./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.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_b954d6f5-888c-428c-b7cd-534d17c17c7a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b954d6f5-888c-428c-b7cd-534d17c17c7a/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_b954d6f5-888c-428c-b7cd-534d17c17c7a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b954d6f5-888c-428c-b7cd-534d17c17c7a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b954d6f5-888c-428c-b7cd-534d17c17c7a/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_b954d6f5-888c-428c-b7cd-534d17c17c7a/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 c7d273a09ef49b5374355f70a7c3526050d90f635e0e9c0c426afbe9f20d712a --- 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 12:49:30,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:49:30,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:49:30,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:49:30,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:49:30,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:49:30,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:49:30,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:49:30,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:49:30,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:49:30,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:49:30,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:49:30,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:49:30,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:49:30,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:49:30,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:49:30,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:49:30,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:49:30,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:49:30,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:49:30,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:49:30,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:49:30,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:49:30,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:49:30,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:49:30,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:49:30,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:49:30,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:49:30,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:49:30,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:49:30,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:49:30,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:49:30,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:49:30,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:49:30,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:49:30,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:49:30,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:49:30,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:49:30,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:49:30,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:49:30,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:49:30,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b954d6f5-888c-428c-b7cd-534d17c17c7a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 12:49:30,676 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:49:30,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:49:30,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:49:30,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:49:30,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:49:30,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:49:30,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:49:30,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:49:30,678 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:49:30,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:49:30,679 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:49:30,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:49:30,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:49:30,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:49:30,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:49:30,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:49:30,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:49:30,680 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:49:30,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:49:30,680 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:49:30,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:49:30,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:49:30,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:49:30,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:49:30,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:49:30,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:49:30,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:49:30,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:49:30,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:49:30,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:49:30,682 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:49:30,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:49:30,683 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:49:30,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:49:30,683 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:49:30,683 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_b954d6f5-888c-428c-b7cd-534d17c17c7a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b954d6f5-888c-428c-b7cd-534d17c17c7a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7d273a09ef49b5374355f70a7c3526050d90f635e0e9c0c426afbe9f20d712a [2022-12-13 12:49:30,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:49:30,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:49:30,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:49:30,897 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:49:30,897 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:49:30,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b954d6f5-888c-428c-b7cd-534d17c17c7a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-12-13 12:49:33,436 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:49:33,623 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:49:33,624 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b954d6f5-888c-428c-b7cd-534d17c17c7a/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-12-13 12:49:33,632 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b954d6f5-888c-428c-b7cd-534d17c17c7a/bin/uautomizer-uyxdKDjOR8/data/4b8d42a55/f2b800ee83324e14bb0ea1c59d66f2c0/FLAGcf241120c [2022-12-13 12:49:33,644 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b954d6f5-888c-428c-b7cd-534d17c17c7a/bin/uautomizer-uyxdKDjOR8/data/4b8d42a55/f2b800ee83324e14bb0ea1c59d66f2c0 [2022-12-13 12:49:33,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:49:33,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:49:33,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:49:33,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:49:33,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:49:33,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:49:33" (1/1) ... [2022-12-13 12:49:33,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a4b2599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:49:33, skipping insertion in model container [2022-12-13 12:49:33,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:49:33" (1/1) ... [2022-12-13 12:49:33,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:49:33,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:49:33,911 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_b954d6f5-888c-428c-b7cd-534d17c17c7a/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13826,13839] [2022-12-13 12:49:33,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:49:33,971 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:49:34,025 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_b954d6f5-888c-428c-b7cd-534d17c17c7a/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13826,13839] [2022-12-13 12:49:34,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:49:34,068 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:49:34,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:49:34 WrapperNode [2022-12-13 12:49:34,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:49:34,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:49:34,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:49:34,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:49:34,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:49:34" (1/1) ... [2022-12-13 12:49:34,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:49:34" (1/1) ... [2022-12-13 12:49:34,124 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1369 [2022-12-13 12:49:34,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:49:34,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:49:34,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:49:34,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:49:34,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:49:34" (1/1) ... [2022-12-13 12:49:34,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:49:34" (1/1) ... [2022-12-13 12:49:34,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:49:34" (1/1) ... [2022-12-13 12:49:34,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:49:34" (1/1) ... [2022-12-13 12:49:34,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:49:34" (1/1) ... [2022-12-13 12:49:34,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:49:34" (1/1) ... [2022-12-13 12:49:34,159 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:49:34" (1/1) ... [2022-12-13 12:49:34,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:49:34" (1/1) ... [2022-12-13 12:49:34,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:49:34,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:49:34,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:49:34,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:49:34,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:49:34" (1/1) ... [2022-12-13 12:49:34,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:49:34,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b954d6f5-888c-428c-b7cd-534d17c17c7a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:49:34,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b954d6f5-888c-428c-b7cd-534d17c17c7a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:49:34,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b954d6f5-888c-428c-b7cd-534d17c17c7a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:49:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:49:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:49:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:49:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:49:34,333 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:49:34,335 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:49:35,023 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:49:35,032 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:49:35,033 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 12:49:35,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:49:35 BoogieIcfgContainer [2022-12-13 12:49:35,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:49:35,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:49:35,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:49:35,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:49:35,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:49:33" (1/3) ... [2022-12-13 12:49:35,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53695fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:49:35, skipping insertion in model container [2022-12-13 12:49:35,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:49:34" (2/3) ... [2022-12-13 12:49:35,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53695fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:49:35, skipping insertion in model container [2022-12-13 12:49:35,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:49:35" (3/3) ... [2022-12-13 12:49:35,043 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-12-13 12:49:35,058 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:49:35,058 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 12:49:35,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:49:35,102 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;@3965f269, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:49:35,102 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 12:49:35,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 357 states, 348 states have (on average 1.7873563218390804) internal successors, (622), 356 states have internal predecessors, (622), 0 states have call successors, (0), 0 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 12:49:35,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-13 12:49:35,116 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:49:35,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:49:35,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:49:35,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:49:35,120 INFO L85 PathProgramCache]: Analyzing trace with hash 687624892, now seen corresponding path program 1 times [2022-12-13 12:49:35,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:49:35,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179343705] [2022-12-13 12:49:35,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:49:35,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:49:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:49:35,486 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 12:49:35,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:49:35,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179343705] [2022-12-13 12:49:35,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179343705] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:49:35,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:49:35,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:49:35,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286602013] [2022-12-13 12:49:35,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:49:35,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:49:35,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:49:35,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:49:35,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:49:35,516 INFO L87 Difference]: Start difference. First operand has 357 states, 348 states have (on average 1.7873563218390804) internal successors, (622), 356 states have internal predecessors, (622), 0 states have call successors, (0), 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 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 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 12:49:35,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:49:35,623 INFO L93 Difference]: Finished difference Result 671 states and 1124 transitions. [2022-12-13 12:49:35,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:49:35,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-12-13 12:49:35,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:49:35,637 INFO L225 Difference]: With dead ends: 671 [2022-12-13 12:49:35,637 INFO L226 Difference]: Without dead ends: 488 [2022-12-13 12:49:35,640 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 12:49:35,642 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 266 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1146 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 12:49:35,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1146 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:49:35,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-12-13 12:49:35,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 485. [2022-12-13 12:49:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.6260330578512396) internal successors, (787), 484 states have internal predecessors, (787), 0 states have call successors, (0), 0 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 12:49:35,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 787 transitions. [2022-12-13 12:49:35,705 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 787 transitions. Word has length 118 [2022-12-13 12:49:35,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:49:35,706 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 787 transitions. [2022-12-13 12:49:35,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 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 12:49:35,706 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 787 transitions. [2022-12-13 12:49:35,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-13 12:49:35,709 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:49:35,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:49:35,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:49:35,710 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:49:35,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:49:35,710 INFO L85 PathProgramCache]: Analyzing trace with hash 787881554, now seen corresponding path program 1 times [2022-12-13 12:49:35,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:49:35,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920707823] [2022-12-13 12:49:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:49:35,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:49:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:49:35,842 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 12:49:35,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:49:35,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920707823] [2022-12-13 12:49:35,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920707823] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:49:35,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:49:35,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:49:35,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624718010] [2022-12-13 12:49:35,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:49:35,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:49:35,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:49:35,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:49:35,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:49:35,845 INFO L87 Difference]: Start difference. First operand 485 states and 787 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 12:49:35,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:49:35,903 INFO L93 Difference]: Finished difference Result 1049 states and 1699 transitions. [2022-12-13 12:49:35,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:49:35,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-12-13 12:49:35,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:49:35,910 INFO L225 Difference]: With dead ends: 1049 [2022-12-13 12:49:35,910 INFO L226 Difference]: Without dead ends: 757 [2022-12-13 12:49:35,912 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 12:49:35,913 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 220 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1078 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 12:49:35,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1078 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:49:35,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-12-13 12:49:35,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 753. [2022-12-13 12:49:35,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 752 states have (on average 1.6196808510638299) internal successors, (1218), 752 states have internal predecessors, (1218), 0 states have call successors, (0), 0 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 12:49:35,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1218 transitions. [2022-12-13 12:49:35,951 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1218 transitions. Word has length 121 [2022-12-13 12:49:35,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:49:35,951 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1218 transitions. [2022-12-13 12:49:35,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 12:49:35,952 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1218 transitions. [2022-12-13 12:49:35,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-12-13 12:49:35,954 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:49:35,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:49:35,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:49:35,955 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:49:35,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:49:35,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1106896185, now seen corresponding path program 1 times [2022-12-13 12:49:35,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:49:35,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463344996] [2022-12-13 12:49:35,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:49:35,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:49:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:49:36,106 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 12:49:36,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:49:36,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463344996] [2022-12-13 12:49:36,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463344996] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:49:36,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:49:36,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:49:36,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681102665] [2022-12-13 12:49:36,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:49:36,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:49:36,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:49:36,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:49:36,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:49:36,109 INFO L87 Difference]: Start difference. First operand 753 states and 1218 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 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 12:49:36,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:49:36,216 INFO L93 Difference]: Finished difference Result 1833 states and 2956 transitions. [2022-12-13 12:49:36,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:49:36,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-12-13 12:49:36,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:49:36,221 INFO L225 Difference]: With dead ends: 1833 [2022-12-13 12:49:36,222 INFO L226 Difference]: Without dead ends: 1273 [2022-12-13 12:49:36,223 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 12:49:36,224 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 213 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1079 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 12:49:36,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1079 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:49:36,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2022-12-13 12:49:36,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1267. [2022-12-13 12:49:36,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1267 states, 1266 states have (on average 1.6097946287519747) internal successors, (2038), 1266 states have internal predecessors, (2038), 0 states have call successors, (0), 0 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 12:49:36,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1267 states to 1267 states and 2038 transitions. [2022-12-13 12:49:36,298 INFO L78 Accepts]: Start accepts. Automaton has 1267 states and 2038 transitions. Word has length 124 [2022-12-13 12:49:36,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:49:36,299 INFO L495 AbstractCegarLoop]: Abstraction has 1267 states and 2038 transitions. [2022-12-13 12:49:36,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 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 12:49:36,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1267 states and 2038 transitions. [2022-12-13 12:49:36,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-13 12:49:36,300 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:49:36,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:49:36,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:49:36,301 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:49:36,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:49:36,302 INFO L85 PathProgramCache]: Analyzing trace with hash -854228413, now seen corresponding path program 1 times [2022-12-13 12:49:36,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:49:36,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071481459] [2022-12-13 12:49:36,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:49:36,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:49:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:49:36,435 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 12:49:36,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:49:36,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071481459] [2022-12-13 12:49:36,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071481459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:49:36,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:49:36,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:49:36,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972458705] [2022-12-13 12:49:36,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:49:36,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:49:36,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:49:36,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:49:36,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:49:36,438 INFO L87 Difference]: Start difference. First operand 1267 states and 2038 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 12:49:36,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:49:36,591 INFO L93 Difference]: Finished difference Result 3335 states and 5344 transitions. [2022-12-13 12:49:36,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:49:36,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-12-13 12:49:36,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:49:36,600 INFO L225 Difference]: With dead ends: 3335 [2022-12-13 12:49:36,600 INFO L226 Difference]: Without dead ends: 2261 [2022-12-13 12:49:36,602 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 12:49:36,603 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 206 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1080 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 12:49:36,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 1080 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:49:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2022-12-13 12:49:36,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2251. [2022-12-13 12:49:36,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2250 states have (on average 1.5973333333333333) internal successors, (3594), 2250 states have internal predecessors, (3594), 0 states have call successors, (0), 0 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 12:49:36,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3594 transitions. [2022-12-13 12:49:36,719 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3594 transitions. Word has length 127 [2022-12-13 12:49:36,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:49:36,719 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3594 transitions. [2022-12-13 12:49:36,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 12:49:36,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3594 transitions. [2022-12-13 12:49:36,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-12-13 12:49:36,721 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:49:36,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:49:36,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:49:36,721 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:49:36,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:49:36,721 INFO L85 PathProgramCache]: Analyzing trace with hash 996831134, now seen corresponding path program 1 times [2022-12-13 12:49:36,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:49:36,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142038503] [2022-12-13 12:49:36,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:49:36,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:49:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:49:36,876 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 12:49:36,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:49:36,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142038503] [2022-12-13 12:49:36,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142038503] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:49:36,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:49:36,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:49:36,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968257912] [2022-12-13 12:49:36,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:49:36,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:49:36,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:49:36,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:49:36,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:49:36,879 INFO L87 Difference]: Start difference. First operand 2251 states and 3594 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:37,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:49:37,533 INFO L93 Difference]: Finished difference Result 11787 states and 18934 transitions. [2022-12-13 12:49:37,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:49:37,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-12-13 12:49:37,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:49:37,558 INFO L225 Difference]: With dead ends: 11787 [2022-12-13 12:49:37,558 INFO L226 Difference]: Without dead ends: 9705 [2022-12-13 12:49:37,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:49:37,562 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 2066 mSDsluCounter, 4212 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2066 SdHoareTripleChecker+Valid, 4779 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:49:37,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2066 Valid, 4779 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:49:37,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9705 states. [2022-12-13 12:49:37,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9705 to 4122. [2022-12-13 12:49:37,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4122 states, 4121 states have (on average 1.6039796165979132) internal successors, (6610), 4121 states have internal predecessors, (6610), 0 states have call successors, (0), 0 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 12:49:37,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 6610 transitions. [2022-12-13 12:49:37,875 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 6610 transitions. Word has length 130 [2022-12-13 12:49:37,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:49:37,876 INFO L495 AbstractCegarLoop]: Abstraction has 4122 states and 6610 transitions. [2022-12-13 12:49:37,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:37,876 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 6610 transitions. [2022-12-13 12:49:37,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-13 12:49:37,878 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:49:37,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:49:37,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:49:37,878 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:49:37,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:49:37,879 INFO L85 PathProgramCache]: Analyzing trace with hash 769932088, now seen corresponding path program 1 times [2022-12-13 12:49:37,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:49:37,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922408223] [2022-12-13 12:49:37,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:49:37,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:49:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:49:38,010 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 12:49:38,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:49:38,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922408223] [2022-12-13 12:49:38,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922408223] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:49:38,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:49:38,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:49:38,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047095236] [2022-12-13 12:49:38,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:49:38,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:49:38,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:49:38,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:49:38,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:49:38,012 INFO L87 Difference]: Start difference. First operand 4122 states and 6610 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 12:49:38,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:49:38,523 INFO L93 Difference]: Finished difference Result 12093 states and 19435 transitions. [2022-12-13 12:49:38,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:49:38,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-12-13 12:49:38,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:49:38,542 INFO L225 Difference]: With dead ends: 12093 [2022-12-13 12:49:38,542 INFO L226 Difference]: Without dead ends: 8164 [2022-12-13 12:49:38,546 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 12:49:38,547 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 725 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1702 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 12:49:38,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 1702 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:49:38,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8164 states. [2022-12-13 12:49:38,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8164 to 6119. [2022-12-13 12:49:38,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6119 states, 6118 states have (on average 1.6028113762667537) internal successors, (9806), 6118 states have internal predecessors, (9806), 0 states have call successors, (0), 0 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 12:49:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6119 states to 6119 states and 9806 transitions. [2022-12-13 12:49:38,968 INFO L78 Accepts]: Start accepts. Automaton has 6119 states and 9806 transitions. Word has length 131 [2022-12-13 12:49:38,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:49:38,968 INFO L495 AbstractCegarLoop]: Abstraction has 6119 states and 9806 transitions. [2022-12-13 12:49:38,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 12:49:38,969 INFO L276 IsEmpty]: Start isEmpty. Operand 6119 states and 9806 transitions. [2022-12-13 12:49:38,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 12:49:38,971 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:49:38,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:49:38,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:49:38,971 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:49:38,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:49:38,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2032293143, now seen corresponding path program 1 times [2022-12-13 12:49:38,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:49:38,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330987754] [2022-12-13 12:49:38,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:49:38,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:49:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:49:39,036 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 12:49:39,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:49:39,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330987754] [2022-12-13 12:49:39,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330987754] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:49:39,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:49:39,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:49:39,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736448961] [2022-12-13 12:49:39,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:49:39,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:49:39,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:49:39,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:49:39,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:49:39,037 INFO L87 Difference]: Start difference. First operand 6119 states and 9806 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:39,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:49:39,504 INFO L93 Difference]: Finished difference Result 11803 states and 18913 transitions. [2022-12-13 12:49:39,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:49:39,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-13 12:49:39,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:49:39,526 INFO L225 Difference]: With dead ends: 11803 [2022-12-13 12:49:39,526 INFO L226 Difference]: Without dead ends: 8597 [2022-12-13 12:49:39,530 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 12:49:39,531 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 219 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1217 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 12:49:39,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1217 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:49:39,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8597 states. [2022-12-13 12:49:40,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8597 to 8595. [2022-12-13 12:49:40,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8595 states, 8594 states have (on average 1.5958808471026298) internal successors, (13715), 8594 states have internal predecessors, (13715), 0 states have call successors, (0), 0 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 12:49:40,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8595 states to 8595 states and 13715 transitions. [2022-12-13 12:49:40,121 INFO L78 Accepts]: Start accepts. Automaton has 8595 states and 13715 transitions. Word has length 134 [2022-12-13 12:49:40,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:49:40,122 INFO L495 AbstractCegarLoop]: Abstraction has 8595 states and 13715 transitions. [2022-12-13 12:49:40,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:40,122 INFO L276 IsEmpty]: Start isEmpty. Operand 8595 states and 13715 transitions. [2022-12-13 12:49:40,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 12:49:40,124 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:49:40,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:49:40,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:49:40,124 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:49:40,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:49:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1085233451, now seen corresponding path program 1 times [2022-12-13 12:49:40,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:49:40,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243540743] [2022-12-13 12:49:40,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:49:40,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:49:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:49:40,183 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 12:49:40,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:49:40,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243540743] [2022-12-13 12:49:40,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243540743] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:49:40,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:49:40,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:49:40,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725924874] [2022-12-13 12:49:40,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:49:40,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:49:40,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:49:40,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:49:40,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:49:40,186 INFO L87 Difference]: Start difference. First operand 8595 states and 13715 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:40,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:49:40,812 INFO L93 Difference]: Finished difference Result 16503 states and 26341 transitions. [2022-12-13 12:49:40,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:49:40,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-13 12:49:40,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:49:40,829 INFO L225 Difference]: With dead ends: 16503 [2022-12-13 12:49:40,829 INFO L226 Difference]: Without dead ends: 12015 [2022-12-13 12:49:40,834 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 12:49:40,834 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 212 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1184 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 12:49:40,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1184 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:49:40,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12015 states. [2022-12-13 12:49:41,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12015 to 12013. [2022-12-13 12:49:41,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12013 states, 12012 states have (on average 1.5886613386613386) internal successors, (19083), 12012 states have internal predecessors, (19083), 0 states have call successors, (0), 0 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 12:49:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12013 states to 12013 states and 19083 transitions. [2022-12-13 12:49:41,667 INFO L78 Accepts]: Start accepts. Automaton has 12013 states and 19083 transitions. Word has length 134 [2022-12-13 12:49:41,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:49:41,667 INFO L495 AbstractCegarLoop]: Abstraction has 12013 states and 19083 transitions. [2022-12-13 12:49:41,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:41,667 INFO L276 IsEmpty]: Start isEmpty. Operand 12013 states and 19083 transitions. [2022-12-13 12:49:41,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 12:49:41,668 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:49:41,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:49:41,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:49:41,669 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:49:41,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:49:41,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1854132875, now seen corresponding path program 1 times [2022-12-13 12:49:41,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:49:41,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645461562] [2022-12-13 12:49:41,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:49:41,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:49:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:49:41,731 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 12:49:41,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:49:41,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645461562] [2022-12-13 12:49:41,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645461562] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:49:41,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:49:41,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:49:41,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050716515] [2022-12-13 12:49:41,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:49:41,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:49:41,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:49:41,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:49:41,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:49:41,733 INFO L87 Difference]: Start difference. First operand 12013 states and 19083 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:42,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:49:42,649 INFO L93 Difference]: Finished difference Result 22873 states and 36347 transitions. [2022-12-13 12:49:42,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:49:42,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-13 12:49:42,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:49:42,672 INFO L225 Difference]: With dead ends: 22873 [2022-12-13 12:49:42,672 INFO L226 Difference]: Without dead ends: 16621 [2022-12-13 12:49:42,678 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 12:49:42,679 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 205 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1151 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 12:49:42,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1151 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:49:42,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16621 states. [2022-12-13 12:49:43,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16621 to 16619. [2022-12-13 12:49:43,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16619 states, 16618 states have (on average 1.5805752798170658) internal successors, (26266), 16618 states have internal predecessors, (26266), 0 states have call successors, (0), 0 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 12:49:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16619 states to 16619 states and 26266 transitions. [2022-12-13 12:49:43,904 INFO L78 Accepts]: Start accepts. Automaton has 16619 states and 26266 transitions. Word has length 134 [2022-12-13 12:49:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:49:43,905 INFO L495 AbstractCegarLoop]: Abstraction has 16619 states and 26266 transitions. [2022-12-13 12:49:43,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:43,905 INFO L276 IsEmpty]: Start isEmpty. Operand 16619 states and 26266 transitions. [2022-12-13 12:49:43,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 12:49:43,906 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:49:43,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:49:43,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:49:43,907 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:49:43,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:49:43,907 INFO L85 PathProgramCache]: Analyzing trace with hash -415568993, now seen corresponding path program 1 times [2022-12-13 12:49:43,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:49:43,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524024759] [2022-12-13 12:49:43,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:49:43,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:49:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:49:43,958 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 12:49:43,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:49:43,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524024759] [2022-12-13 12:49:43,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524024759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:49:43,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:49:43,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:49:43,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143835945] [2022-12-13 12:49:43,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:49:43,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:49:43,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:49:43,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:49:43,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:49:43,960 INFO L87 Difference]: Start difference. First operand 16619 states and 26266 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:45,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:49:45,405 INFO L93 Difference]: Finished difference Result 36024 states and 56844 transitions. [2022-12-13 12:49:45,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:49:45,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-13 12:49:45,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:49:45,433 INFO L225 Difference]: With dead ends: 36024 [2022-12-13 12:49:45,433 INFO L226 Difference]: Without dead ends: 24484 [2022-12-13 12:49:45,443 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 12:49:45,443 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 226 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1266 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 12:49:45,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 1266 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:49:45,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24484 states. [2022-12-13 12:49:47,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24484 to 24482. [2022-12-13 12:49:47,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24482 states, 24481 states have (on average 1.5676647195784486) internal successors, (38378), 24481 states have internal predecessors, (38378), 0 states have call successors, (0), 0 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 12:49:47,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24482 states to 24482 states and 38378 transitions. [2022-12-13 12:49:47,298 INFO L78 Accepts]: Start accepts. Automaton has 24482 states and 38378 transitions. Word has length 134 [2022-12-13 12:49:47,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:49:47,298 INFO L495 AbstractCegarLoop]: Abstraction has 24482 states and 38378 transitions. [2022-12-13 12:49:47,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:47,298 INFO L276 IsEmpty]: Start isEmpty. Operand 24482 states and 38378 transitions. [2022-12-13 12:49:47,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-13 12:49:47,299 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:49:47,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:49:47,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:49:47,299 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:49:47,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:49:47,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1371264934, now seen corresponding path program 1 times [2022-12-13 12:49:47,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:49:47,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347654467] [2022-12-13 12:49:47,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:49:47,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:49:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:49:47,537 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 12:49:47,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:49:47,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347654467] [2022-12-13 12:49:47,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347654467] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:49:47,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:49:47,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:49:47,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490908894] [2022-12-13 12:49:47,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:49:47,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:49:47,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:49:47,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:49:47,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:49:47,539 INFO L87 Difference]: Start difference. First operand 24482 states and 38378 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 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 12:49:50,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:49:50,229 INFO L93 Difference]: Finished difference Result 40497 states and 63131 transitions. [2022-12-13 12:49:50,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:49:50,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-12-13 12:49:50,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:49:50,284 INFO L225 Difference]: With dead ends: 40497 [2022-12-13 12:49:50,284 INFO L226 Difference]: Without dead ends: 40495 [2022-12-13 12:49:50,293 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 12:49:50,293 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 477 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 2556 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 12:49:50,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 2556 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:49:50,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40495 states. [2022-12-13 12:49:52,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40495 to 24802. [2022-12-13 12:49:52,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24802 states, 24801 states have (on average 1.5570743115196968) internal successors, (38617), 24801 states have internal predecessors, (38617), 0 states have call successors, (0), 0 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 12:49:52,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24802 states to 24802 states and 38617 transitions. [2022-12-13 12:49:52,442 INFO L78 Accepts]: Start accepts. Automaton has 24802 states and 38617 transitions. Word has length 140 [2022-12-13 12:49:52,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:49:52,443 INFO L495 AbstractCegarLoop]: Abstraction has 24802 states and 38617 transitions. [2022-12-13 12:49:52,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 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 12:49:52,443 INFO L276 IsEmpty]: Start isEmpty. Operand 24802 states and 38617 transitions. [2022-12-13 12:49:52,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-12-13 12:49:52,445 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:49:52,445 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:49:52,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:49:52,446 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:49:52,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:49:52,446 INFO L85 PathProgramCache]: Analyzing trace with hash 716470383, now seen corresponding path program 1 times [2022-12-13 12:49:52,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:49:52,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739541342] [2022-12-13 12:49:52,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:49:52,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:49:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:49:52,586 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 12:49:52,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:49:52,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739541342] [2022-12-13 12:49:52,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739541342] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:49:52,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:49:52,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:49:52,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326630076] [2022-12-13 12:49:52,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:49:52,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:49:52,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:49:52,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:49:52,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:49:52,587 INFO L87 Difference]: Start difference. First operand 24802 states and 38617 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 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 12:49:58,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:49:58,430 INFO L93 Difference]: Finished difference Result 86649 states and 135003 transitions. [2022-12-13 12:49:58,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:49:58,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 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 176 [2022-12-13 12:49:58,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:49:58,541 INFO L225 Difference]: With dead ends: 86649 [2022-12-13 12:49:58,542 INFO L226 Difference]: Without dead ends: 70387 [2022-12-13 12:49:58,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:49:58,568 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 1451 mSDsluCounter, 2313 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:49:58,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 3127 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:49:58,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70387 states. [2022-12-13 12:50:02,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70387 to 42326. [2022-12-13 12:50:02,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42326 states, 42325 states have (on average 1.553857058476078) internal successors, (65767), 42325 states have internal predecessors, (65767), 0 states have call successors, (0), 0 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 12:50:02,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42326 states to 42326 states and 65767 transitions. [2022-12-13 12:50:02,608 INFO L78 Accepts]: Start accepts. Automaton has 42326 states and 65767 transitions. Word has length 176 [2022-12-13 12:50:02,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:50:02,608 INFO L495 AbstractCegarLoop]: Abstraction has 42326 states and 65767 transitions. [2022-12-13 12:50:02,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 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 12:50:02,608 INFO L276 IsEmpty]: Start isEmpty. Operand 42326 states and 65767 transitions. [2022-12-13 12:50:02,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-12-13 12:50:02,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:50:02,611 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:50:02,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 12:50:02,611 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:50:02,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:50:02,611 INFO L85 PathProgramCache]: Analyzing trace with hash -230589309, now seen corresponding path program 1 times [2022-12-13 12:50:02,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:50:02,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231220528] [2022-12-13 12:50:02,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:50:02,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:50:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:50:02,758 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 12:50:02,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:50:02,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231220528] [2022-12-13 12:50:02,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231220528] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:50:02,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:50:02,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:50:02,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026793298] [2022-12-13 12:50:02,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:50:02,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:50:02,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:50:02,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:50:02,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:50:02,760 INFO L87 Difference]: Start difference. First operand 42326 states and 65767 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:10,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:50:10,677 INFO L93 Difference]: Finished difference Result 99202 states and 154503 transitions. [2022-12-13 12:50:10,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:50:10,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2022-12-13 12:50:10,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:50:10,791 INFO L225 Difference]: With dead ends: 99202 [2022-12-13 12:50:10,791 INFO L226 Difference]: Without dead ends: 82940 [2022-12-13 12:50:10,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:50:10,817 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 1555 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 2958 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:50:10,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 2958 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:50:10,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82940 states. [2022-12-13 12:50:17,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82940 to 64024. [2022-12-13 12:50:17,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64024 states, 64023 states have (on average 1.5526763819252456) internal successors, (99407), 64023 states have internal predecessors, (99407), 0 states have call successors, (0), 0 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 12:50:17,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64024 states to 64024 states and 99407 transitions. [2022-12-13 12:50:17,418 INFO L78 Accepts]: Start accepts. Automaton has 64024 states and 99407 transitions. Word has length 176 [2022-12-13 12:50:17,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:50:17,419 INFO L495 AbstractCegarLoop]: Abstraction has 64024 states and 99407 transitions. [2022-12-13 12:50:17,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:17,419 INFO L276 IsEmpty]: Start isEmpty. Operand 64024 states and 99407 transitions. [2022-12-13 12:50:17,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-12-13 12:50:17,421 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:50:17,421 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:50:17,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 12:50:17,421 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:50:17,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:50:17,422 INFO L85 PathProgramCache]: Analyzing trace with hash 538310115, now seen corresponding path program 1 times [2022-12-13 12:50:17,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:50:17,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139126830] [2022-12-13 12:50:17,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:50:17,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:50:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:50:17,551 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 12:50:17,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:50:17,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139126830] [2022-12-13 12:50:17,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139126830] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:50:17,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:50:17,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:50:17,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817100059] [2022-12-13 12:50:17,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:50:17,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:50:17,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:50:17,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:50:17,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:50:17,552 INFO L87 Difference]: Start difference. First operand 64024 states and 99407 transitions. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 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 12:50:26,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:50:26,586 INFO L93 Difference]: Finished difference Result 108075 states and 168275 transitions. [2022-12-13 12:50:26,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:50:26,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 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 176 [2022-12-13 12:50:26,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:50:26,726 INFO L225 Difference]: With dead ends: 108075 [2022-12-13 12:50:26,726 INFO L226 Difference]: Without dead ends: 91813 [2022-12-13 12:50:26,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:50:26,752 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 1465 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 3426 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:50:26,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 3426 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:50:26,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91813 states. [2022-12-13 12:50:34,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91813 to 77538. [2022-12-13 12:50:34,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77538 states, 77537 states have (on average 1.5529102235061971) internal successors, (120408), 77537 states have internal predecessors, (120408), 0 states have call successors, (0), 0 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 12:50:34,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77538 states to 77538 states and 120408 transitions. [2022-12-13 12:50:34,519 INFO L78 Accepts]: Start accepts. Automaton has 77538 states and 120408 transitions. Word has length 176 [2022-12-13 12:50:34,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:50:34,519 INFO L495 AbstractCegarLoop]: Abstraction has 77538 states and 120408 transitions. [2022-12-13 12:50:34,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 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 12:50:34,520 INFO L276 IsEmpty]: Start isEmpty. Operand 77538 states and 120408 transitions. [2022-12-13 12:50:34,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-12-13 12:50:34,522 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:50:34,522 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:50:34,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 12:50:34,522 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:50:34,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:50:34,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1731391753, now seen corresponding path program 1 times [2022-12-13 12:50:34,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:50:34,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964271706] [2022-12-13 12:50:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:50:34,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:50:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:50:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:50:34,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:50:34,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964271706] [2022-12-13 12:50:34,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964271706] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:50:34,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:50:34,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:50:34,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579015472] [2022-12-13 12:50:34,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:50:34,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:50:34,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:50:34,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:50:34,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:50:34,650 INFO L87 Difference]: Start difference. First operand 77538 states and 120408 transitions. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 12:50:45,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:50:45,028 INFO L93 Difference]: Finished difference Result 111464 states and 173575 transitions. [2022-12-13 12:50:45,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:50:45,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 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 176 [2022-12-13 12:50:45,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:50:45,262 INFO L225 Difference]: With dead ends: 111464 [2022-12-13 12:50:45,262 INFO L226 Difference]: Without dead ends: 101418 [2022-12-13 12:50:45,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:50:45,281 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 1448 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 3645 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:50:45,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1448 Valid, 3645 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:50:45,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101418 states. [2022-12-13 12:50:54,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101418 to 87170. [2022-12-13 12:50:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87170 states, 87169 states have (on average 1.5536945473734929) internal successors, (135434), 87169 states have internal predecessors, (135434), 0 states have call successors, (0), 0 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 12:50:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87170 states to 87170 states and 135434 transitions. [2022-12-13 12:50:54,564 INFO L78 Accepts]: Start accepts. Automaton has 87170 states and 135434 transitions. Word has length 176 [2022-12-13 12:50:54,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:50:54,564 INFO L495 AbstractCegarLoop]: Abstraction has 87170 states and 135434 transitions. [2022-12-13 12:50:54,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 12:50:54,564 INFO L276 IsEmpty]: Start isEmpty. Operand 87170 states and 135434 transitions. [2022-12-13 12:50:54,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-12-13 12:50:54,567 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:50:54,567 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:50:54,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 12:50:54,567 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:50:54,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:50:54,567 INFO L85 PathProgramCache]: Analyzing trace with hash 616508921, now seen corresponding path program 1 times [2022-12-13 12:50:54,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:50:54,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567734567] [2022-12-13 12:50:54,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:50:54,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:50:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:50:54,627 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:50:54,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:50:54,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567734567] [2022-12-13 12:50:54,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567734567] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:50:54,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:50:54,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:50:54,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081356216] [2022-12-13 12:50:54,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:50:54,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:50:54,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:50:54,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:50:54,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:50:54,629 INFO L87 Difference]: Start difference. First operand 87170 states and 135434 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 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 12:51:09,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:09,149 INFO L93 Difference]: Finished difference Result 182646 states and 284298 transitions. [2022-12-13 12:51:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:51:09,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 177 [2022-12-13 12:51:09,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:09,350 INFO L225 Difference]: With dead ends: 182646 [2022-12-13 12:51:09,350 INFO L226 Difference]: Without dead ends: 138218 [2022-12-13 12:51:09,393 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 12:51:09,393 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 196 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:09,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 1066 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:51:09,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138218 states. [2022-12-13 12:51:24,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138218 to 138028. [2022-12-13 12:51:24,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138028 states, 138027 states have (on average 1.5538409151832613) internal successors, (214472), 138027 states have internal predecessors, (214472), 0 states have call successors, (0), 0 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 12:51:24,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138028 states to 138028 states and 214472 transitions. [2022-12-13 12:51:24,304 INFO L78 Accepts]: Start accepts. Automaton has 138028 states and 214472 transitions. Word has length 177 [2022-12-13 12:51:24,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:24,304 INFO L495 AbstractCegarLoop]: Abstraction has 138028 states and 214472 transitions. [2022-12-13 12:51:24,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 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 12:51:24,304 INFO L276 IsEmpty]: Start isEmpty. Operand 138028 states and 214472 transitions. [2022-12-13 12:51:24,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-12-13 12:51:24,307 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:24,307 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:24,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 12:51:24,308 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:24,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:24,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2094368511, now seen corresponding path program 1 times [2022-12-13 12:51:24,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:24,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920591602] [2022-12-13 12:51:24,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:24,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:51:24,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:24,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920591602] [2022-12-13 12:51:24,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920591602] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:24,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:24,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:51:24,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942489482] [2022-12-13 12:51:24,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:24,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:51:24,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:24,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:51:24,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:51:24,404 INFO L87 Difference]: Start difference. First operand 138028 states and 214472 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 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 12:51:43,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:43,501 INFO L93 Difference]: Finished difference Result 216220 states and 336560 transitions. [2022-12-13 12:51:43,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:51:43,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 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 177 [2022-12-13 12:51:43,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:43,785 INFO L225 Difference]: With dead ends: 216220 [2022-12-13 12:51:43,785 INFO L226 Difference]: Without dead ends: 176919 [2022-12-13 12:51:43,835 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 12:51:43,835 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 420 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1901 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 12:51:43,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 1901 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:51:43,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176919 states. [2022-12-13 12:52:02,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176919 to 162502. [2022-12-13 12:52:02,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162502 states, 162501 states have (on average 1.5530673657392877) internal successors, (252375), 162501 states have internal predecessors, (252375), 0 states have call successors, (0), 0 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 12:52:02,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162502 states to 162502 states and 252375 transitions. [2022-12-13 12:52:02,482 INFO L78 Accepts]: Start accepts. Automaton has 162502 states and 252375 transitions. Word has length 177 [2022-12-13 12:52:02,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:52:02,482 INFO L495 AbstractCegarLoop]: Abstraction has 162502 states and 252375 transitions. [2022-12-13 12:52:02,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 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 12:52:02,483 INFO L276 IsEmpty]: Start isEmpty. Operand 162502 states and 252375 transitions. [2022-12-13 12:52:02,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 12:52:02,486 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:52:02,486 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:02,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 12:52:02,486 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:52:02,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:52:02,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1727809027, now seen corresponding path program 1 times [2022-12-13 12:52:02,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:52:02,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156854128] [2022-12-13 12:52:02,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:02,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:52:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:02,542 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:52:02,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:52:02,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156854128] [2022-12-13 12:52:02,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156854128] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:52:02,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:52:02,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:52:02,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050611860] [2022-12-13 12:52:02,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:52:02,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:52:02,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:52:02,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:52:02,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:52:02,544 INFO L87 Difference]: Start difference. First operand 162502 states and 252375 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 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 12:52:40,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:52:40,461 INFO L93 Difference]: Finished difference Result 480875 states and 746162 transitions. [2022-12-13 12:52:40,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:52:40,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2022-12-13 12:52:40,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:52:41,117 INFO L225 Difference]: With dead ends: 480875 [2022-12-13 12:52:41,117 INFO L226 Difference]: Without dead ends: 318434 [2022-12-13 12:52:41,261 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 12:52:41,261 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 435 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:52:41,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 1381 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:52:41,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318434 states. [2022-12-13 12:53:19,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318434 to 318432. [2022-12-13 12:53:19,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318432 states, 318431 states have (on average 1.5448401694558633) internal successors, (491925), 318431 states have internal predecessors, (491925), 0 states have call successors, (0), 0 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 12:53:20,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318432 states to 318432 states and 491925 transitions. [2022-12-13 12:53:20,729 INFO L78 Accepts]: Start accepts. Automaton has 318432 states and 491925 transitions. Word has length 178 [2022-12-13 12:53:20,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:20,730 INFO L495 AbstractCegarLoop]: Abstraction has 318432 states and 491925 transitions. [2022-12-13 12:53:20,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 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 12:53:20,730 INFO L276 IsEmpty]: Start isEmpty. Operand 318432 states and 491925 transitions. [2022-12-13 12:53:20,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 12:53:20,735 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:20,736 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:20,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 12:53:20,736 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:20,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:20,736 INFO L85 PathProgramCache]: Analyzing trace with hash 504423939, now seen corresponding path program 1 times [2022-12-13 12:53:20,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:20,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075106970] [2022-12-13 12:53:20,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:20,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:53:20,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:20,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075106970] [2022-12-13 12:53:20,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075106970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:53:20,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:53:20,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:53:20,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262055104] [2022-12-13 12:53:20,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:53:20,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:53:20,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:20,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:53:20,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:53:20,800 INFO L87 Difference]: Start difference. First operand 318432 states and 491925 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 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 12:54:39,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:54:39,531 INFO L93 Difference]: Finished difference Result 942178 states and 1454108 transitions. [2022-12-13 12:54:39,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:54:39,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2022-12-13 12:54:39,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:54:40,785 INFO L225 Difference]: With dead ends: 942178 [2022-12-13 12:54:40,785 INFO L226 Difference]: Without dead ends: 623791 [2022-12-13 12:54:41,190 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 12:54:41,191 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 476 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:54:41,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1478 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:54:41,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623791 states. [2022-12-13 12:56:04,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623791 to 623789. [2022-12-13 12:56:05,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623789 states, 623788 states have (on average 1.5362943820657018) internal successors, (958322), 623788 states have internal predecessors, (958322), 0 states have call successors, (0), 0 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 12:56:06,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623789 states to 623789 states and 958322 transitions. [2022-12-13 12:56:06,617 INFO L78 Accepts]: Start accepts. Automaton has 623789 states and 958322 transitions. Word has length 178 [2022-12-13 12:56:06,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:56:06,618 INFO L495 AbstractCegarLoop]: Abstraction has 623789 states and 958322 transitions. [2022-12-13 12:56:06,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 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 12:56:06,618 INFO L276 IsEmpty]: Start isEmpty. Operand 623789 states and 958322 transitions. [2022-12-13 12:56:06,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 12:56:06,629 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:56:06,629 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:56:06,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 12:56:06,629 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:56:06,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:56:06,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1215339085, now seen corresponding path program 1 times [2022-12-13 12:56:06,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:56:06,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317370433] [2022-12-13 12:56:06,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:06,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:56:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:56:06,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:56:06,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317370433] [2022-12-13 12:56:06,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317370433] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:56:06,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:56:06,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:56:06,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506920815] [2022-12-13 12:56:06,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:56:06,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:56:06,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:56:06,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:56:06,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:56:06,686 INFO L87 Difference]: Start difference. First operand 623789 states and 958322 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 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 12:58:57,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:58:57,068 INFO L93 Difference]: Finished difference Result 1845091 states and 2831566 transitions. [2022-12-13 12:58:57,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:58:57,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2022-12-13 12:58:57,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:58:59,764 INFO L225 Difference]: With dead ends: 1845091 [2022-12-13 12:58:59,764 INFO L226 Difference]: Without dead ends: 1221439 [2022-12-13 12:59:00,544 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 12:59:00,545 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 474 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:59:00,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 1449 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:59:01,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221439 states.