./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a935be40f33f2b14bb2430edd907c28a460e8da0e4611e1cc835e2a0e57c2b6a --- 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-4e7fbc6 [2022-11-23 02:16:01,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:16:01,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:16:01,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:16:01,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:16:01,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:16:01,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:16:01,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:16:01,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:16:01,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:16:01,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:16:01,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:16:01,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:16:01,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:16:01,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:16:01,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:16:01,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:16:01,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:16:01,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:16:01,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:16:01,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:16:01,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:16:01,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:16:01,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:16:01,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:16:01,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:16:01,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:16:01,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:16:01,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:16:01,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:16:01,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:16:01,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:16:01,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:16:01,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:16:01,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:16:01,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:16:01,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:16:01,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:16:01,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:16:01,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:16:01,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:16:01,803 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 02:16:01,838 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:16:01,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:16:01,843 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:16:01,843 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:16:01,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:16:01,844 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:16:01,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:16:01,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:16:01,845 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:16:01,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:16:01,846 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:16:01,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:16:01,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:16:01,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:16:01,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:16:01,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:16:01,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:16:01,847 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:16:01,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:16:01,847 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:16:01,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:16:01,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:16:01,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:16:01,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:16:01,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:16:01,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:16:01,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:16:01,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:16:01,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:16:01,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:16:01,850 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:16:01,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:16:01,851 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:16:01,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:16:01,851 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a935be40f33f2b14bb2430edd907c28a460e8da0e4611e1cc835e2a0e57c2b6a [2022-11-23 02:16:02,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:16:02,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:16:02,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:16:02,149 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:16:02,149 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:16:02,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/eca-rers2012/Problem12_label05.c [2022-11-23 02:16:05,130 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:16:05,738 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:16:05,739 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/sv-benchmarks/c/eca-rers2012/Problem12_label05.c [2022-11-23 02:16:05,777 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/data/cc86315d2/7c958bf5681245d6831155a630217e80/FLAG51208f520 [2022-11-23 02:16:05,796 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/data/cc86315d2/7c958bf5681245d6831155a630217e80 [2022-11-23 02:16:05,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:16:05,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:16:05,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:16:05,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:16:05,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:16:05,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:05" (1/1) ... [2022-11-23 02:16:05,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a86fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:05, skipping insertion in model container [2022-11-23 02:16:05,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:05" (1/1) ... [2022-11-23 02:16:05,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:16:05,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:16:06,224 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/sv-benchmarks/c/eca-rers2012/Problem12_label05.c[7297,7310] [2022-11-23 02:16:07,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:16:07,390 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:16:07,426 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/sv-benchmarks/c/eca-rers2012/Problem12_label05.c[7297,7310] [2022-11-23 02:16:08,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:16:08,060 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:16:08,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:08 WrapperNode [2022-11-23 02:16:08,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:16:08,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:16:08,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:16:08,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:16:08,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:08" (1/1) ... [2022-11-23 02:16:08,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:08" (1/1) ... [2022-11-23 02:16:08,598 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-11-23 02:16:08,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:16:08,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:16:08,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:16:08,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:16:08,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:08" (1/1) ... [2022-11-23 02:16:08,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:08" (1/1) ... [2022-11-23 02:16:08,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:08" (1/1) ... [2022-11-23 02:16:08,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:08" (1/1) ... [2022-11-23 02:16:08,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:08" (1/1) ... [2022-11-23 02:16:08,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:08" (1/1) ... [2022-11-23 02:16:08,909 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:08" (1/1) ... [2022-11-23 02:16:08,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:08" (1/1) ... [2022-11-23 02:16:09,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:16:09,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:16:09,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:16:09,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:16:09,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:08" (1/1) ... [2022-11-23 02:16:09,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:16:09,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:16:09,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:16:09,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:16:09,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:16:09,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:16:09,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:16:09,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:16:09,252 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:16:09,255 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:16:14,218 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:16:14,249 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:16:14,249 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 02:16:14,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:14 BoogieIcfgContainer [2022-11-23 02:16:14,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:16:14,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:16:14,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:16:14,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:16:14,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:16:05" (1/3) ... [2022-11-23 02:16:14,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f22a50f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:14, skipping insertion in model container [2022-11-23 02:16:14,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:08" (2/3) ... [2022-11-23 02:16:14,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f22a50f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:14, skipping insertion in model container [2022-11-23 02:16:14,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:14" (3/3) ... [2022-11-23 02:16:14,270 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label05.c [2022-11-23 02:16:14,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:16:14,291 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 02:16:14,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:16:14,390 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;@6b3c42dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:16:14,391 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 02:16:14,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:14,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-23 02:16:14,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:16:14,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:16:14,414 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:16:14,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:14,422 INFO L85 PathProgramCache]: Analyzing trace with hash 118092897, now seen corresponding path program 1 times [2022-11-23 02:16:14,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:14,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109922435] [2022-11-23 02:16:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:14,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:16:14,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:16:14,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109922435] [2022-11-23 02:16:14,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109922435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:16:14,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:16:14,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:16:14,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337077966] [2022-11-23 02:16:14,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:16:14,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:16:14,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:16:15,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:16:15,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:16:15,030 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 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 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:20,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:16:20,379 INFO L93 Difference]: Finished difference Result 2404 states and 4645 transitions. [2022-11-23 02:16:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:16:20,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-11-23 02:16:20,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:16:20,403 INFO L225 Difference]: With dead ends: 2404 [2022-11-23 02:16:20,403 INFO L226 Difference]: Without dead ends: 1506 [2022-11-23 02:16:20,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:16:20,413 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 761 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:16:20,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 525 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-23 02:16:20,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-11-23 02:16:20,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-11-23 02:16:20,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6066445182724252) internal successors, (2418), 1505 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:20,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2418 transitions. [2022-11-23 02:16:20,557 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2418 transitions. Word has length 59 [2022-11-23 02:16:20,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:16:20,558 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2418 transitions. [2022-11-23 02:16:20,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:20,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2418 transitions. [2022-11-23 02:16:20,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 02:16:20,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:16:20,562 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 02:16:20,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:16:20,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:16:20,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:20,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1600579005, now seen corresponding path program 1 times [2022-11-23 02:16:20,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:20,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791179262] [2022-11-23 02:16:20,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:20,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:20,801 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:16:20,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:16:20,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791179262] [2022-11-23 02:16:20,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791179262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:16:20,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:16:20,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:16:20,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807959798] [2022-11-23 02:16:20,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:16:20,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:16:20,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:16:20,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:16:20,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:16:20,807 INFO L87 Difference]: Start difference. First operand 1506 states and 2418 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:25,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:16:25,019 INFO L93 Difference]: Finished difference Result 4512 states and 7249 transitions. [2022-11-23 02:16:25,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:16:25,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2022-11-23 02:16:25,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:16:25,030 INFO L225 Difference]: With dead ends: 4512 [2022-11-23 02:16:25,030 INFO L226 Difference]: Without dead ends: 3008 [2022-11-23 02:16:25,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:16:25,037 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 774 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:16:25,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 449 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-23 02:16:25,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2022-11-23 02:16:25,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2022-11-23 02:16:25,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.4156967076820752) internal successors, (4257), 3007 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4257 transitions. [2022-11-23 02:16:25,113 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4257 transitions. Word has length 134 [2022-11-23 02:16:25,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:16:25,116 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4257 transitions. [2022-11-23 02:16:25,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:25,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4257 transitions. [2022-11-23 02:16:25,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-23 02:16:25,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:16:25,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 02:16:25,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:16:25,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:16:25,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:25,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1187891678, now seen corresponding path program 1 times [2022-11-23 02:16:25,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:25,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105750413] [2022-11-23 02:16:25,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:25,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:25,478 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:16:25,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:16:25,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105750413] [2022-11-23 02:16:25,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105750413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:16:25,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:16:25,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:16:25,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987634813] [2022-11-23 02:16:25,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:16:25,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:16:25,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:16:25,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:16:25,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:16:25,483 INFO L87 Difference]: Start difference. First operand 3008 states and 4257 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:31,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:16:31,809 INFO L93 Difference]: Finished difference Result 9769 states and 13601 transitions. [2022-11-23 02:16:31,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:16:31,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-11-23 02:16:31,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:16:31,833 INFO L225 Difference]: With dead ends: 9769 [2022-11-23 02:16:31,833 INFO L226 Difference]: Without dead ends: 6763 [2022-11-23 02:16:31,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:16:31,839 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 2180 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4712 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 5459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 4712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:16:31,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2180 Valid, 166 Invalid, 5459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 4712 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-23 02:16:31,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2022-11-23 02:16:31,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2022-11-23 02:16:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.3507837917775807) internal successors, (9134), 6762 states have internal predecessors, (9134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 9134 transitions. [2022-11-23 02:16:31,973 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 9134 transitions. Word has length 136 [2022-11-23 02:16:31,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:16:31,974 INFO L495 AbstractCegarLoop]: Abstraction has 6763 states and 9134 transitions. [2022-11-23 02:16:31,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:31,974 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 9134 transitions. [2022-11-23 02:16:31,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-23 02:16:31,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:16:31,977 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 02:16:31,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:16:31,978 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:16:31,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:31,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1567221644, now seen corresponding path program 1 times [2022-11-23 02:16:31,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:31,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691948625] [2022-11-23 02:16:31,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:31,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:16:32,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:16:32,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691948625] [2022-11-23 02:16:32,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691948625] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:16:32,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676537024] [2022-11-23 02:16:32,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:32,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:16:32,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:16:32,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:16:32,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:16:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:32,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 02:16:32,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:16:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-23 02:16:33,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:16:33,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676537024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:16:33,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:16:33,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-23 02:16:33,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307343520] [2022-11-23 02:16:33,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:16:33,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:16:33,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:16:33,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:16:33,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:16:33,120 INFO L87 Difference]: Start difference. First operand 6763 states and 9134 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:36,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:16:36,767 INFO L93 Difference]: Finished difference Result 15777 states and 21144 transitions. [2022-11-23 02:16:36,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:16:36,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 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 204 [2022-11-23 02:16:36,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:16:36,798 INFO L225 Difference]: With dead ends: 15777 [2022-11-23 02:16:36,799 INFO L226 Difference]: Without dead ends: 9767 [2022-11-23 02:16:36,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:16:36,806 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 712 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:16:36,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 156 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-23 02:16:36,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2022-11-23 02:16:36,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2022-11-23 02:16:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.2556829817734998) internal successors, (12263), 9766 states have internal predecessors, (12263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:36,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12263 transitions. [2022-11-23 02:16:36,988 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12263 transitions. Word has length 204 [2022-11-23 02:16:36,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:16:36,990 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 12263 transitions. [2022-11-23 02:16:36,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:36,990 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12263 transitions. [2022-11-23 02:16:36,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-11-23 02:16:36,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:16:36,999 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 02:16:37,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 02:16:37,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:16:37,210 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:16:37,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:37,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1920580750, now seen corresponding path program 1 times [2022-11-23 02:16:37,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:37,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131099687] [2022-11-23 02:16:37,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:37,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-23 02:16:37,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:16:37,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131099687] [2022-11-23 02:16:37,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131099687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:16:37,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:16:37,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:16:37,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104446612] [2022-11-23 02:16:37,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:16:37,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:16:37,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:16:37,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:16:37,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:16:37,726 INFO L87 Difference]: Start difference. First operand 9767 states and 12263 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:42,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:16:42,913 INFO L93 Difference]: Finished difference Result 27118 states and 34546 transitions. [2022-11-23 02:16:42,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:16:42,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 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 271 [2022-11-23 02:16:42,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:16:42,972 INFO L225 Difference]: With dead ends: 27118 [2022-11-23 02:16:42,972 INFO L226 Difference]: Without dead ends: 18030 [2022-11-23 02:16:42,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:16:42,982 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 776 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3717 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 4343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 3717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:16:42,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 365 Invalid, 4343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 3717 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-23 02:16:43,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18030 states. [2022-11-23 02:16:43,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18030 to 15775. [2022-11-23 02:16:43,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.1934195511601369) internal successors, (18825), 15774 states have internal predecessors, (18825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:43,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 18825 transitions. [2022-11-23 02:16:43,272 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 18825 transitions. Word has length 271 [2022-11-23 02:16:43,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:16:43,272 INFO L495 AbstractCegarLoop]: Abstraction has 15775 states and 18825 transitions. [2022-11-23 02:16:43,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:43,274 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 18825 transitions. [2022-11-23 02:16:43,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-11-23 02:16:43,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:16:43,282 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2022-11-23 02:16:43,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:16:43,283 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:16:43,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:43,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1934183296, now seen corresponding path program 1 times [2022-11-23 02:16:43,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:43,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237754106] [2022-11-23 02:16:43,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:43,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-23 02:16:43,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:16:43,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237754106] [2022-11-23 02:16:43,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237754106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:16:43,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:16:43,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:16:43,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113383683] [2022-11-23 02:16:43,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:16:43,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:16:43,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:16:43,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:16:43,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:16:43,751 INFO L87 Difference]: Start difference. First operand 15775 states and 18825 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:47,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:16:47,944 INFO L93 Difference]: Finished difference Result 39058 states and 47478 transitions. [2022-11-23 02:16:47,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:16:47,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 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 382 [2022-11-23 02:16:47,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:16:47,990 INFO L225 Difference]: With dead ends: 39058 [2022-11-23 02:16:47,991 INFO L226 Difference]: Without dead ends: 24036 [2022-11-23 02:16:48,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:16:48,007 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 693 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 2900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 670 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:16:48,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 430 Invalid, 2900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [670 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-23 02:16:48,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24036 states. [2022-11-23 02:16:48,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24036 to 23285. [2022-11-23 02:16:48,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23285 states, 23284 states have (on average 1.1873389451984195) internal successors, (27646), 23284 states have internal predecessors, (27646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:48,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23285 states to 23285 states and 27646 transitions. [2022-11-23 02:16:48,475 INFO L78 Accepts]: Start accepts. Automaton has 23285 states and 27646 transitions. Word has length 382 [2022-11-23 02:16:48,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:16:48,476 INFO L495 AbstractCegarLoop]: Abstraction has 23285 states and 27646 transitions. [2022-11-23 02:16:48,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:48,477 INFO L276 IsEmpty]: Start isEmpty. Operand 23285 states and 27646 transitions. [2022-11-23 02:16:48,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-11-23 02:16:48,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:16:48,499 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 02:16:48,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:16:48,499 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:16:48,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:48,500 INFO L85 PathProgramCache]: Analyzing trace with hash 268077626, now seen corresponding path program 1 times [2022-11-23 02:16:48,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:48,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404644458] [2022-11-23 02:16:48,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:48,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:48,892 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-23 02:16:48,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:16:48,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404644458] [2022-11-23 02:16:48,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404644458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:16:48,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:16:48,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:16:48,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954022580] [2022-11-23 02:16:48,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:16:48,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:16:48,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:16:48,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:16:48,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:16:48,897 INFO L87 Difference]: Start difference. First operand 23285 states and 27646 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:52,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:16:52,673 INFO L93 Difference]: Finished difference Result 54829 states and 66470 transitions. [2022-11-23 02:16:52,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:16:52,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 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 410 [2022-11-23 02:16:52,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:16:52,726 INFO L225 Difference]: With dead ends: 54829 [2022-11-23 02:16:52,727 INFO L226 Difference]: Without dead ends: 32297 [2022-11-23 02:16:52,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:16:52,743 INFO L413 NwaCegarLoop]: 1208 mSDtfsCounter, 680 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:16:52,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1216 Invalid, 2683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-23 02:16:52,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32297 states. [2022-11-23 02:16:53,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32297 to 30044. [2022-11-23 02:16:53,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30044 states, 30043 states have (on average 1.1742169556968345) internal successors, (35277), 30043 states have internal predecessors, (35277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:53,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30044 states to 30044 states and 35277 transitions. [2022-11-23 02:16:53,169 INFO L78 Accepts]: Start accepts. Automaton has 30044 states and 35277 transitions. Word has length 410 [2022-11-23 02:16:53,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:16:53,170 INFO L495 AbstractCegarLoop]: Abstraction has 30044 states and 35277 transitions. [2022-11-23 02:16:53,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:53,171 INFO L276 IsEmpty]: Start isEmpty. Operand 30044 states and 35277 transitions. [2022-11-23 02:16:53,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-23 02:16:53,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:16:53,183 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 02:16:53,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:16:53,183 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:16:53,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:53,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1998767152, now seen corresponding path program 1 times [2022-11-23 02:16:53,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:53,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153463606] [2022-11-23 02:16:53,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:53,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:53,508 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-23 02:16:53,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:16:53,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153463606] [2022-11-23 02:16:53,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153463606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:16:53,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:16:53,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:16:53,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586966655] [2022-11-23 02:16:53,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:16:53,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:16:53,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:16:53,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:16:53,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:16:53,511 INFO L87 Difference]: Start difference. First operand 30044 states and 35277 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:57,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:16:57,379 INFO L93 Difference]: Finished difference Result 68347 states and 81732 transitions. [2022-11-23 02:16:57,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:16:57,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 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 414 [2022-11-23 02:16:57,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:16:57,428 INFO L225 Difference]: With dead ends: 68347 [2022-11-23 02:16:57,428 INFO L226 Difference]: Without dead ends: 39056 [2022-11-23 02:16:57,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:16:57,450 INFO L413 NwaCegarLoop]: 1277 mSDtfsCounter, 673 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 2682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:16:57,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1285 Invalid, 2682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2236 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-23 02:16:57,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39056 states. [2022-11-23 02:16:58,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39056 to 39056. [2022-11-23 02:16:58,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39056 states, 39055 states have (on average 1.1549609525028806) internal successors, (45107), 39055 states have internal predecessors, (45107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:58,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39056 states to 39056 states and 45107 transitions. [2022-11-23 02:16:58,113 INFO L78 Accepts]: Start accepts. Automaton has 39056 states and 45107 transitions. Word has length 414 [2022-11-23 02:16:58,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:16:58,114 INFO L495 AbstractCegarLoop]: Abstraction has 39056 states and 45107 transitions. [2022-11-23 02:16:58,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:58,115 INFO L276 IsEmpty]: Start isEmpty. Operand 39056 states and 45107 transitions. [2022-11-23 02:16:58,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2022-11-23 02:16:58,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:16:58,126 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 02:16:58,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 02:16:58,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:16:58,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:58,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1512670714, now seen corresponding path program 1 times [2022-11-23 02:16:58,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:58,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486616662] [2022-11-23 02:16:58,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:58,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:17:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 320 proven. 159 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:17:00,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:17:00,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486616662] [2022-11-23 02:17:00,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486616662] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:17:00,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237915158] [2022-11-23 02:17:00,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:17:00,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:17:00,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:17:00,504 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:17:00,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:17:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:17:00,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 02:17:00,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:17:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 306 proven. 57 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-23 02:17:01,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:17:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 306 proven. 57 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-23 02:17:01,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237915158] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:17:01,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:17:01,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 11 [2022-11-23 02:17:01,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959038247] [2022-11-23 02:17:01,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:17:01,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:17:01,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:17:01,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:17:01,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:17:01,482 INFO L87 Difference]: Start difference. First operand 39056 states and 45107 transitions. Second operand has 11 states, 11 states have (on average 77.81818181818181) internal successors, (856), 11 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:47,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:17:47,110 INFO L93 Difference]: Finished difference Result 157100 states and 179561 transitions. [2022-11-23 02:17:47,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-23 02:17:47,111 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 77.81818181818181) internal successors, (856), 11 states have internal predecessors, (856), 0 states have call successors, (0), 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 418 [2022-11-23 02:17:47,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:17:47,230 INFO L225 Difference]: With dead ends: 157100 [2022-11-23 02:17:47,230 INFO L226 Difference]: Without dead ends: 114909 [2022-11-23 02:17:47,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 853 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=215, Invalid=777, Unknown=0, NotChecked=0, Total=992 [2022-11-23 02:17:47,259 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 18016 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 49157 mSolverCounterSat, 5112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18016 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 54269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5112 IncrementalHoareTripleChecker+Valid, 49157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:17:47,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18016 Valid, 360 Invalid, 54269 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5112 Valid, 49157 Invalid, 0 Unknown, 0 Unchecked, 43.2s Time] [2022-11-23 02:17:47,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114909 states. [2022-11-23 02:17:48,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114909 to 96883. [2022-11-23 02:17:48,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96883 states, 96882 states have (on average 1.1072748291736338) internal successors, (107275), 96882 states have internal predecessors, (107275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:48,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96883 states to 96883 states and 107275 transitions. [2022-11-23 02:17:48,601 INFO L78 Accepts]: Start accepts. Automaton has 96883 states and 107275 transitions. Word has length 418 [2022-11-23 02:17:48,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:17:48,604 INFO L495 AbstractCegarLoop]: Abstraction has 96883 states and 107275 transitions. [2022-11-23 02:17:48,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.81818181818181) internal successors, (856), 11 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:48,605 INFO L276 IsEmpty]: Start isEmpty. Operand 96883 states and 107275 transitions. [2022-11-23 02:17:48,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2022-11-23 02:17:48,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:17:48,615 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 02:17:48,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:17:48,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:17:48,822 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:17:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:17:48,823 INFO L85 PathProgramCache]: Analyzing trace with hash 160628491, now seen corresponding path program 1 times [2022-11-23 02:17:48,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:17:48,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541131853] [2022-11-23 02:17:48,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:17:48,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:17:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:17:49,260 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-23 02:17:49,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:17:49,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541131853] [2022-11-23 02:17:49,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541131853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:17:49,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:17:49,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:17:49,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161375216] [2022-11-23 02:17:49,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:17:49,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:17:49,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:17:49,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:17:49,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:17:49,264 INFO L87 Difference]: Start difference. First operand 96883 states and 107275 transitions. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:54,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:17:54,924 INFO L93 Difference]: Finished difference Result 250840 states and 279513 transitions. [2022-11-23 02:17:54,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:17:54,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 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 467 [2022-11-23 02:17:54,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:17:55,117 INFO L225 Difference]: With dead ends: 250840 [2022-11-23 02:17:55,117 INFO L226 Difference]: Without dead ends: 153208 [2022-11-23 02:17:55,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:17:55,160 INFO L413 NwaCegarLoop]: 1339 mSDtfsCounter, 592 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2168 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 2168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:17:55,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 1346 Invalid, 2848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 2168 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-23 02:17:55,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153208 states. [2022-11-23 02:17:57,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153208 to 147951. [2022-11-23 02:17:57,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147951 states, 147950 states have (on average 1.088435282189929) internal successors, (161034), 147950 states have internal predecessors, (161034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147951 states to 147951 states and 161034 transitions. [2022-11-23 02:17:58,066 INFO L78 Accepts]: Start accepts. Automaton has 147951 states and 161034 transitions. Word has length 467 [2022-11-23 02:17:58,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:17:58,067 INFO L495 AbstractCegarLoop]: Abstraction has 147951 states and 161034 transitions. [2022-11-23 02:17:58,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:58,068 INFO L276 IsEmpty]: Start isEmpty. Operand 147951 states and 161034 transitions. [2022-11-23 02:17:58,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2022-11-23 02:17:58,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:17:58,088 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:17:58,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 02:17:58,089 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:17:58,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:17:58,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1240427921, now seen corresponding path program 1 times [2022-11-23 02:17:58,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:17:58,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254578636] [2022-11-23 02:17:58,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:17:58,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:17:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:17:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-23 02:17:59,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:17:59,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254578636] [2022-11-23 02:17:59,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254578636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:17:59,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:17:59,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:17:59,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395535590] [2022-11-23 02:17:59,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:17:59,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:17:59,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:17:59,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:17:59,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:17:59,082 INFO L87 Difference]: Start difference. First operand 147951 states and 161034 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:05,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:18:05,202 INFO L93 Difference]: Finished difference Result 346217 states and 379809 transitions. [2022-11-23 02:18:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:18:05,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 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 489 [2022-11-23 02:18:05,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:18:05,476 INFO L225 Difference]: With dead ends: 346217 [2022-11-23 02:18:05,476 INFO L226 Difference]: Without dead ends: 191509 [2022-11-23 02:18:05,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:18:05,554 INFO L413 NwaCegarLoop]: 1268 mSDtfsCounter, 727 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:18:05,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1276 Invalid, 2806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-23 02:18:05,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191509 states. [2022-11-23 02:18:07,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191509 to 178742. [2022-11-23 02:18:08,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178742 states, 178741 states have (on average 1.0773913092127716) internal successors, (192574), 178741 states have internal predecessors, (192574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:08,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178742 states to 178742 states and 192574 transitions. [2022-11-23 02:18:08,452 INFO L78 Accepts]: Start accepts. Automaton has 178742 states and 192574 transitions. Word has length 489 [2022-11-23 02:18:08,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:18:08,453 INFO L495 AbstractCegarLoop]: Abstraction has 178742 states and 192574 transitions. [2022-11-23 02:18:08,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:08,454 INFO L276 IsEmpty]: Start isEmpty. Operand 178742 states and 192574 transitions. [2022-11-23 02:18:08,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2022-11-23 02:18:08,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:18:08,466 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 02:18:08,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 02:18:08,467 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:18:08,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:08,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1612377258, now seen corresponding path program 1 times [2022-11-23 02:18:08,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:08,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379455950] [2022-11-23 02:18:08,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:08,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 588 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-23 02:18:08,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:08,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379455950] [2022-11-23 02:18:08,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379455950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:08,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:08,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:18:08,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213675630] [2022-11-23 02:18:08,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:08,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:18:08,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:08,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:18:08,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:18:08,894 INFO L87 Difference]: Start difference. First operand 178742 states and 192574 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:15,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:18:15,006 INFO L93 Difference]: Finished difference Result 398036 states and 430774 transitions. [2022-11-23 02:18:15,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:18:15,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 491 [2022-11-23 02:18:15,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:18:15,423 INFO L225 Difference]: With dead ends: 398036 [2022-11-23 02:18:15,424 INFO L226 Difference]: Without dead ends: 219296 [2022-11-23 02:18:15,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:18:15,932 INFO L413 NwaCegarLoop]: 1205 mSDtfsCounter, 667 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:18:15,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1213 Invalid, 2781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-23 02:18:16,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219296 states. [2022-11-23 02:18:18,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219296 to 213288. [2022-11-23 02:18:18,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213288 states, 213287 states have (on average 1.0686680388396854) internal successors, (227933), 213287 states have internal predecessors, (227933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:19,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213288 states to 213288 states and 227933 transitions. [2022-11-23 02:18:19,419 INFO L78 Accepts]: Start accepts. Automaton has 213288 states and 227933 transitions. Word has length 491 [2022-11-23 02:18:19,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:18:19,420 INFO L495 AbstractCegarLoop]: Abstraction has 213288 states and 227933 transitions. [2022-11-23 02:18:19,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:19,421 INFO L276 IsEmpty]: Start isEmpty. Operand 213288 states and 227933 transitions. [2022-11-23 02:18:19,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2022-11-23 02:18:19,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:18:19,445 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:19,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 02:18:19,446 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:18:19,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:19,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1352181389, now seen corresponding path program 1 times [2022-11-23 02:18:19,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:19,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648635922] [2022-11-23 02:18:19,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:19,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:20,592 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 553 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-23 02:18:20,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:20,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648635922] [2022-11-23 02:18:20,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648635922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:20,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:20,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:18:20,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674351054] [2022-11-23 02:18:20,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:20,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:18:20,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:20,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:18:20,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:18:20,596 INFO L87 Difference]: Start difference. First operand 213288 states and 227933 transitions. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:26,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:18:26,096 INFO L93 Difference]: Finished difference Result 429578 states and 458892 transitions. [2022-11-23 02:18:26,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:18:26,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 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 546 [2022-11-23 02:18:26,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:18:26,427 INFO L225 Difference]: With dead ends: 429578 [2022-11-23 02:18:26,427 INFO L226 Difference]: Without dead ends: 214790 [2022-11-23 02:18:26,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:18:26,546 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 735 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 2629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-23 02:18:26,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 896 Invalid, 2629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 2116 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-23 02:18:26,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214790 states. [2022-11-23 02:18:29,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214790 to 208782. [2022-11-23 02:18:29,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208782 states, 208781 states have (on average 1.0612220460674104) internal successors, (221563), 208781 states have internal predecessors, (221563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:30,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208782 states to 208782 states and 221563 transitions. [2022-11-23 02:18:30,329 INFO L78 Accepts]: Start accepts. Automaton has 208782 states and 221563 transitions. Word has length 546 [2022-11-23 02:18:30,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:18:30,331 INFO L495 AbstractCegarLoop]: Abstraction has 208782 states and 221563 transitions. [2022-11-23 02:18:30,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand 208782 states and 221563 transitions. [2022-11-23 02:18:30,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2022-11-23 02:18:30,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:18:30,345 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:30,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 02:18:30,345 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:18:30,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:30,346 INFO L85 PathProgramCache]: Analyzing trace with hash 811012919, now seen corresponding path program 1 times [2022-11-23 02:18:30,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:30,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510354455] [2022-11-23 02:18:30,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:30,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 627 proven. 54 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-11-23 02:18:31,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:31,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510354455] [2022-11-23 02:18:31,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510354455] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:18:31,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743964170] [2022-11-23 02:18:31,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:31,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:31,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:18:31,998 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:18:32,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:18:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:32,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:18:32,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:18:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 681 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-11-23 02:18:33,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:18:33,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743964170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:33,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:18:33,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-23 02:18:33,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159354257] [2022-11-23 02:18:33,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:33,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:18:33,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:33,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:18:33,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:18:33,197 INFO L87 Difference]: Start difference. First operand 208782 states and 221563 transitions. Second operand has 4 states, 4 states have (on average 111.25) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:40,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:18:40,992 INFO L93 Difference]: Finished difference Result 419815 states and 445403 transitions. [2022-11-23 02:18:40,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:18:40,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 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 569 [2022-11-23 02:18:40,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:18:41,360 INFO L225 Difference]: With dead ends: 419815 [2022-11-23 02:18:41,360 INFO L226 Difference]: Without dead ends: 211786 [2022-11-23 02:18:41,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:18:41,451 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 1299 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3881 mSolverCounterSat, 825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 4706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 825 IncrementalHoareTripleChecker+Valid, 3881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:18:41,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 405 Invalid, 4706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [825 Valid, 3881 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-23 02:18:41,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211786 states. [2022-11-23 02:18:44,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211786 to 201272. [2022-11-23 02:18:44,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201272 states, 201271 states have (on average 1.0388431517704986) internal successors, (209089), 201271 states have internal predecessors, (209089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201272 states to 201272 states and 209089 transitions. [2022-11-23 02:18:44,533 INFO L78 Accepts]: Start accepts. Automaton has 201272 states and 209089 transitions. Word has length 569 [2022-11-23 02:18:44,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:18:44,534 INFO L495 AbstractCegarLoop]: Abstraction has 201272 states and 209089 transitions. [2022-11-23 02:18:44,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:44,534 INFO L276 IsEmpty]: Start isEmpty. Operand 201272 states and 209089 transitions. [2022-11-23 02:18:44,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2022-11-23 02:18:44,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:18:44,550 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 02:18:44,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 02:18:44,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_010cb173-9832-41e7-b241-b2eed3228ba3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 02:18:44,751 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:18:44,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:44,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1385001458, now seen corresponding path program 1 times [2022-11-23 02:18:44,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:44,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950653835] [2022-11-23 02:18:44,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:44,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat