:59:25,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:25,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:25,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:25,685 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:25,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:59:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:26,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:26,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:26,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:26,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:26,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:26,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262717767] [2022-11-02 20:59:26,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262717767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:26,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:26,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:59:26,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613377584] [2022-11-02 20:59:26,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:26,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:59:26,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:26,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:59:26,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:26,355 INFO L87 Difference]: Start difference. First operand 195 states and 280 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:26,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:26,897 INFO L93 Difference]: Finished difference Result 1017 states and 1489 transitions. [2022-11-02 20:59:26,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:59:26,899 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:26,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:26,904 INFO L225 Difference]: With dead ends: 1017 [2022-11-02 20:59:26,904 INFO L226 Difference]: Without dead ends: 848 [2022-11-02 20:59:26,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:59:26,906 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 2100 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:26,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2100 Valid, 2486 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:59:26,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-11-02 20:59:26,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 201. [2022-11-02 20:59:26,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.435) internal successors, (287), 200 states have internal predecessors, (287), 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 20:59:26,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 287 transitions. [2022-11-02 20:59:26,916 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 287 transitions. Word has length 172 [2022-11-02 20:59:26,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:26,917 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 287 transitions. [2022-11-02 20:59:26,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:26,917 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 287 transitions. [2022-11-02 20:59:26,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:26,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:26,919 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:26,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:27,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:27,134 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:27,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:27,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1022917673, now seen corresponding path program 1 times [2022-11-02 20:59:27,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:27,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495556417] [2022-11-02 20:59:27,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:27,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:27,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:27,139 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:27,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:59:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:27,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:27,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:27,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:27,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:27,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495556417] [2022-11-02 20:59:27,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495556417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:27,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:27,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:59:27,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442175321] [2022-11-02 20:59:27,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:27,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:59:27,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:27,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:59:27,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:27,862 INFO L87 Difference]: Start difference. First operand 201 states and 287 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:28,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:28,425 INFO L93 Difference]: Finished difference Result 1018 states and 1489 transitions. [2022-11-02 20:59:28,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:59:28,426 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:28,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:28,429 INFO L225 Difference]: With dead ends: 1018 [2022-11-02 20:59:28,430 INFO L226 Difference]: Without dead ends: 849 [2022-11-02 20:59:28,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:59:28,433 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 2087 mSDsluCounter, 2229 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2087 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:28,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2087 Valid, 2480 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:59:28,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-11-02 20:59:28,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 205. [2022-11-02 20:59:28,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.4313725490196079) internal successors, (292), 204 states have internal predecessors, (292), 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 20:59:28,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 292 transitions. [2022-11-02 20:59:28,446 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 292 transitions. Word has length 172 [2022-11-02 20:59:28,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:28,447 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 292 transitions. [2022-11-02 20:59:28,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:28,447 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 292 transitions. [2022-11-02 20:59:28,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:28,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:28,449 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:28,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:28,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:28,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:28,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:28,674 INFO L85 PathProgramCache]: Analyzing trace with hash 866937131, now seen corresponding path program 1 times [2022-11-02 20:59:28,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:28,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664518897] [2022-11-02 20:59:28,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:28,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:28,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:28,676 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:28,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:59:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:29,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:29,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:29,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:29,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:29,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664518897] [2022-11-02 20:59:29,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664518897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:29,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:29,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:59:29,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838976293] [2022-11-02 20:59:29,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:29,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:59:29,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:29,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:59:29,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:29,404 INFO L87 Difference]: Start difference. First operand 205 states and 292 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:29,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:29,934 INFO L93 Difference]: Finished difference Result 1018 states and 1488 transitions. [2022-11-02 20:59:29,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:59:29,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:29,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:29,942 INFO L225 Difference]: With dead ends: 1018 [2022-11-02 20:59:29,942 INFO L226 Difference]: Without dead ends: 849 [2022-11-02 20:59:29,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:59:29,943 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 2074 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:29,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2074 Valid, 2482 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:59:29,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-11-02 20:59:29,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 209. [2022-11-02 20:59:29,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.4278846153846154) internal successors, (297), 208 states have internal predecessors, (297), 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 20:59:29,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 297 transitions. [2022-11-02 20:59:29,968 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 297 transitions. Word has length 172 [2022-11-02 20:59:29,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:29,968 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 297 transitions. [2022-11-02 20:59:29,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:29,969 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 297 transitions. [2022-11-02 20:59:29,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:29,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:29,978 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:30,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:30,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:30,195 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:30,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:30,196 INFO L85 PathProgramCache]: Analyzing trace with hash 936585005, now seen corresponding path program 1 times [2022-11-02 20:59:30,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:30,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61037459] [2022-11-02 20:59:30,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:30,197 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:30,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:30,198 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:30,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:59:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:30,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:30,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:30,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:30,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:30,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61037459] [2022-11-02 20:59:30,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61037459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:30,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:30,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:59:30,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908409756] [2022-11-02 20:59:30,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:30,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:59:30,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:30,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:59:30,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:30,919 INFO L87 Difference]: Start difference. First operand 209 states and 297 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:31,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:31,428 INFO L93 Difference]: Finished difference Result 1018 states and 1487 transitions. [2022-11-02 20:59:31,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:59:31,429 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:31,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:31,432 INFO L225 Difference]: With dead ends: 1018 [2022-11-02 20:59:31,432 INFO L226 Difference]: Without dead ends: 849 [2022-11-02 20:59:31,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:59:31,433 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 2051 mSDsluCounter, 2213 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:31,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2051 Valid, 2479 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:59:31,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-11-02 20:59:31,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 217. [2022-11-02 20:59:31,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.4259259259259258) internal successors, (308), 216 states have internal predecessors, (308), 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 20:59:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 308 transitions. [2022-11-02 20:59:31,447 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 308 transitions. Word has length 172 [2022-11-02 20:59:31,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:31,447 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 308 transitions. [2022-11-02 20:59:31,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:31,448 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 308 transitions. [2022-11-02 20:59:31,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:31,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:31,450 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:31,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-02 20:59:31,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:31,668 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:31,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:31,668 INFO L85 PathProgramCache]: Analyzing trace with hash -11466961, now seen corresponding path program 1 times [2022-11-02 20:59:31,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:31,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131006622] [2022-11-02 20:59:31,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:31,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:31,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:31,671 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:31,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:59:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:32,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:32,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:32,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:32,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:32,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:32,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131006622] [2022-11-02 20:59:32,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131006622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:32,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:32,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:59:32,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257331288] [2022-11-02 20:59:32,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:32,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:32,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:32,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:32,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:32,493 INFO L87 Difference]: Start difference. First operand 217 states and 308 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 20:59:32,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:32,941 INFO L93 Difference]: Finished difference Result 982 states and 1433 transitions. [2022-11-02 20:59:32,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:59:32,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:32,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:32,945 INFO L225 Difference]: With dead ends: 982 [2022-11-02 20:59:32,945 INFO L226 Difference]: Without dead ends: 813 [2022-11-02 20:59:32,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:59:32,946 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 1752 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:32,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1752 Valid, 2019 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:59:32,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-11-02 20:59:32,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 219. [2022-11-02 20:59:32,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.4220183486238531) internal successors, (310), 218 states have internal predecessors, (310), 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 20:59:32,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 310 transitions. [2022-11-02 20:59:32,959 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 310 transitions. Word has length 172 [2022-11-02 20:59:32,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:32,959 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 310 transitions. [2022-11-02 20:59:32,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 20:59:32,960 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 310 transitions. [2022-11-02 20:59:32,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:32,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:32,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:32,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:33,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:33,179 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:33,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:33,179 INFO L85 PathProgramCache]: Analyzing trace with hash -445972559, now seen corresponding path program 1 times [2022-11-02 20:59:33,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:33,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284853371] [2022-11-02 20:59:33,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:33,180 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:33,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:33,181 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:33,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:59:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:33,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:33,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:33,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:33,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:33,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:33,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284853371] [2022-11-02 20:59:33,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284853371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:33,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:33,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:59:33,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174945530] [2022-11-02 20:59:33,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:33,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:33,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:33,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:33,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:33,930 INFO L87 Difference]: Start difference. First operand 219 states and 310 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 20:59:34,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:34,373 INFO L93 Difference]: Finished difference Result 976 states and 1423 transitions. [2022-11-02 20:59:34,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:59:34,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:34,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:34,376 INFO L225 Difference]: With dead ends: 976 [2022-11-02 20:59:34,376 INFO L226 Difference]: Without dead ends: 807 [2022-11-02 20:59:34,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:59:34,377 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 1725 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:34,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1725 Valid, 2026 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:59:34,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-11-02 20:59:34,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 225. [2022-11-02 20:59:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.4196428571428572) internal successors, (318), 224 states have internal predecessors, (318), 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 20:59:34,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 318 transitions. [2022-11-02 20:59:34,389 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 318 transitions. Word has length 172 [2022-11-02 20:59:34,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:34,389 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 318 transitions. [2022-11-02 20:59:34,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 20:59:34,390 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 318 transitions. [2022-11-02 20:59:34,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:34,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:34,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:34,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:34,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:34,610 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:34,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:34,611 INFO L85 PathProgramCache]: Analyzing trace with hash 42074547, now seen corresponding path program 1 times [2022-11-02 20:59:34,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:34,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935935715] [2022-11-02 20:59:34,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:34,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:34,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:34,613 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:34,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:59:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:35,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:35,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:35,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:35,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:35,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:35,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935935715] [2022-11-02 20:59:35,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935935715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:35,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:35,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:59:35,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555229862] [2022-11-02 20:59:35,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:35,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:59:35,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:35,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:59:35,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:35,414 INFO L87 Difference]: Start difference. First operand 225 states and 318 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:35,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:35,925 INFO L93 Difference]: Finished difference Result 1018 states and 1484 transitions. [2022-11-02 20:59:35,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:59:35,926 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:35,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:35,928 INFO L225 Difference]: With dead ends: 1018 [2022-11-02 20:59:35,928 INFO L226 Difference]: Without dead ends: 849 [2022-11-02 20:59:35,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:59:35,930 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 2012 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:35,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2012 Valid, 2478 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:59:35,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-11-02 20:59:35,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 229. [2022-11-02 20:59:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.4166666666666667) internal successors, (323), 228 states have internal predecessors, (323), 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 20:59:35,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 323 transitions. [2022-11-02 20:59:35,941 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 323 transitions. Word has length 172 [2022-11-02 20:59:35,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:35,941 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 323 transitions. [2022-11-02 20:59:35,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:35,942 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 323 transitions. [2022-11-02 20:59:35,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:35,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:35,944 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:35,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:36,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:36,158 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:36,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:36,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1679928139, now seen corresponding path program 1 times [2022-11-02 20:59:36,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:36,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054316055] [2022-11-02 20:59:36,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:36,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:36,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:36,161 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:36,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:59:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:36,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:59:36,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:36,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:36,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:36,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054316055] [2022-11-02 20:59:36,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054316055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:36,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:36,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:59:36,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610860296] [2022-11-02 20:59:36,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:36,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:59:36,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:36,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:59:36,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:36,761 INFO L87 Difference]: Start difference. First operand 229 states and 323 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 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 20:59:36,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:36,858 INFO L93 Difference]: Finished difference Result 798 states and 1155 transitions. [2022-11-02 20:59:36,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:59:36,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:36,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:36,861 INFO L225 Difference]: With dead ends: 798 [2022-11-02 20:59:36,861 INFO L226 Difference]: Without dead ends: 629 [2022-11-02 20:59:36,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:36,865 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 1167 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:36,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 1105 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:36,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-11-02 20:59:36,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 291. [2022-11-02 20:59:36,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.4068965517241379) internal successors, (408), 290 states have internal predecessors, (408), 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 20:59:36,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 408 transitions. [2022-11-02 20:59:36,881 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 408 transitions. Word has length 172 [2022-11-02 20:59:36,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:36,882 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 408 transitions. [2022-11-02 20:59:36,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 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 20:59:36,882 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 408 transitions. [2022-11-02 20:59:36,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:36,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:36,884 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:36,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:37,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:37,089 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:37,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:37,090 INFO L85 PathProgramCache]: Analyzing trace with hash 249004087, now seen corresponding path program 1 times [2022-11-02 20:59:37,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:37,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345178990] [2022-11-02 20:59:37,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:37,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:37,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:37,092 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:37,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:59:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:37,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:37,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:37,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:37,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:37,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345178990] [2022-11-02 20:59:37,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345178990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:37,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:37,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:59:37,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143825865] [2022-11-02 20:59:37,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:37,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:59:37,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:37,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:59:37,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:37,841 INFO L87 Difference]: Start difference. First operand 291 states and 408 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:38,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:38,376 INFO L93 Difference]: Finished difference Result 1209 states and 1757 transitions. [2022-11-02 20:59:38,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:59:38,376 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:38,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:38,380 INFO L225 Difference]: With dead ends: 1209 [2022-11-02 20:59:38,380 INFO L226 Difference]: Without dead ends: 1008 [2022-11-02 20:59:38,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:59:38,382 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 1999 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:38,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1999 Valid, 2480 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:59:38,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-11-02 20:59:38,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 297. [2022-11-02 20:59:38,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.402027027027027) internal successors, (415), 296 states have internal predecessors, (415), 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 20:59:38,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 415 transitions. [2022-11-02 20:59:38,395 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 415 transitions. Word has length 172 [2022-11-02 20:59:38,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:38,396 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 415 transitions. [2022-11-02 20:59:38,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:38,396 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 415 transitions. [2022-11-02 20:59:38,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:38,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:38,398 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:38,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:38,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:38,616 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:38,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:38,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1976149049, now seen corresponding path program 1 times [2022-11-02 20:59:38,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:38,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308885621] [2022-11-02 20:59:38,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:38,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:38,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:38,619 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:38,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:59:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:39,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:39,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:39,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:39,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:39,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:39,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308885621] [2022-11-02 20:59:39,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308885621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:39,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:39,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:59:39,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129632661] [2022-11-02 20:59:39,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:39,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:59:39,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:39,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:59:39,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:39,401 INFO L87 Difference]: Start difference. First operand 297 states and 415 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:39,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:39,889 INFO L93 Difference]: Finished difference Result 1210 states and 1757 transitions. [2022-11-02 20:59:39,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:59:39,889 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:39,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:39,894 INFO L225 Difference]: With dead ends: 1210 [2022-11-02 20:59:39,894 INFO L226 Difference]: Without dead ends: 1009 [2022-11-02 20:59:39,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:59:39,896 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 1986 mSDsluCounter, 2175 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1986 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:39,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1986 Valid, 2474 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:59:39,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-11-02 20:59:39,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 301. [2022-11-02 20:59:39,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.4) internal successors, (420), 300 states have internal predecessors, (420), 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 20:59:39,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 420 transitions. [2022-11-02 20:59:39,909 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 420 transitions. Word has length 172 [2022-11-02 20:59:39,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:39,910 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 420 transitions. [2022-11-02 20:59:39,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:39,910 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 420 transitions. [2022-11-02 20:59:39,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:39,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:39,912 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:39,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:40,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:40,126 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:40,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:40,127 INFO L85 PathProgramCache]: Analyzing trace with hash 937564475, now seen corresponding path program 1 times [2022-11-02 20:59:40,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:40,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713358146] [2022-11-02 20:59:40,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:40,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:40,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:40,129 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:40,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:59:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:40,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:40,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:40,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:40,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:40,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:40,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713358146] [2022-11-02 20:59:40,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713358146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:40,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:40,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:59:40,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689845740] [2022-11-02 20:59:40,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:40,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:59:40,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:40,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:59:40,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:40,859 INFO L87 Difference]: Start difference. First operand 301 states and 420 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:41,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:41,377 INFO L93 Difference]: Finished difference Result 1210 states and 1756 transitions. [2022-11-02 20:59:41,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:59:41,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:41,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:41,381 INFO L225 Difference]: With dead ends: 1210 [2022-11-02 20:59:41,381 INFO L226 Difference]: Without dead ends: 1009 [2022-11-02 20:59:41,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:59:41,383 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 1973 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:41,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1973 Valid, 2476 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:59:41,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-11-02 20:59:41,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 305. [2022-11-02 20:59:41,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.3980263157894737) internal successors, (425), 304 states have internal predecessors, (425), 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 20:59:41,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 425 transitions. [2022-11-02 20:59:41,396 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 425 transitions. Word has length 172 [2022-11-02 20:59:41,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:41,397 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 425 transitions. [2022-11-02 20:59:41,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:41,397 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 425 transitions. [2022-11-02 20:59:41,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:41,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:41,398 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:41,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:41,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:41,616 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:41,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:41,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1056005949, now seen corresponding path program 1 times [2022-11-02 20:59:41,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:41,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749032772] [2022-11-02 20:59:41,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:41,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:41,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:41,618 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:41,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:59:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:42,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:42,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:42,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:42,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749032772] [2022-11-02 20:59:42,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749032772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:42,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:42,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:59:42,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328405861] [2022-11-02 20:59:42,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:42,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:59:42,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:42,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:59:42,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:42,380 INFO L87 Difference]: Start difference. First operand 305 states and 425 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:42,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:42,882 INFO L93 Difference]: Finished difference Result 1210 states and 1755 transitions. [2022-11-02 20:59:42,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:59:42,883 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:42,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:42,885 INFO L225 Difference]: With dead ends: 1210 [2022-11-02 20:59:42,885 INFO L226 Difference]: Without dead ends: 1009 [2022-11-02 20:59:42,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:59:42,886 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 1950 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1950 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:42,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1950 Valid, 2469 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:59:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-11-02 20:59:42,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 313. [2022-11-02 20:59:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.3974358974358974) internal successors, (436), 312 states have internal predecessors, (436), 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 20:59:42,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 436 transitions. [2022-11-02 20:59:42,900 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 436 transitions. Word has length 172 [2022-11-02 20:59:42,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:42,900 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 436 transitions. [2022-11-02 20:59:42,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:42,901 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 436 transitions. [2022-11-02 20:59:42,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:42,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:42,902 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:42,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-11-02 20:59:43,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:43,120 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:43,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:43,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1637890241, now seen corresponding path program 1 times [2022-11-02 20:59:43,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:43,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749930100] [2022-11-02 20:59:43,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:43,121 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:43,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:43,122 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:43,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:59:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:43,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:43,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:43,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:43,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:43,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:43,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749930100] [2022-11-02 20:59:43,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749930100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:43,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:43,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:59:43,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428615745] [2022-11-02 20:59:43,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:43,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:43,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:43,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:43,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:43,848 INFO L87 Difference]: Start difference. First operand 313 states and 436 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 20:59:44,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:44,273 INFO L93 Difference]: Finished difference Result 1110 states and 1606 transitions. [2022-11-02 20:59:44,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:59:44,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:44,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:44,277 INFO L225 Difference]: With dead ends: 1110 [2022-11-02 20:59:44,277 INFO L226 Difference]: Without dead ends: 909 [2022-11-02 20:59:44,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:59:44,279 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 1603 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:44,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 2014 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:59:44,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-11-02 20:59:44,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 315. [2022-11-02 20:59:44,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.394904458598726) internal successors, (438), 314 states have internal predecessors, (438), 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 20:59:44,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 438 transitions. [2022-11-02 20:59:44,292 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 438 transitions. Word has length 172 [2022-11-02 20:59:44,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:44,292 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 438 transitions. [2022-11-02 20:59:44,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 20:59:44,293 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 438 transitions. [2022-11-02 20:59:44,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:44,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:44,294 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:44,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:44,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:44,512 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:44,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:44,512 INFO L85 PathProgramCache]: Analyzing trace with hash -286505023, now seen corresponding path program 1 times [2022-11-02 20:59:44,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:44,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944889853] [2022-11-02 20:59:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:44,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:44,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:44,515 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:44,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:59:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:44,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:44,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:45,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:45,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:45,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:45,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944889853] [2022-11-02 20:59:45,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944889853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:45,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:45,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:59:45,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580784793] [2022-11-02 20:59:45,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:45,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:59:45,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:45,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:59:45,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:45,379 INFO L87 Difference]: Start difference. First operand 315 states and 438 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:45,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:45,590 INFO L93 Difference]: Finished difference Result 875 states and 1261 transitions. [2022-11-02 20:59:45,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:59:45,591 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:45,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:45,593 INFO L225 Difference]: With dead ends: 875 [2022-11-02 20:59:45,593 INFO L226 Difference]: Without dead ends: 674 [2022-11-02 20:59:45,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:59:45,594 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 834 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:45,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 2467 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 77 Unchecked, 0.1s Time] [2022-11-02 20:59:45,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-11-02 20:59:45,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 317. [2022-11-02 20:59:45,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.3924050632911393) internal successors, (440), 316 states have internal predecessors, (440), 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 20:59:45,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 440 transitions. [2022-11-02 20:59:45,606 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 440 transitions. Word has length 172 [2022-11-02 20:59:45,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:45,607 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 440 transitions. [2022-11-02 20:59:45,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:45,607 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 440 transitions. [2022-11-02 20:59:45,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:45,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:45,608 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:45,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:45,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:45,822 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:45,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:45,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1170014013, now seen corresponding path program 1 times [2022-11-02 20:59:45,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:45,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851180053] [2022-11-02 20:59:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:45,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:45,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:45,825 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:45,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:59:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:46,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:46,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:46,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:46,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851180053] [2022-11-02 20:59:46,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851180053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:46,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:46,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:59:46,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140268184] [2022-11-02 20:59:46,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:46,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:46,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:46,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:46,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:46,798 INFO L87 Difference]: Start difference. First operand 317 states and 440 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 20:59:46,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:46,958 INFO L93 Difference]: Finished difference Result 812 states and 1167 transitions. [2022-11-02 20:59:46,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:59:46,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:46,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:46,961 INFO L225 Difference]: With dead ends: 812 [2022-11-02 20:59:46,961 INFO L226 Difference]: Without dead ends: 611 [2022-11-02 20:59:46,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:46,962 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 536 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:46,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 1685 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2022-11-02 20:59:46,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-11-02 20:59:46,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 319. [2022-11-02 20:59:46,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.389937106918239) internal successors, (442), 318 states have internal predecessors, (442), 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 20:59:46,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 442 transitions. [2022-11-02 20:59:46,973 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 442 transitions. Word has length 172 [2022-11-02 20:59:46,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:46,974 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 442 transitions. [2022-11-02 20:59:46,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 20:59:46,974 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 442 transitions. [2022-11-02 20:59:46,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:46,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:46,975 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:46,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:47,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:47,190 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:47,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:47,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1184371269, now seen corresponding path program 1 times [2022-11-02 20:59:47,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:47,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118317860] [2022-11-02 20:59:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:47,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:47,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:47,193 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:47,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:59:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:47,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:47,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:48,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:48,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:48,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:48,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118317860] [2022-11-02 20:59:48,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118317860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:48,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:48,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:59:48,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851377584] [2022-11-02 20:59:48,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:48,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:48,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:48,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:48,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:48,128 INFO L87 Difference]: Start difference. First operand 319 states and 442 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 20:59:48,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:48,303 INFO L93 Difference]: Finished difference Result 812 states and 1166 transitions. [2022-11-02 20:59:48,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:59:48,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:48,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:48,306 INFO L225 Difference]: With dead ends: 812 [2022-11-02 20:59:48,306 INFO L226 Difference]: Without dead ends: 611 [2022-11-02 20:59:48,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:48,307 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 529 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:48,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 2009 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 70 Unchecked, 0.1s Time] [2022-11-02 20:59:48,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-11-02 20:59:48,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 321. [2022-11-02 20:59:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.3875) internal successors, (444), 320 states have internal predecessors, (444), 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 20:59:48,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 444 transitions. [2022-11-02 20:59:48,319 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 444 transitions. Word has length 172 [2022-11-02 20:59:48,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:48,320 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 444 transitions. [2022-11-02 20:59:48,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 20:59:48,320 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 444 transitions. [2022-11-02 20:59:48,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:48,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:48,321 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:48,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-02 20:59:48,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:48,535 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:48,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:48,535 INFO L85 PathProgramCache]: Analyzing trace with hash 413637703, now seen corresponding path program 1 times [2022-11-02 20:59:48,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:48,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502089728] [2022-11-02 20:59:48,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:48,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:48,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:48,537 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:48,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:59:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:48,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 20:59:48,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:53,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:53,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:53,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502089728] [2022-11-02 20:59:53,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502089728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:53,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:53,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 20:59:53,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936884008] [2022-11-02 20:59:53,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:53,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:59:53,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:53,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:59:53,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=337, Unknown=1, NotChecked=0, Total=380 [2022-11-02 20:59:53,998 INFO L87 Difference]: Start difference. First operand 321 states and 444 transitions. Second operand has 20 states, 20 states have (on average 8.6) internal successors, (172), 20 states have internal predecessors, (172), 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 20:59:54,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:54,048 INFO L93 Difference]: Finished difference Result 635 states and 879 transitions. [2022-11-02 20:59:54,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:59:54,049 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.6) internal successors, (172), 20 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:54,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:54,051 INFO L225 Difference]: With dead ends: 635 [2022-11-02 20:59:54,051 INFO L226 Difference]: Without dead ends: 434 [2022-11-02 20:59:54,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=42, Invalid=337, Unknown=1, NotChecked=0, Total=380 [2022-11-02 20:59:54,052 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 30 mSDsluCounter, 3404 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3633 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 297 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:54,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3633 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 297 Unchecked, 0.0s Time] [2022-11-02 20:59:54,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-02 20:59:54,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 431. [2022-11-02 20:59:54,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 1.3465116279069766) internal successors, (579), 430 states have internal predecessors, (579), 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 20:59:54,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 579 transitions. [2022-11-02 20:59:54,064 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 579 transitions. Word has length 172 [2022-11-02 20:59:54,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:54,065 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 579 transitions. [2022-11-02 20:59:54,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.6) internal successors, (172), 20 states have internal predecessors, (172), 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 20:59:54,065 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 579 transitions. [2022-11-02 20:59:54,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:54,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:54,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:54,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-02 20:59:54,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:54,284 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:54,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:54,284 INFO L85 PathProgramCache]: Analyzing trace with hash 999913925, now seen corresponding path program 1 times [2022-11-02 20:59:54,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:54,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642327572] [2022-11-02 20:59:54,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:54,286 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:54,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:54,287 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:54,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:59:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:54,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:54,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:55,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:55,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:55,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642327572] [2022-11-02 20:59:55,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642327572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:55,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:55,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:59:55,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977603912] [2022-11-02 20:59:55,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:55,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:59:55,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:55,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:59:55,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:55,185 INFO L87 Difference]: Start difference. First operand 431 states and 579 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:55,778 INFO L93 Difference]: Finished difference Result 1320 states and 1885 transitions. [2022-11-02 20:59:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:59:55,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:55,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:55,783 INFO L225 Difference]: With dead ends: 1320 [2022-11-02 20:59:55,783 INFO L226 Difference]: Without dead ends: 1119 [2022-11-02 20:59:55,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:59:55,785 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 1890 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:55,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 2480 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:59:55,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2022-11-02 20:59:55,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 441. [2022-11-02 20:59:55,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 1.3477272727272727) internal successors, (593), 440 states have internal predecessors, (593), 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 20:59:55,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 593 transitions. [2022-11-02 20:59:55,803 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 593 transitions. Word has length 172 [2022-11-02 20:59:55,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:55,804 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 593 transitions. [2022-11-02 20:59:55,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:55,804 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 593 transitions. [2022-11-02 20:59:55,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:55,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:55,806 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:55,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:56,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:56,026 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:56,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:56,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1240153671, now seen corresponding path program 1 times [2022-11-02 20:59:56,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:56,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267824750] [2022-11-02 20:59:56,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:56,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:56,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:56,030 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:56,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:59:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:56,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:56,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:56,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:56,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:56,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:56,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267824750] [2022-11-02 20:59:56,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267824750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:56,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:56,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:59:56,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900018887] [2022-11-02 20:59:56,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:56,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:59:56,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:56,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:59:56,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:56,954 INFO L87 Difference]: Start difference. First operand 441 states and 593 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:57,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:57,487 INFO L93 Difference]: Finished difference Result 1318 states and 1881 transitions. [2022-11-02 20:59:57,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:59:57,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:57,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:57,491 INFO L225 Difference]: With dead ends: 1318 [2022-11-02 20:59:57,491 INFO L226 Difference]: Without dead ends: 1117 [2022-11-02 20:59:57,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:59:57,492 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 1869 mSDsluCounter, 2122 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:57,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1869 Valid, 2475 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:59:57,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-11-02 20:59:57,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 447. [2022-11-02 20:59:57,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.3475336322869955) internal successors, (601), 446 states have internal predecessors, (601), 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 20:59:57,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 601 transitions. [2022-11-02 20:59:57,508 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 601 transitions. Word has length 172 [2022-11-02 20:59:57,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:57,509 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 601 transitions. [2022-11-02 20:59:57,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:57,509 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 601 transitions. [2022-11-02 20:59:57,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:57,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:57,511 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:57,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:57,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:57,726 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:57,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:57,727 INFO L85 PathProgramCache]: Analyzing trace with hash -670888887, now seen corresponding path program 1 times [2022-11-02 20:59:57,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:57,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027535441] [2022-11-02 20:59:57,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:57,728 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:57,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:57,731 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:57,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 20:59:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:58,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:58,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:58,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:58,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:58,672 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:58,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027535441] [2022-11-02 20:59:58,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027535441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:58,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:58,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:59:58,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759851359] [2022-11-02 20:59:58,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:58,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:59:58,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:58,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:59:58,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:58,675 INFO L87 Difference]: Start difference. First operand 447 states and 601 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:59,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:59,243 INFO L93 Difference]: Finished difference Result 1308 states and 1865 transitions. [2022-11-02 20:59:59,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:59:59,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 20:59:59,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:59,246 INFO L225 Difference]: With dead ends: 1308 [2022-11-02 20:59:59,246 INFO L226 Difference]: Without dead ends: 1107 [2022-11-02 20:59:59,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:59:59,247 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 1834 mSDsluCounter, 2117 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:59,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 2479 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:59:59,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-11-02 20:59:59,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 453. [2022-11-02 20:59:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.3473451327433628) internal successors, (609), 452 states have internal predecessors, (609), 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 20:59:59,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 609 transitions. [2022-11-02 20:59:59,263 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 609 transitions. Word has length 172 [2022-11-02 20:59:59,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:59,263 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 609 transitions. [2022-11-02 20:59:59,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 20:59:59,264 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 609 transitions. [2022-11-02 20:59:59,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:59:59,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:59,265 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:59,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:59,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:59,483 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:59,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:59,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1887042613, now seen corresponding path program 1 times [2022-11-02 20:59:59,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:59,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933486623] [2022-11-02 20:59:59,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:59,485 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:59,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:59,486 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:59,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 20:59:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:59,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:59:59,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:00,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:00,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:00,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933486623] [2022-11-02 21:00:00,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933486623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:00,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:00,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:00,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773560227] [2022-11-02 21:00:00,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:00,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:00,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:00,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:00,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:00,412 INFO L87 Difference]: Start difference. First operand 453 states and 609 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:00,949 INFO L93 Difference]: Finished difference Result 1318 states and 1879 transitions. [2022-11-02 21:00:00,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:00:00,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:00,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:00,952 INFO L225 Difference]: With dead ends: 1318 [2022-11-02 21:00:00,952 INFO L226 Difference]: Without dead ends: 1117 [2022-11-02 21:00:00,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:00,953 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1833 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:00,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 2477 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:00,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-11-02 21:00:00,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 459. [2022-11-02 21:00:00,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.3471615720524017) internal successors, (617), 458 states have internal predecessors, (617), 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 21:00:00,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 617 transitions. [2022-11-02 21:00:00,968 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 617 transitions. Word has length 172 [2022-11-02 21:00:00,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:00,969 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 617 transitions. [2022-11-02 21:00:00,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:00,969 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 617 transitions. [2022-11-02 21:00:00,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:00,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:00,971 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:00,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:01,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:01,191 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:01,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:01,191 INFO L85 PathProgramCache]: Analyzing trace with hash 74532045, now seen corresponding path program 1 times [2022-11-02 21:00:01,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:01,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621197249] [2022-11-02 21:00:01,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:01,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:01,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:01,193 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:01,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 21:00:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:01,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:02,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:02,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:02,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:02,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621197249] [2022-11-02 21:00:02,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621197249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:02,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:02,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:02,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112119509] [2022-11-02 21:00:02,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:02,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:02,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:02,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:02,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:02,097 INFO L87 Difference]: Start difference. First operand 459 states and 617 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:02,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:02,626 INFO L93 Difference]: Finished difference Result 1314 states and 1872 transitions. [2022-11-02 21:00:02,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:00:02,627 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:02,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:02,630 INFO L225 Difference]: With dead ends: 1314 [2022-11-02 21:00:02,630 INFO L226 Difference]: Without dead ends: 1113 [2022-11-02 21:00:02,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:02,632 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 1813 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:02,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1813 Valid, 2477 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:02,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2022-11-02 21:00:02,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 463. [2022-11-02 21:00:02,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.3463203463203464) internal successors, (622), 462 states have internal predecessors, (622), 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 21:00:02,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 622 transitions. [2022-11-02 21:00:02,648 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 622 transitions. Word has length 172 [2022-11-02 21:00:02,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:02,649 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 622 transitions. [2022-11-02 21:00:02,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:02,649 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 622 transitions. [2022-11-02 21:00:02,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:02,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:02,651 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:02,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-02 21:00:02,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:02,870 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:02,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:02,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1335449295, now seen corresponding path program 1 times [2022-11-02 21:00:02,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:02,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247862690] [2022-11-02 21:00:02,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:02,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:02,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:02,873 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:02,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 21:00:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:03,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:00:03,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:03,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:03,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:03,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247862690] [2022-11-02 21:00:03,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247862690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:03,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:03,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:03,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100043313] [2022-11-02 21:00:03,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:03,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:03,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:03,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:03,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:03,919 INFO L87 Difference]: Start difference. First operand 463 states and 622 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:00:03,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:03,960 INFO L93 Difference]: Finished difference Result 666 states and 921 transitions. [2022-11-02 21:00:03,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:00:03,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:03,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:03,963 INFO L225 Difference]: With dead ends: 666 [2022-11-02 21:00:03,963 INFO L226 Difference]: Without dead ends: 465 [2022-11-02 21:00:03,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:03,965 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 134 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:03,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1361 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2022-11-02 21:00:03,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-11-02 21:00:03,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2022-11-02 21:00:03,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 1.3448275862068966) internal successors, (624), 464 states have internal predecessors, (624), 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 21:00:03,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 624 transitions. [2022-11-02 21:00:03,979 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 624 transitions. Word has length 172 [2022-11-02 21:00:03,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:03,980 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 624 transitions. [2022-11-02 21:00:03,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:00:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 624 transitions. [2022-11-02 21:00:03,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:03,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:03,982 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:04,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:04,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:04,200 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:04,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:04,201 INFO L85 PathProgramCache]: Analyzing trace with hash -51336115, now seen corresponding path program 1 times [2022-11-02 21:00:04,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:04,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215021993] [2022-11-02 21:00:04,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:04,202 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:04,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:04,203 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:04,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 21:00:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:04,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:04,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:05,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:05,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:05,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215021993] [2022-11-02 21:00:05,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215021993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:05,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:05,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:05,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627640721] [2022-11-02 21:00:05,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:05,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:05,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:05,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:05,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:05,129 INFO L87 Difference]: Start difference. First operand 465 states and 624 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:05,649 INFO L93 Difference]: Finished difference Result 1320 states and 1879 transitions. [2022-11-02 21:00:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:00:05,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:05,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:05,655 INFO L225 Difference]: With dead ends: 1320 [2022-11-02 21:00:05,655 INFO L226 Difference]: Without dead ends: 1119 [2022-11-02 21:00:05,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:05,656 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 1806 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1806 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:05,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1806 Valid, 2481 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:05,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2022-11-02 21:00:05,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 467. [2022-11-02 21:00:05,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 1.3433476394849786) internal successors, (626), 466 states have internal predecessors, (626), 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 21:00:05,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 626 transitions. [2022-11-02 21:00:05,672 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 626 transitions. Word has length 172 [2022-11-02 21:00:05,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:05,673 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 626 transitions. [2022-11-02 21:00:05,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:05,673 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 626 transitions. [2022-11-02 21:00:05,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:05,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:05,675 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:05,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:05,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:05,883 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:05,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:05,883 INFO L85 PathProgramCache]: Analyzing trace with hash 392564559, now seen corresponding path program 1 times [2022-11-02 21:00:05,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:05,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932496458] [2022-11-02 21:00:05,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:05,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:05,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:05,885 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:05,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 21:00:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:06,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:06,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:06,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:06,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:06,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:06,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932496458] [2022-11-02 21:00:06,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932496458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:06,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:06,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:06,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509126657] [2022-11-02 21:00:06,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:06,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:06,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:06,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:06,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:06,795 INFO L87 Difference]: Start difference. First operand 467 states and 626 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:07,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:07,319 INFO L93 Difference]: Finished difference Result 1318 states and 1875 transitions. [2022-11-02 21:00:07,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:00:07,323 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:07,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:07,327 INFO L225 Difference]: With dead ends: 1318 [2022-11-02 21:00:07,327 INFO L226 Difference]: Without dead ends: 1117 [2022-11-02 21:00:07,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:07,329 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1794 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1794 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:07,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1794 Valid, 2481 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:07,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-11-02 21:00:07,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 469. [2022-11-02 21:00:07,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 1.3418803418803418) internal successors, (628), 468 states have internal predecessors, (628), 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 21:00:07,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 628 transitions. [2022-11-02 21:00:07,347 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 628 transitions. Word has length 172 [2022-11-02 21:00:07,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:07,348 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 628 transitions. [2022-11-02 21:00:07,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:07,349 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 628 transitions. [2022-11-02 21:00:07,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:07,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:07,350 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:07,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:07,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:07,569 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:07,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:07,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1636021551, now seen corresponding path program 1 times [2022-11-02 21:00:07,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:07,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153178846] [2022-11-02 21:00:07,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:07,571 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:07,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:07,572 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:07,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 21:00:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:08,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:08,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:08,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:08,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:08,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:08,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153178846] [2022-11-02 21:00:08,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153178846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:08,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:08,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:08,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723617999] [2022-11-02 21:00:08,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:08,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:08,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:08,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:08,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:08,579 INFO L87 Difference]: Start difference. First operand 469 states and 628 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:09,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:09,128 INFO L93 Difference]: Finished difference Result 1306 states and 1856 transitions. [2022-11-02 21:00:09,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:00:09,129 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:09,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:09,132 INFO L225 Difference]: With dead ends: 1306 [2022-11-02 21:00:09,133 INFO L226 Difference]: Without dead ends: 1105 [2022-11-02 21:00:09,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:09,134 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 1765 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:09,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1765 Valid, 2476 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:09,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-11-02 21:00:09,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 471. [2022-11-02 21:00:09,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.3404255319148937) internal successors, (630), 470 states have internal predecessors, (630), 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 21:00:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 630 transitions. [2022-11-02 21:00:09,154 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 630 transitions. Word has length 172 [2022-11-02 21:00:09,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:09,155 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 630 transitions. [2022-11-02 21:00:09,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:09,155 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 630 transitions. [2022-11-02 21:00:09,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:09,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:09,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:09,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:09,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:09,375 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:09,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:09,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1651540269, now seen corresponding path program 1 times [2022-11-02 21:00:09,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:09,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733190764] [2022-11-02 21:00:09,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:09,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:09,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:09,378 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:09,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 21:00:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:09,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 21:00:09,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:10,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:10,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:10,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733190764] [2022-11-02 21:00:10,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733190764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:10,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:10,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:10,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112196124] [2022-11-02 21:00:10,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:10,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:10,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:10,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:10,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:10,663 INFO L87 Difference]: Start difference. First operand 471 states and 630 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:11,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:11,341 INFO L93 Difference]: Finished difference Result 1288 states and 1828 transitions. [2022-11-02 21:00:11,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:00:11,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:11,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:11,343 INFO L225 Difference]: With dead ends: 1288 [2022-11-02 21:00:11,344 INFO L226 Difference]: Without dead ends: 1087 [2022-11-02 21:00:11,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:11,345 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1718 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:11,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 2377 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:00:11,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2022-11-02 21:00:11,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 473. [2022-11-02 21:00:11,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.3389830508474576) internal successors, (632), 472 states have internal predecessors, (632), 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 21:00:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 632 transitions. [2022-11-02 21:00:11,375 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 632 transitions. Word has length 172 [2022-11-02 21:00:11,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:11,376 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 632 transitions. [2022-11-02 21:00:11,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:11,376 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 632 transitions. [2022-11-02 21:00:11,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:11,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:11,378 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:11,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:11,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:11,595 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:11,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:11,595 INFO L85 PathProgramCache]: Analyzing trace with hash -2004628651, now seen corresponding path program 1 times [2022-11-02 21:00:11,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:11,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829419866] [2022-11-02 21:00:11,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:11,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:11,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:11,597 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:11,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 21:00:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:12,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:12,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:12,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:12,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:12,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829419866] [2022-11-02 21:00:12,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829419866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:12,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:12,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:12,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579812506] [2022-11-02 21:00:12,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:12,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:12,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:12,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:12,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:12,658 INFO L87 Difference]: Start difference. First operand 473 states and 632 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:13,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:13,160 INFO L93 Difference]: Finished difference Result 1320 states and 1875 transitions. [2022-11-02 21:00:13,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:00:13,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:13,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:13,163 INFO L225 Difference]: With dead ends: 1320 [2022-11-02 21:00:13,163 INFO L226 Difference]: Without dead ends: 1119 [2022-11-02 21:00:13,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:13,164 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1770 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:13,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1770 Valid, 2476 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:13,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2022-11-02 21:00:13,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 477. [2022-11-02 21:00:13,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.338235294117647) internal successors, (637), 476 states have internal predecessors, (637), 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 21:00:13,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 637 transitions. [2022-11-02 21:00:13,180 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 637 transitions. Word has length 172 [2022-11-02 21:00:13,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:13,181 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 637 transitions. [2022-11-02 21:00:13,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:13,181 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 637 transitions. [2022-11-02 21:00:13,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:13,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:13,183 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:13,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:13,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:13,398 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:13,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:13,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1392945367, now seen corresponding path program 1 times [2022-11-02 21:00:13,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:13,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606661711] [2022-11-02 21:00:13,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:13,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:13,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:13,401 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:13,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 21:00:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:13,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:14,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:14,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:14,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:14,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606661711] [2022-11-02 21:00:14,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606661711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:14,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:14,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:14,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984928105] [2022-11-02 21:00:14,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:14,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:14,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:14,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:14,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:14,323 INFO L87 Difference]: Start difference. First operand 477 states and 637 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:14,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:14,813 INFO L93 Difference]: Finished difference Result 1314 states and 1865 transitions. [2022-11-02 21:00:14,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:00:14,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:14,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:14,817 INFO L225 Difference]: With dead ends: 1314 [2022-11-02 21:00:14,817 INFO L226 Difference]: Without dead ends: 1113 [2022-11-02 21:00:14,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:14,819 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 1733 mSDsluCounter, 2062 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:14,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 2475 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:14,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2022-11-02 21:00:14,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 487. [2022-11-02 21:00:14,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 1.3395061728395061) internal successors, (651), 486 states have internal predecessors, (651), 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 21:00:14,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 651 transitions. [2022-11-02 21:00:14,836 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 651 transitions. Word has length 172 [2022-11-02 21:00:14,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:14,837 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 651 transitions. [2022-11-02 21:00:14,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:14,837 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 651 transitions. [2022-11-02 21:00:14,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:14,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:14,839 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:14,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:15,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:15,054 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:15,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:15,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1320558809, now seen corresponding path program 1 times [2022-11-02 21:00:15,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:15,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93809381] [2022-11-02 21:00:15,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:15,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:15,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:15,057 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:15,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 21:00:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:15,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:15,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:15,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:15,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:15,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93809381] [2022-11-02 21:00:15,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93809381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:15,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:15,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:15,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777480749] [2022-11-02 21:00:15,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:15,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:15,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:16,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:16,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:16,000 INFO L87 Difference]: Start difference. First operand 487 states and 651 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:16,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:16,528 INFO L93 Difference]: Finished difference Result 1308 states and 1855 transitions. [2022-11-02 21:00:16,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:00:16,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:16,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:16,532 INFO L225 Difference]: With dead ends: 1308 [2022-11-02 21:00:16,533 INFO L226 Difference]: Without dead ends: 1107 [2022-11-02 21:00:16,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:16,534 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1714 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:16,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1714 Valid, 2475 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:16,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-11-02 21:00:16,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 489. [2022-11-02 21:00:16,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.3381147540983607) internal successors, (653), 488 states have internal predecessors, (653), 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 21:00:16,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 653 transitions. [2022-11-02 21:00:16,551 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 653 transitions. Word has length 172 [2022-11-02 21:00:16,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:16,552 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 653 transitions. [2022-11-02 21:00:16,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:16,552 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 653 transitions. [2022-11-02 21:00:16,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:16,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:16,554 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:16,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:16,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:16,773 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:16,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:16,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2022158683, now seen corresponding path program 1 times [2022-11-02 21:00:16,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:16,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227422803] [2022-11-02 21:00:16,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:16,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:16,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:16,777 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:16,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 21:00:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:17,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:17,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:17,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:17,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:17,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227422803] [2022-11-02 21:00:17,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227422803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:17,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:17,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:17,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101015063] [2022-11-02 21:00:17,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:17,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:17,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:17,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:17,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:17,754 INFO L87 Difference]: Start difference. First operand 489 states and 653 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:18,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:18,338 INFO L93 Difference]: Finished difference Result 1318 states and 1869 transitions. [2022-11-02 21:00:18,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:00:18,338 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:18,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:18,341 INFO L225 Difference]: With dead ends: 1318 [2022-11-02 21:00:18,341 INFO L226 Difference]: Without dead ends: 1117 [2022-11-02 21:00:18,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:18,352 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1713 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:18,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 2473 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:18,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-11-02 21:00:18,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 495. [2022-11-02 21:00:18,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.3380566801619433) internal successors, (661), 494 states have internal predecessors, (661), 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 21:00:18,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 661 transitions. [2022-11-02 21:00:18,373 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 661 transitions. Word has length 172 [2022-11-02 21:00:18,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:18,373 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 661 transitions. [2022-11-02 21:00:18,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:18,374 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 661 transitions. [2022-11-02 21:00:18,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:18,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:18,376 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:18,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:18,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:18,590 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:18,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:18,591 INFO L85 PathProgramCache]: Analyzing trace with hash -2132260003, now seen corresponding path program 1 times [2022-11-02 21:00:18,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:18,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499556017] [2022-11-02 21:00:18,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:18,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:18,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:18,594 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:18,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 21:00:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:19,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:19,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:19,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:19,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:19,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499556017] [2022-11-02 21:00:19,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499556017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:19,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:19,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:19,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115539127] [2022-11-02 21:00:19,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:19,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:19,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:19,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:19,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:19,350 INFO L87 Difference]: Start difference. First operand 495 states and 661 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 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 21:00:19,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:19,496 INFO L93 Difference]: Finished difference Result 1447 states and 2016 transitions. [2022-11-02 21:00:19,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:19,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:19,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:19,499 INFO L225 Difference]: With dead ends: 1447 [2022-11-02 21:00:19,499 INFO L226 Difference]: Without dead ends: 1246 [2022-11-02 21:00:19,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:19,501 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 1024 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:19,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 1198 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:00:19,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-11-02 21:00:19,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 873. [2022-11-02 21:00:19,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.3405963302752293) internal successors, (1169), 872 states have internal predecessors, (1169), 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 21:00:19,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1169 transitions. [2022-11-02 21:00:19,523 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1169 transitions. Word has length 172 [2022-11-02 21:00:19,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:19,524 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1169 transitions. [2022-11-02 21:00:19,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 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 21:00:19,524 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1169 transitions. [2022-11-02 21:00:19,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:19,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:19,527 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:19,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-02 21:00:19,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:19,746 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:19,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:19,746 INFO L85 PathProgramCache]: Analyzing trace with hash -326821669, now seen corresponding path program 1 times [2022-11-02 21:00:19,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:19,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394550731] [2022-11-02 21:00:19,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:19,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:19,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:19,749 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:19,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 21:00:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:20,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:20,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:20,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:20,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:20,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394550731] [2022-11-02 21:00:20,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394550731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:20,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:20,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:20,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859180339] [2022-11-02 21:00:20,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:20,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:20,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:20,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:20,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:20,950 INFO L87 Difference]: Start difference. First operand 873 states and 1169 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:21,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:21,484 INFO L93 Difference]: Finished difference Result 2279 states and 3242 transitions. [2022-11-02 21:00:21,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:00:21,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:21,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:21,487 INFO L225 Difference]: With dead ends: 2279 [2022-11-02 21:00:21,488 INFO L226 Difference]: Without dead ends: 1930 [2022-11-02 21:00:21,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:21,489 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 1693 mSDsluCounter, 2042 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1693 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:21,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1693 Valid, 2473 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:21,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2022-11-02 21:00:21,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 879. [2022-11-02 21:00:21,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 878 states have (on average 1.3394077448747153) internal successors, (1176), 878 states have internal predecessors, (1176), 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 21:00:21,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1176 transitions. [2022-11-02 21:00:21,512 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1176 transitions. Word has length 172 [2022-11-02 21:00:21,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:21,513 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1176 transitions. [2022-11-02 21:00:21,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:21,513 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1176 transitions. [2022-11-02 21:00:21,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:21,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:21,516 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:21,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:21,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:21,733 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:21,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:21,734 INFO L85 PathProgramCache]: Analyzing trace with hash 95880157, now seen corresponding path program 1 times [2022-11-02 21:00:21,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:21,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755484840] [2022-11-02 21:00:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:21,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:21,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:21,736 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:21,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 21:00:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:22,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:22,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:22,762 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:22,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:22,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:22,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755484840] [2022-11-02 21:00:22,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755484840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:22,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:22,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:22,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991470135] [2022-11-02 21:00:22,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:22,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:22,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:22,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:22,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:22,765 INFO L87 Difference]: Start difference. First operand 879 states and 1176 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:23,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:23,296 INFO L93 Difference]: Finished difference Result 2292 states and 3260 transitions. [2022-11-02 21:00:23,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:00:23,296 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:23,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:23,299 INFO L225 Difference]: With dead ends: 2292 [2022-11-02 21:00:23,299 INFO L226 Difference]: Without dead ends: 1943 [2022-11-02 21:00:23,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:23,306 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1690 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:23,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1690 Valid, 2477 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:23,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2022-11-02 21:00:23,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 883. [2022-11-02 21:00:23,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.3390022675736961) internal successors, (1181), 882 states have internal predecessors, (1181), 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 21:00:23,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1181 transitions. [2022-11-02 21:00:23,336 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1181 transitions. Word has length 172 [2022-11-02 21:00:23,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:23,337 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1181 transitions. [2022-11-02 21:00:23,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:23,337 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1181 transitions. [2022-11-02 21:00:23,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:23,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:23,340 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:23,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:23,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:23,557 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:23,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:23,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1492467745, now seen corresponding path program 1 times [2022-11-02 21:00:23,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:23,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473076910] [2022-11-02 21:00:23,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:23,559 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:23,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:23,560 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:23,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 21:00:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:24,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:24,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:24,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:24,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:24,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:24,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473076910] [2022-11-02 21:00:24,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473076910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:24,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:24,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:24,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511350690] [2022-11-02 21:00:24,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:24,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:24,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:24,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:24,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:24,614 INFO L87 Difference]: Start difference. First operand 883 states and 1181 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:25,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:25,160 INFO L93 Difference]: Finished difference Result 2290 states and 3256 transitions. [2022-11-02 21:00:25,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:00:25,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:25,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:25,163 INFO L225 Difference]: With dead ends: 2290 [2022-11-02 21:00:25,163 INFO L226 Difference]: Without dead ends: 1941 [2022-11-02 21:00:25,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:25,164 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 1678 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1678 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:25,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1678 Valid, 2477 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:25,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2022-11-02 21:00:25,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 885. [2022-11-02 21:00:25,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 884 states have (on average 1.338235294117647) internal successors, (1183), 884 states have internal predecessors, (1183), 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 21:00:25,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1183 transitions. [2022-11-02 21:00:25,188 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1183 transitions. Word has length 172 [2022-11-02 21:00:25,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:25,188 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1183 transitions. [2022-11-02 21:00:25,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:25,189 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1183 transitions. [2022-11-02 21:00:25,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:25,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:25,191 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:25,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:25,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:25,406 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:25,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:25,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1522635873, now seen corresponding path program 1 times [2022-11-02 21:00:25,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:25,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272742630] [2022-11-02 21:00:25,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:25,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:25,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:25,409 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:25,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 21:00:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:25,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:25,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:26,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:26,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:26,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:26,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272742630] [2022-11-02 21:00:26,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272742630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:26,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:26,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:26,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467358270] [2022-11-02 21:00:26,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:26,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:26,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:26,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:26,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:26,418 INFO L87 Difference]: Start difference. First operand 885 states and 1183 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:26,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:26,934 INFO L93 Difference]: Finished difference Result 2271 states and 3227 transitions. [2022-11-02 21:00:26,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:00:26,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:26,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:26,938 INFO L225 Difference]: With dead ends: 2271 [2022-11-02 21:00:26,938 INFO L226 Difference]: Without dead ends: 1922 [2022-11-02 21:00:26,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:26,947 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1649 mSDsluCounter, 2029 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:26,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 2472 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:26,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2022-11-02 21:00:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 887. [2022-11-02 21:00:26,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 886 states have (on average 1.337471783295711) internal successors, (1185), 886 states have internal predecessors, (1185), 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 21:00:26,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1185 transitions. [2022-11-02 21:00:26,979 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1185 transitions. Word has length 172 [2022-11-02 21:00:26,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:26,981 INFO L495 AbstractCegarLoop]: Abstraction has 887 states and 1185 transitions. [2022-11-02 21:00:26,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:26,982 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1185 transitions. [2022-11-02 21:00:26,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:26,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:26,984 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:27,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-11-02 21:00:27,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:27,201 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:27,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:27,202 INFO L85 PathProgramCache]: Analyzing trace with hash 935829859, now seen corresponding path program 1 times [2022-11-02 21:00:27,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:27,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984344316] [2022-11-02 21:00:27,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:27,203 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:27,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:27,204 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:27,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-02 21:00:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:27,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 21:00:27,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:28,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:28,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:28,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:28,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984344316] [2022-11-02 21:00:28,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984344316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:28,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:28,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:28,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075021499] [2022-11-02 21:00:28,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:28,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:28,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:28,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:28,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:28,766 INFO L87 Difference]: Start difference. First operand 887 states and 1185 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:29,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:29,478 INFO L93 Difference]: Finished difference Result 2237 states and 3175 transitions. [2022-11-02 21:00:29,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:00:29,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:29,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:29,482 INFO L225 Difference]: With dead ends: 2237 [2022-11-02 21:00:29,482 INFO L226 Difference]: Without dead ends: 1888 [2022-11-02 21:00:29,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:29,484 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1602 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:29,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 2377 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:00:29,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2022-11-02 21:00:29,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 889. [2022-11-02 21:00:29,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 888 states have (on average 1.3367117117117118) internal successors, (1187), 888 states have internal predecessors, (1187), 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 21:00:29,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1187 transitions. [2022-11-02 21:00:29,507 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1187 transitions. Word has length 172 [2022-11-02 21:00:29,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:29,507 INFO L495 AbstractCegarLoop]: Abstraction has 889 states and 1187 transitions. [2022-11-02 21:00:29,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:29,507 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1187 transitions. [2022-11-02 21:00:29,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:29,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:29,510 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:29,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:29,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:29,727 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:29,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:29,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1636894437, now seen corresponding path program 1 times [2022-11-02 21:00:29,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:29,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070715579] [2022-11-02 21:00:29,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:29,728 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:29,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:29,729 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:29,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-02 21:00:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:30,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:30,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:30,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:30,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:30,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070715579] [2022-11-02 21:00:30,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070715579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:30,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:30,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:30,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767857695] [2022-11-02 21:00:30,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:30,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:30,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:30,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:30,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:30,716 INFO L87 Difference]: Start difference. First operand 889 states and 1187 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:00:31,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:31,172 INFO L93 Difference]: Finished difference Result 1958 states and 2759 transitions. [2022-11-02 21:00:31,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:00:31,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:31,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:31,175 INFO L225 Difference]: With dead ends: 1958 [2022-11-02 21:00:31,175 INFO L226 Difference]: Without dead ends: 1609 [2022-11-02 21:00:31,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:00:31,183 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1190 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:31,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 2017 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:31,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2022-11-02 21:00:31,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 891. [2022-11-02 21:00:31,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 890 states have (on average 1.3359550561797753) internal successors, (1189), 890 states have internal predecessors, (1189), 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 21:00:31,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1189 transitions. [2022-11-02 21:00:31,210 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1189 transitions. Word has length 172 [2022-11-02 21:00:31,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:31,210 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1189 transitions. [2022-11-02 21:00:31,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:00:31,211 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1189 transitions. [2022-11-02 21:00:31,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:31,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:31,213 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:31,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:31,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:31,426 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:31,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:31,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1978014489, now seen corresponding path program 1 times [2022-11-02 21:00:31,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:31,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325728116] [2022-11-02 21:00:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:31,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:31,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:31,429 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:31,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-02 21:00:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:31,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-02 21:00:31,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:33,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:35,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:35,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325728116] [2022-11-02 21:00:35,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325728116] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:35,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:00:35,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-02 21:00:35,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007011109] [2022-11-02 21:00:35,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:35,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 21:00:35,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:35,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 21:00:35,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:00:35,336 INFO L87 Difference]: Start difference. First operand 891 states and 1189 transitions. Second operand has 22 states, 22 states have (on average 15.545454545454545) internal successors, (342), 22 states have internal predecessors, (342), 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 21:00:35,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:35,843 INFO L93 Difference]: Finished difference Result 1598 states and 2235 transitions. [2022-11-02 21:00:35,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 21:00:35,844 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 15.545454545454545) internal successors, (342), 22 states have internal predecessors, (342), 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 172 [2022-11-02 21:00:35,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:35,848 INFO L225 Difference]: With dead ends: 1598 [2022-11-02 21:00:35,849 INFO L226 Difference]: Without dead ends: 1596 [2022-11-02 21:00:35,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2022-11-02 21:00:35,850 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1843 mSDsluCounter, 3425 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 3772 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 335 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:35,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1843 Valid, 3772 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 74 Invalid, 0 Unknown, 335 Unchecked, 0.2s Time] [2022-11-02 21:00:35,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2022-11-02 21:00:35,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1236. [2022-11-02 21:00:35,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.3765182186234817) internal successors, (1700), 1235 states have internal predecessors, (1700), 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 21:00:35,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1700 transitions. [2022-11-02 21:00:35,883 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1700 transitions. Word has length 172 [2022-11-02 21:00:35,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:35,883 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1700 transitions. [2022-11-02 21:00:35,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 15.545454545454545) internal successors, (342), 22 states have internal predecessors, (342), 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 21:00:35,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1700 transitions. [2022-11-02 21:00:35,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:35,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:35,887 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:35,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:36,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:36,105 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:36,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:36,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1507871009, now seen corresponding path program 1 times [2022-11-02 21:00:36,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:36,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674940519] [2022-11-02 21:00:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:36,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:36,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:36,108 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:36,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-02 21:00:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:36,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:36,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:36,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:36,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:36,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:36,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674940519] [2022-11-02 21:00:36,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674940519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:36,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:36,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:36,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665462276] [2022-11-02 21:00:36,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:36,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:36,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:36,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:36,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:36,672 INFO L87 Difference]: Start difference. First operand 1236 states and 1700 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:00:37,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:37,063 INFO L93 Difference]: Finished difference Result 2446 states and 3485 transitions. [2022-11-02 21:00:37,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:00:37,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:37,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:37,066 INFO L225 Difference]: With dead ends: 2446 [2022-11-02 21:00:37,066 INFO L226 Difference]: Without dead ends: 1758 [2022-11-02 21:00:37,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:00:37,068 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 1189 mSDsluCounter, 1845 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:37,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 2269 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:37,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2022-11-02 21:00:37,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1236. [2022-11-02 21:00:37,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.3757085020242914) internal successors, (1699), 1235 states have internal predecessors, (1699), 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 21:00:37,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1699 transitions. [2022-11-02 21:00:37,093 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1699 transitions. Word has length 172 [2022-11-02 21:00:37,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:37,093 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1699 transitions. [2022-11-02 21:00:37,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:00:37,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1699 transitions. [2022-11-02 21:00:37,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:37,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:37,096 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:37,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-02 21:00:37,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:37,313 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:37,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:37,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1852699171, now seen corresponding path program 1 times [2022-11-02 21:00:37,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:37,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864462214] [2022-11-02 21:00:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:37,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:37,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:37,316 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:37,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-02 21:00:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:37,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:37,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:37,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:37,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:37,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864462214] [2022-11-02 21:00:37,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864462214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:37,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:37,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:37,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889378684] [2022-11-02 21:00:37,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:37,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:37,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:37,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:37,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:37,874 INFO L87 Difference]: Start difference. First operand 1236 states and 1699 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:38,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:38,348 INFO L93 Difference]: Finished difference Result 2448 states and 3487 transitions. [2022-11-02 21:00:38,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:00:38,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:38,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:38,351 INFO L225 Difference]: With dead ends: 2448 [2022-11-02 21:00:38,352 INFO L226 Difference]: Without dead ends: 1764 [2022-11-02 21:00:38,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:38,353 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1419 mSDsluCounter, 2153 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:38,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1419 Valid, 2588 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:38,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2022-11-02 21:00:38,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1236. [2022-11-02 21:00:38,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.3748987854251011) internal successors, (1698), 1235 states have internal predecessors, (1698), 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 21:00:38,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1698 transitions. [2022-11-02 21:00:38,388 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1698 transitions. Word has length 172 [2022-11-02 21:00:38,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:38,389 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1698 transitions. [2022-11-02 21:00:38,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:38,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1698 transitions. [2022-11-02 21:00:38,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:38,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:38,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:38,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:38,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:38,606 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:38,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:38,607 INFO L85 PathProgramCache]: Analyzing trace with hash 447507493, now seen corresponding path program 1 times [2022-11-02 21:00:38,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:38,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272978655] [2022-11-02 21:00:38,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:38,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:38,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:38,608 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:38,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-02 21:00:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:39,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:39,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:39,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:39,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:39,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272978655] [2022-11-02 21:00:39,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272978655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:39,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:39,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:39,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603428738] [2022-11-02 21:00:39,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:39,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:39,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:39,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:39,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:39,200 INFO L87 Difference]: Start difference. First operand 1236 states and 1698 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:39,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:39,704 INFO L93 Difference]: Finished difference Result 2441 states and 3475 transitions. [2022-11-02 21:00:39,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:00:39,705 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:39,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:39,706 INFO L225 Difference]: With dead ends: 2441 [2022-11-02 21:00:39,707 INFO L226 Difference]: Without dead ends: 1763 [2022-11-02 21:00:39,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:39,708 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 1405 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 2599 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:39,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1405 Valid, 2599 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:39,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2022-11-02 21:00:39,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1236. [2022-11-02 21:00:39,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.3732793522267206) internal successors, (1696), 1235 states have internal predecessors, (1696), 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 21:00:39,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1696 transitions. [2022-11-02 21:00:39,736 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1696 transitions. Word has length 172 [2022-11-02 21:00:39,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:39,737 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1696 transitions. [2022-11-02 21:00:39,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:39,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1696 transitions. [2022-11-02 21:00:39,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:39,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:39,746 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:39,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:39,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:39,962 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:39,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:39,963 INFO L85 PathProgramCache]: Analyzing trace with hash 833369895, now seen corresponding path program 1 times [2022-11-02 21:00:39,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:39,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181796016] [2022-11-02 21:00:39,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:39,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:39,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:39,966 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:39,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-02 21:00:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:40,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:40,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:40,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:40,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:40,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181796016] [2022-11-02 21:00:40,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181796016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:40,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:40,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:40,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859138723] [2022-11-02 21:00:40,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:40,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:40,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:40,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:40,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:40,585 INFO L87 Difference]: Start difference. First operand 1236 states and 1696 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:41,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:41,064 INFO L93 Difference]: Finished difference Result 2444 states and 3478 transitions. [2022-11-02 21:00:41,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:00:41,065 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:41,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:41,067 INFO L225 Difference]: With dead ends: 2444 [2022-11-02 21:00:41,067 INFO L226 Difference]: Without dead ends: 1774 [2022-11-02 21:00:41,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:41,069 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 1393 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:41,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1393 Valid, 2673 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:41,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2022-11-02 21:00:41,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1236. [2022-11-02 21:00:41,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.37165991902834) internal successors, (1694), 1235 states have internal predecessors, (1694), 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 21:00:41,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1694 transitions. [2022-11-02 21:00:41,099 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1694 transitions. Word has length 172 [2022-11-02 21:00:41,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:41,099 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1694 transitions. [2022-11-02 21:00:41,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:41,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1694 transitions. [2022-11-02 21:00:41,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:41,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:41,102 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:41,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:41,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:41,319 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:41,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:41,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1564617943, now seen corresponding path program 1 times [2022-11-02 21:00:41,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:41,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991022851] [2022-11-02 21:00:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:41,321 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:41,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:41,322 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:41,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-02 21:00:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:41,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:41,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:42,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:42,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:42,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991022851] [2022-11-02 21:00:42,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991022851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:42,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:42,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:42,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98535570] [2022-11-02 21:00:42,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:42,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:42,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:42,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:42,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:42,003 INFO L87 Difference]: Start difference. First operand 1236 states and 1694 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:42,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:42,525 INFO L93 Difference]: Finished difference Result 2438 states and 3465 transitions. [2022-11-02 21:00:42,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:00:42,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:42,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:42,528 INFO L225 Difference]: With dead ends: 2438 [2022-11-02 21:00:42,528 INFO L226 Difference]: Without dead ends: 1780 [2022-11-02 21:00:42,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:42,533 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 1380 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:42,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 2718 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:42,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2022-11-02 21:00:42,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1236. [2022-11-02 21:00:42,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.368421052631579) internal successors, (1690), 1235 states have internal predecessors, (1690), 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 21:00:42,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1690 transitions. [2022-11-02 21:00:42,565 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1690 transitions. Word has length 172 [2022-11-02 21:00:42,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:42,565 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1690 transitions. [2022-11-02 21:00:42,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:42,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1690 transitions. [2022-11-02 21:00:42,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:42,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:42,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:42,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:42,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:42,786 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:42,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:42,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1720598485, now seen corresponding path program 1 times [2022-11-02 21:00:42,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:42,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898994432] [2022-11-02 21:00:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:42,787 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:42,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:42,788 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:42,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-02 21:00:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:43,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:43,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:43,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:43,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:43,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:43,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898994432] [2022-11-02 21:00:43,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898994432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:43,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:43,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:43,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125223198] [2022-11-02 21:00:43,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:43,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:43,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:43,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:43,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:43,402 INFO L87 Difference]: Start difference. First operand 1236 states and 1690 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:43,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:43,903 INFO L93 Difference]: Finished difference Result 2436 states and 3457 transitions. [2022-11-02 21:00:43,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:00:43,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:43,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:43,905 INFO L225 Difference]: With dead ends: 2436 [2022-11-02 21:00:43,905 INFO L226 Difference]: Without dead ends: 1794 [2022-11-02 21:00:43,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:43,906 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 1367 mSDsluCounter, 2278 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:43,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1367 Valid, 2757 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:43,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2022-11-02 21:00:43,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1236. [2022-11-02 21:00:43,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.365182186234818) internal successors, (1686), 1235 states have internal predecessors, (1686), 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 21:00:43,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1686 transitions. [2022-11-02 21:00:43,931 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1686 transitions. Word has length 172 [2022-11-02 21:00:43,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:43,931 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1686 transitions. [2022-11-02 21:00:43,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:43,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1686 transitions. [2022-11-02 21:00:43,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:43,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:43,932 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:43,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2022-11-02 21:00:44,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:44,133 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:44,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:44,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1650950611, now seen corresponding path program 1 times [2022-11-02 21:00:44,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:44,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254322654] [2022-11-02 21:00:44,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:44,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:44,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:44,135 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:44,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-02 21:00:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:44,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:44,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:44,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:44,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:44,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254322654] [2022-11-02 21:00:44,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254322654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:44,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:44,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:44,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418648130] [2022-11-02 21:00:44,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:44,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:44,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:44,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:44,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:44,778 INFO L87 Difference]: Start difference. First operand 1236 states and 1686 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:45,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:45,265 INFO L93 Difference]: Finished difference Result 2436 states and 3453 transitions. [2022-11-02 21:00:45,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:00:45,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:45,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:45,267 INFO L225 Difference]: With dead ends: 2436 [2022-11-02 21:00:45,267 INFO L226 Difference]: Without dead ends: 1826 [2022-11-02 21:00:45,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:45,268 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1344 mSDsluCounter, 2357 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:45,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 2858 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:45,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2022-11-02 21:00:45,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1236. [2022-11-02 21:00:45,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.3619433198380566) internal successors, (1682), 1235 states have internal predecessors, (1682), 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 21:00:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1682 transitions. [2022-11-02 21:00:45,290 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1682 transitions. Word has length 172 [2022-11-02 21:00:45,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:45,291 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1682 transitions. [2022-11-02 21:00:45,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:45,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1682 transitions. [2022-11-02 21:00:45,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:45,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:45,293 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:45,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:45,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:45,510 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:45,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:45,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1695964719, now seen corresponding path program 1 times [2022-11-02 21:00:45,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:45,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959166402] [2022-11-02 21:00:45,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:45,512 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:45,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:45,514 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:45,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-02 21:00:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:46,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:46,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:46,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:46,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:46,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959166402] [2022-11-02 21:00:46,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959166402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:46,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:46,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:46,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343095280] [2022-11-02 21:00:46,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:46,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:46,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:46,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:46,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:46,186 INFO L87 Difference]: Start difference. First operand 1236 states and 1682 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:00:46,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:46,588 INFO L93 Difference]: Finished difference Result 2357 states and 3333 transitions. [2022-11-02 21:00:46,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:00:46,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:46,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:46,590 INFO L225 Difference]: With dead ends: 2357 [2022-11-02 21:00:46,590 INFO L226 Difference]: Without dead ends: 1755 [2022-11-02 21:00:46,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:00:46,591 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 1093 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:46,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 2301 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:46,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2022-11-02 21:00:46,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1236. [2022-11-02 21:00:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.3587044534412955) internal successors, (1678), 1235 states have internal predecessors, (1678), 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 21:00:46,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1678 transitions. [2022-11-02 21:00:46,612 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1678 transitions. Word has length 172 [2022-11-02 21:00:46,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:46,612 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1678 transitions. [2022-11-02 21:00:46,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:00:46,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1678 transitions. [2022-11-02 21:00:46,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:46,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:46,614 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:46,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:46,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:46,814 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:46,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:46,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1261459121, now seen corresponding path program 1 times [2022-11-02 21:00:46,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:46,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86358076] [2022-11-02 21:00:46,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:46,816 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:46,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:46,817 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:46,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-02 21:00:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:47,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:47,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:47,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:47,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:47,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86358076] [2022-11-02 21:00:47,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86358076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:47,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:47,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:47,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963692398] [2022-11-02 21:00:47,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:47,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:47,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:47,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:47,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:47,461 INFO L87 Difference]: Start difference. First operand 1236 states and 1678 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:00:47,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:47,853 INFO L93 Difference]: Finished difference Result 2333 states and 3293 transitions. [2022-11-02 21:00:47,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:00:47,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:47,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:47,855 INFO L225 Difference]: With dead ends: 2333 [2022-11-02 21:00:47,855 INFO L226 Difference]: Without dead ends: 1755 [2022-11-02 21:00:47,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:00:47,856 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1075 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 2316 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:47,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 2316 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:47,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2022-11-02 21:00:47,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1236. [2022-11-02 21:00:47,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.3554655870445345) internal successors, (1674), 1235 states have internal predecessors, (1674), 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 21:00:47,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1674 transitions. [2022-11-02 21:00:47,887 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1674 transitions. Word has length 172 [2022-11-02 21:00:47,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:47,888 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1674 transitions. [2022-11-02 21:00:47,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:00:47,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1674 transitions. [2022-11-02 21:00:47,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:47,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:47,890 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:47,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:48,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:48,107 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:48,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:48,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1749506227, now seen corresponding path program 1 times [2022-11-02 21:00:48,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:48,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652520709] [2022-11-02 21:00:48,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:48,109 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:48,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:48,109 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:48,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-02 21:00:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:48,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:48,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:48,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:48,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652520709] [2022-11-02 21:00:48,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652520709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:48,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:48,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:48,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608877287] [2022-11-02 21:00:48,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:48,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:48,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:48,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:48,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:48,785 INFO L87 Difference]: Start difference. First operand 1236 states and 1674 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:49,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:49,336 INFO L93 Difference]: Finished difference Result 2436 states and 3441 transitions. [2022-11-02 21:00:49,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:00:49,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:49,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:49,339 INFO L225 Difference]: With dead ends: 2436 [2022-11-02 21:00:49,339 INFO L226 Difference]: Without dead ends: 1874 [2022-11-02 21:00:49,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:49,341 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 1305 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 2965 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:49,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 2965 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:49,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2022-11-02 21:00:49,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1236. [2022-11-02 21:00:49,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.3522267206477734) internal successors, (1670), 1235 states have internal predecessors, (1670), 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 21:00:49,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1670 transitions. [2022-11-02 21:00:49,378 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1670 transitions. Word has length 172 [2022-11-02 21:00:49,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:49,379 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1670 transitions. [2022-11-02 21:00:49,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:49,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1670 transitions. [2022-11-02 21:00:49,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:49,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:49,381 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:49,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:49,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:49,582 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:49,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:49,583 INFO L85 PathProgramCache]: Analyzing trace with hash 27503541, now seen corresponding path program 1 times [2022-11-02 21:00:49,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:49,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637910650] [2022-11-02 21:00:49,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:49,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:49,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:49,585 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:49,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-02 21:00:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:50,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:50,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:50,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:50,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:50,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637910650] [2022-11-02 21:00:50,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637910650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:50,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:50,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:50,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163223706] [2022-11-02 21:00:50,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:50,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:50,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:50,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:50,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:50,279 INFO L87 Difference]: Start difference. First operand 1236 states and 1670 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:50,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:50,814 INFO L93 Difference]: Finished difference Result 2442 states and 3449 transitions. [2022-11-02 21:00:50,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:00:50,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:50,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:50,816 INFO L225 Difference]: With dead ends: 2442 [2022-11-02 21:00:50,816 INFO L226 Difference]: Without dead ends: 1892 [2022-11-02 21:00:50,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:50,819 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1292 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:50,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1292 Valid, 3004 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:50,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2022-11-02 21:00:50,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1236. [2022-11-02 21:00:50,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.3506072874493926) internal successors, (1668), 1235 states have internal predecessors, (1668), 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 21:00:50,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1668 transitions. [2022-11-02 21:00:50,849 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1668 transitions. Word has length 172 [2022-11-02 21:00:50,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:50,849 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1668 transitions. [2022-11-02 21:00:50,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:50,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1668 transitions. [2022-11-02 21:00:50,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:50,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:50,851 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:50,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2022-11-02 21:00:51,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:51,051 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:51,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:51,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1754648503, now seen corresponding path program 1 times [2022-11-02 21:00:51,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:51,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121675045] [2022-11-02 21:00:51,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:51,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:51,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:51,054 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:51,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-02 21:00:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:51,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:51,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:51,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:51,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:51,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121675045] [2022-11-02 21:00:51,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121675045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:51,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:51,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:51,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365333148] [2022-11-02 21:00:51,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:51,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:51,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:51,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:51,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:51,739 INFO L87 Difference]: Start difference. First operand 1236 states and 1668 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:52,260 INFO L93 Difference]: Finished difference Result 2444 states and 3449 transitions. [2022-11-02 21:00:52,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:00:52,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:52,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:52,263 INFO L225 Difference]: With dead ends: 2444 [2022-11-02 21:00:52,263 INFO L226 Difference]: Without dead ends: 1902 [2022-11-02 21:00:52,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:52,264 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 1279 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 3049 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:52,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 3049 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:52,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2022-11-02 21:00:52,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1236. [2022-11-02 21:00:52,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.348987854251012) internal successors, (1666), 1235 states have internal predecessors, (1666), 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 21:00:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1666 transitions. [2022-11-02 21:00:52,298 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1666 transitions. Word has length 172 [2022-11-02 21:00:52,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:52,298 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1666 transitions. [2022-11-02 21:00:52,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:52,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1666 transitions. [2022-11-02 21:00:52,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:52,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:52,301 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:52,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:52,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:52,514 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:52,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:52,515 INFO L85 PathProgramCache]: Analyzing trace with hash 716063929, now seen corresponding path program 1 times [2022-11-02 21:00:52,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:52,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457348496] [2022-11-02 21:00:52,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:52,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:52,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:52,517 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:52,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-02 21:00:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:52,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:52,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:53,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:53,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:53,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:53,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457348496] [2022-11-02 21:00:53,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457348496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:53,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:53,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:53,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572239197] [2022-11-02 21:00:53,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:53,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:53,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:53,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:53,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:53,258 INFO L87 Difference]: Start difference. First operand 1236 states and 1666 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:53,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:53,808 INFO L93 Difference]: Finished difference Result 2444 states and 3447 transitions. [2022-11-02 21:00:53,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:00:53,809 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:53,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:53,811 INFO L225 Difference]: With dead ends: 2444 [2022-11-02 21:00:53,811 INFO L226 Difference]: Without dead ends: 1910 [2022-11-02 21:00:53,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:53,812 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 1266 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:53,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 3088 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:53,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2022-11-02 21:00:53,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1236. [2022-11-02 21:00:53,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.3473684210526315) internal successors, (1664), 1235 states have internal predecessors, (1664), 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 21:00:53,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1664 transitions. [2022-11-02 21:00:53,836 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1664 transitions. Word has length 172 [2022-11-02 21:00:53,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:53,837 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1664 transitions. [2022-11-02 21:00:53,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:53,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1664 transitions. [2022-11-02 21:00:53,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:53,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:53,839 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:53,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:54,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:54,057 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:54,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:54,057 INFO L85 PathProgramCache]: Analyzing trace with hash 834505403, now seen corresponding path program 1 times [2022-11-02 21:00:54,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:54,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534765434] [2022-11-02 21:00:54,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:54,058 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:54,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:54,059 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:54,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-02 21:00:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:54,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:54,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:54,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:54,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:54,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534765434] [2022-11-02 21:00:54,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534765434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:54,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:54,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:54,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551208994] [2022-11-02 21:00:54,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:54,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:54,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:54,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:54,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:54,772 INFO L87 Difference]: Start difference. First operand 1236 states and 1664 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:55,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:55,307 INFO L93 Difference]: Finished difference Result 2444 states and 3445 transitions. [2022-11-02 21:00:55,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:00:55,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:55,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:55,309 INFO L225 Difference]: With dead ends: 2444 [2022-11-02 21:00:55,309 INFO L226 Difference]: Without dead ends: 1926 [2022-11-02 21:00:55,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:55,310 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 1243 mSDsluCounter, 2602 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:55,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 3192 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:55,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2022-11-02 21:00:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1236. [2022-11-02 21:00:55,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.345748987854251) internal successors, (1662), 1235 states have internal predecessors, (1662), 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 21:00:55,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1662 transitions. [2022-11-02 21:00:55,344 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1662 transitions. Word has length 172 [2022-11-02 21:00:55,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:55,344 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1662 transitions. [2022-11-02 21:00:55,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:00:55,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1662 transitions. [2022-11-02 21:00:55,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:55,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:55,347 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:55,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:55,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:55,547 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:55,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:55,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1859390787, now seen corresponding path program 1 times [2022-11-02 21:00:55,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:55,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855602976] [2022-11-02 21:00:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:55,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:55,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:55,550 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:55,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-02 21:00:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:56,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:56,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:56,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:56,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855602976] [2022-11-02 21:00:56,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855602976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:56,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:56,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:56,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573248824] [2022-11-02 21:00:56,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:56,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:56,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:56,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:56,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:56,270 INFO L87 Difference]: Start difference. First operand 1236 states and 1662 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:00:56,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:56,718 INFO L93 Difference]: Finished difference Result 2271 states and 3187 transitions. [2022-11-02 21:00:56,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:00:56,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:56,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:56,719 INFO L225 Difference]: With dead ends: 2271 [2022-11-02 21:00:56,719 INFO L226 Difference]: Without dead ends: 1757 [2022-11-02 21:00:56,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:00:56,723 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 992 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 2344 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:56,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 2344 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:56,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2022-11-02 21:00:56,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1236. [2022-11-02 21:00:56,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.3441295546558705) internal successors, (1660), 1235 states have internal predecessors, (1660), 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 21:00:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1660 transitions. [2022-11-02 21:00:56,745 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1660 transitions. Word has length 172 [2022-11-02 21:00:56,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:56,746 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1660 transitions. [2022-11-02 21:00:56,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:00:56,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1660 transitions. [2022-11-02 21:00:56,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:56,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:56,748 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:56,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:56,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:56,949 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:56,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:56,949 INFO L85 PathProgramCache]: Analyzing trace with hash -508005569, now seen corresponding path program 1 times [2022-11-02 21:00:56,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:56,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612223628] [2022-11-02 21:00:56,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:56,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:56,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:56,951 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:56,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-02 21:00:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:57,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:00:57,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:57,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:57,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:57,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612223628] [2022-11-02 21:00:57,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612223628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:57,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:57,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:57,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700776477] [2022-11-02 21:00:57,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:57,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:57,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:57,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:57,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:57,826 INFO L87 Difference]: Start difference. First operand 1236 states and 1660 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:00:58,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:58,297 INFO L93 Difference]: Finished difference Result 3164 states and 4473 transitions. [2022-11-02 21:00:58,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:00:58,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:58,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:58,300 INFO L225 Difference]: With dead ends: 3164 [2022-11-02 21:00:58,301 INFO L226 Difference]: Without dead ends: 2670 [2022-11-02 21:00:58,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:00:58,302 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 923 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:58,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 2409 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:58,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2022-11-02 21:00:58,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 1436. [2022-11-02 21:00:58,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 1.3609756097560977) internal successors, (1953), 1435 states have internal predecessors, (1953), 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 21:00:58,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1953 transitions. [2022-11-02 21:00:58,341 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1953 transitions. Word has length 172 [2022-11-02 21:00:58,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:58,341 INFO L495 AbstractCegarLoop]: Abstraction has 1436 states and 1953 transitions. [2022-11-02 21:00:58,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:00:58,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1953 transitions. [2022-11-02 21:00:58,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:58,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:58,344 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:58,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:58,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:58,567 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:58,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:58,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1368477249, now seen corresponding path program 1 times [2022-11-02 21:00:58,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:58,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729835185] [2022-11-02 21:00:58,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:58,568 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:58,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:58,569 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:58,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-02 21:00:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:00:59,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:59,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:59,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:59,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729835185] [2022-11-02 21:00:59,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729835185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:59,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:59,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:59,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431793029] [2022-11-02 21:00:59,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:59,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:59,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:59,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:59,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:59,455 INFO L87 Difference]: Start difference. First operand 1436 states and 1953 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:00:59,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:59,940 INFO L93 Difference]: Finished difference Result 3360 states and 4756 transitions. [2022-11-02 21:00:59,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:00:59,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 21:00:59,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:59,943 INFO L225 Difference]: With dead ends: 3360 [2022-11-02 21:00:59,943 INFO L226 Difference]: Without dead ends: 2670 [2022-11-02 21:00:59,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:00:59,944 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 1157 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:59,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1157 Valid, 2409 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:59,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2022-11-02 21:00:59,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 1440. [2022-11-02 21:00:59,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 1.3585823488533704) internal successors, (1955), 1439 states have internal predecessors, (1955), 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 21:00:59,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1955 transitions. [2022-11-02 21:00:59,975 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1955 transitions. Word has length 172 [2022-11-02 21:00:59,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:59,976 INFO L495 AbstractCegarLoop]: Abstraction has 1440 states and 1955 transitions. [2022-11-02 21:00:59,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:00:59,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1955 transitions. [2022-11-02 21:00:59,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:00:59,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:59,977 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:59,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (64)] Ended with exit code 0 [2022-11-02 21:01:00,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:00,182 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:00,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:00,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1601633853, now seen corresponding path program 1 times [2022-11-02 21:01:00,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:00,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439517204] [2022-11-02 21:01:00,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:00,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:00,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:00,185 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:00,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-02 21:01:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:00,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:00,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:00,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:00,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439517204] [2022-11-02 21:01:00,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439517204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:00,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:00,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:00,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439953398] [2022-11-02 21:01:00,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:00,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:00,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:00,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:00,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:00,810 INFO L87 Difference]: Start difference. First operand 1440 states and 1955 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:01:00,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:00,925 INFO L93 Difference]: Finished difference Result 2426 states and 3372 transitions. [2022-11-02 21:01:00,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:00,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:00,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:00,928 INFO L225 Difference]: With dead ends: 2426 [2022-11-02 21:01:00,928 INFO L226 Difference]: Without dead ends: 1736 [2022-11-02 21:01:00,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:00,930 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 242 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:00,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1891 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2022-11-02 21:01:00,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2022-11-02 21:01:00,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1464. [2022-11-02 21:01:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 1.3554340396445659) internal successors, (1983), 1463 states have internal predecessors, (1983), 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 21:01:00,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1983 transitions. [2022-11-02 21:01:00,960 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1983 transitions. Word has length 172 [2022-11-02 21:01:00,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:00,960 INFO L495 AbstractCegarLoop]: Abstraction has 1464 states and 1983 transitions. [2022-11-02 21:01:00,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:01:00,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1983 transitions. [2022-11-02 21:01:00,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:00,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:00,963 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:00,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2022-11-02 21:01:01,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:01,170 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:01,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:01,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1635495365, now seen corresponding path program 1 times [2022-11-02 21:01:01,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:01,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327496480] [2022-11-02 21:01:01,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:01,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:01,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:01,172 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:01,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-02 21:01:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:01,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:01,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:01,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:01,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:01,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327496480] [2022-11-02 21:01:01,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327496480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:01,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:01,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:01,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273065827] [2022-11-02 21:01:01,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:01,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:01,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:01,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:01,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:01,941 INFO L87 Difference]: Start difference. First operand 1464 states and 1983 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:02,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:02,482 INFO L93 Difference]: Finished difference Result 3260 states and 4625 transitions. [2022-11-02 21:01:02,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:02,490 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:02,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:02,492 INFO L225 Difference]: With dead ends: 3260 [2022-11-02 21:01:02,492 INFO L226 Difference]: Without dead ends: 2574 [2022-11-02 21:01:02,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:02,494 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 1188 mSDsluCounter, 2733 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 3374 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:02,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 3374 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:01:02,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-11-02 21:01:02,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 1468. [2022-11-02 21:01:02,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 1.3531015678254943) internal successors, (1985), 1467 states have internal predecessors, (1985), 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 21:01:02,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 1985 transitions. [2022-11-02 21:01:02,520 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 1985 transitions. Word has length 172 [2022-11-02 21:01:02,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:02,521 INFO L495 AbstractCegarLoop]: Abstraction has 1468 states and 1985 transitions. [2022-11-02 21:01:02,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:02,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 1985 transitions. [2022-11-02 21:01:02,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:02,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:02,522 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:02,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (66)] Ended with exit code 0 [2022-11-02 21:01:02,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:02,723 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:02,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:02,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1875735111, now seen corresponding path program 1 times [2022-11-02 21:01:02,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:02,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692105776] [2022-11-02 21:01:02,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:02,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:02,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:02,726 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:02,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-02 21:01:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:03,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:03,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:03,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:03,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692105776] [2022-11-02 21:01:03,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692105776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:03,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:03,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:03,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766160984] [2022-11-02 21:01:03,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:03,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:03,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:03,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:03,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:03,364 INFO L87 Difference]: Start difference. First operand 1468 states and 1985 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:01:03,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:03,488 INFO L93 Difference]: Finished difference Result 2410 states and 3342 transitions. [2022-11-02 21:01:03,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:03,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:03,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:03,490 INFO L225 Difference]: With dead ends: 2410 [2022-11-02 21:01:03,490 INFO L226 Difference]: Without dead ends: 1728 [2022-11-02 21:01:03,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:03,491 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 239 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:03,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 1586 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2022-11-02 21:01:03,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2022-11-02 21:01:03,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1472. [2022-11-02 21:01:03,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 1.3507817811012917) internal successors, (1987), 1471 states have internal predecessors, (1987), 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 21:01:03,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 1987 transitions. [2022-11-02 21:01:03,517 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 1987 transitions. Word has length 172 [2022-11-02 21:01:03,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:03,517 INFO L495 AbstractCegarLoop]: Abstraction has 1472 states and 1987 transitions. [2022-11-02 21:01:03,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:01:03,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 1987 transitions. [2022-11-02 21:01:03,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:03,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:03,519 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:03,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:03,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:03,720 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:03,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:03,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1902800713, now seen corresponding path program 1 times [2022-11-02 21:01:03,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:03,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271075748] [2022-11-02 21:01:03,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:03,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:03,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:03,722 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:03,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-02 21:01:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:04,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:04,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:04,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:04,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:04,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271075748] [2022-11-02 21:01:04,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271075748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:04,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:04,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:04,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236198704] [2022-11-02 21:01:04,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:04,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:04,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:04,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:04,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:04,524 INFO L87 Difference]: Start difference. First operand 1472 states and 1987 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:05,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:05,096 INFO L93 Difference]: Finished difference Result 3256 states and 4611 transitions. [2022-11-02 21:01:05,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:05,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:05,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:05,099 INFO L225 Difference]: With dead ends: 3256 [2022-11-02 21:01:05,099 INFO L226 Difference]: Without dead ends: 2582 [2022-11-02 21:01:05,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:05,100 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1169 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 3411 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:05,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 3411 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:01:05,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2022-11-02 21:01:05,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 1480. [2022-11-02 21:01:05,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1479 states have (on average 1.3488843813387423) internal successors, (1995), 1479 states have internal predecessors, (1995), 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 21:01:05,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 1995 transitions. [2022-11-02 21:01:05,123 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 1995 transitions. Word has length 172 [2022-11-02 21:01:05,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:05,124 INFO L495 AbstractCegarLoop]: Abstraction has 1480 states and 1995 transitions. [2022-11-02 21:01:05,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:05,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 1995 transitions. [2022-11-02 21:01:05,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:05,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:05,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:05,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (68)] Ended with exit code 0 [2022-11-02 21:01:05,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:05,326 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:05,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:05,326 INFO L85 PathProgramCache]: Analyzing trace with hash -8241845, now seen corresponding path program 1 times [2022-11-02 21:01:05,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:05,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120882552] [2022-11-02 21:01:05,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:05,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:05,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:05,331 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:05,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-02 21:01:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:05,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:05,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:06,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:06,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:06,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:06,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120882552] [2022-11-02 21:01:06,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120882552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:06,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:06,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:06,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935778411] [2022-11-02 21:01:06,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:06,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:06,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:06,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:06,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:06,132 INFO L87 Difference]: Start difference. First operand 1480 states and 1995 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:06,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:06,707 INFO L93 Difference]: Finished difference Result 3236 states and 4577 transitions. [2022-11-02 21:01:06,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:06,707 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:06,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:06,709 INFO L225 Difference]: With dead ends: 3236 [2022-11-02 21:01:06,709 INFO L226 Difference]: Without dead ends: 2574 [2022-11-02 21:01:06,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:06,711 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 1148 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:06,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 3409 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:01:06,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-11-02 21:01:06,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 1492. [2022-11-02 21:01:06,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1491 states have (on average 1.3474178403755868) internal successors, (2009), 1491 states have internal predecessors, (2009), 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 21:01:06,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 2009 transitions. [2022-11-02 21:01:06,748 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 2009 transitions. Word has length 172 [2022-11-02 21:01:06,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:06,748 INFO L495 AbstractCegarLoop]: Abstraction has 1492 states and 2009 transitions. [2022-11-02 21:01:06,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:06,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 2009 transitions. [2022-11-02 21:01:06,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:06,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:06,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:06,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:06,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:06,967 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:06,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:06,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1224395571, now seen corresponding path program 1 times [2022-11-02 21:01:06,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:06,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979678237] [2022-11-02 21:01:06,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:06,969 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:06,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:06,969 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:06,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2022-11-02 21:01:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:07,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:07,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:07,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:07,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:07,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979678237] [2022-11-02 21:01:07,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979678237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:07,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:07,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:07,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638976352] [2022-11-02 21:01:07,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:07,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:07,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:07,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:07,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:07,600 INFO L87 Difference]: Start difference. First operand 1492 states and 2009 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:01:07,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:07,721 INFO L93 Difference]: Finished difference Result 2362 states and 3262 transitions. [2022-11-02 21:01:07,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:07,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:07,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:07,723 INFO L225 Difference]: With dead ends: 2362 [2022-11-02 21:01:07,723 INFO L226 Difference]: Without dead ends: 1704 [2022-11-02 21:01:07,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:07,724 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 238 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:07,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 1879 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 29 Unchecked, 0.1s Time] [2022-11-02 21:01:07,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2022-11-02 21:01:07,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1496. [2022-11-02 21:01:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 1.3451505016722407) internal successors, (2011), 1495 states have internal predecessors, (2011), 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 21:01:07,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 2011 transitions. [2022-11-02 21:01:07,748 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 2011 transitions. Word has length 172 [2022-11-02 21:01:07,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:07,749 INFO L495 AbstractCegarLoop]: Abstraction has 1496 states and 2011 transitions. [2022-11-02 21:01:07,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:01:07,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 2011 transitions. [2022-11-02 21:01:07,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:07,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:07,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:07,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (70)] Ended with exit code 0 [2022-11-02 21:01:07,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:07,951 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:07,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:07,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1384391887, now seen corresponding path program 1 times [2022-11-02 21:01:07,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:07,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11632647] [2022-11-02 21:01:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:07,953 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:07,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:07,954 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:07,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-02 21:01:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:08,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:08,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:08,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:08,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:08,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11632647] [2022-11-02 21:01:08,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11632647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:08,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:08,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:08,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89601799] [2022-11-02 21:01:08,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:08,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:08,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:08,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:08,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:08,786 INFO L87 Difference]: Start difference. First operand 1496 states and 2011 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:09,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:09,409 INFO L93 Difference]: Finished difference Result 3256 states and 4599 transitions. [2022-11-02 21:01:09,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:09,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:09,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:09,412 INFO L225 Difference]: With dead ends: 3256 [2022-11-02 21:01:09,412 INFO L226 Difference]: Without dead ends: 2606 [2022-11-02 21:01:09,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:09,413 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 1132 mSDsluCounter, 2860 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 3546 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:09,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 3546 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:01:09,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2022-11-02 21:01:09,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1504. [2022-11-02 21:01:09,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 1.343313373253493) internal successors, (2019), 1503 states have internal predecessors, (2019), 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 21:01:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 2019 transitions. [2022-11-02 21:01:09,444 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 2019 transitions. Word has length 172 [2022-11-02 21:01:09,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:09,444 INFO L495 AbstractCegarLoop]: Abstraction has 1504 states and 2019 transitions. [2022-11-02 21:01:09,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:09,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 2019 transitions. [2022-11-02 21:01:09,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:09,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:09,446 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:09,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (71)] Ended with exit code 0 [2022-11-02 21:01:09,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:09,646 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:09,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:09,647 INFO L85 PathProgramCache]: Analyzing trace with hash -949000751, now seen corresponding path program 1 times [2022-11-02 21:01:09,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:09,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150362484] [2022-11-02 21:01:09,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:09,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:09,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:09,648 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:09,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2022-11-02 21:01:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:10,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:10,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:10,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:10,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:10,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:10,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150362484] [2022-11-02 21:01:10,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150362484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:10,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:10,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:10,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882679821] [2022-11-02 21:01:10,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:10,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:10,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:10,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:10,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:10,499 INFO L87 Difference]: Start difference. First operand 1504 states and 2019 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:11,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:11,084 INFO L93 Difference]: Finished difference Result 3248 states and 4583 transitions. [2022-11-02 21:01:11,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:11,085 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:11,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:11,087 INFO L225 Difference]: With dead ends: 3248 [2022-11-02 21:01:11,087 INFO L226 Difference]: Without dead ends: 2606 [2022-11-02 21:01:11,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:11,089 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 1118 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:11,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 3557 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:01:11,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2022-11-02 21:01:11,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1512. [2022-11-02 21:01:11,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1511 states have (on average 1.3414956982131039) internal successors, (2027), 1511 states have internal predecessors, (2027), 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 21:01:11,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2027 transitions. [2022-11-02 21:01:11,124 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2027 transitions. Word has length 172 [2022-11-02 21:01:11,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:11,124 INFO L495 AbstractCegarLoop]: Abstraction has 1512 states and 2027 transitions. [2022-11-02 21:01:11,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:11,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2027 transitions. [2022-11-02 21:01:11,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:11,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:11,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:11,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (72)] Ended with exit code 0 [2022-11-02 21:01:11,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:11,326 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:11,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:11,326 INFO L85 PathProgramCache]: Analyzing trace with hash 311916499, now seen corresponding path program 1 times [2022-11-02 21:01:11,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:11,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367691757] [2022-11-02 21:01:11,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:11,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:11,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:11,329 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:11,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2022-11-02 21:01:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:11,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:11,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:12,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:12,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:12,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367691757] [2022-11-02 21:01:12,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367691757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:12,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:12,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:12,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078245213] [2022-11-02 21:01:12,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:12,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:12,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:12,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:12,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:12,167 INFO L87 Difference]: Start difference. First operand 1512 states and 2027 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:12,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:12,759 INFO L93 Difference]: Finished difference Result 3260 states and 4597 transitions. [2022-11-02 21:01:12,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:12,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:12,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:12,762 INFO L225 Difference]: With dead ends: 3260 [2022-11-02 21:01:12,762 INFO L226 Difference]: Without dead ends: 2626 [2022-11-02 21:01:12,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:12,763 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 1107 mSDsluCounter, 2953 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 3666 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:12,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 3666 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:01:12,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2022-11-02 21:01:12,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 1520. [2022-11-02 21:01:12,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 1.3396971691902568) internal successors, (2035), 1519 states have internal predecessors, (2035), 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 21:01:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2035 transitions. [2022-11-02 21:01:12,801 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2035 transitions. Word has length 172 [2022-11-02 21:01:12,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:12,801 INFO L495 AbstractCegarLoop]: Abstraction has 1520 states and 2035 transitions. [2022-11-02 21:01:12,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:12,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2035 transitions. [2022-11-02 21:01:12,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:12,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:12,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:12,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:13,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:13,021 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:13,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:13,021 INFO L85 PathProgramCache]: Analyzing trace with hash 755817173, now seen corresponding path program 1 times [2022-11-02 21:01:13,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:13,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965301706] [2022-11-02 21:01:13,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:13,022 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:13,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:13,023 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:13,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-02 21:01:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:13,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:13,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:13,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:13,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:13,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965301706] [2022-11-02 21:01:13,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965301706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:13,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:13,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:13,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371526914] [2022-11-02 21:01:13,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:13,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:13,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:13,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:13,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:13,918 INFO L87 Difference]: Start difference. First operand 1520 states and 2035 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:14,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:14,503 INFO L93 Difference]: Finished difference Result 3256 states and 4587 transitions. [2022-11-02 21:01:14,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:14,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:14,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:14,506 INFO L225 Difference]: With dead ends: 3256 [2022-11-02 21:01:14,506 INFO L226 Difference]: Without dead ends: 2626 [2022-11-02 21:01:14,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:14,507 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 1098 mSDsluCounter, 2953 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 3668 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:14,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 3668 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:01:14,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2022-11-02 21:01:14,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 1524. [2022-11-02 21:01:14,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1523 states have (on average 1.3374917925147736) internal successors, (2037), 1523 states have internal predecessors, (2037), 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 21:01:14,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 2037 transitions. [2022-11-02 21:01:14,544 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 2037 transitions. Word has length 172 [2022-11-02 21:01:14,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:14,544 INFO L495 AbstractCegarLoop]: Abstraction has 1524 states and 2037 transitions. [2022-11-02 21:01:14,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:14,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 2037 transitions. [2022-11-02 21:01:14,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:14,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:14,547 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:14,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (74)] Ended with exit code 0 [2022-11-02 21:01:14,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:14,747 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:14,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:14,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1272768937, now seen corresponding path program 1 times [2022-11-02 21:01:14,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:14,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249592887] [2022-11-02 21:01:14,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:14,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:14,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:14,750 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:14,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2022-11-02 21:01:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:15,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:15,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:15,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:15,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:15,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249592887] [2022-11-02 21:01:15,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249592887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:15,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:15,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:15,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335506366] [2022-11-02 21:01:15,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:15,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:15,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:15,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:15,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:15,590 INFO L87 Difference]: Start difference. First operand 1524 states and 2037 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:16,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:16,174 INFO L93 Difference]: Finished difference Result 3232 states and 4547 transitions. [2022-11-02 21:01:16,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:16,175 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:16,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:16,177 INFO L225 Difference]: With dead ends: 3232 [2022-11-02 21:01:16,177 INFO L226 Difference]: Without dead ends: 2606 [2022-11-02 21:01:16,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:16,179 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 1086 mSDsluCounter, 2865 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 3565 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:16,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 3565 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:01:16,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2022-11-02 21:01:16,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1528. [2022-11-02 21:01:16,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1527 states have (on average 1.335297969875573) internal successors, (2039), 1527 states have internal predecessors, (2039), 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 21:01:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 2039 transitions. [2022-11-02 21:01:16,208 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 2039 transitions. Word has length 172 [2022-11-02 21:01:16,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:16,208 INFO L495 AbstractCegarLoop]: Abstraction has 1528 states and 2039 transitions. [2022-11-02 21:01:16,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:16,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 2039 transitions. [2022-11-02 21:01:16,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:16,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:16,210 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:16,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (75)] Ended with exit code 0 [2022-11-02 21:01:16,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:16,411 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:16,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:16,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1288287655, now seen corresponding path program 1 times [2022-11-02 21:01:16,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:16,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863884300] [2022-11-02 21:01:16,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:16,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:16,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:16,414 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:16,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2022-11-02 21:01:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:16,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 21:01:16,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:17,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:17,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:17,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:17,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863884300] [2022-11-02 21:01:17,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863884300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:17,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:17,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:17,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137935348] [2022-11-02 21:01:17,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:17,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:17,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:17,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:17,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:17,576 INFO L87 Difference]: Start difference. First operand 1528 states and 2039 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:18,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:18,376 INFO L93 Difference]: Finished difference Result 3196 states and 4489 transitions. [2022-11-02 21:01:18,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:18,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:18,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:18,378 INFO L225 Difference]: With dead ends: 3196 [2022-11-02 21:01:18,378 INFO L226 Difference]: Without dead ends: 2574 [2022-11-02 21:01:18,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:18,379 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 1067 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 3253 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:18,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 3253 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:01:18,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-11-02 21:01:18,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 1532. [2022-11-02 21:01:18,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1531 states have (on average 1.333115610711953) internal successors, (2041), 1531 states have internal predecessors, (2041), 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 21:01:18,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 2041 transitions. [2022-11-02 21:01:18,419 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 2041 transitions. Word has length 172 [2022-11-02 21:01:18,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:18,420 INFO L495 AbstractCegarLoop]: Abstraction has 1532 states and 2041 transitions. [2022-11-02 21:01:18,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:18,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 2041 transitions. [2022-11-02 21:01:18,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:18,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:18,422 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:18,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:18,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:18,640 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:18,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:18,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1641376037, now seen corresponding path program 1 times [2022-11-02 21:01:18,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:18,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152612569] [2022-11-02 21:01:18,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:18,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:18,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:18,643 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:18,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2022-11-02 21:01:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:19,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:19,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:19,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:19,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:19,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152612569] [2022-11-02 21:01:19,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152612569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:19,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:19,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:19,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384312985] [2022-11-02 21:01:19,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:19,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:19,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:19,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:19,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:19,331 INFO L87 Difference]: Start difference. First operand 1532 states and 2041 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:01:19,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:19,509 INFO L93 Difference]: Finished difference Result 2344 states and 3218 transitions. [2022-11-02 21:01:19,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:01:19,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:19,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:19,512 INFO L225 Difference]: With dead ends: 2344 [2022-11-02 21:01:19,512 INFO L226 Difference]: Without dead ends: 1726 [2022-11-02 21:01:19,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:19,513 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 270 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:19,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 2030 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 31 Unchecked, 0.1s Time] [2022-11-02 21:01:19,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2022-11-02 21:01:19,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1536. [2022-11-02 21:01:19,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1535 states have (on average 1.3309446254071662) internal successors, (2043), 1535 states have internal predecessors, (2043), 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 21:01:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 2043 transitions. [2022-11-02 21:01:19,552 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 2043 transitions. Word has length 172 [2022-11-02 21:01:19,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:19,553 INFO L495 AbstractCegarLoop]: Abstraction has 1536 states and 2043 transitions. [2022-11-02 21:01:19,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:01:19,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 2043 transitions. [2022-11-02 21:01:19,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:19,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:19,555 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:19,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (77)] Ended with exit code 0 [2022-11-02 21:01:19,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:19,772 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:19,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:19,772 INFO L85 PathProgramCache]: Analyzing trace with hash -747889699, now seen corresponding path program 1 times [2022-11-02 21:01:19,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:19,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803741510] [2022-11-02 21:01:19,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:19,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:19,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:19,774 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:19,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2022-11-02 21:01:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:20,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:20,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:20,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:20,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:20,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803741510] [2022-11-02 21:01:20,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803741510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:20,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:20,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:20,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313990478] [2022-11-02 21:01:20,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:20,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:20,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:20,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:20,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:20,682 INFO L87 Difference]: Start difference. First operand 1536 states and 2043 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:21,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:21,259 INFO L93 Difference]: Finished difference Result 3260 states and 4577 transitions. [2022-11-02 21:01:21,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:21,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:21,262 INFO L225 Difference]: With dead ends: 3260 [2022-11-02 21:01:21,262 INFO L226 Difference]: Without dead ends: 2646 [2022-11-02 21:01:21,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:21,263 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 1068 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 3752 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:21,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 3752 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:01:21,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2022-11-02 21:01:21,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 1540. [2022-11-02 21:01:21,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1539 states have (on average 1.3287849252761534) internal successors, (2045), 1539 states have internal predecessors, (2045), 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 21:01:21,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2045 transitions. [2022-11-02 21:01:21,297 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2045 transitions. Word has length 172 [2022-11-02 21:01:21,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:21,297 INFO L495 AbstractCegarLoop]: Abstraction has 1540 states and 2045 transitions. [2022-11-02 21:01:21,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:21,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2045 transitions. [2022-11-02 21:01:21,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:21,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:21,299 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:21,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (78)] Ended with exit code 0 [2022-11-02 21:01:21,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:21,499 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:21,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:21,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1645282977, now seen corresponding path program 1 times [2022-11-02 21:01:21,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:21,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567890233] [2022-11-02 21:01:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:21,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:21,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:21,503 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:21,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2022-11-02 21:01:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:21,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:21,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:22,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:22,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:22,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567890233] [2022-11-02 21:01:22,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567890233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:22,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:22,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:22,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195533829] [2022-11-02 21:01:22,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:22,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:22,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:22,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:22,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:22,182 INFO L87 Difference]: Start difference. First operand 1540 states and 2045 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:01:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:22,330 INFO L93 Difference]: Finished difference Result 2288 states and 3130 transitions. [2022-11-02 21:01:22,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:01:22,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:22,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:22,333 INFO L225 Difference]: With dead ends: 2288 [2022-11-02 21:01:22,333 INFO L226 Difference]: Without dead ends: 1678 [2022-11-02 21:01:22,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:22,334 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 274 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:22,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 1651 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2022-11-02 21:01:22,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2022-11-02 21:01:22,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1544. [2022-11-02 21:01:22,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1543 states have (on average 1.3266364225534673) internal successors, (2047), 1543 states have internal predecessors, (2047), 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 21:01:22,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2047 transitions. [2022-11-02 21:01:22,378 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2047 transitions. Word has length 172 [2022-11-02 21:01:22,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:22,379 INFO L495 AbstractCegarLoop]: Abstraction has 1544 states and 2047 transitions. [2022-11-02 21:01:22,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:01:22,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2047 transitions. [2022-11-02 21:01:22,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:22,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:22,380 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:22,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:22,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:22,581 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:22,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:22,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1221636255, now seen corresponding path program 1 times [2022-11-02 21:01:22,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:22,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147722151] [2022-11-02 21:01:22,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:22,582 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:22,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:22,583 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:22,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2022-11-02 21:01:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:23,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:23,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:23,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:23,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:23,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:23,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147722151] [2022-11-02 21:01:23,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147722151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:23,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:23,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:23,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462788958] [2022-11-02 21:01:23,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:23,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:23,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:23,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:23,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:23,505 INFO L87 Difference]: Start difference. First operand 1544 states and 2047 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:24,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:24,135 INFO L93 Difference]: Finished difference Result 3248 states and 4551 transitions. [2022-11-02 21:01:24,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:24,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:24,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:24,138 INFO L225 Difference]: With dead ends: 3248 [2022-11-02 21:01:24,138 INFO L226 Difference]: Without dead ends: 2654 [2022-11-02 21:01:24,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:24,139 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 1039 mSDsluCounter, 3049 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 3804 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:24,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 3804 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:01:24,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2022-11-02 21:01:24,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 1560. [2022-11-02 21:01:24,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1560 states, 1559 states have (on average 1.3258499037844773) internal successors, (2067), 1559 states have internal predecessors, (2067), 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 21:01:24,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 2067 transitions. [2022-11-02 21:01:24,167 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 2067 transitions. Word has length 172 [2022-11-02 21:01:24,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:24,168 INFO L495 AbstractCegarLoop]: Abstraction has 1560 states and 2067 transitions. [2022-11-02 21:01:24,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:24,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 2067 transitions. [2022-11-02 21:01:24,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:24,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:24,169 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:24,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (80)] Ended with exit code 0 [2022-11-02 21:01:24,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:24,382 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:24,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:24,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1294022813, now seen corresponding path program 1 times [2022-11-02 21:01:24,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:24,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832632926] [2022-11-02 21:01:24,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:24,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:24,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:24,385 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:24,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2022-11-02 21:01:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:24,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:24,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:25,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:25,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:25,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:25,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832632926] [2022-11-02 21:01:25,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832632926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:25,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:25,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:25,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145036659] [2022-11-02 21:01:25,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:25,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:25,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:25,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:25,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:25,307 INFO L87 Difference]: Start difference. First operand 1560 states and 2067 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:25,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:25,903 INFO L93 Difference]: Finished difference Result 3236 states and 4529 transitions. [2022-11-02 21:01:25,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:25,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:25,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:25,905 INFO L225 Difference]: With dead ends: 3236 [2022-11-02 21:01:25,905 INFO L226 Difference]: Without dead ends: 2646 [2022-11-02 21:01:25,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:25,906 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1028 mSDsluCounter, 3035 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 3787 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:25,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 3787 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:01:25,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2022-11-02 21:01:25,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 1564. [2022-11-02 21:01:25,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1563 states have (on average 1.323736404350608) internal successors, (2069), 1563 states have internal predecessors, (2069), 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 21:01:25,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2069 transitions. [2022-11-02 21:01:25,931 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2069 transitions. Word has length 172 [2022-11-02 21:01:25,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:25,931 INFO L495 AbstractCegarLoop]: Abstraction has 1564 states and 2069 transitions. [2022-11-02 21:01:25,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:25,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2069 transitions. [2022-11-02 21:01:25,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:25,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:25,933 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:25,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (81)] Ended with exit code 0 [2022-11-02 21:01:26,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:26,133 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:26,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:26,134 INFO L85 PathProgramCache]: Analyzing trace with hash -592422939, now seen corresponding path program 1 times [2022-11-02 21:01:26,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:26,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283144784] [2022-11-02 21:01:26,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:26,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:26,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:26,136 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:26,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2022-11-02 21:01:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:26,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:26,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:26,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:26,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:26,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283144784] [2022-11-02 21:01:26,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283144784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:26,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:26,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:26,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479086485] [2022-11-02 21:01:26,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:26,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:26,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:26,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:26,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:26,851 INFO L87 Difference]: Start difference. First operand 1564 states and 2069 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:01:27,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:27,042 INFO L93 Difference]: Finished difference Result 2248 states and 3060 transitions. [2022-11-02 21:01:27,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:01:27,042 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:27,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:27,044 INFO L225 Difference]: With dead ends: 2248 [2022-11-02 21:01:27,044 INFO L226 Difference]: Without dead ends: 1662 [2022-11-02 21:01:27,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:27,045 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 246 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:27,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 2188 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 55 Unchecked, 0.1s Time] [2022-11-02 21:01:27,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2022-11-02 21:01:27,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1568. [2022-11-02 21:01:27,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1567 states have (on average 1.3216336949585195) internal successors, (2071), 1567 states have internal predecessors, (2071), 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 21:01:27,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2071 transitions. [2022-11-02 21:01:27,069 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2071 transitions. Word has length 172 [2022-11-02 21:01:27,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:27,069 INFO L495 AbstractCegarLoop]: Abstraction has 1568 states and 2071 transitions. [2022-11-02 21:01:27,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:01:27,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2071 transitions. [2022-11-02 21:01:27,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:27,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:27,071 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:27,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:27,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:27,271 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:27,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:27,272 INFO L85 PathProgramCache]: Analyzing trace with hash 793780455, now seen corresponding path program 1 times [2022-11-02 21:01:27,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:27,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941871073] [2022-11-02 21:01:27,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:27,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:27,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:27,274 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:27,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-02 21:01:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:27,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:28,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:28,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:28,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941871073] [2022-11-02 21:01:28,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941871073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:28,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:28,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:28,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013167873] [2022-11-02 21:01:28,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:28,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:28,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:28,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:28,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:28,274 INFO L87 Difference]: Start difference. First operand 1568 states and 2071 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:28,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:28,945 INFO L93 Difference]: Finished difference Result 3256 states and 4551 transitions. [2022-11-02 21:01:28,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:28,945 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:28,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:28,947 INFO L225 Difference]: With dead ends: 3256 [2022-11-02 21:01:28,948 INFO L226 Difference]: Without dead ends: 2678 [2022-11-02 21:01:28,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:28,949 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 1012 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 3924 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:28,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 3924 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:01:28,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2022-11-02 21:01:28,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 1576. [2022-11-02 21:01:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 1.32) internal successors, (2079), 1575 states have internal predecessors, (2079), 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 21:01:28,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2079 transitions. [2022-11-02 21:01:28,991 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2079 transitions. Word has length 172 [2022-11-02 21:01:28,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:28,992 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 2079 transitions. [2022-11-02 21:01:28,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:28,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2079 transitions. [2022-11-02 21:01:28,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:28,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:28,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:29,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (83)] Ended with exit code 0 [2022-11-02 21:01:29,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:29,194 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:29,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:29,194 INFO L85 PathProgramCache]: Analyzing trace with hash 934329065, now seen corresponding path program 1 times [2022-11-02 21:01:29,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:29,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789780052] [2022-11-02 21:01:29,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:29,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:29,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:29,196 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:29,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2022-11-02 21:01:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:29,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:29,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:30,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:30,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:30,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789780052] [2022-11-02 21:01:30,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789780052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:30,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:30,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:30,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104675497] [2022-11-02 21:01:30,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:30,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:30,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:30,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:30,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:30,324 INFO L87 Difference]: Start difference. First operand 1576 states and 2079 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:31,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:31,050 INFO L93 Difference]: Finished difference Result 3251 states and 4541 transitions. [2022-11-02 21:01:31,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:31,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:31,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:31,052 INFO L225 Difference]: With dead ends: 3251 [2022-11-02 21:01:31,053 INFO L226 Difference]: Without dead ends: 2679 [2022-11-02 21:01:31,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:31,054 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 998 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:31,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 3935 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:01:31,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2022-11-02 21:01:31,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 1582. [2022-11-02 21:01:31,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 1.3187855787476281) internal successors, (2085), 1581 states have internal predecessors, (2085), 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 21:01:31,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2085 transitions. [2022-11-02 21:01:31,091 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2085 transitions. Word has length 172 [2022-11-02 21:01:31,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:31,092 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2085 transitions. [2022-11-02 21:01:31,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:31,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2085 transitions. [2022-11-02 21:01:31,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:31,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:31,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:31,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (84)] Ended with exit code 0 [2022-11-02 21:01:31,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:31,310 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:31,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:31,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1357030891, now seen corresponding path program 1 times [2022-11-02 21:01:31,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:31,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612218757] [2022-11-02 21:01:31,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:31,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:31,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:31,313 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:31,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2022-11-02 21:01:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:31,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:31,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:32,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:32,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:32,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612218757] [2022-11-02 21:01:32,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612218757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:32,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:32,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:32,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611740858] [2022-11-02 21:01:32,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:32,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:32,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:32,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:32,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:32,094 INFO L87 Difference]: Start difference. First operand 1582 states and 2085 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:01:32,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:32,279 INFO L93 Difference]: Finished difference Result 2200 states and 2984 transitions. [2022-11-02 21:01:32,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:01:32,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:32,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:32,281 INFO L225 Difference]: With dead ends: 2200 [2022-11-02 21:01:32,281 INFO L226 Difference]: Without dead ends: 1630 [2022-11-02 21:01:32,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:32,283 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 278 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:32,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1889 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 54 Unchecked, 0.1s Time] [2022-11-02 21:01:32,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2022-11-02 21:01:32,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1584. [2022-11-02 21:01:32,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1583 states have (on average 1.317751105495894) internal successors, (2086), 1583 states have internal predecessors, (2086), 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 21:01:32,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2086 transitions. [2022-11-02 21:01:32,311 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2086 transitions. Word has length 172 [2022-11-02 21:01:32,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:32,312 INFO L495 AbstractCegarLoop]: Abstraction has 1584 states and 2086 transitions. [2022-11-02 21:01:32,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:01:32,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2086 transitions. [2022-11-02 21:01:32,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:32,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:32,315 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:32,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (85)] Ended with exit code 0 [2022-11-02 21:01:32,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:32,516 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:32,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:32,516 INFO L85 PathProgramCache]: Analyzing trace with hash -331912851, now seen corresponding path program 1 times [2022-11-02 21:01:32,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:32,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632308774] [2022-11-02 21:01:32,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:32,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:32,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:32,519 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:32,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2022-11-02 21:01:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:33,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:33,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:33,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:33,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:33,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632308774] [2022-11-02 21:01:33,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632308774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:33,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:33,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:33,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056928378] [2022-11-02 21:01:33,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:33,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:33,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:33,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:33,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:33,579 INFO L87 Difference]: Start difference. First operand 1584 states and 2086 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:34,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:34,186 INFO L93 Difference]: Finished difference Result 3264 states and 4556 transitions. [2022-11-02 21:01:34,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:34,187 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:34,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:34,189 INFO L225 Difference]: With dead ends: 3264 [2022-11-02 21:01:34,189 INFO L226 Difference]: Without dead ends: 2696 [2022-11-02 21:01:34,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:34,191 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 985 mSDsluCounter, 3238 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 4046 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:34,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 4046 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:01:34,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2022-11-02 21:01:34,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 1586. [2022-11-02 21:01:34,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1586 states, 1585 states have (on average 1.316719242902208) internal successors, (2087), 1585 states have internal predecessors, (2087), 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 21:01:34,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2087 transitions. [2022-11-02 21:01:34,223 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2087 transitions. Word has length 172 [2022-11-02 21:01:34,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:34,223 INFO L495 AbstractCegarLoop]: Abstraction has 1586 states and 2087 transitions. [2022-11-02 21:01:34,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:34,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2087 transitions. [2022-11-02 21:01:34,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:34,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:34,226 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:34,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (86)] Ended with exit code 0 [2022-11-02 21:01:34,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:34,428 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:34,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:34,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1920260753, now seen corresponding path program 1 times [2022-11-02 21:01:34,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:34,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7625804] [2022-11-02 21:01:34,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:34,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:34,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:34,431 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:34,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2022-11-02 21:01:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:34,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:34,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:35,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:35,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:35,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7625804] [2022-11-02 21:01:35,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7625804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:35,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:35,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:35,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687458102] [2022-11-02 21:01:35,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:35,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:35,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:35,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:35,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:35,481 INFO L87 Difference]: Start difference. First operand 1586 states and 2087 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:36,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:36,097 INFO L93 Difference]: Finished difference Result 3262 states and 4551 transitions. [2022-11-02 21:01:36,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:36,098 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:36,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:36,100 INFO L225 Difference]: With dead ends: 3262 [2022-11-02 21:01:36,100 INFO L226 Difference]: Without dead ends: 2696 [2022-11-02 21:01:36,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:36,101 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 976 mSDsluCounter, 3238 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 4048 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:36,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 4048 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:01:36,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2022-11-02 21:01:36,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 1588. [2022-11-02 21:01:36,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1587 states have (on average 1.3156899810964082) internal successors, (2088), 1587 states have internal predecessors, (2088), 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 21:01:36,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2088 transitions. [2022-11-02 21:01:36,128 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2088 transitions. Word has length 172 [2022-11-02 21:01:36,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:36,129 INFO L495 AbstractCegarLoop]: Abstraction has 1588 states and 2088 transitions. [2022-11-02 21:01:36,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:36,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2088 transitions. [2022-11-02 21:01:36,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:36,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:36,131 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:36,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:36,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:36,333 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:36,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:36,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1094842865, now seen corresponding path program 1 times [2022-11-02 21:01:36,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:36,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874406829] [2022-11-02 21:01:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:36,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:36,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:36,335 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:36,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2022-11-02 21:01:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:36,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:37,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:37,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:37,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874406829] [2022-11-02 21:01:37,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874406829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:37,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:37,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:37,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620352717] [2022-11-02 21:01:37,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:37,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:37,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:37,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:37,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:37,350 INFO L87 Difference]: Start difference. First operand 1588 states and 2088 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:38,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:38,016 INFO L93 Difference]: Finished difference Result 3243 states and 4521 transitions. [2022-11-02 21:01:38,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:38,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:38,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:38,018 INFO L225 Difference]: With dead ends: 3243 [2022-11-02 21:01:38,018 INFO L226 Difference]: Without dead ends: 2679 [2022-11-02 21:01:38,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:38,019 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 964 mSDsluCounter, 3150 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 3945 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:38,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 3945 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:01:38,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2022-11-02 21:01:38,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 1590. [2022-11-02 21:01:38,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1589 states have (on average 1.3146633102580239) internal successors, (2089), 1589 states have internal predecessors, (2089), 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 21:01:38,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2089 transitions. [2022-11-02 21:01:38,061 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2089 transitions. Word has length 172 [2022-11-02 21:01:38,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:38,062 INFO L495 AbstractCegarLoop]: Abstraction has 1590 states and 2089 transitions. [2022-11-02 21:01:38,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:38,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2089 transitions. [2022-11-02 21:01:38,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:38,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:38,063 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:38,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (88)] Ended with exit code 0 [2022-11-02 21:01:38,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:38,264 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:38,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:38,264 INFO L85 PathProgramCache]: Analyzing trace with hash 508036851, now seen corresponding path program 1 times [2022-11-02 21:01:38,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:38,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043851901] [2022-11-02 21:01:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:38,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:38,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:38,266 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:38,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2022-11-02 21:01:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:38,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 21:01:38,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:39,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:39,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:39,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043851901] [2022-11-02 21:01:39,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043851901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:39,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:39,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:39,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944169985] [2022-11-02 21:01:39,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:39,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:39,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:39,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:39,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:39,779 INFO L87 Difference]: Start difference. First operand 1590 states and 2089 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:40,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:40,679 INFO L93 Difference]: Finished difference Result 3209 states and 4468 transitions. [2022-11-02 21:01:40,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:40,680 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:40,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:40,682 INFO L225 Difference]: With dead ends: 3209 [2022-11-02 21:01:40,682 INFO L226 Difference]: Without dead ends: 2647 [2022-11-02 21:01:40,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:40,684 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 945 mSDsluCounter, 2881 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 3630 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:40,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 3630 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:01:40,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2022-11-02 21:01:40,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 1592. [2022-11-02 21:01:40,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1591 states have (on average 1.3136392206159648) internal successors, (2090), 1591 states have internal predecessors, (2090), 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 21:01:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2090 transitions. [2022-11-02 21:01:40,713 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2090 transitions. Word has length 172 [2022-11-02 21:01:40,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:40,713 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2090 transitions. [2022-11-02 21:01:40,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 21:01:40,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2090 transitions. [2022-11-02 21:01:40,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:40,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:40,715 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:40,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:40,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:40,915 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:40,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:40,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1209101429, now seen corresponding path program 1 times [2022-11-02 21:01:40,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:40,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776524884] [2022-11-02 21:01:40,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:40,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:40,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:40,918 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:40,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2022-11-02 21:01:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:41,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:41,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:41,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:41,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:41,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:41,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776524884] [2022-11-02 21:01:41,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776524884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:41,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:41,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:41,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051415035] [2022-11-02 21:01:41,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:41,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:41,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:41,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:41,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:41,987 INFO L87 Difference]: Start difference. First operand 1592 states and 2090 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:01:42,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:42,506 INFO L93 Difference]: Finished difference Result 2727 states and 3753 transitions. [2022-11-02 21:01:42,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:01:42,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2022-11-02 21:01:42,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:42,508 INFO L225 Difference]: With dead ends: 2727 [2022-11-02 21:01:42,508 INFO L226 Difference]: Without dead ends: 2167 [2022-11-02 21:01:42,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:01:42,509 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 711 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:42,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 2447 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:01:42,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2022-11-02 21:01:42,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 1584. [2022-11-02 21:01:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1583 states have (on average 1.3145925457991157) internal successors, (2081), 1583 states have internal predecessors, (2081), 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 21:01:42,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2081 transitions. [2022-11-02 21:01:42,538 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2081 transitions. Word has length 172 [2022-11-02 21:01:42,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:42,539 INFO L495 AbstractCegarLoop]: Abstraction has 1584 states and 2081 transitions. [2022-11-02 21:01:42,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 21:01:42,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2081 transitions. [2022-11-02 21:01:42,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:01:42,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:42,540 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:42,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (90)] Ended with exit code 0 [2022-11-02 21:01:42,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:42,741 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:42,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:42,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1889159799, now seen corresponding path program 1 times [2022-11-02 21:01:42,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:42,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115278578] [2022-11-02 21:01:42,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:42,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:42,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:42,743 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:42,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a342c23-b125-480f-a84e-20d50b8bed08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2022-11-02 21:01:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 213 conjunts are in the unsatisfiable core [2022-11-02 21:01:43,230 INFO L286 TraceCheckSpWp]: Computing forward predicates...