./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label47+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c5c8c8-a4df-456d-976d-20fd88b58071/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c5c8c8-a4df-456d-976d-20fd88b58071/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c5c8c8-a4df-456d-976d-20fd88b58071/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c5c8c8-a4df-456d-976d-20fd88b58071/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label47+token_ring.07.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c5c8c8-a4df-456d-976d-20fd88b58071/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c5c8c8-a4df-456d-976d-20fd88b58071/bin/uautomizer-TMbwUNV5ro --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 099a6a574a6046de5acacffb386ced7bed15faed2715ea5faa9de06eb0c5ca5a --- 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-8393723 [2022-11-18 21:07:50,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:07:50,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:07:50,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:07:50,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:07:50,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:07:50,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:07:50,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:07:50,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:07:50,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:07:50,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:07:50,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:07:50,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:07:50,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:07:50,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:07:50,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:07:50,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:07:50,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:07:50,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:07:50,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:07:50,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:07:50,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:07:50,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:07:50,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:07:50,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:07:50,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:07:50,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:07:50,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:07:50,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:07:50,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:07:50,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:07:50,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:07:50,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:07:50,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:07:50,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:07:50,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:07:50,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:07:50,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:07:50,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:07:50,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:07:50,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:07:50,917 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c5c8c8-a4df-456d-976d-20fd88b58071/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 21:07:50,955 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:07:50,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:07:50,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:07:50,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:07:50,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:07:50,960 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:07:50,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:07:50,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:07:50,962 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:07:50,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:07:50,963 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:07:50,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:07:50,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:07:50,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:07:50,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:07:50,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:07:50,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:07:50,965 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:07:50,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:07:50,965 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:07:50,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:07:50,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:07:50,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:07:50,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:07:50,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:07:50,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:07:50,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:07:50,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:07:50,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:07:50,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:07:50,968 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:07:50,969 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:07:50,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:07:50,969 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_61c5c8c8-a4df-456d-976d-20fd88b58071/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c5c8c8-a4df-456d-976d-20fd88b58071/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 099a6a574a6046de5acacffb386ced7bed15faed2715ea5faa9de06eb0c5ca5a [2022-11-18 21:07:51,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:07:51,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:07:51,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:07:51,325 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:07:51,328 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:07:51,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c5c8c8-a4df-456d-976d-20fd88b58071/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/Problem05_label47+token_ring.07.cil-1.c [2022-11-18 21:07:51,422 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c5c8c8-a4df-456d-976d-20fd88b58071/bin/uautomizer-TMbwUNV5ro/data/0d54cb889/38c82127d40a4c1ab3406e1c277e09c5/FLAG366827575 [2022-11-18 21:07:52,547 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:07:52,548 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c5c8c8-a4df-456d-976d-20fd88b58071/sv-benchmarks/c/combinations/Problem05_label47+token_ring.07.cil-1.c [2022-11-18 21:07:52,623 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c5c8c8-a4df-456d-976d-20fd88b58071/bin/uautomizer-TMbwUNV5ro/data/0d54cb889/38c82127d40a4c1ab3406e1c277e09c5/FLAG366827575 [2022-11-18 21:07:52,810 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c5c8c8-a4df-456d-976d-20fd88b58071/bin/uautomizer-TMbwUNV5ro/data/0d54cb889/38c82127d40a4c1ab3406e1c277e09c5 [2022-11-18 21:07:52,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:07:52,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:07:52,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:07:52,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:07:52,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:07:52,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:07:52" (1/1) ... [2022-11-18 21:07:52,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ddb4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:52, skipping insertion in model container [2022-11-18 21:07:52,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:07:52" (1/1) ... [2022-11-18 21:07:52,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:07:53,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:07:55,981 WARN L234 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_61c5c8c8-a4df-456d-976d-20fd88b58071/sv-benchmarks/c/combinations/Problem05_label47+token_ring.07.cil-1.c[377612,377625] [2022-11-18 21:07:56,016 WARN L234 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_61c5c8c8-a4df-456d-976d-20fd88b58071/sv-benchmarks/c/combinations/Problem05_label47+token_ring.07.cil-1.c[383339,383352] [2022-11-18 21:07:56,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:07:56,326 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:07:57,918 WARN L234 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_61c5c8c8-a4df-456d-976d-20fd88b58071/sv-benchmarks/c/combinations/Problem05_label47+token_ring.07.cil-1.c[377612,377625] [2022-11-18 21:07:57,930 WARN L234 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_61c5c8c8-a4df-456d-976d-20fd88b58071/sv-benchmarks/c/combinations/Problem05_label47+token_ring.07.cil-1.c[383339,383352] [2022-11-18 21:07:57,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:07:58,047 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:07:58,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:58 WrapperNode [2022-11-18 21:07:58,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:07:58,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:07:58,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:07:58,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:07:58,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:58" (1/1) ... [2022-11-18 21:07:58,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:58" (1/1) ... [2022-11-18 21:07:58,766 INFO L138 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12909 [2022-11-18 21:07:58,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:07:58,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:07:58,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:07:58,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:07:58,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:58" (1/1) ... [2022-11-18 21:07:58,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:58" (1/1) ... [2022-11-18 21:07:58,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:58" (1/1) ... [2022-11-18 21:07:58,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:58" (1/1) ... [2022-11-18 21:07:59,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:58" (1/1) ... [2022-11-18 21:07:59,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:58" (1/1) ... [2022-11-18 21:07:59,441 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:58" (1/1) ... [2022-11-18 21:07:59,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:58" (1/1) ... [2022-11-18 21:07:59,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:07:59,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:07:59,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:07:59,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:07:59,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:58" (1/1) ... [2022-11-18 21:07:59,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:07:59,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c5c8c8-a4df-456d-976d-20fd88b58071/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:59,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c5c8c8-a4df-456d-976d-20fd88b58071/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:07:59,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c5c8c8-a4df-456d-976d-20fd88b58071/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:07:59,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:07:59,904 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-18 21:07:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-18 21:07:59,905 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-18 21:07:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-18 21:07:59,905 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-18 21:07:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-18 21:07:59,906 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-18 21:07:59,906 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-18 21:07:59,906 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-18 21:07:59,906 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-18 21:07:59,906 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-18 21:07:59,907 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-18 21:07:59,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:07:59,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:07:59,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:08:00,124 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:08:00,126 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:08:11,300 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:08:11,341 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:08:11,341 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-18 21:08:11,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:08:11 BoogieIcfgContainer [2022-11-18 21:08:11,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:08:11,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:08:11,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:08:11,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:08:11,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:07:52" (1/3) ... [2022-11-18 21:08:11,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5969a55f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:08:11, skipping insertion in model container [2022-11-18 21:08:11,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:58" (2/3) ... [2022-11-18 21:08:11,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5969a55f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:08:11, skipping insertion in model container [2022-11-18 21:08:11,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:08:11" (3/3) ... [2022-11-18 21:08:11,362 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.07.cil-1.c [2022-11-18 21:08:11,388 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:08:11,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 21:08:11,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:08:11,583 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;@4da3ce0a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:08:11,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 21:08:11,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-18 21:08:11,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 21:08:11,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:11,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:11,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:11,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:11,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2022-11-18 21:08:11,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:11,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077369338] [2022-11-18 21:08:11,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:11,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:12,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:08:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:12,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:08:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:12,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 21:08:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:12,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 21:08:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:12,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 21:08:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:12,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:12,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077369338] [2022-11-18 21:08:12,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077369338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:12,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:12,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:08:12,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442781853] [2022-11-18 21:08:12,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:12,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:08:12,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:12,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:08:12,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:08:12,506 INFO L87 Difference]: Start difference. First operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:08:14,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:14,759 INFO L93 Difference]: Finished difference Result 4955 states and 9127 transitions. [2022-11-18 21:08:14,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:08:14,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-18 21:08:14,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:14,820 INFO L225 Difference]: With dead ends: 4955 [2022-11-18 21:08:14,821 INFO L226 Difference]: Without dead ends: 2460 [2022-11-18 21:08:14,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:08:14,840 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 657 mSDsluCounter, 12335 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 16595 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:08:14,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 16595 Invalid, 697 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 21:08:14,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2022-11-18 21:08:15,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2373. [2022-11-18 21:08:15,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.83660409556314) internal successors, (4305), 2346 states have internal predecessors, (4305), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-18 21:08:15,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4347 transitions. [2022-11-18 21:08:15,180 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4347 transitions. Word has length 123 [2022-11-18 21:08:15,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:15,181 INFO L495 AbstractCegarLoop]: Abstraction has 2373 states and 4347 transitions. [2022-11-18 21:08:15,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:08:15,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4347 transitions. [2022-11-18 21:08:15,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 21:08:15,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:15,191 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:15,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:08:15,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:15,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:15,193 INFO L85 PathProgramCache]: Analyzing trace with hash 796600300, now seen corresponding path program 1 times [2022-11-18 21:08:15,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:15,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688905961] [2022-11-18 21:08:15,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:15,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:15,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:08:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:15,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:08:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:15,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 21:08:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:15,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 21:08:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:15,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 21:08:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:15,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:15,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:15,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688905961] [2022-11-18 21:08:15,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688905961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:15,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:15,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 21:08:15,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331350839] [2022-11-18 21:08:15,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:15,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:08:15,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:15,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:08:15,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:08:15,509 INFO L87 Difference]: Start difference. First operand 2373 states and 4347 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:08:18,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:18,537 INFO L93 Difference]: Finished difference Result 3029 states and 5394 transitions. [2022-11-18 21:08:18,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:08:18,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-18 21:08:18,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:18,560 INFO L225 Difference]: With dead ends: 3029 [2022-11-18 21:08:18,560 INFO L226 Difference]: Without dead ends: 2792 [2022-11-18 21:08:18,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:08:18,568 INFO L413 NwaCegarLoop]: 4196 mSDtfsCounter, 4943 mSDsluCounter, 12503 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4957 SdHoareTripleChecker+Valid, 16699 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:08:18,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4957 Valid, 16699 Invalid, 1593 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 21:08:18,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2022-11-18 21:08:18,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2619. [2022-11-18 21:08:18,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8137904168289833) internal successors, (4656), 2570 states have internal predecessors, (4656), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-11-18 21:08:18,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4733 transitions. [2022-11-18 21:08:18,763 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4733 transitions. Word has length 123 [2022-11-18 21:08:18,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:18,763 INFO L495 AbstractCegarLoop]: Abstraction has 2619 states and 4733 transitions. [2022-11-18 21:08:18,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:08:18,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4733 transitions. [2022-11-18 21:08:18,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 21:08:18,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:18,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:18,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 21:08:18,768 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:18,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:18,769 INFO L85 PathProgramCache]: Analyzing trace with hash 71036272, now seen corresponding path program 1 times [2022-11-18 21:08:18,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:18,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582603783] [2022-11-18 21:08:18,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:18,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:18,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:08:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:18,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:08:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:19,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 21:08:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:19,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 21:08:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:19,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 21:08:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:19,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:19,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582603783] [2022-11-18 21:08:19,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582603783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:19,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:19,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:08:19,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286201139] [2022-11-18 21:08:19,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:19,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:08:19,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:19,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:08:19,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:08:19,072 INFO L87 Difference]: Start difference. First operand 2619 states and 4733 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:08:22,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:22,968 INFO L93 Difference]: Finished difference Result 3617 states and 6323 transitions. [2022-11-18 21:08:22,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:08:22,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-18 21:08:22,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:22,986 INFO L225 Difference]: With dead ends: 3617 [2022-11-18 21:08:22,986 INFO L226 Difference]: Without dead ends: 3134 [2022-11-18 21:08:22,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:08:22,991 INFO L413 NwaCegarLoop]: 4329 mSDtfsCounter, 4956 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4970 SdHoareTripleChecker+Valid, 21393 SdHoareTripleChecker+Invalid, 2328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:08:22,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4970 Valid, 21393 Invalid, 2328 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-18 21:08:22,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2022-11-18 21:08:23,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2848. [2022-11-18 21:08:23,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2773 states have (on average 1.7933645870897945) internal successors, (4973), 2777 states have internal predecessors, (4973), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-11-18 21:08:23,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 5084 transitions. [2022-11-18 21:08:23,163 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 5084 transitions. Word has length 123 [2022-11-18 21:08:23,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:23,165 INFO L495 AbstractCegarLoop]: Abstraction has 2848 states and 5084 transitions. [2022-11-18 21:08:23,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:08:23,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 5084 transitions. [2022-11-18 21:08:23,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 21:08:23,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:23,171 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:23,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 21:08:23,171 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:23,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:23,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1460330286, now seen corresponding path program 1 times [2022-11-18 21:08:23,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:23,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936843930] [2022-11-18 21:08:23,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:23,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:23,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:08:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:23,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:08:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:23,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 21:08:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:23,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 21:08:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:23,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 21:08:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:23,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:23,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:23,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936843930] [2022-11-18 21:08:23,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936843930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:23,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:23,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:08:23,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012315711] [2022-11-18 21:08:23,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:23,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:08:23,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:23,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:08:23,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:08:23,528 INFO L87 Difference]: Start difference. First operand 2848 states and 5084 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:08:27,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:27,184 INFO L93 Difference]: Finished difference Result 4483 states and 7682 transitions. [2022-11-18 21:08:27,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:08:27,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-18 21:08:27,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:27,204 INFO L225 Difference]: With dead ends: 4483 [2022-11-18 21:08:27,204 INFO L226 Difference]: Without dead ends: 3771 [2022-11-18 21:08:27,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:08:27,210 INFO L413 NwaCegarLoop]: 4327 mSDtfsCounter, 4954 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4968 SdHoareTripleChecker+Valid, 21391 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:08:27,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4968 Valid, 21391 Invalid, 2326 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-18 21:08:27,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2022-11-18 21:08:27,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 3307. [2022-11-18 21:08:27,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3307 states, 3186 states have (on average 1.7602008788449466) internal successors, (5608), 3192 states have internal predecessors, (5608), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2022-11-18 21:08:27,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 5791 transitions. [2022-11-18 21:08:27,427 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 5791 transitions. Word has length 123 [2022-11-18 21:08:27,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:27,427 INFO L495 AbstractCegarLoop]: Abstraction has 3307 states and 5791 transitions. [2022-11-18 21:08:27,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:08:27,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 5791 transitions. [2022-11-18 21:08:27,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 21:08:27,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:27,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:27,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 21:08:27,431 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:27,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:27,432 INFO L85 PathProgramCache]: Analyzing trace with hash -573063760, now seen corresponding path program 1 times [2022-11-18 21:08:27,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:27,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859474979] [2022-11-18 21:08:27,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:27,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:27,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:08:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:27,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:08:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:27,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 21:08:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 21:08:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:27,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 21:08:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:27,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:27,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859474979] [2022-11-18 21:08:27,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859474979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:27,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:27,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:08:27,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484251912] [2022-11-18 21:08:27,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:27,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:08:27,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:27,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:08:27,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:08:27,690 INFO L87 Difference]: Start difference. First operand 3307 states and 5791 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:08:31,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:31,547 INFO L93 Difference]: Finished difference Result 6150 states and 10285 transitions. [2022-11-18 21:08:31,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:08:31,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-18 21:08:31,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:31,576 INFO L225 Difference]: With dead ends: 6150 [2022-11-18 21:08:31,577 INFO L226 Difference]: Without dead ends: 4979 [2022-11-18 21:08:31,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:08:31,597 INFO L413 NwaCegarLoop]: 4327 mSDtfsCounter, 4950 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4964 SdHoareTripleChecker+Valid, 21391 SdHoareTripleChecker+Invalid, 2317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:08:31,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4964 Valid, 21391 Invalid, 2317 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [55 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-18 21:08:31,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2022-11-18 21:08:32,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 4226. [2022-11-18 21:08:32,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4226 states, 4013 states have (on average 1.7139297283827561) internal successors, (6878), 4023 states have internal predecessors, (6878), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2022-11-18 21:08:32,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 7211 transitions. [2022-11-18 21:08:32,169 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 7211 transitions. Word has length 123 [2022-11-18 21:08:32,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:32,170 INFO L495 AbstractCegarLoop]: Abstraction has 4226 states and 7211 transitions. [2022-11-18 21:08:32,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:08:32,171 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 7211 transitions. [2022-11-18 21:08:32,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 21:08:32,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:32,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:32,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 21:08:32,175 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:32,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:32,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1855194862, now seen corresponding path program 1 times [2022-11-18 21:08:32,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:32,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806890666] [2022-11-18 21:08:32,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:32,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:32,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:08:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:32,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:08:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:32,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 21:08:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:32,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 21:08:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:32,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 21:08:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:32,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:32,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806890666] [2022-11-18 21:08:32,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806890666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:32,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:32,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:08:32,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551873882] [2022-11-18 21:08:32,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:32,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:08:32,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:32,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:08:32,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:08:32,445 INFO L87 Difference]: Start difference. First operand 4226 states and 7211 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:08:36,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:36,323 INFO L93 Difference]: Finished difference Result 9483 states and 15507 transitions. [2022-11-18 21:08:36,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:08:36,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-18 21:08:36,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:36,377 INFO L225 Difference]: With dead ends: 9483 [2022-11-18 21:08:36,377 INFO L226 Difference]: Without dead ends: 7393 [2022-11-18 21:08:36,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:08:36,393 INFO L413 NwaCegarLoop]: 4327 mSDtfsCounter, 4946 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4960 SdHoareTripleChecker+Valid, 21391 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:08:36,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4960 Valid, 21391 Invalid, 2308 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 2253 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-18 21:08:36,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7393 states. [2022-11-18 21:08:36,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7393 to 6069. [2022-11-18 21:08:36,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6069 states, 5672 states have (on average 1.6614950634696757) internal successors, (9424), 5690 states have internal predecessors, (9424), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2022-11-18 21:08:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6069 states to 6069 states and 10075 transitions. [2022-11-18 21:08:36,957 INFO L78 Accepts]: Start accepts. Automaton has 6069 states and 10075 transitions. Word has length 123 [2022-11-18 21:08:36,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:36,958 INFO L495 AbstractCegarLoop]: Abstraction has 6069 states and 10075 transitions. [2022-11-18 21:08:36,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:08:36,959 INFO L276 IsEmpty]: Start isEmpty. Operand 6069 states and 10075 transitions. [2022-11-18 21:08:36,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 21:08:36,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:36,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:36,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 21:08:36,965 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:36,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:36,966 INFO L85 PathProgramCache]: Analyzing trace with hash 548052464, now seen corresponding path program 1 times [2022-11-18 21:08:36,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:36,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188804800] [2022-11-18 21:08:36,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:36,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:37,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:08:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:37,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:08:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:37,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 21:08:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:37,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 21:08:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:37,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 21:08:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:37,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:37,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188804800] [2022-11-18 21:08:37,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188804800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:37,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:37,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:08:37,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350662187] [2022-11-18 21:08:37,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:37,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:08:37,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:37,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:08:37,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:08:37,283 INFO L87 Difference]: Start difference. First operand 6069 states and 10075 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:08:41,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:41,302 INFO L93 Difference]: Finished difference Result 16148 states and 26009 transitions. [2022-11-18 21:08:41,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:08:41,303 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-18 21:08:41,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:41,350 INFO L225 Difference]: With dead ends: 16148 [2022-11-18 21:08:41,350 INFO L226 Difference]: Without dead ends: 12215 [2022-11-18 21:08:41,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:08:41,367 INFO L413 NwaCegarLoop]: 4327 mSDtfsCounter, 4948 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4962 SdHoareTripleChecker+Valid, 21391 SdHoareTripleChecker+Invalid, 2294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:08:41,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4962 Valid, 21391 Invalid, 2294 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 21:08:41,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12215 states. [2022-11-18 21:08:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12215 to 9768. [2022-11-18 21:08:42,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9003 states have (on average 1.6143507719649006) internal successors, (14534), 9037 states have internal predecessors, (14534), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-11-18 21:08:42,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15875 transitions. [2022-11-18 21:08:42,272 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15875 transitions. Word has length 123 [2022-11-18 21:08:42,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:42,273 INFO L495 AbstractCegarLoop]: Abstraction has 9768 states and 15875 transitions. [2022-11-18 21:08:42,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:08:42,273 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15875 transitions. [2022-11-18 21:08:42,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 21:08:42,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:42,281 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:42,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 21:08:42,285 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:42,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:42,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1849418066, now seen corresponding path program 1 times [2022-11-18 21:08:42,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:42,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801430272] [2022-11-18 21:08:42,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:42,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:42,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:08:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:42,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:08:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:42,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 21:08:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:42,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 21:08:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:42,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 21:08:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:42,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:42,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801430272] [2022-11-18 21:08:42,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801430272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:42,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:42,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:08:42,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51599537] [2022-11-18 21:08:42,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:42,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:08:42,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:42,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:08:42,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:08:42,506 INFO L87 Difference]: Start difference. First operand 9768 states and 15875 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:08:45,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:45,204 INFO L93 Difference]: Finished difference Result 19942 states and 32204 transitions. [2022-11-18 21:08:45,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:08:45,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-18 21:08:45,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:45,252 INFO L225 Difference]: With dead ends: 19942 [2022-11-18 21:08:45,252 INFO L226 Difference]: Without dead ends: 12310 [2022-11-18 21:08:45,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:08:45,277 INFO L413 NwaCegarLoop]: 4156 mSDtfsCounter, 4795 mSDsluCounter, 12356 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4810 SdHoareTripleChecker+Valid, 16512 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:08:45,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4810 Valid, 16512 Invalid, 1093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 21:08:45,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12310 states. [2022-11-18 21:08:46,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12310 to 9768. [2022-11-18 21:08:46,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9003 states have (on average 1.6106853271131845) internal successors, (14501), 9037 states have internal predecessors, (14501), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-11-18 21:08:46,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15842 transitions. [2022-11-18 21:08:46,097 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15842 transitions. Word has length 123 [2022-11-18 21:08:46,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:46,097 INFO L495 AbstractCegarLoop]: Abstraction has 9768 states and 15842 transitions. [2022-11-18 21:08:46,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:08:46,098 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15842 transitions. [2022-11-18 21:08:46,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 21:08:46,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:46,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:46,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 21:08:46,105 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:46,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:46,106 INFO L85 PathProgramCache]: Analyzing trace with hash 539145964, now seen corresponding path program 1 times [2022-11-18 21:08:46,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:46,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561658425] [2022-11-18 21:08:46,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:46,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:46,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:08:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:46,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:08:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:46,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 21:08:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:46,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 21:08:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:46,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 21:08:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:46,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:46,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561658425] [2022-11-18 21:08:46,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561658425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:46,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:46,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:08:46,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543801150] [2022-11-18 21:08:46,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:46,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:08:46,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:46,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:08:46,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:08:46,325 INFO L87 Difference]: Start difference. First operand 9768 states and 15842 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:08:52,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:52,085 INFO L93 Difference]: Finished difference Result 32836 states and 52097 transitions. [2022-11-18 21:08:52,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:08:52,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-18 21:08:52,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:52,182 INFO L225 Difference]: With dead ends: 32836 [2022-11-18 21:08:52,183 INFO L226 Difference]: Without dead ends: 25204 [2022-11-18 21:08:52,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:08:52,216 INFO L413 NwaCegarLoop]: 4325 mSDtfsCounter, 5228 mSDsluCounter, 17056 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21381 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:08:52,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21381 Invalid, 2239 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 21:08:52,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25204 states. [2022-11-18 21:08:54,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25204 to 17165. [2022-11-18 21:08:54,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17165 states, 15696 states have (on average 1.5779179408766564) internal successors, (24767), 15762 states have internal predecessors, (24767), 1013 states have call successors, (1013), 390 states have call predecessors, (1013), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2022-11-18 21:08:54,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17165 states to 17165 states and 27586 transitions. [2022-11-18 21:08:54,337 INFO L78 Accepts]: Start accepts. Automaton has 17165 states and 27586 transitions. Word has length 123 [2022-11-18 21:08:54,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:54,337 INFO L495 AbstractCegarLoop]: Abstraction has 17165 states and 27586 transitions. [2022-11-18 21:08:54,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:08:54,338 INFO L276 IsEmpty]: Start isEmpty. Operand 17165 states and 27586 transitions. [2022-11-18 21:08:54,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 21:08:54,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:54,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:54,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 21:08:54,351 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:54,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:54,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2140217070, now seen corresponding path program 1 times [2022-11-18 21:08:54,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:54,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539184386] [2022-11-18 21:08:54,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:54,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:54,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:08:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:54,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:08:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:54,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 21:08:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:54,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 21:08:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:54,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 21:08:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:54,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:54,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539184386] [2022-11-18 21:08:54,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539184386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:54,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:54,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:08:54,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797635853] [2022-11-18 21:08:54,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:54,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:08:54,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:54,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:08:54,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:08:54,559 INFO L87 Difference]: Start difference. First operand 17165 states and 27586 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:09:04,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:09:04,023 INFO L93 Difference]: Finished difference Result 61867 states and 98487 transitions. [2022-11-18 21:09:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:09:04,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-18 21:09:04,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:09:04,220 INFO L225 Difference]: With dead ends: 61867 [2022-11-18 21:09:04,220 INFO L226 Difference]: Without dead ends: 46838 [2022-11-18 21:09:04,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:09:04,276 INFO L413 NwaCegarLoop]: 4324 mSDtfsCounter, 4998 mSDsluCounter, 17053 mSDsCounter, 0 mSdLazyCounter, 2597 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5011 SdHoareTripleChecker+Valid, 21377 SdHoareTripleChecker+Invalid, 2654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:09:04,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5011 Valid, 21377 Invalid, 2654 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2597 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 21:09:04,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46838 states. [2022-11-18 21:09:07,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46838 to 31602. [2022-11-18 21:09:07,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31602 states, 28757 states have (on average 1.5581945265500574) internal successors, (44809), 28887 states have internal predecessors, (44809), 1941 states have call successors, (1941), 774 states have call predecessors, (1941), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2022-11-18 21:09:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31602 states to 31602 states and 51006 transitions. [2022-11-18 21:09:08,233 INFO L78 Accepts]: Start accepts. Automaton has 31602 states and 51006 transitions. Word has length 123 [2022-11-18 21:09:08,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:09:08,234 INFO L495 AbstractCegarLoop]: Abstraction has 31602 states and 51006 transitions. [2022-11-18 21:09:08,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:09:08,234 INFO L276 IsEmpty]: Start isEmpty. Operand 31602 states and 51006 transitions. [2022-11-18 21:09:08,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 21:09:08,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:08,255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:08,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 21:09:08,255 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:08,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:08,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1083485868, now seen corresponding path program 1 times [2022-11-18 21:09:08,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:08,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476102368] [2022-11-18 21:09:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:08,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:08,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:09:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:08,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:09:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:08,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 21:09:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:08,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 21:09:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:08,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 21:09:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:08,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:08,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:08,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476102368] [2022-11-18 21:09:08,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476102368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:08,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:08,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:09:08,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895515206] [2022-11-18 21:09:08,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:08,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:09:08,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:08,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:09:08,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:09:08,484 INFO L87 Difference]: Start difference. First operand 31602 states and 51006 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:09:25,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:09:25,161 INFO L93 Difference]: Finished difference Result 117782 states and 189717 transitions. [2022-11-18 21:09:25,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:09:25,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-18 21:09:25,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:09:25,501 INFO L225 Difference]: With dead ends: 117782 [2022-11-18 21:09:25,501 INFO L226 Difference]: Without dead ends: 88316 [2022-11-18 21:09:25,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:09:25,600 INFO L413 NwaCegarLoop]: 4325 mSDtfsCounter, 5148 mSDsluCounter, 17056 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5170 SdHoareTripleChecker+Valid, 21381 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:09:25,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5170 Valid, 21381 Invalid, 2213 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 21:09:25,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88316 states. [2022-11-18 21:09:33,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88316 to 60731. [2022-11-18 21:09:33,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60731 states, 55198 states have (on average 1.5483713178013696) internal successors, (85467), 55456 states have internal predecessors, (85467), 3733 states have call successors, (3733), 1542 states have call predecessors, (3733), 1798 states have return successors, (10550), 3988 states have call predecessors, (10550), 3733 states have call successors, (10550) [2022-11-18 21:09:33,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60731 states to 60731 states and 99750 transitions. [2022-11-18 21:09:33,553 INFO L78 Accepts]: Start accepts. Automaton has 60731 states and 99750 transitions. Word has length 123 [2022-11-18 21:09:33,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:09:33,553 INFO L495 AbstractCegarLoop]: Abstraction has 60731 states and 99750 transitions. [2022-11-18 21:09:33,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:09:33,553 INFO L276 IsEmpty]: Start isEmpty. Operand 60731 states and 99750 transitions. [2022-11-18 21:09:33,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 21:09:33,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:33,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:33,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 21:09:33,595 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:33,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:33,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1860096210, now seen corresponding path program 1 times [2022-11-18 21:09:33,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:33,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702977445] [2022-11-18 21:09:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:33,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:33,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:09:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:33,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:09:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:34,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 21:09:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:34,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 21:09:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:34,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 21:09:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:34,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:34,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702977445] [2022-11-18 21:09:34,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702977445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:34,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:34,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:09:34,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376157330] [2022-11-18 21:09:34,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:34,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:09:34,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:34,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:09:34,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:09:34,041 INFO L87 Difference]: Start difference. First operand 60731 states and 99750 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)