./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8 --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 291c2115713bbaa0f9f6deebfd096e226de91dfa7091a11105c0815d1cda6526 --- 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-2329fc7 [2022-12-13 10:55:01,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 10:55:01,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 10:55:01,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 10:55:01,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 10:55:01,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 10:55:01,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 10:55:01,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 10:55:01,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 10:55:01,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 10:55:01,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 10:55:01,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 10:55:01,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 10:55:01,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 10:55:01,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 10:55:01,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 10:55:01,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 10:55:01,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 10:55:01,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 10:55:01,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 10:55:01,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 10:55:01,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 10:55:01,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 10:55:01,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 10:55:01,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 10:55:01,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 10:55:01,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 10:55:01,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 10:55:01,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 10:55:01,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 10:55:01,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 10:55:01,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 10:55:01,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 10:55:01,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 10:55:01,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 10:55:01,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 10:55:01,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 10:55:01,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 10:55:01,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 10:55:01,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 10:55:01,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 10:55:01,822 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 10:55:01,838 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 10:55:01,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 10:55:01,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 10:55:01,839 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 10:55:01,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 10:55:01,840 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 10:55:01,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 10:55:01,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 10:55:01,840 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 10:55:01,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 10:55:01,841 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 10:55:01,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 10:55:01,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 10:55:01,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 10:55:01,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 10:55:01,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 10:55:01,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 10:55:01,842 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 10:55:01,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 10:55:01,842 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 10:55:01,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 10:55:01,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 10:55:01,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 10:55:01,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 10:55:01,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:55:01,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 10:55:01,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 10:55:01,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 10:55:01,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 10:55:01,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 10:55:01,844 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 10:55:01,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 10:55:01,844 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 10:55:01,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 10:55:01,845 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 10:55:01,845 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 291c2115713bbaa0f9f6deebfd096e226de91dfa7091a11105c0815d1cda6526 [2022-12-13 10:55:02,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 10:55:02,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 10:55:02,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 10:55:02,032 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 10:55:02,033 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 10:55:02,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-12-13 10:55:04,618 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 10:55:04,809 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 10:55:04,809 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-12-13 10:55:04,816 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/data/764cc2ef9/c61977ca1eff45eead2723941bef739b/FLAG1e1fe62b9 [2022-12-13 10:55:04,826 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/data/764cc2ef9/c61977ca1eff45eead2723941bef739b [2022-12-13 10:55:04,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 10:55:04,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 10:55:04,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 10:55:04,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 10:55:04,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 10:55:04,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:55:04" (1/1) ... [2022-12-13 10:55:04,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18323eb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:04, skipping insertion in model container [2022-12-13 10:55:04,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:55:04" (1/1) ... [2022-12-13 10:55:04,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 10:55:04,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 10:55:05,030 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7181,7194] [2022-12-13 10:55:05,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:55:05,069 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 10:55:05,105 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7181,7194] [2022-12-13 10:55:05,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:55:05,141 INFO L208 MainTranslator]: Completed translation [2022-12-13 10:55:05,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:05 WrapperNode [2022-12-13 10:55:05,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 10:55:05,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 10:55:05,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 10:55:05,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 10:55:05,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:05" (1/1) ... [2022-12-13 10:55:05,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:05" (1/1) ... [2022-12-13 10:55:05,190 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 572 [2022-12-13 10:55:05,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 10:55:05,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 10:55:05,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 10:55:05,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 10:55:05,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:05" (1/1) ... [2022-12-13 10:55:05,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:05" (1/1) ... [2022-12-13 10:55:05,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:05" (1/1) ... [2022-12-13 10:55:05,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:05" (1/1) ... [2022-12-13 10:55:05,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:05" (1/1) ... [2022-12-13 10:55:05,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:05" (1/1) ... [2022-12-13 10:55:05,220 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:05" (1/1) ... [2022-12-13 10:55:05,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:05" (1/1) ... [2022-12-13 10:55:05,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 10:55:05,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 10:55:05,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 10:55:05,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 10:55:05,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:05" (1/1) ... [2022-12-13 10:55:05,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:55:05,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:55:05,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 10:55:05,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 10:55:05,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 10:55:05,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 10:55:05,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 10:55:05,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 10:55:05,403 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 10:55:05,404 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 10:55:05,808 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 10:55:05,817 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 10:55:05,817 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 10:55:05,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:55:05 BoogieIcfgContainer [2022-12-13 10:55:05,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 10:55:05,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 10:55:05,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 10:55:05,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 10:55:05,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:55:04" (1/3) ... [2022-12-13 10:55:05,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77022672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:55:05, skipping insertion in model container [2022-12-13 10:55:05,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:05" (2/3) ... [2022-12-13 10:55:05,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77022672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:55:05, skipping insertion in model container [2022-12-13 10:55:05,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:55:05" (3/3) ... [2022-12-13 10:55:05,830 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-12-13 10:55:05,846 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 10:55:05,846 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 10:55:05,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 10:55:05,894 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;@2b891404, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 10:55:05,894 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 10:55:05,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 132 states have (on average 1.75) internal successors, (231), 139 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:05,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-13 10:55:05,907 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:05,908 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] [2022-12-13 10:55:05,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:05,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:05,912 INFO L85 PathProgramCache]: Analyzing trace with hash -278043806, now seen corresponding path program 1 times [2022-12-13 10:55:05,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:05,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846094865] [2022-12-13 10:55:05,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:05,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:06,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:06,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:06,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846094865] [2022-12-13 10:55:06,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846094865] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:06,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:06,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:55:06,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177461935] [2022-12-13 10:55:06,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:06,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:55:06,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:06,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:55:06,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:06,290 INFO L87 Difference]: Start difference. First operand has 140 states, 132 states have (on average 1.75) internal successors, (231), 139 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:06,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:06,379 INFO L93 Difference]: Finished difference Result 313 states and 500 transitions. [2022-12-13 10:55:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:55:06,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-12-13 10:55:06,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:06,388 INFO L225 Difference]: With dead ends: 313 [2022-12-13 10:55:06,388 INFO L226 Difference]: Without dead ends: 204 [2022-12-13 10:55:06,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:06,392 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 132 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:06,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 406 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:55:06,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-12-13 10:55:06,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 201. [2022-12-13 10:55:06,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.545) internal successors, (309), 200 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:06,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 309 transitions. [2022-12-13 10:55:06,436 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 309 transitions. Word has length 50 [2022-12-13 10:55:06,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:06,436 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 309 transitions. [2022-12-13 10:55:06,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:06,437 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 309 transitions. [2022-12-13 10:55:06,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-13 10:55:06,438 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:06,438 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] [2022-12-13 10:55:06,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 10:55:06,438 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:06,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1333847823, now seen corresponding path program 1 times [2022-12-13 10:55:06,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:06,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659393973] [2022-12-13 10:55:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:06,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:06,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:06,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:06,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659393973] [2022-12-13 10:55:06,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659393973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:06,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:06,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:55:06,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550425117] [2022-12-13 10:55:06,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:06,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:55:06,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:06,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:55:06,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:06,554 INFO L87 Difference]: Start difference. First operand 201 states and 309 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:06,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:06,616 INFO L93 Difference]: Finished difference Result 493 states and 769 transitions. [2022-12-13 10:55:06,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:55:06,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-12-13 10:55:06,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:06,619 INFO L225 Difference]: With dead ends: 493 [2022-12-13 10:55:06,619 INFO L226 Difference]: Without dead ends: 340 [2022-12-13 10:55:06,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:06,621 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 110 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:06,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 369 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:55:06,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-12-13 10:55:06,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 336. [2022-12-13 10:55:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 1.5492537313432835) internal successors, (519), 335 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 519 transitions. [2022-12-13 10:55:06,663 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 519 transitions. Word has length 52 [2022-12-13 10:55:06,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:06,673 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 519 transitions. [2022-12-13 10:55:06,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:06,673 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 519 transitions. [2022-12-13 10:55:06,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-13 10:55:06,675 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:06,675 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] [2022-12-13 10:55:06,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 10:55:06,676 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:06,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:06,676 INFO L85 PathProgramCache]: Analyzing trace with hash 329846722, now seen corresponding path program 1 times [2022-12-13 10:55:06,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:06,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334027262] [2022-12-13 10:55:06,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:06,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:06,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:06,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:06,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334027262] [2022-12-13 10:55:06,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334027262] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:06,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:06,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:55:06,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159246630] [2022-12-13 10:55:06,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:06,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:55:06,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:06,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:55:06,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:06,771 INFO L87 Difference]: Start difference. First operand 336 states and 519 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:06,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:06,841 INFO L93 Difference]: Finished difference Result 884 states and 1373 transitions. [2022-12-13 10:55:06,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:55:06,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-12-13 10:55:06,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:06,844 INFO L225 Difference]: With dead ends: 884 [2022-12-13 10:55:06,844 INFO L226 Difference]: Without dead ends: 596 [2022-12-13 10:55:06,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:06,847 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 105 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:06,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 370 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:55:06,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-12-13 10:55:06,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 590. [2022-12-13 10:55:06,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 1.5398981324278438) internal successors, (907), 589 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:06,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 907 transitions. [2022-12-13 10:55:06,905 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 907 transitions. Word has length 54 [2022-12-13 10:55:06,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:06,905 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 907 transitions. [2022-12-13 10:55:06,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:06,906 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 907 transitions. [2022-12-13 10:55:06,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 10:55:06,908 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:06,908 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] [2022-12-13 10:55:06,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 10:55:06,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:06,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:06,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1296814383, now seen corresponding path program 1 times [2022-12-13 10:55:06,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:06,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135668782] [2022-12-13 10:55:06,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:06,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:07,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:07,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135668782] [2022-12-13 10:55:07,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135668782] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:07,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:07,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:55:07,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979240775] [2022-12-13 10:55:07,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:07,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:55:07,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:07,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:55:07,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:55:07,021 INFO L87 Difference]: Start difference. First operand 590 states and 907 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:07,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:07,237 INFO L93 Difference]: Finished difference Result 2560 states and 4013 transitions. [2022-12-13 10:55:07,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 10:55:07,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-12-13 10:55:07,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:07,243 INFO L225 Difference]: With dead ends: 2560 [2022-12-13 10:55:07,243 INFO L226 Difference]: Without dead ends: 2008 [2022-12-13 10:55:07,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 10:55:07,245 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 802 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:07,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 1247 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 10:55:07,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2022-12-13 10:55:07,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 1043. [2022-12-13 10:55:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1042 states have (on average 1.5585412667946257) internal successors, (1624), 1042 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:07,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1624 transitions. [2022-12-13 10:55:07,323 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1624 transitions. Word has length 56 [2022-12-13 10:55:07,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:07,323 INFO L495 AbstractCegarLoop]: Abstraction has 1043 states and 1624 transitions. [2022-12-13 10:55:07,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:07,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1624 transitions. [2022-12-13 10:55:07,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-13 10:55:07,325 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:07,325 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] [2022-12-13 10:55:07,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 10:55:07,326 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:07,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:07,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1484036003, now seen corresponding path program 1 times [2022-12-13 10:55:07,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:07,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104046833] [2022-12-13 10:55:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:07,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:07,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:07,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:07,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104046833] [2022-12-13 10:55:07,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104046833] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:07,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:07,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:55:07,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111171598] [2022-12-13 10:55:07,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:07,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 10:55:07,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:07,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 10:55:07,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 10:55:07,423 INFO L87 Difference]: Start difference. First operand 1043 states and 1624 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:07,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:07,616 INFO L93 Difference]: Finished difference Result 3052 states and 4796 transitions. [2022-12-13 10:55:07,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:55:07,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-12-13 10:55:07,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:07,621 INFO L225 Difference]: With dead ends: 3052 [2022-12-13 10:55:07,621 INFO L226 Difference]: Without dead ends: 2057 [2022-12-13 10:55:07,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:55:07,623 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 378 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:07,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 598 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:55:07,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2022-12-13 10:55:07,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1538. [2022-12-13 10:55:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 1.560832791151594) internal successors, (2399), 1537 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:07,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2399 transitions. [2022-12-13 10:55:07,742 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2399 transitions. Word has length 57 [2022-12-13 10:55:07,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:07,742 INFO L495 AbstractCegarLoop]: Abstraction has 1538 states and 2399 transitions. [2022-12-13 10:55:07,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:07,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2399 transitions. [2022-12-13 10:55:07,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 10:55:07,743 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:07,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:07,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 10:55:07,744 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:07,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:07,744 INFO L85 PathProgramCache]: Analyzing trace with hash -370820470, now seen corresponding path program 1 times [2022-12-13 10:55:07,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:07,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992390267] [2022-12-13 10:55:07,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:07,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:07,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:07,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:07,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992390267] [2022-12-13 10:55:07,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992390267] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:07,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:07,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:55:07,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568171633] [2022-12-13 10:55:07,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:07,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:55:07,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:07,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:55:07,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:07,804 INFO L87 Difference]: Start difference. First operand 1538 states and 2399 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:07,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:07,940 INFO L93 Difference]: Finished difference Result 3014 states and 4718 transitions. [2022-12-13 10:55:07,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:55:07,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-12-13 10:55:07,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:07,946 INFO L225 Difference]: With dead ends: 3014 [2022-12-13 10:55:07,946 INFO L226 Difference]: Without dead ends: 2162 [2022-12-13 10:55:07,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:07,948 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 109 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:07,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 428 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:55:07,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2022-12-13 10:55:08,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 2160. [2022-12-13 10:55:08,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2160 states, 2159 states have (on average 1.552570634553034) internal successors, (3352), 2159 states have internal predecessors, (3352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:08,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 3352 transitions. [2022-12-13 10:55:08,092 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 3352 transitions. Word has length 59 [2022-12-13 10:55:08,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:08,093 INFO L495 AbstractCegarLoop]: Abstraction has 2160 states and 3352 transitions. [2022-12-13 10:55:08,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:08,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 3352 transitions. [2022-12-13 10:55:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 10:55:08,094 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:08,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:08,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 10:55:08,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:08,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:08,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1594203451, now seen corresponding path program 1 times [2022-12-13 10:55:08,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:08,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4370476] [2022-12-13 10:55:08,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:08,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:08,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:08,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4370476] [2022-12-13 10:55:08,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4370476] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:08,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:08,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:55:08,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576673642] [2022-12-13 10:55:08,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:08,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:55:08,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:08,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:55:08,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:08,152 INFO L87 Difference]: Start difference. First operand 2160 states and 3352 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:08,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:08,455 INFO L93 Difference]: Finished difference Result 4176 states and 6504 transitions. [2022-12-13 10:55:08,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:55:08,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-12-13 10:55:08,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:08,467 INFO L225 Difference]: With dead ends: 4176 [2022-12-13 10:55:08,467 INFO L226 Difference]: Without dead ends: 3003 [2022-12-13 10:55:08,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:08,470 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 104 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:08,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 410 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:55:08,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2022-12-13 10:55:08,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 3001. [2022-12-13 10:55:08,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3001 states, 3000 states have (on average 1.5426666666666666) internal successors, (4628), 3000 states have internal predecessors, (4628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:08,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 4628 transitions. [2022-12-13 10:55:08,662 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 4628 transitions. Word has length 59 [2022-12-13 10:55:08,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:08,662 INFO L495 AbstractCegarLoop]: Abstraction has 3001 states and 4628 transitions. [2022-12-13 10:55:08,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:08,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 4628 transitions. [2022-12-13 10:55:08,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 10:55:08,663 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:08,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:08,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 10:55:08,664 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:08,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:08,664 INFO L85 PathProgramCache]: Analyzing trace with hash -515214271, now seen corresponding path program 1 times [2022-12-13 10:55:08,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:08,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940409026] [2022-12-13 10:55:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:08,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:08,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:08,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940409026] [2022-12-13 10:55:08,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940409026] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:08,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:08,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:55:08,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397183293] [2022-12-13 10:55:08,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:08,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:55:08,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:08,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:55:08,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:08,712 INFO L87 Difference]: Start difference. First operand 3001 states and 4628 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:09,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:09,047 INFO L93 Difference]: Finished difference Result 6423 states and 9933 transitions. [2022-12-13 10:55:09,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:55:09,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-12-13 10:55:09,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:09,064 INFO L225 Difference]: With dead ends: 6423 [2022-12-13 10:55:09,064 INFO L226 Difference]: Without dead ends: 4300 [2022-12-13 10:55:09,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:09,068 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 114 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:09,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 457 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:55:09,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4300 states. [2022-12-13 10:55:09,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4300 to 4298. [2022-12-13 10:55:09,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4297 states have (on average 1.529206423085874) internal successors, (6571), 4297 states have internal predecessors, (6571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:09,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 6571 transitions. [2022-12-13 10:55:09,396 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 6571 transitions. Word has length 59 [2022-12-13 10:55:09,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:09,396 INFO L495 AbstractCegarLoop]: Abstraction has 4298 states and 6571 transitions. [2022-12-13 10:55:09,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:09,397 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 6571 transitions. [2022-12-13 10:55:09,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 10:55:09,397 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:09,397 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] [2022-12-13 10:55:09,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 10:55:09,398 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:09,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:09,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1070527272, now seen corresponding path program 1 times [2022-12-13 10:55:09,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:09,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368940755] [2022-12-13 10:55:09,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:09,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:09,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:09,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:09,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368940755] [2022-12-13 10:55:09,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368940755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:09,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:09,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:55:09,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777947036] [2022-12-13 10:55:09,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:09,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:55:09,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:09,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:55:09,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:55:09,593 INFO L87 Difference]: Start difference. First operand 4298 states and 6571 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:10,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:10,227 INFO L93 Difference]: Finished difference Result 7203 states and 10930 transitions. [2022-12-13 10:55:10,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:55:10,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-13 10:55:10,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:10,251 INFO L225 Difference]: With dead ends: 7203 [2022-12-13 10:55:10,251 INFO L226 Difference]: Without dead ends: 7201 [2022-12-13 10:55:10,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:55:10,254 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 242 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:10,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 931 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:55:10,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7201 states. [2022-12-13 10:55:10,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7201 to 4402. [2022-12-13 10:55:10,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 4401 states have (on average 1.5105657805044308) internal successors, (6648), 4401 states have internal predecessors, (6648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:10,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 6648 transitions. [2022-12-13 10:55:10,701 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 6648 transitions. Word has length 65 [2022-12-13 10:55:10,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:10,702 INFO L495 AbstractCegarLoop]: Abstraction has 4402 states and 6648 transitions. [2022-12-13 10:55:10,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:10,702 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 6648 transitions. [2022-12-13 10:55:10,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-13 10:55:10,703 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:10,703 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:10,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 10:55:10,704 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:10,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:10,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1104420716, now seen corresponding path program 1 times [2022-12-13 10:55:10,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:10,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710074897] [2022-12-13 10:55:10,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:10,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 10:55:10,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:10,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710074897] [2022-12-13 10:55:10,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710074897] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:10,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:10,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:55:10,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455713952] [2022-12-13 10:55:10,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:10,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:55:10,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:10,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:55:10,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:55:10,823 INFO L87 Difference]: Start difference. First operand 4402 states and 6648 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:11,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:11,679 INFO L93 Difference]: Finished difference Result 12768 states and 19347 transitions. [2022-12-13 10:55:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:55:11,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-12-13 10:55:11,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:11,696 INFO L225 Difference]: With dead ends: 12768 [2022-12-13 10:55:11,696 INFO L226 Difference]: Without dead ends: 9830 [2022-12-13 10:55:11,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:55:11,701 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 478 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:11,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 887 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:55:11,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9830 states. [2022-12-13 10:55:12,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9830 to 7087. [2022-12-13 10:55:12,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7087 states, 7086 states have (on average 1.5091730172170477) internal successors, (10694), 7086 states have internal predecessors, (10694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7087 states to 7087 states and 10694 transitions. [2022-12-13 10:55:12,219 INFO L78 Accepts]: Start accepts. Automaton has 7087 states and 10694 transitions. Word has length 87 [2022-12-13 10:55:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:12,219 INFO L495 AbstractCegarLoop]: Abstraction has 7087 states and 10694 transitions. [2022-12-13 10:55:12,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:12,219 INFO L276 IsEmpty]: Start isEmpty. Operand 7087 states and 10694 transitions. [2022-12-13 10:55:12,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-13 10:55:12,220 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:12,220 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:12,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 10:55:12,220 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:12,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:12,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1225522659, now seen corresponding path program 1 times [2022-12-13 10:55:12,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:12,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675820060] [2022-12-13 10:55:12,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:12,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 10:55:12,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:12,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675820060] [2022-12-13 10:55:12,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675820060] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:12,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:12,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:55:12,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865585068] [2022-12-13 10:55:12,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:12,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:55:12,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:12,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:55:12,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:55:12,317 INFO L87 Difference]: Start difference. First operand 7087 states and 10694 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:13,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:13,352 INFO L93 Difference]: Finished difference Result 14380 states and 21790 transitions. [2022-12-13 10:55:13,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:55:13,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-12-13 10:55:13,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:13,370 INFO L225 Difference]: With dead ends: 14380 [2022-12-13 10:55:13,370 INFO L226 Difference]: Without dead ends: 11442 [2022-12-13 10:55:13,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:55:13,374 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 484 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:13,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 883 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:55:13,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11442 states. [2022-12-13 10:55:14,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11442 to 10635. [2022-12-13 10:55:14,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10635 states, 10634 states have (on average 1.508745533195411) internal successors, (16044), 10634 states have internal predecessors, (16044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:14,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10635 states to 10635 states and 16044 transitions. [2022-12-13 10:55:14,173 INFO L78 Accepts]: Start accepts. Automaton has 10635 states and 16044 transitions. Word has length 87 [2022-12-13 10:55:14,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:14,173 INFO L495 AbstractCegarLoop]: Abstraction has 10635 states and 16044 transitions. [2022-12-13 10:55:14,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:14,173 INFO L276 IsEmpty]: Start isEmpty. Operand 10635 states and 16044 transitions. [2022-12-13 10:55:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-13 10:55:14,174 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:14,174 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:14,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 10:55:14,174 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:14,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:14,175 INFO L85 PathProgramCache]: Analyzing trace with hash 960026915, now seen corresponding path program 1 times [2022-12-13 10:55:14,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:14,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277644628] [2022-12-13 10:55:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:14,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 10:55:14,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:14,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277644628] [2022-12-13 10:55:14,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277644628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:14,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:14,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:55:14,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186637838] [2022-12-13 10:55:14,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:14,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:55:14,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:14,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:55:14,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:55:14,284 INFO L87 Difference]: Start difference. First operand 10635 states and 16044 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:15,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:15,533 INFO L93 Difference]: Finished difference Result 14901 states and 22596 transitions. [2022-12-13 10:55:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:55:15,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-12-13 10:55:15,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:15,553 INFO L225 Difference]: With dead ends: 14901 [2022-12-13 10:55:15,553 INFO L226 Difference]: Without dead ends: 13057 [2022-12-13 10:55:15,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:55:15,557 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 476 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:15,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 919 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:55:15,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13057 states. [2022-12-13 10:55:16,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13057 to 12259. [2022-12-13 10:55:16,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12259 states, 12258 states have (on average 1.5110132158590308) internal successors, (18522), 12258 states have internal predecessors, (18522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:16,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12259 states to 12259 states and 18522 transitions. [2022-12-13 10:55:16,507 INFO L78 Accepts]: Start accepts. Automaton has 12259 states and 18522 transitions. Word has length 87 [2022-12-13 10:55:16,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:16,507 INFO L495 AbstractCegarLoop]: Abstraction has 12259 states and 18522 transitions. [2022-12-13 10:55:16,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:16,507 INFO L276 IsEmpty]: Start isEmpty. Operand 12259 states and 18522 transitions. [2022-12-13 10:55:16,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-13 10:55:16,508 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:16,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:16,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 10:55:16,508 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:16,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:16,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1600537049, now seen corresponding path program 1 times [2022-12-13 10:55:16,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:16,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071872571] [2022-12-13 10:55:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:16,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 10:55:16,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:16,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071872571] [2022-12-13 10:55:16,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071872571] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:16,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:16,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:55:16,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609394734] [2022-12-13 10:55:16,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:16,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:55:16,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:16,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:55:16,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:16,548 INFO L87 Difference]: Start difference. First operand 12259 states and 18522 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:18,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:18,660 INFO L93 Difference]: Finished difference Result 26505 states and 40224 transitions. [2022-12-13 10:55:18,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:55:18,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-12-13 10:55:18,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:18,685 INFO L225 Difference]: With dead ends: 26505 [2022-12-13 10:55:18,685 INFO L226 Difference]: Without dead ends: 19700 [2022-12-13 10:55:18,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:18,697 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 95 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:18,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 355 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:55:18,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19700 states. [2022-12-13 10:55:20,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19700 to 19648. [2022-12-13 10:55:20,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19648 states, 19647 states have (on average 1.512241054613936) internal successors, (29711), 19647 states have internal predecessors, (29711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:20,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19648 states to 19648 states and 29711 transitions. [2022-12-13 10:55:20,753 INFO L78 Accepts]: Start accepts. Automaton has 19648 states and 29711 transitions. Word has length 88 [2022-12-13 10:55:20,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:20,753 INFO L495 AbstractCegarLoop]: Abstraction has 19648 states and 29711 transitions. [2022-12-13 10:55:20,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:20,753 INFO L276 IsEmpty]: Start isEmpty. Operand 19648 states and 29711 transitions. [2022-12-13 10:55:20,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-13 10:55:20,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:20,755 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:20,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 10:55:20,755 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:20,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:20,755 INFO L85 PathProgramCache]: Analyzing trace with hash -366440913, now seen corresponding path program 1 times [2022-12-13 10:55:20,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:20,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120335824] [2022-12-13 10:55:20,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:20,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 10:55:20,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:20,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120335824] [2022-12-13 10:55:20,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120335824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:20,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:20,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:55:20,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865019163] [2022-12-13 10:55:20,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:20,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 10:55:20,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:20,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 10:55:20,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 10:55:20,844 INFO L87 Difference]: Start difference. First operand 19648 states and 29711 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:23,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:23,657 INFO L93 Difference]: Finished difference Result 33334 states and 50591 transitions. [2022-12-13 10:55:23,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:55:23,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-12-13 10:55:23,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:23,686 INFO L225 Difference]: With dead ends: 33334 [2022-12-13 10:55:23,686 INFO L226 Difference]: Without dead ends: 26417 [2022-12-13 10:55:23,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 10:55:23,696 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 211 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:23,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 694 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:55:23,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26417 states. [2022-12-13 10:55:25,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26417 to 24852. [2022-12-13 10:55:25,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24852 states, 24851 states have (on average 1.5098788781135568) internal successors, (37522), 24851 states have internal predecessors, (37522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:25,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24852 states to 24852 states and 37522 transitions. [2022-12-13 10:55:25,868 INFO L78 Accepts]: Start accepts. Automaton has 24852 states and 37522 transitions. Word has length 88 [2022-12-13 10:55:25,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:25,869 INFO L495 AbstractCegarLoop]: Abstraction has 24852 states and 37522 transitions. [2022-12-13 10:55:25,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:25,869 INFO L276 IsEmpty]: Start isEmpty. Operand 24852 states and 37522 transitions. [2022-12-13 10:55:25,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-13 10:55:25,871 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:25,871 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:25,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 10:55:25,871 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:25,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:25,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1817672559, now seen corresponding path program 1 times [2022-12-13 10:55:25,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:25,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682175248] [2022-12-13 10:55:25,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:25,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:25,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:25,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682175248] [2022-12-13 10:55:25,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682175248] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:25,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:25,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:55:25,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623477427] [2022-12-13 10:55:25,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:25,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:55:25,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:25,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:55:25,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:25,920 INFO L87 Difference]: Start difference. First operand 24852 states and 37522 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:30,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:30,488 INFO L93 Difference]: Finished difference Result 72981 states and 110091 transitions. [2022-12-13 10:55:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:55:30,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-12-13 10:55:30,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:30,558 INFO L225 Difference]: With dead ends: 72981 [2022-12-13 10:55:30,558 INFO L226 Difference]: Without dead ends: 48204 [2022-12-13 10:55:30,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:30,585 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 146 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:30,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 471 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:55:30,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48204 states. [2022-12-13 10:55:35,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48204 to 48202. [2022-12-13 10:55:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48202 states, 48201 states have (on average 1.496338250243771) internal successors, (72125), 48201 states have internal predecessors, (72125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:35,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48202 states to 48202 states and 72125 transitions. [2022-12-13 10:55:35,459 INFO L78 Accepts]: Start accepts. Automaton has 48202 states and 72125 transitions. Word has length 89 [2022-12-13 10:55:35,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:35,459 INFO L495 AbstractCegarLoop]: Abstraction has 48202 states and 72125 transitions. [2022-12-13 10:55:35,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:35,459 INFO L276 IsEmpty]: Start isEmpty. Operand 48202 states and 72125 transitions. [2022-12-13 10:55:35,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-13 10:55:35,462 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:35,463 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:35,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 10:55:35,463 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:35,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:35,463 INFO L85 PathProgramCache]: Analyzing trace with hash -233998471, now seen corresponding path program 1 times [2022-12-13 10:55:35,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:35,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467508155] [2022-12-13 10:55:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:35,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:35,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:35,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467508155] [2022-12-13 10:55:35,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467508155] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:35,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:35,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:55:35,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419517106] [2022-12-13 10:55:35,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:35,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:55:35,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:35,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:55:35,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:35,515 INFO L87 Difference]: Start difference. First operand 48202 states and 72125 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:45,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:45,142 INFO L93 Difference]: Finished difference Result 141480 states and 211461 transitions. [2022-12-13 10:55:45,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:55:45,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-12-13 10:55:45,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:45,268 INFO L225 Difference]: With dead ends: 141480 [2022-12-13 10:55:45,268 INFO L226 Difference]: Without dead ends: 93393 [2022-12-13 10:55:45,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:45,307 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 128 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:45,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 438 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:55:45,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93393 states. [2022-12-13 10:55:54,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93393 to 93391. [2022-12-13 10:55:54,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93391 states, 93390 states have (on average 1.481882428525538) internal successors, (138393), 93390 states have internal predecessors, (138393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93391 states to 93391 states and 138393 transitions. [2022-12-13 10:55:54,412 INFO L78 Accepts]: Start accepts. Automaton has 93391 states and 138393 transitions. Word has length 89 [2022-12-13 10:55:54,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:54,413 INFO L495 AbstractCegarLoop]: Abstraction has 93391 states and 138393 transitions. [2022-12-13 10:55:54,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:54,413 INFO L276 IsEmpty]: Start isEmpty. Operand 93391 states and 138393 transitions. [2022-12-13 10:55:54,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 10:55:54,416 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:54,416 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:54,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 10:55:54,416 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:54,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:54,417 INFO L85 PathProgramCache]: Analyzing trace with hash -519157282, now seen corresponding path program 1 times [2022-12-13 10:55:54,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:54,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168166239] [2022-12-13 10:55:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:54,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:54,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:54,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168166239] [2022-12-13 10:55:54,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168166239] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:54,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:54,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:55:54,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664516228] [2022-12-13 10:55:54,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:54,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:55:54,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:54,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:55:54,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:54,482 INFO L87 Difference]: Start difference. First operand 93391 states and 138393 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:03,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:56:03,445 INFO L93 Difference]: Finished difference Result 181163 states and 268753 transitions. [2022-12-13 10:56:03,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:56:03,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-12-13 10:56:03,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:56:03,576 INFO L225 Difference]: With dead ends: 181163 [2022-12-13 10:56:03,577 INFO L226 Difference]: Without dead ends: 88009 [2022-12-13 10:56:03,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:56:03,634 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 88 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:56:03,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 415 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:56:03,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88009 states. [2022-12-13 10:56:12,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88009 to 88007. [2022-12-13 10:56:12,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88007 states, 88006 states have (on average 1.4740699497761516) internal successors, (129727), 88006 states have internal predecessors, (129727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:12,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88007 states to 88007 states and 129727 transitions. [2022-12-13 10:56:12,191 INFO L78 Accepts]: Start accepts. Automaton has 88007 states and 129727 transitions. Word has length 90 [2022-12-13 10:56:12,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:56:12,192 INFO L495 AbstractCegarLoop]: Abstraction has 88007 states and 129727 transitions. [2022-12-13 10:56:12,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:12,192 INFO L276 IsEmpty]: Start isEmpty. Operand 88007 states and 129727 transitions. [2022-12-13 10:56:12,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 10:56:12,194 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:56:12,194 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:56:12,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 10:56:12,195 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:56:12,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:12,195 INFO L85 PathProgramCache]: Analyzing trace with hash -562676202, now seen corresponding path program 1 times [2022-12-13 10:56:12,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:12,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547346802] [2022-12-13 10:56:12,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:12,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:12,257 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:56:12,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:56:12,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547346802] [2022-12-13 10:56:12,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547346802] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:56:12,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:56:12,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:56:12,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775385850] [2022-12-13 10:56:12,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:56:12,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:56:12,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:56:12,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:56:12,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:56:12,258 INFO L87 Difference]: Start difference. First operand 88007 states and 129727 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:16,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:56:16,002 INFO L93 Difference]: Finished difference Result 120664 states and 178230 transitions. [2022-12-13 10:56:16,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:56:16,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-12-13 10:56:16,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:56:16,042 INFO L225 Difference]: With dead ends: 120664 [2022-12-13 10:56:16,042 INFO L226 Difference]: Without dead ends: 32994 [2022-12-13 10:56:16,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:56:16,090 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 62 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:56:16,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 384 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:56:16,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32994 states. [2022-12-13 10:56:20,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32994 to 32992. [2022-12-13 10:56:20,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32992 states, 32991 states have (on average 1.4713103573701918) internal successors, (48540), 32991 states have internal predecessors, (48540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:20,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32992 states to 32992 states and 48540 transitions. [2022-12-13 10:56:20,441 INFO L78 Accepts]: Start accepts. Automaton has 32992 states and 48540 transitions. Word has length 90 [2022-12-13 10:56:20,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:56:20,441 INFO L495 AbstractCegarLoop]: Abstraction has 32992 states and 48540 transitions. [2022-12-13 10:56:20,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:20,441 INFO L276 IsEmpty]: Start isEmpty. Operand 32992 states and 48540 transitions. [2022-12-13 10:56:20,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 10:56:20,443 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:56:20,443 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:56:20,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 10:56:20,443 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:56:20,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:20,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1402347719, now seen corresponding path program 1 times [2022-12-13 10:56:20,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:20,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460603225] [2022-12-13 10:56:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:20,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:56:20,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:56:20,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460603225] [2022-12-13 10:56:20,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460603225] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:56:20,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:56:20,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:56:20,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255345505] [2022-12-13 10:56:20,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:56:20,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:56:20,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:56:20,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:56:20,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:56:20,506 INFO L87 Difference]: Start difference. First operand 32992 states and 48540 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:22,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:56:22,135 INFO L93 Difference]: Finished difference Result 44360 states and 65430 transitions. [2022-12-13 10:56:22,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:56:22,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-12-13 10:56:22,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:56:22,146 INFO L225 Difference]: With dead ends: 44360 [2022-12-13 10:56:22,147 INFO L226 Difference]: Without dead ends: 11962 [2022-12-13 10:56:22,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:56:22,168 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 48 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:56:22,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 344 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:56:22,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11962 states. [2022-12-13 10:56:23,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11962 to 11960. [2022-12-13 10:56:23,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11960 states, 11959 states have (on average 1.468015720377958) internal successors, (17556), 11959 states have internal predecessors, (17556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:23,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11960 states to 11960 states and 17556 transitions. [2022-12-13 10:56:23,296 INFO L78 Accepts]: Start accepts. Automaton has 11960 states and 17556 transitions. Word has length 90 [2022-12-13 10:56:23,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:56:23,296 INFO L495 AbstractCegarLoop]: Abstraction has 11960 states and 17556 transitions. [2022-12-13 10:56:23,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:23,296 INFO L276 IsEmpty]: Start isEmpty. Operand 11960 states and 17556 transitions. [2022-12-13 10:56:23,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 10:56:23,297 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:56:23,298 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:56:23,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 10:56:23,298 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:56:23,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:23,298 INFO L85 PathProgramCache]: Analyzing trace with hash -113401182, now seen corresponding path program 1 times [2022-12-13 10:56:23,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:23,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070399799] [2022-12-13 10:56:23,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:23,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 10:56:23,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:56:23,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070399799] [2022-12-13 10:56:23,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070399799] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:56:23,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:56:23,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:56:23,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835412097] [2022-12-13 10:56:23,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:56:23,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 10:56:23,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:56:23,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 10:56:23,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 10:56:23,420 INFO L87 Difference]: Start difference. First operand 11960 states and 17556 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:25,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:56:25,956 INFO L93 Difference]: Finished difference Result 35215 states and 51599 transitions. [2022-12-13 10:56:25,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:56:25,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-12-13 10:56:25,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:56:25,980 INFO L225 Difference]: With dead ends: 35215 [2022-12-13 10:56:25,981 INFO L226 Difference]: Without dead ends: 23264 [2022-12-13 10:56:25,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:56:25,993 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 403 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:56:25,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 482 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:56:26,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23264 states. [2022-12-13 10:56:28,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23264 to 23262. [2022-12-13 10:56:28,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23262 states, 23261 states have (on average 1.4524740982760844) internal successors, (33786), 23261 states have internal predecessors, (33786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:28,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23262 states to 23262 states and 33786 transitions. [2022-12-13 10:56:28,518 INFO L78 Accepts]: Start accepts. Automaton has 23262 states and 33786 transitions. Word has length 92 [2022-12-13 10:56:28,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:56:28,518 INFO L495 AbstractCegarLoop]: Abstraction has 23262 states and 33786 transitions. [2022-12-13 10:56:28,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:28,518 INFO L276 IsEmpty]: Start isEmpty. Operand 23262 states and 33786 transitions. [2022-12-13 10:56:28,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 10:56:28,520 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:56:28,520 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:56:28,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 10:56:28,520 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:56:28,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:28,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2098260854, now seen corresponding path program 1 times [2022-12-13 10:56:28,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:28,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127944268] [2022-12-13 10:56:28,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:28,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:28,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 10:56:28,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:56:28,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127944268] [2022-12-13 10:56:28,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127944268] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:56:28,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:56:28,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:56:28,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086950884] [2022-12-13 10:56:28,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:56:28,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:56:28,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:56:28,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:56:28,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:56:28,547 INFO L87 Difference]: Start difference. First operand 23262 states and 33786 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:33,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:56:33,838 INFO L93 Difference]: Finished difference Result 69728 states and 101264 transitions. [2022-12-13 10:56:33,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:56:33,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-12-13 10:56:33,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:56:33,892 INFO L225 Difference]: With dead ends: 69728 [2022-12-13 10:56:33,892 INFO L226 Difference]: Without dead ends: 46514 [2022-12-13 10:56:33,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:56:33,909 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 187 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:56:33,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 571 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:56:33,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46514 states. [2022-12-13 10:56:37,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46514 to 23264. [2022-12-13 10:56:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23264 states, 23263 states have (on average 1.452435197523965) internal successors, (33788), 23263 states have internal predecessors, (33788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:37,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23264 states to 23264 states and 33788 transitions. [2022-12-13 10:56:37,036 INFO L78 Accepts]: Start accepts. Automaton has 23264 states and 33788 transitions. Word has length 93 [2022-12-13 10:56:37,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:56:37,036 INFO L495 AbstractCegarLoop]: Abstraction has 23264 states and 33788 transitions. [2022-12-13 10:56:37,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:37,037 INFO L276 IsEmpty]: Start isEmpty. Operand 23264 states and 33788 transitions. [2022-12-13 10:56:37,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 10:56:37,038 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:56:37,038 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:56:37,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 10:56:37,039 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:56:37,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:37,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1221522, now seen corresponding path program 1 times [2022-12-13 10:56:37,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:37,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983327679] [2022-12-13 10:56:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:37,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:37,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 10:56:37,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:56:37,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983327679] [2022-12-13 10:56:37,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983327679] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:56:37,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:56:37,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:56:37,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198329263] [2022-12-13 10:56:37,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:56:37,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:56:37,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:56:37,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:56:37,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:56:37,074 INFO L87 Difference]: Start difference. First operand 23264 states and 33788 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:44,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:56:44,043 INFO L93 Difference]: Finished difference Result 67956 states and 98571 transitions. [2022-12-13 10:56:44,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:56:44,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-12-13 10:56:44,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:56:44,094 INFO L225 Difference]: With dead ends: 67956 [2022-12-13 10:56:44,094 INFO L226 Difference]: Without dead ends: 45218 [2022-12-13 10:56:44,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:56:44,114 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 141 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:56:44,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 517 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:56:44,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45218 states. [2022-12-13 10:56:51,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45218 to 45216. [2022-12-13 10:56:51,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45216 states, 45215 states have (on average 1.4362711489549929) internal successors, (64941), 45215 states have internal predecessors, (64941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:51,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45216 states to 45216 states and 64941 transitions. [2022-12-13 10:56:51,946 INFO L78 Accepts]: Start accepts. Automaton has 45216 states and 64941 transitions. Word has length 94 [2022-12-13 10:56:51,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:56:51,946 INFO L495 AbstractCegarLoop]: Abstraction has 45216 states and 64941 transitions. [2022-12-13 10:56:51,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:51,947 INFO L276 IsEmpty]: Start isEmpty. Operand 45216 states and 64941 transitions. [2022-12-13 10:56:51,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 10:56:51,950 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:56:51,950 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:56:51,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 10:56:51,951 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:56:51,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:51,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1478150929, now seen corresponding path program 1 times [2022-12-13 10:56:51,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:51,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36449822] [2022-12-13 10:56:51,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:51,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 10:56:52,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:56:52,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36449822] [2022-12-13 10:56:52,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36449822] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:56:52,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:56:52,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:56:52,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977367046] [2022-12-13 10:56:52,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:56:52,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:56:52,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:56:52,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:56:52,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:56:52,055 INFO L87 Difference]: Start difference. First operand 45216 states and 64941 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:04,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:04,998 INFO L93 Difference]: Finished difference Result 132586 states and 190082 transitions. [2022-12-13 10:57:04,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:57:04,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-12-13 10:57:04,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:05,112 INFO L225 Difference]: With dead ends: 132586 [2022-12-13 10:57:05,112 INFO L226 Difference]: Without dead ends: 87384 [2022-12-13 10:57:05,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:57:05,145 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 360 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:05,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 651 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:57:05,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87384 states. [2022-12-13 10:57:17,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87384 to 87382. [2022-12-13 10:57:17,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87382 states, 87381 states have (on average 1.4207207516508165) internal successors, (124144), 87381 states have internal predecessors, (124144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:18,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87382 states to 87382 states and 124144 transitions. [2022-12-13 10:57:18,040 INFO L78 Accepts]: Start accepts. Automaton has 87382 states and 124144 transitions. Word has length 94 [2022-12-13 10:57:18,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:18,040 INFO L495 AbstractCegarLoop]: Abstraction has 87382 states and 124144 transitions. [2022-12-13 10:57:18,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:18,040 INFO L276 IsEmpty]: Start isEmpty. Operand 87382 states and 124144 transitions. [2022-12-13 10:57:18,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 10:57:18,046 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:18,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:18,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 10:57:18,047 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:18,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:18,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1220343267, now seen corresponding path program 1 times [2022-12-13 10:57:18,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:18,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30388364] [2022-12-13 10:57:18,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:18,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:18,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 10:57:18,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:18,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30388364] [2022-12-13 10:57:18,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30388364] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:18,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:18,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:57:18,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949394430] [2022-12-13 10:57:18,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:18,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 10:57:18,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:18,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 10:57:18,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 10:57:18,128 INFO L87 Difference]: Start difference. First operand 87382 states and 124144 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:31,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:31,946 INFO L93 Difference]: Finished difference Result 174881 states and 248392 transitions. [2022-12-13 10:57:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:57:31,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-12-13 10:57:31,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:32,058 INFO L225 Difference]: With dead ends: 174881 [2022-12-13 10:57:32,058 INFO L226 Difference]: Without dead ends: 87907 [2022-12-13 10:57:32,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:57:32,109 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 390 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:32,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 461 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:57:32,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87907 states. [2022-12-13 10:57:46,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87907 to 87905. [2022-12-13 10:57:46,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87905 states, 87904 states have (on average 1.407763014197306) internal successors, (123748), 87904 states have internal predecessors, (123748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:46,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87905 states to 87905 states and 123748 transitions. [2022-12-13 10:57:46,164 INFO L78 Accepts]: Start accepts. Automaton has 87905 states and 123748 transitions. Word has length 94 [2022-12-13 10:57:46,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:46,164 INFO L495 AbstractCegarLoop]: Abstraction has 87905 states and 123748 transitions. [2022-12-13 10:57:46,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:46,164 INFO L276 IsEmpty]: Start isEmpty. Operand 87905 states and 123748 transitions. [2022-12-13 10:57:46,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 10:57:46,171 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:46,172 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:46,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 10:57:46,172 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:46,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:46,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1278263785, now seen corresponding path program 1 times [2022-12-13 10:57:46,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:46,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930176204] [2022-12-13 10:57:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:46,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:46,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 10:57:46,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:46,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930176204] [2022-12-13 10:57:46,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930176204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:46,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:46,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:57:46,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520366907] [2022-12-13 10:57:46,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:46,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:57:46,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:46,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:57:46,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:57:46,200 INFO L87 Difference]: Start difference. First operand 87905 states and 123748 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:14,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:58:14,565 INFO L93 Difference]: Finished difference Result 262629 states and 369868 transitions. [2022-12-13 10:58:14,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:58:14,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-12-13 10:58:14,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:58:14,823 INFO L225 Difference]: With dead ends: 262629 [2022-12-13 10:58:14,824 INFO L226 Difference]: Without dead ends: 175709 [2022-12-13 10:58:14,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:58:14,885 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 173 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:58:14,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 457 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:58:15,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175709 states. [2022-12-13 10:58:30,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175709 to 87915. [2022-12-13 10:58:31,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87915 states, 87914 states have (on average 1.4077166321632504) internal successors, (123758), 87914 states have internal predecessors, (123758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:31,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87915 states to 87915 states and 123758 transitions. [2022-12-13 10:58:31,144 INFO L78 Accepts]: Start accepts. Automaton has 87915 states and 123758 transitions. Word has length 95 [2022-12-13 10:58:31,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:58:31,145 INFO L495 AbstractCegarLoop]: Abstraction has 87915 states and 123758 transitions. [2022-12-13 10:58:31,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:31,145 INFO L276 IsEmpty]: Start isEmpty. Operand 87915 states and 123758 transitions. [2022-12-13 10:58:31,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-13 10:58:31,152 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:58:31,152 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:58:31,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 10:58:31,152 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:58:31,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:58:31,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1437344348, now seen corresponding path program 1 times [2022-12-13 10:58:31,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:58:31,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818068543] [2022-12-13 10:58:31,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:58:31,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:58:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:31,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 10:58:31,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:58:31,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818068543] [2022-12-13 10:58:31,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818068543] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:58:31,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:58:31,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:58:31,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012974117] [2022-12-13 10:58:31,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:58:31,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 10:58:31,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:58:31,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 10:58:31,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 10:58:31,233 INFO L87 Difference]: Start difference. First operand 87915 states and 123758 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:45,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:58:45,570 INFO L93 Difference]: Finished difference Result 162755 states and 228964 transitions. [2022-12-13 10:58:45,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:58:45,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-12-13 10:58:45,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:58:45,671 INFO L225 Difference]: With dead ends: 162755 [2022-12-13 10:58:45,671 INFO L226 Difference]: Without dead ends: 74508 [2022-12-13 10:58:45,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:58:45,720 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 382 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:58:45,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 452 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:58:45,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74508 states. [2022-12-13 10:58:59,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74508 to 74506. [2022-12-13 10:58:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74506 states, 74505 states have (on average 1.3932353533319912) internal successors, (103803), 74505 states have internal predecessors, (103803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:00,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74506 states to 74506 states and 103803 transitions. [2022-12-13 10:59:00,029 INFO L78 Accepts]: Start accepts. Automaton has 74506 states and 103803 transitions. Word has length 96 [2022-12-13 10:59:00,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:59:00,029 INFO L495 AbstractCegarLoop]: Abstraction has 74506 states and 103803 transitions. [2022-12-13 10:59:00,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:00,029 INFO L276 IsEmpty]: Start isEmpty. Operand 74506 states and 103803 transitions. [2022-12-13 10:59:00,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 10:59:00,037 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:59:00,037 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:59:00,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 10:59:00,038 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:59:00,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:59:00,038 INFO L85 PathProgramCache]: Analyzing trace with hash -537920200, now seen corresponding path program 1 times [2022-12-13 10:59:00,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:59:00,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085715148] [2022-12-13 10:59:00,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:59:00,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:59:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:59:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 10:59:00,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:59:00,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085715148] [2022-12-13 10:59:00,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085715148] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:59:00,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:59:00,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:59:00,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913153659] [2022-12-13 10:59:00,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:59:00,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:59:00,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:59:00,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:59:00,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:59:00,065 INFO L87 Difference]: Start difference. First operand 74506 states and 103803 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:28,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:59:28,272 INFO L93 Difference]: Finished difference Result 221054 states and 308415 transitions. [2022-12-13 10:59:28,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:59:28,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-12-13 10:59:28,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:59:28,486 INFO L225 Difference]: With dead ends: 221054 [2022-12-13 10:59:28,486 INFO L226 Difference]: Without dead ends: 148044 [2022-12-13 10:59:28,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:59:28,532 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 159 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:59:28,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 543 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:59:28,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148044 states. [2022-12-13 10:59:44,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148044 to 74526. [2022-12-13 10:59:44,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74526 states, 74525 states have (on average 1.3929956390472995) internal successors, (103813), 74525 states have internal predecessors, (103813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:44,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74526 states to 74526 states and 103813 transitions. [2022-12-13 10:59:44,254 INFO L78 Accepts]: Start accepts. Automaton has 74526 states and 103813 transitions. Word has length 97 [2022-12-13 10:59:44,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:59:44,254 INFO L495 AbstractCegarLoop]: Abstraction has 74526 states and 103813 transitions. [2022-12-13 10:59:44,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:44,254 INFO L276 IsEmpty]: Start isEmpty. Operand 74526 states and 103813 transitions. [2022-12-13 10:59:44,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 10:59:44,262 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:59:44,262 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:59:44,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 10:59:44,263 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:59:44,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:59:44,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1995612985, now seen corresponding path program 1 times [2022-12-13 10:59:44,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:59:44,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61939012] [2022-12-13 10:59:44,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:59:44,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:59:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:59:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 10:59:44,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:59:44,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61939012] [2022-12-13 10:59:44,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61939012] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:59:44,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:59:44,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:59:44,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137654153] [2022-12-13 10:59:44,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:59:44,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:59:44,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:59:44,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:59:44,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:59:44,357 INFO L87 Difference]: Start difference. First operand 74526 states and 103813 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:00:00,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:00:00,250 INFO L93 Difference]: Finished difference Result 148790 states and 207321 transitions. [2022-12-13 11:00:00,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:00:00,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-12-13 11:00:00,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:00:00,350 INFO L225 Difference]: With dead ends: 148790 [2022-12-13 11:00:00,351 INFO L226 Difference]: Without dead ends: 75007 [2022-12-13 11:00:00,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:00:00,394 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 339 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:00:00,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 631 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:00:00,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75007 states. [2022-12-13 11:00:16,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75007 to 74549. [2022-12-13 11:00:16,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74549 states, 74548 states have (on average 1.3927536620700756) internal successors, (103827), 74548 states have internal predecessors, (103827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:00:16,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74549 states to 74549 states and 103827 transitions. [2022-12-13 11:00:16,436 INFO L78 Accepts]: Start accepts. Automaton has 74549 states and 103827 transitions. Word has length 98 [2022-12-13 11:00:16,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:00:16,436 INFO L495 AbstractCegarLoop]: Abstraction has 74549 states and 103827 transitions. [2022-12-13 11:00:16,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:00:16,437 INFO L276 IsEmpty]: Start isEmpty. Operand 74549 states and 103827 transitions. [2022-12-13 11:00:16,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 11:00:16,445 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:00:16,445 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:00:16,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 11:00:16,445 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:00:16,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:00:16,446 INFO L85 PathProgramCache]: Analyzing trace with hash -2129290779, now seen corresponding path program 1 times [2022-12-13 11:00:16,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:00:16,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640762579] [2022-12-13 11:00:16,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:00:16,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:00:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:16,511 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:00:16,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:00:16,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640762579] [2022-12-13 11:00:16,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640762579] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:00:16,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:00:16,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:00:16,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943560860] [2022-12-13 11:00:16,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:00:16,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:00:16,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:00:16,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:00:16,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:00:16,512 INFO L87 Difference]: Start difference. First operand 74549 states and 103827 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:00:38,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:00:38,606 INFO L93 Difference]: Finished difference Result 170729 states and 237525 transitions. [2022-12-13 11:00:38,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:00:38,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-12-13 11:00:38,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:00:38,751 INFO L225 Difference]: With dead ends: 170729 [2022-12-13 11:00:38,751 INFO L226 Difference]: Without dead ends: 100543 [2022-12-13 11:00:38,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:00:38,791 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 174 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:00:38,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 642 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:00:38,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100543 states. [2022-12-13 11:01:00,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100543 to 99933. [2022-12-13 11:01:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99933 states, 99932 states have (on average 1.3747248128727534) internal successors, (137379), 99932 states have internal predecessors, (137379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:01:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99933 states to 99933 states and 137379 transitions. [2022-12-13 11:01:00,843 INFO L78 Accepts]: Start accepts. Automaton has 99933 states and 137379 transitions. Word has length 98 [2022-12-13 11:01:00,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:01:00,843 INFO L495 AbstractCegarLoop]: Abstraction has 99933 states and 137379 transitions. [2022-12-13 11:01:00,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:01:00,844 INFO L276 IsEmpty]: Start isEmpty. Operand 99933 states and 137379 transitions. [2022-12-13 11:01:00,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 11:01:00,850 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:01:00,850 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:01:00,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 11:01:00,851 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:01:00,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:01:00,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1847154839, now seen corresponding path program 1 times [2022-12-13 11:01:00,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:01:00,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800255157] [2022-12-13 11:01:00,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:01:00,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:01:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:01:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:01:00,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:01:00,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800255157] [2022-12-13 11:01:00,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800255157] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:01:00,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:01:00,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:01:00,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894318026] [2022-12-13 11:01:00,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:01:00,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:01:00,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:01:00,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:01:00,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:01:00,916 INFO L87 Difference]: Start difference. First operand 99933 states and 137379 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:01:18,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:01:18,903 INFO L93 Difference]: Finished difference Result 176191 states and 243788 transitions. [2022-12-13 11:01:18,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:01:18,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-12-13 11:01:18,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:01:19,008 INFO L225 Difference]: With dead ends: 176191 [2022-12-13 11:01:19,008 INFO L226 Difference]: Without dead ends: 81713 [2022-12-13 11:01:19,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:01:19,052 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 152 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:01:19,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 603 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:01:19,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81713 states. [2022-12-13 11:01:36,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81713 to 81713. [2022-12-13 11:01:36,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81713 states, 81712 states have (on average 1.374963285686313) internal successors, (112351), 81712 states have internal predecessors, (112351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:01:36,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81713 states to 81713 states and 112351 transitions. [2022-12-13 11:01:36,881 INFO L78 Accepts]: Start accepts. Automaton has 81713 states and 112351 transitions. Word has length 98 [2022-12-13 11:01:36,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:01:36,882 INFO L495 AbstractCegarLoop]: Abstraction has 81713 states and 112351 transitions. [2022-12-13 11:01:36,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:01:36,882 INFO L276 IsEmpty]: Start isEmpty. Operand 81713 states and 112351 transitions. [2022-12-13 11:01:36,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-13 11:01:36,896 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:01:36,897 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:01:36,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 11:01:36,897 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:01:36,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:01:36,897 INFO L85 PathProgramCache]: Analyzing trace with hash 828784937, now seen corresponding path program 1 times [2022-12-13 11:01:36,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:01:36,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053240430] [2022-12-13 11:01:36,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:01:36,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:01:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:01:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 11:01:36,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:01:36,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053240430] [2022-12-13 11:01:36,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053240430] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:01:36,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:01:36,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:01:36,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853573780] [2022-12-13 11:01:36,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:01:36,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:01:36,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:01:36,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:01:36,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:01:36,971 INFO L87 Difference]: Start difference. First operand 81713 states and 112351 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:01:58,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:01:58,538 INFO L93 Difference]: Finished difference Result 133883 states and 186314 transitions. [2022-12-13 11:01:58,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:01:58,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2022-12-13 11:01:58,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:01:58,668 INFO L225 Difference]: With dead ends: 133883 [2022-12-13 11:01:58,668 INFO L226 Difference]: Without dead ends: 98113 [2022-12-13 11:01:58,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:01:58,703 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 484 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:01:58,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 667 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:01:58,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98113 states. [2022-12-13 11:02:21,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98113 to 97965. [2022-12-13 11:02:21,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97965 states, 97964 states have (on average 1.3913988812216733) internal successors, (136307), 97964 states have internal predecessors, (136307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:02:21,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97965 states to 97965 states and 136307 transitions. [2022-12-13 11:02:21,869 INFO L78 Accepts]: Start accepts. Automaton has 97965 states and 136307 transitions. Word has length 158 [2022-12-13 11:02:21,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:02:21,869 INFO L495 AbstractCegarLoop]: Abstraction has 97965 states and 136307 transitions. [2022-12-13 11:02:21,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:02:21,869 INFO L276 IsEmpty]: Start isEmpty. Operand 97965 states and 136307 transitions. [2022-12-13 11:02:21,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-13 11:02:21,881 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:02:21,881 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:02:21,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 11:02:21,881 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:02:21,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:02:21,882 INFO L85 PathProgramCache]: Analyzing trace with hash 2082642897, now seen corresponding path program 2 times [2022-12-13 11:02:21,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:02:21,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306942161] [2022-12-13 11:02:21,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:02:21,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:02:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:02:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-13 11:02:21,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:02:21,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306942161] [2022-12-13 11:02:21,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306942161] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:02:21,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:02:21,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:02:21,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344009050] [2022-12-13 11:02:21,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:02:21,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:02:21,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:02:21,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:02:21,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:02:21,989 INFO L87 Difference]: Start difference. First operand 97965 states and 136307 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:03:05,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:03:05,709 INFO L93 Difference]: Finished difference Result 270441 states and 378201 transitions. [2022-12-13 11:03:05,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:03:05,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2022-12-13 11:03:05,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:03:05,982 INFO L225 Difference]: With dead ends: 270441 [2022-12-13 11:03:05,982 INFO L226 Difference]: Without dead ends: 180827 [2022-12-13 11:03:06,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:03:06,070 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 108 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:03:06,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 782 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:03:06,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180827 states. [2022-12-13 11:03:41,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180827 to 143121. [2022-12-13 11:03:41,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143121 states, 143120 states have (on average 1.3841741196198993) internal successors, (198103), 143120 states have internal predecessors, (198103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:03:41,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143121 states to 143121 states and 198103 transitions. [2022-12-13 11:03:41,741 INFO L78 Accepts]: Start accepts. Automaton has 143121 states and 198103 transitions. Word has length 158 [2022-12-13 11:03:41,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:03:41,741 INFO L495 AbstractCegarLoop]: Abstraction has 143121 states and 198103 transitions. [2022-12-13 11:03:41,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:03:41,741 INFO L276 IsEmpty]: Start isEmpty. Operand 143121 states and 198103 transitions. [2022-12-13 11:03:41,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-13 11:03:41,755 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:03:41,755 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:03:41,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 11:03:41,755 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:03:41,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:03:41,755 INFO L85 PathProgramCache]: Analyzing trace with hash -639961759, now seen corresponding path program 1 times [2022-12-13 11:03:41,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:03:41,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142672364] [2022-12-13 11:03:41,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:03:41,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:03:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 11:03:41,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:03:41,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142672364] [2022-12-13 11:03:41,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142672364] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:03:41,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072671605] [2022-12-13 11:03:41,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:03:41,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:03:41,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:03:41,865 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:03:41,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:03:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:41,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 11:03:41,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:03:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 11:03:42,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:03:43,187 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 84 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 11:03:43,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072671605] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:03:43,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:03:43,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-12-13 11:03:43,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215404904] [2022-12-13 11:03:43,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:03:43,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:03:43,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:03:43,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:03:43,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:03:43,188 INFO L87 Difference]: Start difference. First operand 143121 states and 198103 transitions. Second operand has 14 states, 14 states have (on average 23.857142857142858) internal successors, (334), 14 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:05:18,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:05:18,733 INFO L93 Difference]: Finished difference Result 481837 states and 668463 transitions. [2022-12-13 11:05:18,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 11:05:18,734 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 23.857142857142858) internal successors, (334), 14 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2022-12-13 11:05:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:05:19,336 INFO L225 Difference]: With dead ends: 481837 [2022-12-13 11:05:19,336 INFO L226 Difference]: Without dead ends: 310875 [2022-12-13 11:05:19,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 307 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2022-12-13 11:05:19,483 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 989 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:05:19,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 1542 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:05:19,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310875 states. [2022-12-13 11:06:31,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310875 to 252177. [2022-12-13 11:06:31,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252177 states, 252176 states have (on average 1.3914052090603388) internal successors, (350879), 252176 states have internal predecessors, (350879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:06:32,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252177 states to 252177 states and 350879 transitions. [2022-12-13 11:06:32,517 INFO L78 Accepts]: Start accepts. Automaton has 252177 states and 350879 transitions. Word has length 158 [2022-12-13 11:06:32,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:06:32,517 INFO L495 AbstractCegarLoop]: Abstraction has 252177 states and 350879 transitions. [2022-12-13 11:06:32,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.857142857142858) internal successors, (334), 14 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:06:32,517 INFO L276 IsEmpty]: Start isEmpty. Operand 252177 states and 350879 transitions. [2022-12-13 11:06:32,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-13 11:06:32,530 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:06:32,530 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:06:32,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:06:32,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 11:06:32,732 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:06:32,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:06:32,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1740933454, now seen corresponding path program 1 times [2022-12-13 11:06:32,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:06:32,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525496154] [2022-12-13 11:06:32,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:06:32,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:06:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:06:32,921 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 51 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 11:06:32,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:06:32,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525496154] [2022-12-13 11:06:32,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525496154] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:06:32,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86373341] [2022-12-13 11:06:32,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:06:32,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:06:32,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:06:32,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:06:32,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1200681-3b95-432a-9e05-b254bc0d4f1c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:06:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:06:33,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 11:06:33,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:06:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 52 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 11:06:33,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:06:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 23 proven. 60 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 11:06:34,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86373341] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:06:34,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:06:34,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 9] total 15 [2022-12-13 11:06:34,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885519486] [2022-12-13 11:06:34,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:06:34,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 11:06:34,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:06:34,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 11:06:34,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-12-13 11:06:34,171 INFO L87 Difference]: Start difference. First operand 252177 states and 350879 transitions. Second operand has 15 states, 15 states have (on average 23.333333333333332) internal successors, (350), 15 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)