./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label09.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_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/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_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/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_29cc340c-ca97-4875-b093-3dca3b3c7ccd/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 1d5f7b2f1816dd8d73aabb707e1456dfc72cb3843c81f782dda241fa9bcec7fd --- 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 12:11:53,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:11:53,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:11:53,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:11:53,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:11:53,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:11:53,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:11:53,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:11:53,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:11:53,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:11:53,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:11:53,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:11:53,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:11:53,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:11:53,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:11:53,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:11:53,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:11:53,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:11:53,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:11:53,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:11:53,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:11:53,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:11:53,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:11:53,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:11:53,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:11:53,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:11:53,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:11:53,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:11:53,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:11:53,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:11:53,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:11:53,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:11:53,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:11:53,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:11:53,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:11:53,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:11:53,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:11:53,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:11:53,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:11:53,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:11:53,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:11:53,915 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:11:53,959 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:11:53,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:11:53,960 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:11:53,960 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:11:53,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:11:53,961 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:11:53,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:11:53,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:11:53,962 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:11:53,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:11:53,964 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:11:53,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:11:53,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:11:53,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:11:53,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:11:53,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:11:53,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:11:53,965 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:11:53,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:11:53,966 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:11:53,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:11:53,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:11:53,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:11:53,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:11:53,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:11:53,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:11:53,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:11:53,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:11:53,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:11:53,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:11:53,970 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:11:53,970 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:11:53,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:11:53,970 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_29cc340c-ca97-4875-b093-3dca3b3c7ccd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d5f7b2f1816dd8d73aabb707e1456dfc72cb3843c81f782dda241fa9bcec7fd [2022-11-16 12:11:54,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:11:54,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:11:54,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:11:54,342 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:11:54,343 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:11:54,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label09.c [2022-11-16 12:11:54,412 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/data/ad84f0fe0/291fc6f7d03d45c78c838e3d01804882/FLAGe82165bdc [2022-11-16 12:11:55,311 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:11:55,311 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label09.c [2022-11-16 12:11:55,357 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/data/ad84f0fe0/291fc6f7d03d45c78c838e3d01804882/FLAGe82165bdc [2022-11-16 12:11:55,763 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/data/ad84f0fe0/291fc6f7d03d45c78c838e3d01804882 [2022-11-16 12:11:55,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:11:55,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:11:55,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:11:55,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:11:55,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:11:55,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:11:55" (1/1) ... [2022-11-16 12:11:55,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bba1024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:55, skipping insertion in model container [2022-11-16 12:11:55,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:11:55" (1/1) ... [2022-11-16 12:11:55,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:11:55,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:11:56,296 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_29cc340c-ca97-4875-b093-3dca3b3c7ccd/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label09.c[6391,6404] [2022-11-16 12:11:56,403 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_29cc340c-ca97-4875-b093-3dca3b3c7ccd/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label09.c[14139,14152] [2022-11-16 12:11:57,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:11:57,405 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:11:57,450 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_29cc340c-ca97-4875-b093-3dca3b3c7ccd/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label09.c[6391,6404] [2022-11-16 12:11:57,466 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_29cc340c-ca97-4875-b093-3dca3b3c7ccd/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label09.c[14139,14152] [2022-11-16 12:11:58,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:11:58,064 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:11:58,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:58 WrapperNode [2022-11-16 12:11:58,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:11:58,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:11:58,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:11:58,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:11:58,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:58" (1/1) ... [2022-11-16 12:11:58,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:58" (1/1) ... [2022-11-16 12:11:58,515 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4965 [2022-11-16 12:11:58,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:11:58,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:11:58,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:11:58,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:11:58,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:58" (1/1) ... [2022-11-16 12:11:58,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:58" (1/1) ... [2022-11-16 12:11:58,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:58" (1/1) ... [2022-11-16 12:11:58,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:58" (1/1) ... [2022-11-16 12:11:58,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:58" (1/1) ... [2022-11-16 12:11:58,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:58" (1/1) ... [2022-11-16 12:11:58,960 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:58" (1/1) ... [2022-11-16 12:11:58,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:58" (1/1) ... [2022-11-16 12:11:59,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:11:59,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:11:59,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:11:59,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:11:59,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:58" (1/1) ... [2022-11-16 12:11:59,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:11:59,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:59,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:11:59,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:11:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:11:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:11:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:11:59,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:11:59,277 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:11:59,279 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:12:04,738 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:12:04,752 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:12:04,752 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:12:04,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:12:04 BoogieIcfgContainer [2022-11-16 12:12:04,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:12:04,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:12:04,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:12:04,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:12:04,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:11:55" (1/3) ... [2022-11-16 12:12:04,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e706fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:12:04, skipping insertion in model container [2022-11-16 12:12:04,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:58" (2/3) ... [2022-11-16 12:12:04,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e706fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:12:04, skipping insertion in model container [2022-11-16 12:12:04,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:12:04" (3/3) ... [2022-11-16 12:12:04,770 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label09.c [2022-11-16 12:12:04,789 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:12:04,789 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:12:04,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:12:04,897 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;@3ef391d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:12:04,897 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:12:04,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states 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 12:12:04,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 12:12:04,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:04,921 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] [2022-11-16 12:12:04,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:04,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1537187155, now seen corresponding path program 1 times [2022-11-16 12:12:04,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:04,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621577929] [2022-11-16 12:12:04,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:04,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:05,145 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 12:12:05,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:05,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621577929] [2022-11-16 12:12:05,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621577929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:05,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:05,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:12:05,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502846268] [2022-11-16 12:12:05,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:05,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:12:05,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:05,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:12:05,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:12:05,211 INFO L87 Difference]: Start difference. First operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 12:12:05,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:05,327 INFO L93 Difference]: Finished difference Result 1722 states and 3274 transitions. [2022-11-16 12:12:05,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:12:05,330 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-16 12:12:05,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:05,354 INFO L225 Difference]: With dead ends: 1722 [2022-11-16 12:12:05,354 INFO L226 Difference]: Without dead ends: 806 [2022-11-16 12:12:05,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:12:05,367 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:05,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:12:05,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2022-11-16 12:12:05,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2022-11-16 12:12:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.8955223880597014) internal successors, (1524), 805 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states 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 12:12:05,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1524 transitions. [2022-11-16 12:12:05,478 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1524 transitions. Word has length 20 [2022-11-16 12:12:05,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:05,479 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1524 transitions. [2022-11-16 12:12:05,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 12:12:05,479 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1524 transitions. [2022-11-16 12:12:05,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 12:12:05,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:05,481 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] [2022-11-16 12:12:05,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:12:05,482 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:05,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:05,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1746662891, now seen corresponding path program 1 times [2022-11-16 12:12:05,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:05,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160370789] [2022-11-16 12:12:05,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:05,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:05,728 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 12:12:05,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:05,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160370789] [2022-11-16 12:12:05,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160370789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:05,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:05,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:12:05,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365355801] [2022-11-16 12:12:05,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:05,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:12:05,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:05,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:12:05,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:12:05,735 INFO L87 Difference]: Start difference. First operand 806 states and 1524 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 12:12:05,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:05,959 INFO L93 Difference]: Finished difference Result 870 states and 1622 transitions. [2022-11-16 12:12:05,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:12:05,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-16 12:12:05,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:05,963 INFO L225 Difference]: With dead ends: 870 [2022-11-16 12:12:05,964 INFO L226 Difference]: Without dead ends: 836 [2022-11-16 12:12:05,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:12:05,969 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 49 mSDsluCounter, 4539 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 6059 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:05,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 6059 Invalid, 36 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:12:05,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-11-16 12:12:05,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 806. [2022-11-16 12:12:05,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.8756218905472637) internal successors, (1508), 805 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states 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 12:12:05,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1508 transitions. [2022-11-16 12:12:05,992 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1508 transitions. Word has length 20 [2022-11-16 12:12:05,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:05,993 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1508 transitions. [2022-11-16 12:12:05,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 12:12:05,993 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1508 transitions. [2022-11-16 12:12:05,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 12:12:05,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:06,000 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] [2022-11-16 12:12:06,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:12:06,000 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:06,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:06,011 INFO L85 PathProgramCache]: Analyzing trace with hash 623816355, now seen corresponding path program 1 times [2022-11-16 12:12:06,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:06,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43077093] [2022-11-16 12:12:06,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:06,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:06,163 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 12:12:06,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:06,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43077093] [2022-11-16 12:12:06,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43077093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:06,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:06,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:12:06,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452773614] [2022-11-16 12:12:06,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:06,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:12:06,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:06,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:12:06,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:12:06,168 INFO L87 Difference]: Start difference. First operand 806 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:12:06,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:06,344 INFO L93 Difference]: Finished difference Result 986 states and 1790 transitions. [2022-11-16 12:12:06,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:12:06,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-16 12:12:06,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:06,353 INFO L225 Difference]: With dead ends: 986 [2022-11-16 12:12:06,353 INFO L226 Difference]: Without dead ends: 956 [2022-11-16 12:12:06,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:12:06,361 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 4589 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4589 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:06,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4589 Valid, 1865 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:12:06,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-11-16 12:12:06,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 834. [2022-11-16 12:12:06,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8653846153846154) internal successors, (1552), 833 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states 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 12:12:06,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1552 transitions. [2022-11-16 12:12:06,391 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1552 transitions. Word has length 35 [2022-11-16 12:12:06,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:06,392 INFO L495 AbstractCegarLoop]: Abstraction has 834 states and 1552 transitions. [2022-11-16 12:12:06,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:12:06,393 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1552 transitions. [2022-11-16 12:12:06,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 12:12:06,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:06,399 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] [2022-11-16 12:12:06,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:12:06,400 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:06,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:06,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1071361683, now seen corresponding path program 1 times [2022-11-16 12:12:06,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:06,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928877801] [2022-11-16 12:12:06,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:06,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:06,542 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 12:12:06,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:06,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928877801] [2022-11-16 12:12:06,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928877801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:06,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:06,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:12:06,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47198772] [2022-11-16 12:12:06,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:06,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:12:06,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:06,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:12:06,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:12:06,546 INFO L87 Difference]: Start difference. First operand 834 states and 1552 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 12:12:06,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:06,622 INFO L93 Difference]: Finished difference Result 939 states and 1715 transitions. [2022-11-16 12:12:06,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:12:06,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-11-16 12:12:06,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:06,627 INFO L225 Difference]: With dead ends: 939 [2022-11-16 12:12:06,627 INFO L226 Difference]: Without dead ends: 881 [2022-11-16 12:12:06,628 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 12:12:06,638 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:06,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1548 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:12:06,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-11-16 12:12:06,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2022-11-16 12:12:06,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.847206385404789) internal successors, (1620), 878 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states 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 12:12:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1620 transitions. [2022-11-16 12:12:06,673 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1620 transitions. Word has length 37 [2022-11-16 12:12:06,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:06,674 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1620 transitions. [2022-11-16 12:12:06,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 12:12:06,675 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1620 transitions. [2022-11-16 12:12:06,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 12:12:06,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:06,681 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] [2022-11-16 12:12:06,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:12:06,682 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:06,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:06,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1137855195, now seen corresponding path program 1 times [2022-11-16 12:12:06,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:06,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071693313] [2022-11-16 12:12:06,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:06,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:06,979 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 12:12:06,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:06,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071693313] [2022-11-16 12:12:06,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071693313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:06,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:06,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:12:06,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823027957] [2022-11-16 12:12:06,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:06,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:12:06,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:06,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:12:06,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:12:06,982 INFO L87 Difference]: Start difference. First operand 879 states and 1620 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 12:12:07,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:07,085 INFO L93 Difference]: Finished difference Result 984 states and 1780 transitions. [2022-11-16 12:12:07,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:12:07,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-11-16 12:12:07,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:07,090 INFO L225 Difference]: With dead ends: 984 [2022-11-16 12:12:07,090 INFO L226 Difference]: Without dead ends: 881 [2022-11-16 12:12:07,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:12:07,092 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 2984 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2984 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:07,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2984 Valid, 1592 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:12:07,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-11-16 12:12:07,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2022-11-16 12:12:07,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.8449258836944127) internal successors, (1618), 878 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states 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 12:12:07,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1618 transitions. [2022-11-16 12:12:07,115 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1618 transitions. Word has length 37 [2022-11-16 12:12:07,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:07,115 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1618 transitions. [2022-11-16 12:12:07,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 12:12:07,116 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1618 transitions. [2022-11-16 12:12:07,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-16 12:12:07,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:07,119 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] [2022-11-16 12:12:07,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:12:07,119 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:07,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:07,126 INFO L85 PathProgramCache]: Analyzing trace with hash 499049456, now seen corresponding path program 1 times [2022-11-16 12:12:07,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:07,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188559276] [2022-11-16 12:12:07,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:07,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:07,307 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 12:12:07,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:07,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188559276] [2022-11-16 12:12:07,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188559276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:07,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:07,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:12:07,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083770632] [2022-11-16 12:12:07,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:07,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:12:07,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:07,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:12:07,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:12:07,309 INFO L87 Difference]: Start difference. First operand 879 states and 1618 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 12:12:07,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:07,446 INFO L93 Difference]: Finished difference Result 979 states and 1765 transitions. [2022-11-16 12:12:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:12:07,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-16 12:12:07,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:07,453 INFO L225 Difference]: With dead ends: 979 [2022-11-16 12:12:07,453 INFO L226 Difference]: Without dead ends: 977 [2022-11-16 12:12:07,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:12:07,455 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 112 mSDsluCounter, 4526 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 6072 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:07,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 6072 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:12:07,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-11-16 12:12:07,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 885. [2022-11-16 12:12:07,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.838052095130238) internal successors, (1623), 884 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states 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 12:12:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1623 transitions. [2022-11-16 12:12:07,503 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1623 transitions. Word has length 38 [2022-11-16 12:12:07,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:07,504 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1623 transitions. [2022-11-16 12:12:07,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 12:12:07,505 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1623 transitions. [2022-11-16 12:12:07,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-16 12:12:07,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:07,506 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] [2022-11-16 12:12:07,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:12:07,507 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:07,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:07,507 INFO L85 PathProgramCache]: Analyzing trace with hash 166228827, now seen corresponding path program 1 times [2022-11-16 12:12:07,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:07,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611363174] [2022-11-16 12:12:07,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:07,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:07,564 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 12:12:07,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:07,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611363174] [2022-11-16 12:12:07,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611363174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:07,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:07,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:12:07,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103264536] [2022-11-16 12:12:07,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:07,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:12:07,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:07,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:12:07,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:12:07,567 INFO L87 Difference]: Start difference. First operand 885 states and 1623 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 12:12:07,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:07,617 INFO L93 Difference]: Finished difference Result 1007 states and 1804 transitions. [2022-11-16 12:12:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:12:07,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-11-16 12:12:07,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:07,622 INFO L225 Difference]: With dead ends: 1007 [2022-11-16 12:12:07,622 INFO L226 Difference]: Without dead ends: 943 [2022-11-16 12:12:07,623 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 12:12:07,625 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 1476 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:07,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:12:07,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-11-16 12:12:07,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 941. [2022-11-16 12:12:07,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 939 states have (on average 1.8146964856230032) internal successors, (1704), 940 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states 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 12:12:07,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1704 transitions. [2022-11-16 12:12:07,663 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1704 transitions. Word has length 39 [2022-11-16 12:12:07,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:07,663 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1704 transitions. [2022-11-16 12:12:07,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 12:12:07,664 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1704 transitions. [2022-11-16 12:12:07,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-16 12:12:07,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:07,666 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] [2022-11-16 12:12:07,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:12:07,666 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:07,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:07,667 INFO L85 PathProgramCache]: Analyzing trace with hash -2049239973, now seen corresponding path program 1 times [2022-11-16 12:12:07,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:07,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278565371] [2022-11-16 12:12:07,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:07,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:07,728 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 12:12:07,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:07,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278565371] [2022-11-16 12:12:07,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278565371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:07,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:07,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:12:07,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609407871] [2022-11-16 12:12:07,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:07,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:12:07,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:07,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:12:07,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:12:07,732 INFO L87 Difference]: Start difference. First operand 941 states and 1704 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 12:12:07,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:07,786 INFO L93 Difference]: Finished difference Result 1243 states and 2144 transitions. [2022-11-16 12:12:07,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:12:07,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-11-16 12:12:07,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:07,792 INFO L225 Difference]: With dead ends: 1243 [2022-11-16 12:12:07,792 INFO L226 Difference]: Without dead ends: 1080 [2022-11-16 12:12:07,793 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 12:12:07,794 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:07,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:12:07,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2022-11-16 12:12:07,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1078. [2022-11-16 12:12:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1076 states have (on average 1.762081784386617) internal successors, (1896), 1077 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states 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 12:12:07,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1896 transitions. [2022-11-16 12:12:07,841 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1896 transitions. Word has length 39 [2022-11-16 12:12:07,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:07,841 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1896 transitions. [2022-11-16 12:12:07,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 12:12:07,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1896 transitions. [2022-11-16 12:12:07,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-16 12:12:07,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:07,844 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] [2022-11-16 12:12:07,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:12:07,844 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:07,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:07,845 INFO L85 PathProgramCache]: Analyzing trace with hash -268307109, now seen corresponding path program 1 times [2022-11-16 12:12:07,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:07,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481211282] [2022-11-16 12:12:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:07,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:07,943 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 12:12:07,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:07,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481211282] [2022-11-16 12:12:07,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481211282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:07,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:07,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:12:07,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506007185] [2022-11-16 12:12:07,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:07,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:12:07,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:07,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:12:07,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:12:07,946 INFO L87 Difference]: Start difference. First operand 1078 states and 1896 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 12:12:08,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:08,028 INFO L93 Difference]: Finished difference Result 1630 states and 2678 transitions. [2022-11-16 12:12:08,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:12:08,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-11-16 12:12:08,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:08,035 INFO L225 Difference]: With dead ends: 1630 [2022-11-16 12:12:08,035 INFO L226 Difference]: Without dead ends: 1330 [2022-11-16 12:12:08,036 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 12:12:08,038 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 1472 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:08,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1596 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:12:08,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2022-11-16 12:12:08,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1328. [2022-11-16 12:12:08,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1326 states have (on average 1.6832579185520362) internal successors, (2232), 1327 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states 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 12:12:08,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 2232 transitions. [2022-11-16 12:12:08,114 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 2232 transitions. Word has length 39 [2022-11-16 12:12:08,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:08,115 INFO L495 AbstractCegarLoop]: Abstraction has 1328 states and 2232 transitions. [2022-11-16 12:12:08,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 12:12:08,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 2232 transitions. [2022-11-16 12:12:08,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-16 12:12:08,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:08,116 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:12:08,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:12:08,117 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:08,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:08,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1567417933, now seen corresponding path program 1 times [2022-11-16 12:12:08,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:08,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196789509] [2022-11-16 12:12:08,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:08,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:08,226 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:12:08,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:08,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196789509] [2022-11-16 12:12:08,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196789509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:08,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:08,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:12:08,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492686910] [2022-11-16 12:12:08,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:08,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:12:08,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:08,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:12:08,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:12:08,229 INFO L87 Difference]: Start difference. First operand 1328 states and 2232 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:12:08,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:08,526 INFO L93 Difference]: Finished difference Result 2960 states and 4508 transitions. [2022-11-16 12:12:08,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:12:08,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-16 12:12:08,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:08,536 INFO L225 Difference]: With dead ends: 2960 [2022-11-16 12:12:08,536 INFO L226 Difference]: Without dead ends: 2558 [2022-11-16 12:12:08,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:12:08,538 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 3040 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3040 SdHoareTripleChecker+Valid, 3160 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:08,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3040 Valid, 3160 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:12:08,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2022-11-16 12:12:08,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1804. [2022-11-16 12:12:08,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1802 states have (on average 1.602663706992231) internal successors, (2888), 1803 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states 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 12:12:08,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 2888 transitions. [2022-11-16 12:12:08,672 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 2888 transitions. Word has length 54 [2022-11-16 12:12:08,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:08,673 INFO L495 AbstractCegarLoop]: Abstraction has 1804 states and 2888 transitions. [2022-11-16 12:12:08,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:12:08,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 2888 transitions. [2022-11-16 12:12:08,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-16 12:12:08,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:08,675 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:12:08,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:12:08,675 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:08,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:08,676 INFO L85 PathProgramCache]: Analyzing trace with hash -648050867, now seen corresponding path program 1 times [2022-11-16 12:12:08,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:08,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760223380] [2022-11-16 12:12:08,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:08,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:12:08,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:08,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760223380] [2022-11-16 12:12:08,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760223380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:08,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:08,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:12:08,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452086840] [2022-11-16 12:12:08,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:08,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:12:08,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:08,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:12:08,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:12:08,776 INFO L87 Difference]: Start difference. First operand 1804 states and 2888 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 12:12:09,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:09,188 INFO L93 Difference]: Finished difference Result 3508 states and 5268 transitions. [2022-11-16 12:12:09,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:12:09,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 54 [2022-11-16 12:12:09,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:09,199 INFO L225 Difference]: With dead ends: 3508 [2022-11-16 12:12:09,199 INFO L226 Difference]: Without dead ends: 2958 [2022-11-16 12:12:09,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:12:09,204 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 3040 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3040 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:09,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3040 Valid, 3157 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:12:09,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2022-11-16 12:12:09,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 2552. [2022-11-16 12:12:09,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2550 states have (on average 1.5356862745098039) internal successors, (3916), 2551 states have internal predecessors, (3916), 0 states have call successors, (0), 0 states 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 12:12:09,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 3916 transitions. [2022-11-16 12:12:09,435 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 3916 transitions. Word has length 54 [2022-11-16 12:12:09,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:09,435 INFO L495 AbstractCegarLoop]: Abstraction has 2552 states and 3916 transitions. [2022-11-16 12:12:09,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 12:12:09,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 3916 transitions. [2022-11-16 12:12:09,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-16 12:12:09,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:09,437 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:12:09,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:12:09,437 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:09,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:09,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1132881997, now seen corresponding path program 1 times [2022-11-16 12:12:09,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:09,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227511143] [2022-11-16 12:12:09,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:09,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:09,536 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:12:09,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:09,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227511143] [2022-11-16 12:12:09,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227511143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:09,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:09,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:12:09,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039319176] [2022-11-16 12:12:09,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:09,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:12:09,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:09,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:12:09,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:12:09,539 INFO L87 Difference]: Start difference. First operand 2552 states and 3916 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 12:12:09,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:09,889 INFO L93 Difference]: Finished difference Result 4056 states and 6024 transitions. [2022-11-16 12:12:09,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:12:09,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 54 [2022-11-16 12:12:09,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:09,903 INFO L225 Difference]: With dead ends: 4056 [2022-11-16 12:12:09,903 INFO L226 Difference]: Without dead ends: 3506 [2022-11-16 12:12:09,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:12:09,906 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 3048 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3048 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:09,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3048 Valid, 3153 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:12:09,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2022-11-16 12:12:10,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 3100. [2022-11-16 12:12:10,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3098 states have (on average 1.5080697224015494) internal successors, (4672), 3099 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states 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 12:12:10,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4672 transitions. [2022-11-16 12:12:10,241 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4672 transitions. Word has length 54 [2022-11-16 12:12:10,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:10,242 INFO L495 AbstractCegarLoop]: Abstraction has 3100 states and 4672 transitions. [2022-11-16 12:12:10,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 12:12:10,242 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4672 transitions. [2022-11-16 12:12:10,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-16 12:12:10,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:10,244 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:12:10,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:12:10,244 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:10,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:10,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1336470191, now seen corresponding path program 1 times [2022-11-16 12:12:10,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:10,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844878125] [2022-11-16 12:12:10,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:10,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:10,352 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:12:10,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:10,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844878125] [2022-11-16 12:12:10,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844878125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:10,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:10,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:12:10,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217507720] [2022-11-16 12:12:10,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:10,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:12:10,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:10,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:12:10,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:12:10,355 INFO L87 Difference]: Start difference. First operand 3100 states and 4672 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 12:12:10,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:10,652 INFO L93 Difference]: Finished difference Result 5424 states and 7882 transitions. [2022-11-16 12:12:10,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:12:10,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-11-16 12:12:10,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:10,666 INFO L225 Difference]: With dead ends: 5424 [2022-11-16 12:12:10,666 INFO L226 Difference]: Without dead ends: 3102 [2022-11-16 12:12:10,670 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 12:12:10,671 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:10,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:12:10,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2022-11-16 12:12:11,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 3100. [2022-11-16 12:12:11,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3098 states have (on average 1.4919302775984506) internal successors, (4622), 3099 states have internal predecessors, (4622), 0 states have call successors, (0), 0 states 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 12:12:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4622 transitions. [2022-11-16 12:12:11,085 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4622 transitions. Word has length 55 [2022-11-16 12:12:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:11,086 INFO L495 AbstractCegarLoop]: Abstraction has 3100 states and 4622 transitions. [2022-11-16 12:12:11,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 12:12:11,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4622 transitions. [2022-11-16 12:12:11,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 12:12:11,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:11,088 INFO L195 NwaCegarLoop]: trace histogram [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 12:12:11,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:12:11,088 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:11,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:11,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1355833083, now seen corresponding path program 1 times [2022-11-16 12:12:11,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:11,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810239008] [2022-11-16 12:12:11,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:11,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:12:11,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:11,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810239008] [2022-11-16 12:12:11,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810239008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:11,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:11,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:12:11,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127780825] [2022-11-16 12:12:11,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:11,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:12:11,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:11,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:12:11,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:12:11,215 INFO L87 Difference]: Start difference. First operand 3100 states and 4622 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 12:12:11,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:11,397 INFO L93 Difference]: Finished difference Result 4019 states and 5882 transitions. [2022-11-16 12:12:11,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:12:11,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-11-16 12:12:11,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:11,404 INFO L225 Difference]: With dead ends: 4019 [2022-11-16 12:12:11,405 INFO L226 Difference]: Without dead ends: 1697 [2022-11-16 12:12:11,408 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 12:12:11,408 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 23 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:11,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3019 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:12:11,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2022-11-16 12:12:11,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1689. [2022-11-16 12:12:11,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1687 states have (on average 1.5986959098992295) internal successors, (2697), 1688 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states 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 12:12:11,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2697 transitions. [2022-11-16 12:12:11,564 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2697 transitions. Word has length 56 [2022-11-16 12:12:11,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:11,564 INFO L495 AbstractCegarLoop]: Abstraction has 1689 states and 2697 transitions. [2022-11-16 12:12:11,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 12:12:11,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2697 transitions. [2022-11-16 12:12:11,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 12:12:11,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:11,566 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:12:11,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:12:11,566 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:11,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:11,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1597882527, now seen corresponding path program 1 times [2022-11-16 12:12:11,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:11,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285954471] [2022-11-16 12:12:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:11,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:12:11,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:11,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285954471] [2022-11-16 12:12:11,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285954471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:11,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:11,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:12:11,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715765927] [2022-11-16 12:12:11,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:11,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:12:11,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:11,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:12:11,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:12:11,659 INFO L87 Difference]: Start difference. First operand 1689 states and 2697 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 12:12:11,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:11,746 INFO L93 Difference]: Finished difference Result 2143 states and 3311 transitions. [2022-11-16 12:12:11,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:12:11,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-11-16 12:12:11,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:11,752 INFO L225 Difference]: With dead ends: 2143 [2022-11-16 12:12:11,758 INFO L226 Difference]: Without dead ends: 1241 [2022-11-16 12:12:11,760 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 12:12:11,763 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 25 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:11,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2998 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:12:11,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-11-16 12:12:11,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1239. [2022-11-16 12:12:11,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1237 states have (on average 1.6782538399353275) internal successors, (2076), 1238 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 12:12:11,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 2076 transitions. [2022-11-16 12:12:11,861 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 2076 transitions. Word has length 57 [2022-11-16 12:12:11,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:11,861 INFO L495 AbstractCegarLoop]: Abstraction has 1239 states and 2076 transitions. [2022-11-16 12:12:11,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 12:12:11,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 2076 transitions. [2022-11-16 12:12:11,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-16 12:12:11,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:11,865 INFO L195 NwaCegarLoop]: trace histogram [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 12:12:11,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:12:11,866 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:11,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:11,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1649038701, now seen corresponding path program 1 times [2022-11-16 12:12:11,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:11,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446464308] [2022-11-16 12:12:11,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:11,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:12,060 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:12:12,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:12,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446464308] [2022-11-16 12:12:12,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446464308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:12:12,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223185461] [2022-11-16 12:12:12,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:12,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:12,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:12,070 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:12,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:12:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:12,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:12:12,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:12:12,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:12:12,634 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:12:12,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223185461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:12:12,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:12:12,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2022-11-16 12:12:12,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81238673] [2022-11-16 12:12:12,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:12:12,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:12:12,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:12,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:12:12,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:12:12,637 INFO L87 Difference]: Start difference. First operand 1239 states and 2076 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 12:12:12,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:12,964 INFO L93 Difference]: Finished difference Result 2301 states and 3470 transitions. [2022-11-16 12:12:12,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:12:12,965 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-11-16 12:12:12,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:12,971 INFO L225 Difference]: With dead ends: 2301 [2022-11-16 12:12:12,971 INFO L226 Difference]: Without dead ends: 1849 [2022-11-16 12:12:12,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:12:12,973 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 3000 mSDsluCounter, 3193 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3000 SdHoareTripleChecker+Valid, 4697 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:12,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3000 Valid, 4697 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:12:12,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2022-11-16 12:12:13,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1794. [2022-11-16 12:12:13,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1792 states have (on average 1.5385044642857142) internal successors, (2757), 1793 states have internal predecessors, (2757), 0 states have call successors, (0), 0 states 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 12:12:13,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2757 transitions. [2022-11-16 12:12:13,131 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2757 transitions. Word has length 59 [2022-11-16 12:12:13,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:13,132 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2757 transitions. [2022-11-16 12:12:13,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 12:12:13,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2757 transitions. [2022-11-16 12:12:13,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 12:12:13,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:13,133 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:12:13,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:13,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:12:13,338 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:13,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:13,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1651307681, now seen corresponding path program 1 times [2022-11-16 12:12:13,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:13,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295293798] [2022-11-16 12:12:13,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:13,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:13,893 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:12:13,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:13,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295293798] [2022-11-16 12:12:13,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295293798] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:12:13,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040657254] [2022-11-16 12:12:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:13,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:13,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:13,896 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:13,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:12:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:14,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 12:12:14,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:14,763 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:12:14,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:12:16,374 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:12:16,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040657254] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:12:16,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:12:16,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2022-11-16 12:12:16,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248258463] [2022-11-16 12:12:16,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:12:16,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 12:12:16,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:16,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 12:12:16,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-11-16 12:12:16,378 INFO L87 Difference]: Start difference. First operand 1794 states and 2757 transitions. Second operand has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 27 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 12:12:18,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:18,441 INFO L93 Difference]: Finished difference Result 5375 states and 7173 transitions. [2022-11-16 12:12:18,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:12:18,441 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 27 states have internal predecessors, (150), 0 states have call successors, (0), 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 60 [2022-11-16 12:12:18,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:18,451 INFO L225 Difference]: With dead ends: 5375 [2022-11-16 12:12:18,451 INFO L226 Difference]: Without dead ends: 4448 [2022-11-16 12:12:18,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=407, Invalid=1485, Unknown=0, NotChecked=0, Total=1892 [2022-11-16 12:12:18,455 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 8027 mSDsluCounter, 10841 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8027 SdHoareTripleChecker+Valid, 12343 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:18,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8027 Valid, 12343 Invalid, 576 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:12:18,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4448 states. [2022-11-16 12:12:18,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4448 to 2677. [2022-11-16 12:12:18,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 2675 states have (on average 1.4418691588785046) internal successors, (3857), 2676 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states 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 12:12:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 3857 transitions. [2022-11-16 12:12:18,847 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 3857 transitions. Word has length 60 [2022-11-16 12:12:18,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:18,847 INFO L495 AbstractCegarLoop]: Abstraction has 2677 states and 3857 transitions. [2022-11-16 12:12:18,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 27 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 12:12:18,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 3857 transitions. [2022-11-16 12:12:18,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 12:12:18,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:18,849 INFO L195 NwaCegarLoop]: trace histogram [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 12:12:18,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:19,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:12:19,055 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:19,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:19,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1417299731, now seen corresponding path program 1 times [2022-11-16 12:12:19,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:19,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552239787] [2022-11-16 12:12:19,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:19,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:19,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:12:19,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:19,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552239787] [2022-11-16 12:12:19,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552239787] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:12:19,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309687333] [2022-11-16 12:12:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:19,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:19,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:19,442 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:19,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:12:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:19,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-16 12:12:19,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:12:24,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:12:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:12:27,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309687333] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:12:27,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:12:27,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 21] total 46 [2022-11-16 12:12:27,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692851394] [2022-11-16 12:12:27,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:12:27,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-16 12:12:27,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:27,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-16 12:12:27,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=1712, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 12:12:27,922 INFO L87 Difference]: Start difference. First operand 2677 states and 3857 transitions. Second operand has 46 states, 46 states have (on average 3.4782608695652173) internal successors, (160), 46 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 12:13:02,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:02,572 INFO L93 Difference]: Finished difference Result 19969 states and 24974 transitions. [2022-11-16 12:13:02,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-11-16 12:13:02,572 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.4782608695652173) internal successors, (160), 46 states have internal predecessors, (160), 0 states have call successors, (0), 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 60 [2022-11-16 12:13:02,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:02,616 INFO L225 Difference]: With dead ends: 19969 [2022-11-16 12:13:02,617 INFO L226 Difference]: Without dead ends: 18327 [2022-11-16 12:13:02,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13717 ImplicationChecksByTransitivity, 30.9s TimeCoverageRelationStatistics Valid=7097, Invalid=26943, Unknown=0, NotChecked=0, Total=34040 [2022-11-16 12:13:02,633 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 15170 mSDsluCounter, 18195 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15170 SdHoareTripleChecker+Valid, 19741 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:02,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15170 Valid, 19741 Invalid, 2090 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [149 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 12:13:02,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18327 states. [2022-11-16 12:13:03,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18327 to 5290. [2022-11-16 12:13:03,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 5288 states have (on average 1.3521180030257187) internal successors, (7150), 5289 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states 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 12:13:03,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 7150 transitions. [2022-11-16 12:13:03,692 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 7150 transitions. Word has length 60 [2022-11-16 12:13:03,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:03,692 INFO L495 AbstractCegarLoop]: Abstraction has 5290 states and 7150 transitions. [2022-11-16 12:13:03,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.4782608695652173) internal successors, (160), 46 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 12:13:03,693 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 7150 transitions. [2022-11-16 12:13:03,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 12:13:03,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:03,694 INFO L195 NwaCegarLoop]: trace histogram [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 12:13:03,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:03,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:13:03,901 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:03,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:03,901 INFO L85 PathProgramCache]: Analyzing trace with hash 858338323, now seen corresponding path program 1 times [2022-11-16 12:13:03,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:03,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130679320] [2022-11-16 12:13:03,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:03,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:04,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:04,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130679320] [2022-11-16 12:13:04,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130679320] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:04,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144893676] [2022-11-16 12:13:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:04,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:04,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:04,335 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:04,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:13:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:04,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 12:13:04,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:05,386 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:05,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:06,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144893676] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:13:06,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:13:06,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2022-11-16 12:13:06,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717137464] [2022-11-16 12:13:06,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:06,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:13:06,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:06,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:13:06,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:13:06,428 INFO L87 Difference]: Start difference. First operand 5290 states and 7150 transitions. Second operand has 28 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 12:13:09,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:09,332 INFO L93 Difference]: Finished difference Result 12256 states and 15742 transitions. [2022-11-16 12:13:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 12:13:09,332 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 0 states have call successors, (0), 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 60 [2022-11-16 12:13:09,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:09,349 INFO L225 Difference]: With dead ends: 12256 [2022-11-16 12:13:09,349 INFO L226 Difference]: Without dead ends: 8434 [2022-11-16 12:13:09,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=514, Invalid=1648, Unknown=0, NotChecked=0, Total=2162 [2022-11-16 12:13:09,355 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 13871 mSDsluCounter, 6205 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13871 SdHoareTripleChecker+Valid, 7718 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:09,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13871 Valid, 7718 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:13:09,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8434 states. [2022-11-16 12:13:10,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8434 to 6670. [2022-11-16 12:13:10,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6670 states, 6668 states have (on average 1.3113377324535094) internal successors, (8744), 6669 states have internal predecessors, (8744), 0 states have call successors, (0), 0 states 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 12:13:10,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6670 states to 6670 states and 8744 transitions. [2022-11-16 12:13:10,990 INFO L78 Accepts]: Start accepts. Automaton has 6670 states and 8744 transitions. Word has length 60 [2022-11-16 12:13:10,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:10,990 INFO L495 AbstractCegarLoop]: Abstraction has 6670 states and 8744 transitions. [2022-11-16 12:13:10,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 12:13:10,991 INFO L276 IsEmpty]: Start isEmpty. Operand 6670 states and 8744 transitions. [2022-11-16 12:13:10,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 12:13:10,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:10,992 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:13:10,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:11,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:11,198 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:11,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:11,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1819175731, now seen corresponding path program 1 times [2022-11-16 12:13:11,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:11,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39937702] [2022-11-16 12:13:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:11,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:12,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:12,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39937702] [2022-11-16 12:13:12,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39937702] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:12,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672361544] [2022-11-16 12:13:12,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:12,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:12,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:12,291 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:12,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:13:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:12,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:13:12,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:13,587 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:13,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:15,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672361544] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:13:15,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:13:15,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 16] total 37 [2022-11-16 12:13:15,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073822100] [2022-11-16 12:13:15,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:15,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-16 12:13:15,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:15,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-16 12:13:15,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1163, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 12:13:15,667 INFO L87 Difference]: Start difference. First operand 6670 states and 8744 transitions. Second operand has 37 states, 37 states have (on average 4.081081081081081) internal successors, (151), 37 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 12:13:22,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:22,879 INFO L93 Difference]: Finished difference Result 14969 states and 19050 transitions. [2022-11-16 12:13:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 12:13:22,880 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.081081081081081) internal successors, (151), 37 states have internal predecessors, (151), 0 states have call successors, (0), 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 61 [2022-11-16 12:13:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:22,901 INFO L225 Difference]: With dead ends: 14969 [2022-11-16 12:13:22,902 INFO L226 Difference]: Without dead ends: 12281 [2022-11-16 12:13:22,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1064, Invalid=3906, Unknown=0, NotChecked=0, Total=4970 [2022-11-16 12:13:22,908 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 13853 mSDsluCounter, 14131 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13853 SdHoareTripleChecker+Valid, 15674 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:22,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13853 Valid, 15674 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:13:22,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12281 states. [2022-11-16 12:13:24,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12281 to 5830. [2022-11-16 12:13:24,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5830 states, 5828 states have (on average 1.320178448867536) internal successors, (7694), 5829 states have internal predecessors, (7694), 0 states have call successors, (0), 0 states 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 12:13:24,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5830 states to 5830 states and 7694 transitions. [2022-11-16 12:13:24,383 INFO L78 Accepts]: Start accepts. Automaton has 5830 states and 7694 transitions. Word has length 61 [2022-11-16 12:13:24,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:24,384 INFO L495 AbstractCegarLoop]: Abstraction has 5830 states and 7694 transitions. [2022-11-16 12:13:24,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.081081081081081) internal successors, (151), 37 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 12:13:24,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5830 states and 7694 transitions. [2022-11-16 12:13:24,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 12:13:24,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:24,390 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:13:24,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:24,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:24,596 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:24,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:24,596 INFO L85 PathProgramCache]: Analyzing trace with hash 705601745, now seen corresponding path program 1 times [2022-11-16 12:13:24,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:24,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282751298] [2022-11-16 12:13:24,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:24,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:25,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:25,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282751298] [2022-11-16 12:13:25,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282751298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:25,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980066129] [2022-11-16 12:13:25,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:25,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:25,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:25,912 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:25,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:13:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:26,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-16 12:13:26,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:28,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:33,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980066129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:13:33,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:13:33,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 18] total 49 [2022-11-16 12:13:33,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467303321] [2022-11-16 12:13:33,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:33,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-16 12:13:33,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:33,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-16 12:13:33,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2153, Unknown=0, NotChecked=0, Total=2352 [2022-11-16 12:13:33,698 INFO L87 Difference]: Start difference. First operand 5830 states and 7694 transitions. Second operand has 49 states, 49 states have (on average 3.2857142857142856) internal successors, (161), 49 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 12:15:00,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:00,399 INFO L93 Difference]: Finished difference Result 17753 states and 22247 transitions. [2022-11-16 12:15:00,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2022-11-16 12:15:00,400 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.2857142857142856) internal successors, (161), 49 states have internal predecessors, (161), 0 states have call successors, (0), 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 62 [2022-11-16 12:15:00,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:00,420 INFO L225 Difference]: With dead ends: 17753 [2022-11-16 12:15:00,420 INFO L226 Difference]: Without dead ends: 14301 [2022-11-16 12:15:00,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 91 SyntacticMatches, 4 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23242 ImplicationChecksByTransitivity, 80.2s TimeCoverageRelationStatistics Valid=11285, Invalid=49971, Unknown=0, NotChecked=0, Total=61256 [2022-11-16 12:15:00,437 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 26698 mSDsluCounter, 22253 mSDsCounter, 0 mSdLazyCounter, 3936 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26698 SdHoareTripleChecker+Valid, 23812 SdHoareTripleChecker+Invalid, 4124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 3936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:00,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26698 Valid, 23812 Invalid, 4124 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [188 Valid, 3936 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-16 12:15:00,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14301 states. [2022-11-16 12:15:02,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14301 to 5074. [2022-11-16 12:15:02,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5074 states, 5072 states have (on average 1.337539432176656) internal successors, (6784), 5073 states have internal predecessors, (6784), 0 states have call successors, (0), 0 states 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 12:15:02,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5074 states to 5074 states and 6784 transitions. [2022-11-16 12:15:02,285 INFO L78 Accepts]: Start accepts. Automaton has 5074 states and 6784 transitions. Word has length 62 [2022-11-16 12:15:02,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:02,285 INFO L495 AbstractCegarLoop]: Abstraction has 5074 states and 6784 transitions. [2022-11-16 12:15:02,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.2857142857142856) internal successors, (161), 49 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 12:15:02,286 INFO L276 IsEmpty]: Start isEmpty. Operand 5074 states and 6784 transitions. [2022-11-16 12:15:02,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 12:15:02,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:02,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:02,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:02,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:02,493 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:02,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:02,494 INFO L85 PathProgramCache]: Analyzing trace with hash 572872140, now seen corresponding path program 1 times [2022-11-16 12:15:02,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:02,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721630646] [2022-11-16 12:15:02,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:02,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:02,667 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 12:15:02,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:02,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721630646] [2022-11-16 12:15:02,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721630646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:02,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:02,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:15:02,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648635338] [2022-11-16 12:15:02,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:02,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:15:02,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:02,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:15:02,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:15:02,671 INFO L87 Difference]: Start difference. First operand 5074 states and 6784 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 12:15:12,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:12,664 INFO L93 Difference]: Finished difference Result 7329 states and 11093 transitions. [2022-11-16 12:15:12,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:15:12,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-11-16 12:15:12,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:12,672 INFO L225 Difference]: With dead ends: 7329 [2022-11-16 12:15:12,672 INFO L226 Difference]: Without dead ends: 6576 [2022-11-16 12:15:12,675 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 12:15:12,675 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 2317 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:12,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2317 Valid, 762 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-16 12:15:12,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6576 states. [2022-11-16 12:15:14,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6576 to 6576. [2022-11-16 12:15:14,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6576 states, 6574 states have (on average 1.353513842409492) internal successors, (8898), 6575 states have internal predecessors, (8898), 0 states have call successors, (0), 0 states 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 12:15:14,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6576 states to 6576 states and 8898 transitions. [2022-11-16 12:15:14,732 INFO L78 Accepts]: Start accepts. Automaton has 6576 states and 8898 transitions. Word has length 67 [2022-11-16 12:15:14,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:14,732 INFO L495 AbstractCegarLoop]: Abstraction has 6576 states and 8898 transitions. [2022-11-16 12:15:14,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 12:15:14,732 INFO L276 IsEmpty]: Start isEmpty. Operand 6576 states and 8898 transitions. [2022-11-16 12:15:14,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-16 12:15:14,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:14,734 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 12:15:14,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:15:14,734 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:14,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:14,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1644665067, now seen corresponding path program 1 times [2022-11-16 12:15:14,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:14,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462087289] [2022-11-16 12:15:14,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:14,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:15,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:15,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462087289] [2022-11-16 12:15:15,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462087289] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:15:15,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713078168] [2022-11-16 12:15:15,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:15,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:15,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:15,943 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:15,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:15:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:16,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:15:16,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 44 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:17,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:23,517 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 37 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:23,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713078168] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:15:23,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:15:23,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 15] total 41 [2022-11-16 12:15:23,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568095722] [2022-11-16 12:15:23,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:23,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-16 12:15:23,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:23,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-16 12:15:23,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1495, Unknown=0, NotChecked=0, Total=1640 [2022-11-16 12:15:23,521 INFO L87 Difference]: Start difference. First operand 6576 states and 8898 transitions. Second operand has 41 states, 41 states have (on average 6.7317073170731705) internal successors, (276), 41 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 12:16:47,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:47,931 INFO L93 Difference]: Finished difference Result 36747 states and 45735 transitions. [2022-11-16 12:16:47,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2022-11-16 12:16:47,931 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.7317073170731705) internal successors, (276), 41 states have internal predecessors, (276), 0 states have call successors, (0), 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 100 [2022-11-16 12:16:47,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:47,972 INFO L225 Difference]: With dead ends: 36747 [2022-11-16 12:16:47,972 INFO L226 Difference]: Without dead ends: 32781 [2022-11-16 12:16:47,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 163 SyntacticMatches, 13 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18894 ImplicationChecksByTransitivity, 62.6s TimeCoverageRelationStatistics Valid=7300, Invalid=43550, Unknown=0, NotChecked=0, Total=50850 [2022-11-16 12:16:47,989 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 28941 mSDsluCounter, 20820 mSDsCounter, 0 mSdLazyCounter, 2941 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28941 SdHoareTripleChecker+Valid, 22539 SdHoareTripleChecker+Invalid, 3169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 2941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:47,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28941 Valid, 22539 Invalid, 3169 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [228 Valid, 2941 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-16 12:16:48,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32781 states. [2022-11-16 12:16:53,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32781 to 10703. [2022-11-16 12:16:53,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10703 states, 10701 states have (on average 1.300158863657602) internal successors, (13913), 10702 states have internal predecessors, (13913), 0 states have call successors, (0), 0 states 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 12:16:53,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10703 states to 10703 states and 13913 transitions. [2022-11-16 12:16:53,905 INFO L78 Accepts]: Start accepts. Automaton has 10703 states and 13913 transitions. Word has length 100 [2022-11-16 12:16:53,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:53,906 INFO L495 AbstractCegarLoop]: Abstraction has 10703 states and 13913 transitions. [2022-11-16 12:16:53,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.7317073170731705) internal successors, (276), 41 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 12:16:53,906 INFO L276 IsEmpty]: Start isEmpty. Operand 10703 states and 13913 transitions. [2022-11-16 12:16:53,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-16 12:16:53,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:53,910 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 12:16:53,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 12:16:54,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-16 12:16:54,115 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:54,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:54,116 INFO L85 PathProgramCache]: Analyzing trace with hash 804061493, now seen corresponding path program 1 times [2022-11-16 12:16:54,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:54,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102573779] [2022-11-16 12:16:54,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:54,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 35 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:55,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:55,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102573779] [2022-11-16 12:16:55,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102573779] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:55,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056025244] [2022-11-16 12:16:55,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:55,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:55,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:55,338 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:55,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:16:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:55,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:16:55,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:57,034 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 20 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:57,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:17:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 17 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:00,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056025244] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:17:00,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:17:00,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 43 [2022-11-16 12:17:00,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496817506] [2022-11-16 12:17:00,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:17:00,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-16 12:17:00,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:00,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-16 12:17:00,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1657, Unknown=0, NotChecked=0, Total=1806 [2022-11-16 12:17:00,172 INFO L87 Difference]: Start difference. First operand 10703 states and 13913 transitions. Second operand has 43 states, 43 states have (on average 6.395348837209302) internal successors, (275), 43 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 12:18:13,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:13,939 INFO L93 Difference]: Finished difference Result 41160 states and 50970 transitions. [2022-11-16 12:18:13,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-11-16 12:18:13,940 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.395348837209302) internal successors, (275), 43 states have internal predecessors, (275), 0 states have call successors, (0), 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 100 [2022-11-16 12:18:13,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:13,979 INFO L225 Difference]: With dead ends: 41160 [2022-11-16 12:18:13,979 INFO L226 Difference]: Without dead ends: 34094 [2022-11-16 12:18:13,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17695 ImplicationChecksByTransitivity, 40.8s TimeCoverageRelationStatistics Valid=6478, Invalid=40828, Unknown=0, NotChecked=0, Total=47306 [2022-11-16 12:18:13,992 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 26547 mSDsluCounter, 26234 mSDsCounter, 0 mSdLazyCounter, 3740 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26547 SdHoareTripleChecker+Valid, 27850 SdHoareTripleChecker+Invalid, 3879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 3740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:18:13,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26547 Valid, 27850 Invalid, 3879 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [139 Valid, 3740 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-16 12:18:14,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34094 states. [2022-11-16 12:18:24,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34094 to 15936. [2022-11-16 12:18:24,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15936 states, 15934 states have (on average 1.2820384084347936) internal successors, (20428), 15935 states have internal predecessors, (20428), 0 states have call successors, (0), 0 states 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 12:18:24,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15936 states to 15936 states and 20428 transitions. [2022-11-16 12:18:24,512 INFO L78 Accepts]: Start accepts. Automaton has 15936 states and 20428 transitions. Word has length 100 [2022-11-16 12:18:24,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:24,513 INFO L495 AbstractCegarLoop]: Abstraction has 15936 states and 20428 transitions. [2022-11-16 12:18:24,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.395348837209302) internal successors, (275), 43 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 12:18:24,513 INFO L276 IsEmpty]: Start isEmpty. Operand 15936 states and 20428 transitions. [2022-11-16 12:18:24,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-16 12:18:24,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:24,515 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 12:18:24,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:18:24,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 12:18:24,719 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:18:24,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:24,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1088955627, now seen corresponding path program 1 times [2022-11-16 12:18:24,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:24,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580183549] [2022-11-16 12:18:24,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:24,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 25 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:25,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:25,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580183549] [2022-11-16 12:18:25,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580183549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:18:25,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862483085] [2022-11-16 12:18:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:25,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:18:25,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:18:25,981 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:18:26,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:18:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:26,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-16 12:18:26,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:18:28,986 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:28,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:18:34,903 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:34,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862483085] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:18:34,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:18:34,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 18] total 49 [2022-11-16 12:18:34,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300279150] [2022-11-16 12:18:34,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:18:34,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-16 12:18:34,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:34,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-16 12:18:34,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2134, Unknown=0, NotChecked=0, Total=2352 [2022-11-16 12:18:34,906 INFO L87 Difference]: Start difference. First operand 15936 states and 20428 transitions. Second operand has 49 states, 49 states have (on average 5.816326530612245) internal successors, (285), 49 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 12:21:44,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:21:44,279 INFO L93 Difference]: Finished difference Result 66155 states and 81285 transitions. [2022-11-16 12:21:44,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 379 states. [2022-11-16 12:21:44,279 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.816326530612245) internal successors, (285), 49 states have internal predecessors, (285), 0 states have call successors, (0), 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 100 [2022-11-16 12:21:44,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:21:44,355 INFO L225 Difference]: With dead ends: 66155 [2022-11-16 12:21:44,355 INFO L226 Difference]: Without dead ends: 53058 [2022-11-16 12:21:44,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 424 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78089 ImplicationChecksByTransitivity, 130.6s TimeCoverageRelationStatistics Valid=18960, Invalid=162090, Unknown=0, NotChecked=0, Total=181050 [2022-11-16 12:21:44,377 INFO L413 NwaCegarLoop]: 1697 mSDtfsCounter, 38995 mSDsluCounter, 20573 mSDsCounter, 0 mSdLazyCounter, 3620 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38995 SdHoareTripleChecker+Valid, 22270 SdHoareTripleChecker+Invalid, 4019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 3620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:21:44,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38995 Valid, 22270 Invalid, 4019 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [399 Valid, 3620 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-16 12:21:44,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53058 states. [2022-11-16 12:21:54,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53058 to 12714. [2022-11-16 12:21:54,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12714 states, 12712 states have (on average 1.2910635619886721) internal successors, (16412), 12713 states have internal predecessors, (16412), 0 states have call successors, (0), 0 states 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 12:21:54,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12714 states to 12714 states and 16412 transitions. [2022-11-16 12:21:54,249 INFO L78 Accepts]: Start accepts. Automaton has 12714 states and 16412 transitions. Word has length 100 [2022-11-16 12:21:54,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:21:54,250 INFO L495 AbstractCegarLoop]: Abstraction has 12714 states and 16412 transitions. [2022-11-16 12:21:54,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.816326530612245) internal successors, (285), 49 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 12:21:54,250 INFO L276 IsEmpty]: Start isEmpty. Operand 12714 states and 16412 transitions. [2022-11-16 12:21:54,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:21:54,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:21:54,253 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 12:21:54,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:21:54,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 12:21:54,467 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:21:54,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:21:54,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1392468563, now seen corresponding path program 1 times [2022-11-16 12:21:54,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:21:54,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164331421] [2022-11-16 12:21:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:54,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:21:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:56,065 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:21:56,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:21:56,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164331421] [2022-11-16 12:21:56,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164331421] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:21:56,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919813055] [2022-11-16 12:21:56,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:56,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:21:56,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:21:56,068 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:21:56,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cc340c-ca97-4875-b093-3dca3b3c7ccd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:21:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:56,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 12:21:56,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:21:59,037 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 26 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:21:59,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:22:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 26 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:19,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919813055] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:22:19,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:22:19,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 19] total 58 [2022-11-16 12:22:19,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52299514] [2022-11-16 12:22:19,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:22:19,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-16 12:22:19,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:19,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-16 12:22:19,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=3049, Unknown=0, NotChecked=0, Total=3306 [2022-11-16 12:22:19,910 INFO L87 Difference]: Start difference. First operand 12714 states and 16412 transitions. Second operand has 58 states, 58 states have (on average 4.879310344827586) internal successors, (283), 58 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)