./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label49.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label49.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8 --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 dec1bbc02769dd31e26f469fb506a4ddb52de0bafeec9822b4b5ac4641b246bd --- 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-e04fb08 [2022-11-16 12:23:32,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:23:32,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:23:32,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:23:32,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:23:32,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:23:32,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:23:32,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:23:32,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:23:32,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:23:32,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:23:32,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:23:32,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:23:32,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:23:32,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:23:32,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:23:32,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:23:32,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:23:32,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:23:32,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:23:32,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:23:32,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:23:32,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:23:32,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:23:32,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:23:32,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:23:32,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:23:32,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:23:32,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:23:32,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:23:32,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:23:32,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:23:32,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:23:32,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:23:32,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:23:32,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:23:32,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:23:32,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:23:32,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:23:32,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:23:32,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:23:32,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:23:32,830 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:23:32,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:23:32,831 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:23:32,831 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:23:32,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:23:32,832 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:23:32,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:23:32,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:23:32,833 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:23:32,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:23:32,834 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:23:32,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:23:32,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:23:32,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:23:32,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:23:32,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:23:32,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:23:32,836 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:23:32,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:23:32,836 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:23:32,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:23:32,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:23:32,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:23:32,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:23:32,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:23:32,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:23:32,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:23:32,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:23:32,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:23:32,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:23:32,839 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:23:32,839 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:23:32,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:23:32,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dec1bbc02769dd31e26f469fb506a4ddb52de0bafeec9822b4b5ac4641b246bd [2022-11-16 12:23:33,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:23:33,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:23:33,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:23:33,140 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:23:33,141 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:23:33,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/eca-rers2012/Problem13_label49.c [2022-11-16 12:23:33,217 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/data/c5dc6f4c1/bda8f8e3cb114cf39cde3c6391b97593/FLAG9356f62b8 [2022-11-16 12:23:33,958 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:23:33,959 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/sv-benchmarks/c/eca-rers2012/Problem13_label49.c [2022-11-16 12:23:34,002 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/data/c5dc6f4c1/bda8f8e3cb114cf39cde3c6391b97593/FLAG9356f62b8 [2022-11-16 12:23:34,508 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/data/c5dc6f4c1/bda8f8e3cb114cf39cde3c6391b97593 [2022-11-16 12:23:34,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:23:34,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:23:34,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:23:34,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:23:34,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:23:34,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:23:34" (1/1) ... [2022-11-16 12:23:34,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ae84a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:34, skipping insertion in model container [2022-11-16 12:23:34,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:23:34" (1/1) ... [2022-11-16 12:23:34,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:23:34,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:23:35,061 WARN L229 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_ea35bc9d-b501-487a-a1ca-edca494f4c9f/sv-benchmarks/c/eca-rers2012/Problem13_label49.c[8258,8271] [2022-11-16 12:23:36,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:23:36,104 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:23:36,145 WARN L229 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_ea35bc9d-b501-487a-a1ca-edca494f4c9f/sv-benchmarks/c/eca-rers2012/Problem13_label49.c[8258,8271] [2022-11-16 12:23:36,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:23:36,873 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:23:36,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:36 WrapperNode [2022-11-16 12:23:36,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:23:36,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:23:36,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:23:36,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:23:36,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:36" (1/1) ... [2022-11-16 12:23:36,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:36" (1/1) ... [2022-11-16 12:23:37,483 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-16 12:23:37,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:23:37,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:23:37,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:23:37,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:23:37,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:36" (1/1) ... [2022-11-16 12:23:37,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:36" (1/1) ... [2022-11-16 12:23:37,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:36" (1/1) ... [2022-11-16 12:23:37,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:36" (1/1) ... [2022-11-16 12:23:37,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:36" (1/1) ... [2022-11-16 12:23:38,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:36" (1/1) ... [2022-11-16 12:23:38,069 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:36" (1/1) ... [2022-11-16 12:23:38,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:36" (1/1) ... [2022-11-16 12:23:38,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:23:38,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:23:38,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:23:38,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:23:38,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:36" (1/1) ... [2022-11-16 12:23:38,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:23:38,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:38,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:23:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:23:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:23:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:23:38,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:23:38,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:23:38,501 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:23:38,503 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:23:45,461 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:23:45,484 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:23:45,484 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:23:45,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:23:45 BoogieIcfgContainer [2022-11-16 12:23:45,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:23:45,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:23:45,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:23:45,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:23:45,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:23:34" (1/3) ... [2022-11-16 12:23:45,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cadc417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:23:45, skipping insertion in model container [2022-11-16 12:23:45,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:36" (2/3) ... [2022-11-16 12:23:45,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cadc417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:23:45, skipping insertion in model container [2022-11-16 12:23:45,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:23:45" (3/3) ... [2022-11-16 12:23:45,501 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label49.c [2022-11-16 12:23:45,523 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:23:45,524 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:23:45,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:23:45,649 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;@7f3b868b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:23:45,650 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:23:45,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:45,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 12:23:45,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:45,671 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] [2022-11-16 12:23:45,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:45,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:45,679 INFO L85 PathProgramCache]: Analyzing trace with hash -2074400678, now seen corresponding path program 1 times [2022-11-16 12:23:45,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:45,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420691170] [2022-11-16 12:23:45,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:45,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:46,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:46,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:46,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420691170] [2022-11-16 12:23:46,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420691170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:46,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:46,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:23:46,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926111932] [2022-11-16 12:23:46,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:46,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:23:46,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:46,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:23:46,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:46,126 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:51,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:51,950 INFO L93 Difference]: Finished difference Result 3035 states and 5643 transitions. [2022-11-16 12:23:51,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:51,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-16 12:23:51,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:51,977 INFO L225 Difference]: With dead ends: 3035 [2022-11-16 12:23:51,977 INFO L226 Difference]: Without dead ends: 1873 [2022-11-16 12:23:51,983 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 [2022-11-16 12:23:51,987 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 847 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:51,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1145 Invalid, 3363 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [858 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-16 12:23:52,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2022-11-16 12:23:52,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1859. [2022-11-16 12:23:52,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1858 states have (on average 1.5441334768568353) internal successors, (2869), 1858 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:52,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2869 transitions. [2022-11-16 12:23:52,111 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2869 transitions. Word has length 58 [2022-11-16 12:23:52,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:52,112 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 2869 transitions. [2022-11-16 12:23:52,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:52,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2869 transitions. [2022-11-16 12:23:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-16 12:23:52,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:52,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:52,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:23:52,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:52,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:52,118 INFO L85 PathProgramCache]: Analyzing trace with hash 463715077, now seen corresponding path program 1 times [2022-11-16 12:23:52,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:52,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181684193] [2022-11-16 12:23:52,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:52,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:52,491 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:52,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:52,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181684193] [2022-11-16 12:23:52,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181684193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:52,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:52,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:23:52,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460278841] [2022-11-16 12:23:52,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:52,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:23:52,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:52,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:23:52,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:52,496 INFO L87 Difference]: Start difference. First operand 1859 states and 2869 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:57,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:57,581 INFO L93 Difference]: Finished difference Result 5317 states and 8229 transitions. [2022-11-16 12:23:57,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:57,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2022-11-16 12:23:57,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:57,596 INFO L225 Difference]: With dead ends: 5317 [2022-11-16 12:23:57,597 INFO L226 Difference]: Without dead ends: 3460 [2022-11-16 12:23:57,605 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 [2022-11-16 12:23:57,608 INFO L413 NwaCegarLoop]: 1039 mSDtfsCounter, 826 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:57,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1192 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-16 12:23:57,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2022-11-16 12:23:57,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3459. [2022-11-16 12:23:57,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3459 states, 3458 states have (on average 1.3805668016194332) internal successors, (4774), 3458 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:57,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 4774 transitions. [2022-11-16 12:23:57,693 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 4774 transitions. Word has length 130 [2022-11-16 12:23:57,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:57,697 INFO L495 AbstractCegarLoop]: Abstraction has 3459 states and 4774 transitions. [2022-11-16 12:23:57,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:57,698 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 4774 transitions. [2022-11-16 12:23:57,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-16 12:23:57,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:57,712 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:57,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:23:57,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:57,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:57,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1209172164, now seen corresponding path program 1 times [2022-11-16 12:23:57,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:57,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548505094] [2022-11-16 12:23:57,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:57,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:58,382 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:58,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:58,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548505094] [2022-11-16 12:23:58,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548505094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:58,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:58,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:23:58,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122845727] [2022-11-16 12:23:58,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:58,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:58,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:58,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:58,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:23:58,387 INFO L87 Difference]: Start difference. First operand 3459 states and 4774 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:05,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:05,426 INFO L93 Difference]: Finished difference Result 10870 states and 14768 transitions. [2022-11-16 12:24:05,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:24:05,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2022-11-16 12:24:05,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:05,455 INFO L225 Difference]: With dead ends: 10870 [2022-11-16 12:24:05,455 INFO L226 Difference]: Without dead ends: 7413 [2022-11-16 12:24:05,460 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 [2022-11-16 12:24:05,461 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 2582 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 4117 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 4948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 4117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:05,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2582 Valid, 1003 Invalid, 4948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 4117 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-16 12:24:05,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7413 states. [2022-11-16 12:24:05,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7413 to 7412. [2022-11-16 12:24:05,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7412 states, 7411 states have (on average 1.2698691134799622) internal successors, (9411), 7411 states have internal predecessors, (9411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7412 states to 7412 states and 9411 transitions. [2022-11-16 12:24:05,648 INFO L78 Accepts]: Start accepts. Automaton has 7412 states and 9411 transitions. Word has length 144 [2022-11-16 12:24:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:05,648 INFO L495 AbstractCegarLoop]: Abstraction has 7412 states and 9411 transitions. [2022-11-16 12:24:05,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:05,649 INFO L276 IsEmpty]: Start isEmpty. Operand 7412 states and 9411 transitions. [2022-11-16 12:24:05,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-16 12:24:05,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:05,653 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, 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] [2022-11-16 12:24:05,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:24:05,653 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:05,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:05,666 INFO L85 PathProgramCache]: Analyzing trace with hash -56416910, now seen corresponding path program 1 times [2022-11-16 12:24:05,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:05,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368863618] [2022-11-16 12:24:05,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:05,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-16 12:24:05,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:05,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368863618] [2022-11-16 12:24:05,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368863618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:05,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:05,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:24:05,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812144058] [2022-11-16 12:24:05,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:05,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:24:05,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:05,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:24:05,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:24:05,958 INFO L87 Difference]: Start difference. First operand 7412 states and 9411 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:10,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:10,875 INFO L93 Difference]: Finished difference Result 20357 states and 26252 transitions. [2022-11-16 12:24:10,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:24:10,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 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 225 [2022-11-16 12:24:10,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:10,918 INFO L225 Difference]: With dead ends: 20357 [2022-11-16 12:24:10,919 INFO L226 Difference]: Without dead ends: 13734 [2022-11-16 12:24:10,928 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 [2022-11-16 12:24:10,929 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 889 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:10,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 980 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-16 12:24:10,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13734 states. [2022-11-16 12:24:11,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13734 to 12937. [2022-11-16 12:24:11,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12937 states, 12936 states have (on average 1.215213358070501) internal successors, (15720), 12936 states have internal predecessors, (15720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:11,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12937 states to 12937 states and 15720 transitions. [2022-11-16 12:24:11,288 INFO L78 Accepts]: Start accepts. Automaton has 12937 states and 15720 transitions. Word has length 225 [2022-11-16 12:24:11,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:11,289 INFO L495 AbstractCegarLoop]: Abstraction has 12937 states and 15720 transitions. [2022-11-16 12:24:11,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:11,291 INFO L276 IsEmpty]: Start isEmpty. Operand 12937 states and 15720 transitions. [2022-11-16 12:24:11,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-16 12:24:11,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:11,296 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, 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] [2022-11-16 12:24:11,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:24:11,296 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:11,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:11,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1823781410, now seen corresponding path program 1 times [2022-11-16 12:24:11,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:11,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592188762] [2022-11-16 12:24:11,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:11,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:11,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:11,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592188762] [2022-11-16 12:24:11,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592188762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:11,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:11,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:24:11,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968384576] [2022-11-16 12:24:11,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:11,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:24:11,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:11,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:24:11,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:24:11,619 INFO L87 Difference]: Start difference. First operand 12937 states and 15720 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:16,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:16,319 INFO L93 Difference]: Finished difference Result 31392 states and 39119 transitions. [2022-11-16 12:24:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:24:16,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 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 257 [2022-11-16 12:24:16,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:16,355 INFO L225 Difference]: With dead ends: 31392 [2022-11-16 12:24:16,355 INFO L226 Difference]: Without dead ends: 19244 [2022-11-16 12:24:16,369 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 [2022-11-16 12:24:16,370 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 858 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:16,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 926 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-16 12:24:16,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19244 states. [2022-11-16 12:24:16,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19244 to 18447. [2022-11-16 12:24:16,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18447 states, 18446 states have (on average 1.2024287108316165) internal successors, (22180), 18446 states have internal predecessors, (22180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:16,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18447 states to 18447 states and 22180 transitions. [2022-11-16 12:24:16,670 INFO L78 Accepts]: Start accepts. Automaton has 18447 states and 22180 transitions. Word has length 257 [2022-11-16 12:24:16,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:16,671 INFO L495 AbstractCegarLoop]: Abstraction has 18447 states and 22180 transitions. [2022-11-16 12:24:16,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:16,675 INFO L276 IsEmpty]: Start isEmpty. Operand 18447 states and 22180 transitions. [2022-11-16 12:24:16,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-16 12:24:16,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:16,685 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:16,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:24:16,685 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:16,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:16,687 INFO L85 PathProgramCache]: Analyzing trace with hash 988861624, now seen corresponding path program 1 times [2022-11-16 12:24:16,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:16,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974927161] [2022-11-16 12:24:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:16,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:17,095 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-16 12:24:17,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:17,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974927161] [2022-11-16 12:24:17,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974927161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:17,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:17,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:24:17,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796713484] [2022-11-16 12:24:17,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:17,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:24:17,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:17,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:24:17,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:24:17,099 INFO L87 Difference]: Start difference. First operand 18447 states and 22180 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:22,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:22,066 INFO L93 Difference]: Finished difference Result 42412 states and 52037 transitions. [2022-11-16 12:24:22,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:24:22,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 346 [2022-11-16 12:24:22,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:22,123 INFO L225 Difference]: With dead ends: 42412 [2022-11-16 12:24:22,123 INFO L226 Difference]: Without dead ends: 24754 [2022-11-16 12:24:22,143 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 [2022-11-16 12:24:22,144 INFO L413 NwaCegarLoop]: 1796 mSDtfsCounter, 812 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 3265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:22,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 1947 Invalid, 3265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-16 12:24:22,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24754 states. [2022-11-16 12:24:22,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24754 to 23962. [2022-11-16 12:24:22,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23962 states, 23961 states have (on average 1.1787070656483452) internal successors, (28243), 23961 states have internal predecessors, (28243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:22,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23962 states to 23962 states and 28243 transitions. [2022-11-16 12:24:22,514 INFO L78 Accepts]: Start accepts. Automaton has 23962 states and 28243 transitions. Word has length 346 [2022-11-16 12:24:22,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:22,515 INFO L495 AbstractCegarLoop]: Abstraction has 23962 states and 28243 transitions. [2022-11-16 12:24:22,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:22,515 INFO L276 IsEmpty]: Start isEmpty. Operand 23962 states and 28243 transitions. [2022-11-16 12:24:22,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-11-16 12:24:22,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:22,607 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:22,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:24:22,608 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:22,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:22,609 INFO L85 PathProgramCache]: Analyzing trace with hash 522484062, now seen corresponding path program 1 times [2022-11-16 12:24:22,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:22,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514721321] [2022-11-16 12:24:22,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:22,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 401 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-16 12:24:22,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:22,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514721321] [2022-11-16 12:24:22,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514721321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:22,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:22,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:24:22,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388177767] [2022-11-16 12:24:22,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:22,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:24:22,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:22,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:24:22,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:24:22,987 INFO L87 Difference]: Start difference. First operand 23962 states and 28243 transitions. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:32,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:32,531 INFO L93 Difference]: Finished difference Result 89062 states and 105283 transitions. [2022-11-16 12:24:32,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:24:32,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 355 [2022-11-16 12:24:32,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:32,657 INFO L225 Difference]: With dead ends: 89062 [2022-11-16 12:24:32,657 INFO L226 Difference]: Without dead ends: 65889 [2022-11-16 12:24:32,684 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 [2022-11-16 12:24:32,687 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 1732 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6611 mSolverCounterSat, 1142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 7753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1142 IncrementalHoareTripleChecker+Valid, 6611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:32,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 678 Invalid, 7753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1142 Valid, 6611 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-16 12:24:32,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65889 states. [2022-11-16 12:24:33,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65889 to 64189. [2022-11-16 12:24:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64189 states, 64188 states have (on average 1.1559325730666168) internal successors, (74197), 64188 states have internal predecessors, (74197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:33,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64189 states to 64189 states and 74197 transitions. [2022-11-16 12:24:33,526 INFO L78 Accepts]: Start accepts. Automaton has 64189 states and 74197 transitions. Word has length 355 [2022-11-16 12:24:33,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:33,527 INFO L495 AbstractCegarLoop]: Abstraction has 64189 states and 74197 transitions. [2022-11-16 12:24:33,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:33,528 INFO L276 IsEmpty]: Start isEmpty. Operand 64189 states and 74197 transitions. [2022-11-16 12:24:33,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-11-16 12:24:33,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:33,536 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, 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] [2022-11-16 12:24:33,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:24:33,537 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:33,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:33,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1586030933, now seen corresponding path program 1 times [2022-11-16 12:24:33,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:33,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738591736] [2022-11-16 12:24:33,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:33,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:34,140 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-16 12:24:34,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:34,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738591736] [2022-11-16 12:24:34,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738591736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:34,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:34,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:24:34,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909404146] [2022-11-16 12:24:34,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:34,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:24:34,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:34,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:24:34,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:24:34,143 INFO L87 Difference]: Start difference. First operand 64189 states and 74197 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:39,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:39,086 INFO L93 Difference]: Finished difference Result 140992 states and 162393 transitions. [2022-11-16 12:24:39,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:24:39,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 355 [2022-11-16 12:24:39,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:39,182 INFO L225 Difference]: With dead ends: 140992 [2022-11-16 12:24:39,183 INFO L226 Difference]: Without dead ends: 77592 [2022-11-16 12:24:39,224 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 [2022-11-16 12:24:39,225 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 730 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:39,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1199 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-16 12:24:39,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77592 states. [2022-11-16 12:24:40,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77592 to 76794. [2022-11-16 12:24:40,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76794 states, 76793 states have (on average 1.1395830349120362) internal successors, (87512), 76793 states have internal predecessors, (87512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:40,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76794 states to 76794 states and 87512 transitions. [2022-11-16 12:24:40,270 INFO L78 Accepts]: Start accepts. Automaton has 76794 states and 87512 transitions. Word has length 355 [2022-11-16 12:24:40,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:40,270 INFO L495 AbstractCegarLoop]: Abstraction has 76794 states and 87512 transitions. [2022-11-16 12:24:40,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:40,271 INFO L276 IsEmpty]: Start isEmpty. Operand 76794 states and 87512 transitions. [2022-11-16 12:24:40,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-11-16 12:24:40,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:40,277 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, 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, 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] [2022-11-16 12:24:40,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:24:40,278 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:40,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:40,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1356205505, now seen corresponding path program 1 times [2022-11-16 12:24:40,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:40,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155331321] [2022-11-16 12:24:40,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:40,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 280 proven. 113 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-16 12:24:42,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:42,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155331321] [2022-11-16 12:24:42,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155331321] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:24:42,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719658777] [2022-11-16 12:24:42,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:42,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:42,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:24:42,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:24:42,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:24:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:43,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:24:43,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-16 12:24:43,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:43,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719658777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:43,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:24:43,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-16 12:24:43,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994901980] [2022-11-16 12:24:43,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:43,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:24:43,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:43,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:24:43,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:24:43,291 INFO L87 Difference]: Start difference. First operand 76794 states and 87512 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:48,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:48,010 INFO L93 Difference]: Finished difference Result 152797 states and 174229 transitions. [2022-11-16 12:24:48,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:24:48,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 384 [2022-11-16 12:24:48,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:48,114 INFO L225 Difference]: With dead ends: 152797 [2022-11-16 12:24:48,114 INFO L226 Difference]: Without dead ends: 76792 [2022-11-16 12:24:48,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:24:48,146 INFO L413 NwaCegarLoop]: 1362 mSDtfsCounter, 1122 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:48,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 1443 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-16 12:24:48,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76792 states. [2022-11-16 12:24:48,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76792 to 76004. [2022-11-16 12:24:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76004 states, 76003 states have (on average 1.1082325697669828) internal successors, (84229), 76003 states have internal predecessors, (84229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:49,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76004 states to 76004 states and 84229 transitions. [2022-11-16 12:24:49,403 INFO L78 Accepts]: Start accepts. Automaton has 76004 states and 84229 transitions. Word has length 384 [2022-11-16 12:24:49,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:49,404 INFO L495 AbstractCegarLoop]: Abstraction has 76004 states and 84229 transitions. [2022-11-16 12:24:49,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:49,405 INFO L276 IsEmpty]: Start isEmpty. Operand 76004 states and 84229 transitions. [2022-11-16 12:24:49,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-16 12:24:49,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:49,435 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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:49,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:49,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:49,641 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:49,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:49,642 INFO L85 PathProgramCache]: Analyzing trace with hash 166243839, now seen corresponding path program 1 times [2022-11-16 12:24:49,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:49,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557110777] [2022-11-16 12:24:49,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:49,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-16 12:24:50,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:50,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557110777] [2022-11-16 12:24:50,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557110777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:50,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:50,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:24:50,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176643236] [2022-11-16 12:24:50,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:50,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:24:50,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:50,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:24:50,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:24:50,188 INFO L87 Difference]: Start difference. First operand 76004 states and 84229 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:55,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:55,477 INFO L93 Difference]: Finished difference Result 170117 states and 190568 transitions. [2022-11-16 12:24:55,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:24:55,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 [2022-11-16 12:24:55,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:55,602 INFO L225 Difference]: With dead ends: 170117 [2022-11-16 12:24:55,603 INFO L226 Difference]: Without dead ends: 94902 [2022-11-16 12:24:55,635 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 [2022-11-16 12:24:55,638 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 905 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2415 mSolverCounterSat, 944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 3359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 944 IncrementalHoareTripleChecker+Valid, 2415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:55,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 907 Invalid, 3359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [944 Valid, 2415 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-16 12:24:55,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94902 states. [2022-11-16 12:24:56,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94902 to 94884. [2022-11-16 12:24:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94884 states, 94883 states have (on average 1.114235426788782) internal successors, (105722), 94883 states have internal predecessors, (105722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:57,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94884 states to 94884 states and 105722 transitions. [2022-11-16 12:24:57,227 INFO L78 Accepts]: Start accepts. Automaton has 94884 states and 105722 transitions. Word has length 414 [2022-11-16 12:24:57,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:57,229 INFO L495 AbstractCegarLoop]: Abstraction has 94884 states and 105722 transitions. [2022-11-16 12:24:57,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:57,229 INFO L276 IsEmpty]: Start isEmpty. Operand 94884 states and 105722 transitions. [2022-11-16 12:24:57,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-11-16 12:24:57,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:57,242 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, 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, 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] [2022-11-16 12:24:57,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:24:57,243 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:57,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:57,243 INFO L85 PathProgramCache]: Analyzing trace with hash 296355202, now seen corresponding path program 1 times [2022-11-16 12:24:57,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:57,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637896074] [2022-11-16 12:24:57,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:57,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-16 12:24:57,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:57,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637896074] [2022-11-16 12:24:57,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637896074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:57,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:57,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:24:57,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103690779] [2022-11-16 12:24:57,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:57,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:24:57,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:57,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:24:57,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:24:57,934 INFO L87 Difference]: Start difference. First operand 94884 states and 105722 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:04,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:04,484 INFO L93 Difference]: Finished difference Result 216612 states and 242478 transitions. [2022-11-16 12:25:04,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:25:04,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 447 [2022-11-16 12:25:04,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:04,605 INFO L225 Difference]: With dead ends: 216612 [2022-11-16 12:25:04,605 INFO L226 Difference]: Without dead ends: 122517 [2022-11-16 12:25:04,637 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 [2022-11-16 12:25:04,637 INFO L413 NwaCegarLoop]: 1753 mSDtfsCounter, 832 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 3124 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 3616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 3124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:04,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 1888 Invalid, 3616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 3124 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-16 12:25:04,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122517 states. [2022-11-16 12:25:06,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122517 to 120896. [2022-11-16 12:25:06,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120896 states, 120895 states have (on average 1.1087472600190247) internal successors, (134042), 120895 states have internal predecessors, (134042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:06,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120896 states to 120896 states and 134042 transitions. [2022-11-16 12:25:06,586 INFO L78 Accepts]: Start accepts. Automaton has 120896 states and 134042 transitions. Word has length 447 [2022-11-16 12:25:06,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:06,587 INFO L495 AbstractCegarLoop]: Abstraction has 120896 states and 134042 transitions. [2022-11-16 12:25:06,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:06,588 INFO L276 IsEmpty]: Start isEmpty. Operand 120896 states and 134042 transitions. [2022-11-16 12:25:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2022-11-16 12:25:06,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:06,598 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, 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, 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] [2022-11-16 12:25:06,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:25:06,598 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:25:06,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:06,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1736972796, now seen corresponding path program 1 times [2022-11-16 12:25:06,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:06,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734697701] [2022-11-16 12:25:06,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:06,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-16 12:25:06,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:06,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734697701] [2022-11-16 12:25:06,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734697701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:06,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:06,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:25:06,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918403735] [2022-11-16 12:25:06,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:06,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:25:06,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:06,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:25:06,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:25:06,961 INFO L87 Difference]: Start difference. First operand 120896 states and 134042 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:12,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:12,526 INFO L93 Difference]: Finished difference Result 240230 states and 266473 transitions. [2022-11-16 12:25:12,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:25:12,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 452 [2022-11-16 12:25:12,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:12,642 INFO L225 Difference]: With dead ends: 240230 [2022-11-16 12:25:12,642 INFO L226 Difference]: Without dead ends: 120123 [2022-11-16 12:25:12,673 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 [2022-11-16 12:25:12,673 INFO L413 NwaCegarLoop]: 1717 mSDtfsCounter, 793 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 3186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:12,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1868 Invalid, 3186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-16 12:25:12,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120123 states. [2022-11-16 12:25:14,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120123 to 118525. [2022-11-16 12:25:14,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118525 states, 118524 states have (on average 1.0782541932435625) internal successors, (127799), 118524 states have internal predecessors, (127799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:14,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118525 states to 118525 states and 127799 transitions. [2022-11-16 12:25:14,340 INFO L78 Accepts]: Start accepts. Automaton has 118525 states and 127799 transitions. Word has length 452 [2022-11-16 12:25:14,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:14,341 INFO L495 AbstractCegarLoop]: Abstraction has 118525 states and 127799 transitions. [2022-11-16 12:25:14,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:14,341 INFO L276 IsEmpty]: Start isEmpty. Operand 118525 states and 127799 transitions. [2022-11-16 12:25:14,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2022-11-16 12:25:14,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:14,348 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:14,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:25:14,348 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:25:14,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:14,349 INFO L85 PathProgramCache]: Analyzing trace with hash 778419174, now seen corresponding path program 1 times [2022-11-16 12:25:14,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:14,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639343209] [2022-11-16 12:25:14,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:14,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:15,439 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-16 12:25:15,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:15,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639343209] [2022-11-16 12:25:15,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639343209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:15,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:15,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:25:15,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096989705] [2022-11-16 12:25:15,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:15,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:25:15,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:15,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:25:15,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:25:15,442 INFO L87 Difference]: Start difference. First operand 118525 states and 127799 transitions. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:24,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:24,219 INFO L93 Difference]: Finished difference Result 297702 states and 324695 transitions. [2022-11-16 12:25:24,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:25:24,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 462 [2022-11-16 12:25:24,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:24,458 INFO L225 Difference]: With dead ends: 297702 [2022-11-16 12:25:24,458 INFO L226 Difference]: Without dead ends: 194928 [2022-11-16 12:25:24,506 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 [2022-11-16 12:25:24,506 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 1479 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 5283 mSolverCounterSat, 835 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 6118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 835 IncrementalHoareTripleChecker+Valid, 5283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:24,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 893 Invalid, 6118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [835 Valid, 5283 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-16 12:25:24,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194928 states. [2022-11-16 12:25:26,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194928 to 194903. [2022-11-16 12:25:26,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194903 states, 194902 states have (on average 1.07827523575951) internal successors, (210158), 194902 states have internal predecessors, (210158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:27,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194903 states to 194903 states and 210158 transitions. [2022-11-16 12:25:27,355 INFO L78 Accepts]: Start accepts. Automaton has 194903 states and 210158 transitions. Word has length 462 [2022-11-16 12:25:27,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:27,356 INFO L495 AbstractCegarLoop]: Abstraction has 194903 states and 210158 transitions. [2022-11-16 12:25:27,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:27,356 INFO L276 IsEmpty]: Start isEmpty. Operand 194903 states and 210158 transitions. [2022-11-16 12:25:27,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2022-11-16 12:25:27,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:27,383 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:27,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:25:27,384 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:25:27,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:27,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1386691199, now seen corresponding path program 1 times [2022-11-16 12:25:27,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:27,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091165476] [2022-11-16 12:25:27,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:27,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:29,154 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 352 proven. 110 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-16 12:25:29,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:29,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091165476] [2022-11-16 12:25:29,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091165476] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:25:29,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799726070] [2022-11-16 12:25:29,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:29,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:25:29,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:25:29,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:25:29,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:25:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:29,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:25:29,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 349 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-16 12:25:29,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:25:29,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799726070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:29,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:25:29,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-16 12:25:29,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536089873] [2022-11-16 12:25:29,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:29,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:25:29,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:29,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:25:29,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:25:29,523 INFO L87 Difference]: Start difference. First operand 194903 states and 210158 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:36,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:36,551 INFO L93 Difference]: Finished difference Result 405521 states and 437882 transitions. [2022-11-16 12:25:36,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:25:36,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 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 474 [2022-11-16 12:25:36,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:36,854 INFO L225 Difference]: With dead ends: 405521 [2022-11-16 12:25:36,854 INFO L226 Difference]: Without dead ends: 224005 [2022-11-16 12:25:36,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:25:36,931 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 940 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 2655 mSolverCounterSat, 759 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 3414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 759 IncrementalHoareTripleChecker+Valid, 2655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:36,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 1750 Invalid, 3414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [759 Valid, 2655 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-16 12:25:37,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224005 states. [2022-11-16 12:25:39,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224005 to 212980. [2022-11-16 12:25:39,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212980 states, 212979 states have (on average 1.0723733325820854) internal successors, (228393), 212979 states have internal predecessors, (228393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:39,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212980 states to 212980 states and 228393 transitions. [2022-11-16 12:25:39,580 INFO L78 Accepts]: Start accepts. Automaton has 212980 states and 228393 transitions. Word has length 474 [2022-11-16 12:25:39,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:39,580 INFO L495 AbstractCegarLoop]: Abstraction has 212980 states and 228393 transitions. [2022-11-16 12:25:39,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:39,581 INFO L276 IsEmpty]: Start isEmpty. Operand 212980 states and 228393 transitions. [2022-11-16 12:25:39,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2022-11-16 12:25:39,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:39,598 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:39,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:25:39,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:25:39,804 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:25:39,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:39,804 INFO L85 PathProgramCache]: Analyzing trace with hash 24078424, now seen corresponding path program 1 times [2022-11-16 12:25:39,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:39,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818159055] [2022-11-16 12:25:39,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:39,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 349 proven. 113 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-16 12:25:43,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:43,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818159055] [2022-11-16 12:25:43,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818159055] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:25:43,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427560794] [2022-11-16 12:25:43,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:43,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:25:43,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:25:43,030 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:25:43,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea35bc9d-b501-487a-a1ca-edca494f4c9f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:25:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:43,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:25:43,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-11-16 12:25:43,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:25:43,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427560794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:43,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:25:43,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-16 12:25:43,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956978229] [2022-11-16 12:25:43,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:43,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:25:43,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:43,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:25:43,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:25:43,297 INFO L87 Difference]: Start difference. First operand 212980 states and 228393 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:48,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:48,757 INFO L93 Difference]: Finished difference Result 408632 states and 438960 transitions. [2022-11-16 12:25:48,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:25:48,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 530 [2022-11-16 12:25:48,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:49,125 INFO L225 Difference]: With dead ends: 408632 [2022-11-16 12:25:49,125 INFO L226 Difference]: Without dead ends: 211402 [2022-11-16 12:25:49,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:25:49,239 INFO L413 NwaCegarLoop]: 1711 mSDtfsCounter, 915 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:49,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1838 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-16 12:25:49,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211402 states.