./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf626c14-0039-4857-9684-74cc09e9cb04/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf626c14-0039-4857-9684-74cc09e9cb04/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf626c14-0039-4857-9684-74cc09e9cb04/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf626c14-0039-4857-9684-74cc09e9cb04/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf626c14-0039-4857-9684-74cc09e9cb04/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf626c14-0039-4857-9684-74cc09e9cb04/bin/uautomizer-YU5uOKAj3y --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 eebc57bb84d5e49c07b21e35f27ee095cb699b6ae996e22651132239fcb21755 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:18:59,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:18:59,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:19:00,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:19:00,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:19:00,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:19:00,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:19:00,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:19:00,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:19:00,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:19:00,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:19:00,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:19:00,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:19:00,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:19:00,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:19:00,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:19:00,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:19:00,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:19:00,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:19:00,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:19:00,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:19:00,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:19:00,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:19:00,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:19:00,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:19:00,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:19:00,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:19:00,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:19:00,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:19:00,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:19:00,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:19:00,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:19:00,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:19:00,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:19:00,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:19:00,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:19:00,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:19:00,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:19:00,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:19:00,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:19:00,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:19:00,089 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf626c14-0039-4857-9684-74cc09e9cb04/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:19:00,133 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:19:00,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:19:00,134 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:19:00,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:19:00,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:19:00,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:19:00,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:19:00,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:19:00,143 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:19:00,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:19:00,145 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:19:00,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:19:00,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:19:00,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:19:00,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:19:00,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:19:00,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:19:00,147 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:19:00,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:19:00,147 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:19:00,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:19:00,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:19:00,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:19:00,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:19:00,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:19:00,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:19:00,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:19:00,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:19:00,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:19:00,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:19:00,150 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:19:00,150 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:19:00,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:19:00,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:19:00,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf626c14-0039-4857-9684-74cc09e9cb04/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf626c14-0039-4857-9684-74cc09e9cb04/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eebc57bb84d5e49c07b21e35f27ee095cb699b6ae996e22651132239fcb21755 [2021-11-13 18:19:00,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:19:00,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:19:00,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:19:00,468 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:19:00,469 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:19:00,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf626c14-0039-4857-9684-74cc09e9cb04/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.c [2021-11-13 18:19:00,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf626c14-0039-4857-9684-74cc09e9cb04/bin/uautomizer-YU5uOKAj3y/data/def8137cf/c911c8c083cb46cf9cfb9112089e69cd/FLAGc075f67d0 [2021-11-13 18:19:01,865 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:19:01,867 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf626c14-0039-4857-9684-74cc09e9cb04/sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.c [2021-11-13 18:19:01,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf626c14-0039-4857-9684-74cc09e9cb04/bin/uautomizer-YU5uOKAj3y/data/def8137cf/c911c8c083cb46cf9cfb9112089e69cd/FLAGc075f67d0 [2021-11-13 18:19:01,978 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf626c14-0039-4857-9684-74cc09e9cb04/bin/uautomizer-YU5uOKAj3y/data/def8137cf/c911c8c083cb46cf9cfb9112089e69cd [2021-11-13 18:19:01,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:19:01,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:19:01,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:19:01,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:19:01,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:19:01,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:19:01" (1/1) ... [2021-11-13 18:19:01,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316d3c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:19:01, skipping insertion in model container [2021-11-13 18:19:01,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:19:01" (1/1) ... [2021-11-13 18:19:02,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:19:02,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:19:04,921 WARN L228 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_cf626c14-0039-4857-9684-74cc09e9cb04/sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.c[381679,381692] [2021-11-13 18:19:04,956 WARN L228 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_cf626c14-0039-4857-9684-74cc09e9cb04/sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.c[383339,383352] [2021-11-13 18:19:05,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:19:05,438 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:19:07,162 WARN L228 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_cf626c14-0039-4857-9684-74cc09e9cb04/sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.c[381679,381692] [2021-11-13 18:19:07,168 WARN L228 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_cf626c14-0039-4857-9684-74cc09e9cb04/sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.c[383339,383352] [2021-11-13 18:19:07,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:19:07,322 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:19:07,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:19:07 WrapperNode [2021-11-13 18:19:07,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:19:07,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:19:07,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:19:07,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:19:07,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:19:07" (1/1) ... [2021-11-13 18:19:07,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:19:07" (1/1) ... [2021-11-13 18:19:08,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:19:08,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:19:08,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:19:08,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:19:08,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:19:07" (1/1) ... [2021-11-13 18:19:08,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:19:07" (1/1) ... [2021-11-13 18:19:08,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:19:07" (1/1) ... [2021-11-13 18:19:08,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:19:07" (1/1) ... [2021-11-13 18:19:08,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:19:07" (1/1) ... [2021-11-13 18:19:08,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:19:07" (1/1) ... [2021-11-13 18:19:08,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:19:07" (1/1) ... [2021-11-13 18:19:08,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:19:08,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:19:08,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:19:08,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:19:08,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:19:07" (1/1) ... [2021-11-13 18:19:08,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:19:08,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf626c14-0039-4857-9684-74cc09e9cb04/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:19:09,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf626c14-0039-4857-9684-74cc09e9cb04/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:19:09,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf626c14-0039-4857-9684-74cc09e9cb04/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:19:09,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:19:09,066 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-13 18:19:09,066 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-13 18:19:09,066 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-13 18:19:09,066 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-13 18:19:09,067 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-13 18:19:09,067 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-13 18:19:09,067 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-11-13 18:19:09,067 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-11-13 18:19:09,068 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-13 18:19:09,068 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-13 18:19:09,068 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-13 18:19:09,068 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-13 18:19:09,068 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-13 18:19:09,069 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-13 18:19:09,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:19:09,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:19:09,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:19:17,895 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:19:17,896 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-13 18:19:17,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:19:17 BoogieIcfgContainer [2021-11-13 18:19:17,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:19:17,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:19:17,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:19:17,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:19:17,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:19:01" (1/3) ... [2021-11-13 18:19:17,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f24a4e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:19:17, skipping insertion in model container [2021-11-13 18:19:17,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:19:07" (2/3) ... [2021-11-13 18:19:17,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f24a4e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:19:17, skipping insertion in model container [2021-11-13 18:19:17,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:19:17" (3/3) ... [2021-11-13 18:19:17,920 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.15.cil.c [2021-11-13 18:19:17,926 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:19:17,927 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 18:19:18,018 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:19:18,028 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:19:18,029 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-13 18:19:18,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 2596 states, 2557 states have (on average 1.8420023464998045) internal successors, (4710), 2562 states have internal predecessors, (4710), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-13 18:19:18,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:19:18,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:18,161 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:18,161 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:19:18,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:18,168 INFO L85 PathProgramCache]: Analyzing trace with hash -842334402, now seen corresponding path program 1 times [2021-11-13 18:19:18,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:19:18,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450539212] [2021-11-13 18:19:18,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:18,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:19:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:18,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:19:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:18,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:19:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:18,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:19:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:18,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:19:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:18,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:19:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:18,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:19:18,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450539212] [2021-11-13 18:19:18,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450539212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:18,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:18,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:19:18,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592780909] [2021-11-13 18:19:18,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:18,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:19:18,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:19:19,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:19:19,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:19:19,038 INFO L87 Difference]: Start difference. First operand has 2596 states, 2557 states have (on average 1.8420023464998045) internal successors, (4710), 2562 states have internal predecessors, (4710), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:22,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:22,112 INFO L93 Difference]: Finished difference Result 5336 states and 9785 transitions. [2021-11-13 18:19:22,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:19:22,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:19:22,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:22,166 INFO L225 Difference]: With dead ends: 5336 [2021-11-13 18:19:22,166 INFO L226 Difference]: Without dead ends: 2681 [2021-11-13 18:19:22,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:19:22,203 INFO L933 BasicCegarLoop]: 4737 mSDtfsCounter, 1117 mSDsluCounter, 12522 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1902.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 17259 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 166.74ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2178.56ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:22,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 17259 Invalid, 821 Unknown, 0 Unchecked, 166.74ms Time], IncrementalHoareTripleChecker [66 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 2178.56ms Time] [2021-11-13 18:19:22,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-11-13 18:19:22,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2528. [2021-11-13 18:19:22,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8245684464070655) internal successors, (4545), 2494 states have internal predecessors, (4545), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-13 18:19:22,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4601 transitions. [2021-11-13 18:19:22,493 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4601 transitions. Word has length 190 [2021-11-13 18:19:22,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:22,494 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 4601 transitions. [2021-11-13 18:19:22,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:22,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4601 transitions. [2021-11-13 18:19:22,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:19:22,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:22,504 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:22,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:19:22,505 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:19:22,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:22,506 INFO L85 PathProgramCache]: Analyzing trace with hash -26287172, now seen corresponding path program 1 times [2021-11-13 18:19:22,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:19:22,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448563116] [2021-11-13 18:19:22,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:22,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:19:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:22,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:19:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:22,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:19:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:22,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:19:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:22,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:19:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:22,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:19:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:22,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:19:22,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448563116] [2021-11-13 18:19:22,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448563116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:22,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:22,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:19:22,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193050313] [2021-11-13 18:19:22,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:22,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:19:22,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:19:22,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:19:22,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:19:22,863 INFO L87 Difference]: Start difference. First operand 2528 states and 4601 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:25,114 INFO L93 Difference]: Finished difference Result 3071 states and 5479 transitions. [2021-11-13 18:19:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:19:25,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:19:25,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:25,138 INFO L225 Difference]: With dead ends: 3071 [2021-11-13 18:19:25,138 INFO L226 Difference]: Without dead ends: 2681 [2021-11-13 18:19:25,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:19:25,149 INFO L933 BasicCegarLoop]: 4667 mSDtfsCounter, 1103 mSDsluCounter, 12319 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1470.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 16986 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 108.28ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1702.84ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:25,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 16986 Invalid, 820 Unknown, 0 Unchecked, 108.28ms Time], IncrementalHoareTripleChecker [66 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1702.84ms Time] [2021-11-13 18:19:25,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-11-13 18:19:25,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2528. [2021-11-13 18:19:25,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8241670012043356) internal successors, (4544), 2494 states have internal predecessors, (4544), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-13 18:19:25,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4600 transitions. [2021-11-13 18:19:25,306 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4600 transitions. Word has length 190 [2021-11-13 18:19:25,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:25,308 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 4600 transitions. [2021-11-13 18:19:25,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:25,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4600 transitions. [2021-11-13 18:19:25,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:19:25,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:25,318 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:25,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:19:25,319 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:19:25,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:25,321 INFO L85 PathProgramCache]: Analyzing trace with hash -674879942, now seen corresponding path program 1 times [2021-11-13 18:19:25,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:19:25,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870134134] [2021-11-13 18:19:25,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:25,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:19:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:25,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:19:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:25,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:19:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:25,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:19:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:25,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:19:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:25,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:19:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:25,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:25,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:19:25,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870134134] [2021-11-13 18:19:25,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870134134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:25,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:25,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:19:25,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644424915] [2021-11-13 18:19:25,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:25,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:19:25,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:19:25,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:19:25,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:19:25,691 INFO L87 Difference]: Start difference. First operand 2528 states and 4600 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:28,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:28,794 INFO L93 Difference]: Finished difference Result 3066 states and 5471 transitions. [2021-11-13 18:19:28,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:19:28,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:19:28,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:28,816 INFO L225 Difference]: With dead ends: 3066 [2021-11-13 18:19:28,817 INFO L226 Difference]: Without dead ends: 2680 [2021-11-13 18:19:28,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:19:28,822 INFO L933 BasicCegarLoop]: 4621 mSDtfsCounter, 5052 mSDsluCounter, 12596 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2207.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5073 SdHoareTripleChecker+Valid, 17217 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 118.26ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2514.93ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:28,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5073 Valid, 17217 Invalid, 1491 Unknown, 0 Unchecked, 118.26ms Time], IncrementalHoareTripleChecker [72 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 2514.93ms Time] [2021-11-13 18:19:28,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2021-11-13 18:19:28,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2528. [2021-11-13 18:19:28,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8237655560016057) internal successors, (4543), 2494 states have internal predecessors, (4543), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-13 18:19:28,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4599 transitions. [2021-11-13 18:19:28,957 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4599 transitions. Word has length 190 [2021-11-13 18:19:28,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:28,958 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 4599 transitions. [2021-11-13 18:19:28,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:28,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4599 transitions. [2021-11-13 18:19:28,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:19:28,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:28,963 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:28,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:19:28,964 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:19:28,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:28,965 INFO L85 PathProgramCache]: Analyzing trace with hash -166101128, now seen corresponding path program 1 times [2021-11-13 18:19:28,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:19:28,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14656032] [2021-11-13 18:19:28,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:28,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:19:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:29,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:19:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:29,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:19:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:29,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:19:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:29,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:19:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:29,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:19:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:29,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:29,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:19:29,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14656032] [2021-11-13 18:19:29,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14656032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:29,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:29,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:19:29,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640000779] [2021-11-13 18:19:29,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:29,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:19:29,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:19:29,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:19:29,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:19:29,329 INFO L87 Difference]: Start difference. First operand 2528 states and 4599 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:32,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:32,404 INFO L93 Difference]: Finished difference Result 3093 states and 5522 transitions. [2021-11-13 18:19:32,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:19:32,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:19:32,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:32,425 INFO L225 Difference]: With dead ends: 3093 [2021-11-13 18:19:32,425 INFO L226 Difference]: Without dead ends: 2707 [2021-11-13 18:19:32,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:19:32,429 INFO L933 BasicCegarLoop]: 4666 mSDtfsCounter, 5156 mSDsluCounter, 16846 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2150.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5177 SdHoareTripleChecker+Valid, 21512 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 117.01ms SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2470.51ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:32,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5177 Valid, 21512 Invalid, 1715 Unknown, 0 Unchecked, 117.01ms Time], IncrementalHoareTripleChecker [79 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 2470.51ms Time] [2021-11-13 18:19:32,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2021-11-13 18:19:32,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 2528. [2021-11-13 18:19:32,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.823364110798876) internal successors, (4542), 2494 states have internal predecessors, (4542), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-13 18:19:32,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4598 transitions. [2021-11-13 18:19:32,544 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4598 transitions. Word has length 190 [2021-11-13 18:19:32,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:32,546 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 4598 transitions. [2021-11-13 18:19:32,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:32,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4598 transitions. [2021-11-13 18:19:32,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:19:32,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:32,558 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:32,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:19:32,558 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:19:32,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:32,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2089351558, now seen corresponding path program 1 times [2021-11-13 18:19:32,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:19:32,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303289086] [2021-11-13 18:19:32,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:32,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:19:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:32,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:19:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:32,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:19:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:32,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:19:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:32,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:19:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:32,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:19:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:32,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:19:32,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303289086] [2021-11-13 18:19:32,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303289086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:32,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:32,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:19:32,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106613391] [2021-11-13 18:19:32,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:32,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:19:32,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:19:32,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:19:32,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:19:32,815 INFO L87 Difference]: Start difference. First operand 2528 states and 4598 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:37,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:37,553 INFO L93 Difference]: Finished difference Result 3704 states and 6533 transitions. [2021-11-13 18:19:37,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 18:19:37,554 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:19:37,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:37,582 INFO L225 Difference]: With dead ends: 3704 [2021-11-13 18:19:37,582 INFO L226 Difference]: Without dead ends: 3318 [2021-11-13 18:19:37,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-13 18:19:37,589 INFO L933 BasicCegarLoop]: 5101 mSDtfsCounter, 6127 mSDsluCounter, 18294 mSDsCounter, 0 mSdLazyCounter, 3427 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3079.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6148 SdHoareTripleChecker+Valid, 23395 SdHoareTripleChecker+Invalid, 3552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 92.39ms SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3672.88ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:37,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6148 Valid, 23395 Invalid, 3552 Unknown, 0 Unchecked, 92.39ms Time], IncrementalHoareTripleChecker [125 Valid, 3427 Invalid, 0 Unknown, 0 Unchecked, 3672.88ms Time] [2021-11-13 18:19:37,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3318 states. [2021-11-13 18:19:37,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3318 to 2964. [2021-11-13 18:19:37,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 2894 states have (on average 1.7950932964754664) internal successors, (5195), 2899 states have internal predecessors, (5195), 54 states have call successors, (54), 13 states have call predecessors, (54), 14 states have return successors, (59), 53 states have call predecessors, (59), 52 states have call successors, (59) [2021-11-13 18:19:37,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 5308 transitions. [2021-11-13 18:19:37,786 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 5308 transitions. Word has length 190 [2021-11-13 18:19:37,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:37,787 INFO L470 AbstractCegarLoop]: Abstraction has 2964 states and 5308 transitions. [2021-11-13 18:19:37,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:37,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 5308 transitions. [2021-11-13 18:19:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:19:37,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:37,794 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:37,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:19:37,795 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:19:37,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:37,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1590794756, now seen corresponding path program 1 times [2021-11-13 18:19:37,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:19:37,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709719762] [2021-11-13 18:19:37,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:37,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:19:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:37,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:19:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:37,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:19:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:38,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:19:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:38,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:19:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:38,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:19:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:38,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:19:38,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709719762] [2021-11-13 18:19:38,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709719762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:38,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:38,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:19:38,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343126263] [2021-11-13 18:19:38,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:38,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:19:38,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:19:38,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:19:38,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:19:38,085 INFO L87 Difference]: Start difference. First operand 2964 states and 5308 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:41,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:41,238 INFO L93 Difference]: Finished difference Result 4159 states and 7288 transitions. [2021-11-13 18:19:41,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:19:41,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:19:41,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:41,262 INFO L225 Difference]: With dead ends: 4159 [2021-11-13 18:19:41,262 INFO L226 Difference]: Without dead ends: 3337 [2021-11-13 18:19:41,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:19:41,268 INFO L933 BasicCegarLoop]: 4657 mSDtfsCounter, 5156 mSDsluCounter, 16846 mSDsCounter, 0 mSdLazyCounter, 1611 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2217.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5177 SdHoareTripleChecker+Valid, 21503 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 104.80ms SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2532.53ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:41,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5177 Valid, 21503 Invalid, 1691 Unknown, 0 Unchecked, 104.80ms Time], IncrementalHoareTripleChecker [80 Valid, 1611 Invalid, 0 Unknown, 0 Unchecked, 2532.53ms Time] [2021-11-13 18:19:41,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3337 states. [2021-11-13 18:19:41,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3337 to 2964. [2021-11-13 18:19:41,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 2894 states have (on average 1.7940566689702833) internal successors, (5192), 2899 states have internal predecessors, (5192), 54 states have call successors, (54), 13 states have call predecessors, (54), 14 states have return successors, (59), 53 states have call predecessors, (59), 52 states have call successors, (59) [2021-11-13 18:19:41,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 5305 transitions. [2021-11-13 18:19:41,478 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 5305 transitions. Word has length 190 [2021-11-13 18:19:41,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:41,480 INFO L470 AbstractCegarLoop]: Abstraction has 2964 states and 5305 transitions. [2021-11-13 18:19:41,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:41,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 5305 transitions. [2021-11-13 18:19:41,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:19:41,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:41,488 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:41,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:19:41,489 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:19:41,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:41,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1020522950, now seen corresponding path program 1 times [2021-11-13 18:19:41,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:19:41,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872065286] [2021-11-13 18:19:41,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:41,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:19:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:41,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:19:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:41,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:19:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:41,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:19:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:41,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:19:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:41,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:19:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:41,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:19:41,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872065286] [2021-11-13 18:19:41,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872065286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:41,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:41,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:19:41,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688080487] [2021-11-13 18:19:41,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:41,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:19:41,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:19:41,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:19:41,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:19:41,752 INFO L87 Difference]: Start difference. First operand 2964 states and 5305 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:44,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:44,450 INFO L93 Difference]: Finished difference Result 4155 states and 7273 transitions. [2021-11-13 18:19:44,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:19:44,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:19:44,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:44,474 INFO L225 Difference]: With dead ends: 4155 [2021-11-13 18:19:44,474 INFO L226 Difference]: Without dead ends: 3333 [2021-11-13 18:19:44,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:19:44,481 INFO L933 BasicCegarLoop]: 4653 mSDtfsCounter, 5332 mSDsluCounter, 12677 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1889.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5353 SdHoareTripleChecker+Valid, 17330 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.84ms SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2163.23ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:44,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5353 Valid, 17330 Invalid, 1526 Unknown, 0 Unchecked, 62.84ms Time], IncrementalHoareTripleChecker [109 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 2163.23ms Time] [2021-11-13 18:19:44,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3333 states. [2021-11-13 18:19:44,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3333 to 2964. [2021-11-13 18:19:44,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 2894 states have (on average 1.7930200414651003) internal successors, (5189), 2899 states have internal predecessors, (5189), 54 states have call successors, (54), 13 states have call predecessors, (54), 14 states have return successors, (59), 53 states have call predecessors, (59), 52 states have call successors, (59) [2021-11-13 18:19:44,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 5302 transitions. [2021-11-13 18:19:44,638 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 5302 transitions. Word has length 190 [2021-11-13 18:19:44,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:44,639 INFO L470 AbstractCegarLoop]: Abstraction has 2964 states and 5302 transitions. [2021-11-13 18:19:44,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:44,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 5302 transitions. [2021-11-13 18:19:44,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:19:44,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:44,644 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:44,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:19:44,644 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:19:44,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:44,645 INFO L85 PathProgramCache]: Analyzing trace with hash 383346236, now seen corresponding path program 1 times [2021-11-13 18:19:44,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:19:44,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105391320] [2021-11-13 18:19:44,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:44,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:19:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:44,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:19:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:44,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:19:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:44,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:19:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:44,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:19:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:44,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:19:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:44,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:19:44,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105391320] [2021-11-13 18:19:44,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105391320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:44,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:44,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:19:44,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466039851] [2021-11-13 18:19:44,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:44,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:19:44,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:19:44,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:19:44,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:19:44,851 INFO L87 Difference]: Start difference. First operand 2964 states and 5302 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:47,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:47,242 INFO L93 Difference]: Finished difference Result 4151 states and 7258 transitions. [2021-11-13 18:19:47,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:19:47,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:19:47,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:47,265 INFO L225 Difference]: With dead ends: 4151 [2021-11-13 18:19:47,271 INFO L226 Difference]: Without dead ends: 3329 [2021-11-13 18:19:47,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:19:47,277 INFO L933 BasicCegarLoop]: 4604 mSDtfsCounter, 5238 mSDsluCounter, 16844 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1584.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5259 SdHoareTripleChecker+Valid, 21448 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 85.11ms SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1893.26ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:47,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5259 Valid, 21448 Invalid, 1577 Unknown, 0 Unchecked, 85.11ms Time], IncrementalHoareTripleChecker [82 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 1893.26ms Time] [2021-11-13 18:19:47,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3329 states. [2021-11-13 18:19:47,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3329 to 2964. [2021-11-13 18:19:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 2894 states have (on average 1.7919834139599171) internal successors, (5186), 2899 states have internal predecessors, (5186), 54 states have call successors, (54), 13 states have call predecessors, (54), 14 states have return successors, (59), 53 states have call predecessors, (59), 52 states have call successors, (59) [2021-11-13 18:19:47,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 5299 transitions. [2021-11-13 18:19:47,445 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 5299 transitions. Word has length 190 [2021-11-13 18:19:47,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:47,445 INFO L470 AbstractCegarLoop]: Abstraction has 2964 states and 5299 transitions. [2021-11-13 18:19:47,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:47,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 5299 transitions. [2021-11-13 18:19:47,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:19:47,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:47,451 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:47,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:19:47,451 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:19:47,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:47,452 INFO L85 PathProgramCache]: Analyzing trace with hash -402651654, now seen corresponding path program 1 times [2021-11-13 18:19:47,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:19:47,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27230734] [2021-11-13 18:19:47,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:47,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:19:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:47,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:19:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:47,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:19:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:47,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:19:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:47,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:19:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:47,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:19:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:47,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:19:47,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27230734] [2021-11-13 18:19:47,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27230734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:47,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:47,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:19:47,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021935834] [2021-11-13 18:19:47,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:47,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:19:47,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:19:47,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:19:47,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:19:47,688 INFO L87 Difference]: Start difference. First operand 2964 states and 5299 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:50,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:50,024 INFO L93 Difference]: Finished difference Result 4147 states and 7243 transitions. [2021-11-13 18:19:50,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:19:50,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:19:50,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:50,043 INFO L225 Difference]: With dead ends: 4147 [2021-11-13 18:19:50,043 INFO L226 Difference]: Without dead ends: 3325 [2021-11-13 18:19:50,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:19:50,050 INFO L933 BasicCegarLoop]: 4645 mSDtfsCounter, 5150 mSDsluCounter, 16846 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1620.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5171 SdHoareTripleChecker+Valid, 21491 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 76.26ms SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1887.36ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:50,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5171 Valid, 21491 Invalid, 1655 Unknown, 0 Unchecked, 76.26ms Time], IncrementalHoareTripleChecker [80 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 1887.36ms Time] [2021-11-13 18:19:50,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3325 states. [2021-11-13 18:19:50,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3325 to 2964. [2021-11-13 18:19:50,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 2894 states have (on average 1.790946786454734) internal successors, (5183), 2899 states have internal predecessors, (5183), 54 states have call successors, (54), 13 states have call predecessors, (54), 14 states have return successors, (59), 53 states have call predecessors, (59), 52 states have call successors, (59) [2021-11-13 18:19:50,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 5296 transitions. [2021-11-13 18:19:50,256 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 5296 transitions. Word has length 190 [2021-11-13 18:19:50,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:50,257 INFO L470 AbstractCegarLoop]: Abstraction has 2964 states and 5296 transitions. [2021-11-13 18:19:50,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:50,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 5296 transitions. [2021-11-13 18:19:50,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:19:50,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:50,264 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:50,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:19:50,264 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:19:50,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:50,268 INFO L85 PathProgramCache]: Analyzing trace with hash 264730236, now seen corresponding path program 1 times [2021-11-13 18:19:50,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:19:50,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715870209] [2021-11-13 18:19:50,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:50,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:19:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:50,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:19:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:50,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:19:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:50,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:19:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:50,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:19:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:50,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:19:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:50,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:50,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:19:50,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715870209] [2021-11-13 18:19:50,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715870209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:50,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:50,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:19:50,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356060984] [2021-11-13 18:19:50,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:50,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:19:50,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:19:50,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:19:50,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:19:50,529 INFO L87 Difference]: Start difference. First operand 2964 states and 5296 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:55,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:55,045 INFO L93 Difference]: Finished difference Result 5293 states and 9096 transitions. [2021-11-13 18:19:55,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 18:19:55,046 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:19:55,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:55,064 INFO L225 Difference]: With dead ends: 5293 [2021-11-13 18:19:55,064 INFO L226 Difference]: Without dead ends: 4473 [2021-11-13 18:19:55,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-13 18:19:55,071 INFO L933 BasicCegarLoop]: 5032 mSDtfsCounter, 6110 mSDsluCounter, 18158 mSDsCounter, 0 mSdLazyCounter, 3309 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2886.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6131 SdHoareTripleChecker+Valid, 23190 SdHoareTripleChecker+Invalid, 3445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 74.98ms SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 3309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3385.26ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:55,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6131 Valid, 23190 Invalid, 3445 Unknown, 0 Unchecked, 74.98ms Time], IncrementalHoareTripleChecker [136 Valid, 3309 Invalid, 0 Unknown, 0 Unchecked, 3385.26ms Time] [2021-11-13 18:19:55,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4473 states. [2021-11-13 18:19:55,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4473 to 3818. [2021-11-13 18:19:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3818 states, 3686 states have (on average 1.7504069451980466) internal successors, (6452), 3695 states have internal predecessors, (6452), 100 states have call successors, (100), 25 states have call predecessors, (100), 30 states have return successors, (121), 101 states have call predecessors, (121), 98 states have call successors, (121) [2021-11-13 18:19:55,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 6673 transitions. [2021-11-13 18:19:55,468 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 6673 transitions. Word has length 190 [2021-11-13 18:19:55,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:55,469 INFO L470 AbstractCegarLoop]: Abstraction has 3818 states and 6673 transitions. [2021-11-13 18:19:55,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:55,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 6673 transitions. [2021-11-13 18:19:55,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:19:55,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:55,475 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:55,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:19:55,476 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:19:55,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:55,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1930498630, now seen corresponding path program 1 times [2021-11-13 18:19:55,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:19:55,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609816249] [2021-11-13 18:19:55,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:55,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:19:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:55,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:19:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:55,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:19:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:55,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:19:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:55,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:19:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:55,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:19:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:55,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:55,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:19:55,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609816249] [2021-11-13 18:19:55,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609816249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:55,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:55,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:19:55,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942845018] [2021-11-13 18:19:55,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:55,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:19:55,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:19:55,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:19:55,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:19:55,716 INFO L87 Difference]: Start difference. First operand 3818 states and 6673 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:57,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:57,759 INFO L93 Difference]: Finished difference Result 6262 states and 10711 transitions. [2021-11-13 18:19:57,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:19:57,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:19:57,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:57,778 INFO L225 Difference]: With dead ends: 6262 [2021-11-13 18:19:57,779 INFO L226 Difference]: Without dead ends: 4586 [2021-11-13 18:19:57,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:19:57,790 INFO L933 BasicCegarLoop]: 4636 mSDtfsCounter, 5330 mSDsluCounter, 12677 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1230.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5351 SdHoareTripleChecker+Valid, 17313 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.12ms SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1461.19ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:57,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5351 Valid, 17313 Invalid, 1491 Unknown, 0 Unchecked, 45.12ms Time], IncrementalHoareTripleChecker [112 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 1461.19ms Time] [2021-11-13 18:19:57,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2021-11-13 18:19:58,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 3818. [2021-11-13 18:19:58,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3818 states, 3686 states have (on average 1.7490504612045579) internal successors, (6447), 3695 states have internal predecessors, (6447), 100 states have call successors, (100), 25 states have call predecessors, (100), 30 states have return successors, (121), 101 states have call predecessors, (121), 98 states have call successors, (121) [2021-11-13 18:19:58,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 6668 transitions. [2021-11-13 18:19:58,056 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 6668 transitions. Word has length 190 [2021-11-13 18:19:58,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:58,058 INFO L470 AbstractCegarLoop]: Abstraction has 3818 states and 6668 transitions. [2021-11-13 18:19:58,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:19:58,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 6668 transitions. [2021-11-13 18:19:58,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:19:58,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:58,063 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:58,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:19:58,064 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:19:58,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:58,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1585670468, now seen corresponding path program 1 times [2021-11-13 18:19:58,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:19:58,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905404829] [2021-11-13 18:19:58,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:58,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:19:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:58,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:19:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:58,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:19:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:58,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:19:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:58,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:19:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:58,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:19:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:58,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:19:58,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905404829] [2021-11-13 18:19:58,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905404829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:58,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:58,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:19:58,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173881358] [2021-11-13 18:19:58,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:58,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:19:58,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:19:58,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:19:58,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:19:58,310 INFO L87 Difference]: Start difference. First operand 3818 states and 6668 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:02,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:20:02,563 INFO L93 Difference]: Finished difference Result 8562 states and 14437 transitions. [2021-11-13 18:20:02,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 18:20:02,564 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:20:02,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:20:02,593 INFO L225 Difference]: With dead ends: 8562 [2021-11-13 18:20:02,594 INFO L226 Difference]: Without dead ends: 6888 [2021-11-13 18:20:02,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-13 18:20:02,603 INFO L933 BasicCegarLoop]: 5017 mSDtfsCounter, 6112 mSDsluCounter, 18158 mSDsCounter, 0 mSdLazyCounter, 3259 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2495.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6133 SdHoareTripleChecker+Valid, 23175 SdHoareTripleChecker+Invalid, 3399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 74.15ms SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 3259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2907.80ms IncrementalHoareTripleChecker+Time [2021-11-13 18:20:02,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6133 Valid, 23175 Invalid, 3399 Unknown, 0 Unchecked, 74.15ms Time], IncrementalHoareTripleChecker [140 Valid, 3259 Invalid, 0 Unknown, 0 Unchecked, 2907.80ms Time] [2021-11-13 18:20:02,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6888 states. [2021-11-13 18:20:03,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6888 to 5618. [2021-11-13 18:20:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5618 states, 5356 states have (on average 1.707430918595967) internal successors, (9145), 5379 states have internal predecessors, (9145), 192 states have call successors, (192), 49 states have call predecessors, (192), 68 states have return successors, (269), 197 states have call predecessors, (269), 190 states have call successors, (269) [2021-11-13 18:20:03,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5618 states to 5618 states and 9606 transitions. [2021-11-13 18:20:03,091 INFO L78 Accepts]: Start accepts. Automaton has 5618 states and 9606 transitions. Word has length 190 [2021-11-13 18:20:03,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:20:03,092 INFO L470 AbstractCegarLoop]: Abstraction has 5618 states and 9606 transitions. [2021-11-13 18:20:03,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:03,093 INFO L276 IsEmpty]: Start isEmpty. Operand 5618 states and 9606 transitions. [2021-11-13 18:20:03,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:20:03,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:20:03,099 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:20:03,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 18:20:03,099 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:20:03,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:20:03,100 INFO L85 PathProgramCache]: Analyzing trace with hash 939825214, now seen corresponding path program 1 times [2021-11-13 18:20:03,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:20:03,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996820916] [2021-11-13 18:20:03,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:20:03,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:20:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:03,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:20:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:03,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:20:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:03,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:20:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:03,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:20:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:03,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:20:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:20:03,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:20:03,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996820916] [2021-11-13 18:20:03,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996820916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:20:03,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:20:03,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:20:03,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740469005] [2021-11-13 18:20:03,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:20:03,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:20:03,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:20:03,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:20:03,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:20:03,361 INFO L87 Difference]: Start difference. First operand 5618 states and 9606 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:05,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:20:05,841 INFO L93 Difference]: Finished difference Result 10729 states and 18122 transitions. [2021-11-13 18:20:05,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:20:05,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:20:05,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:20:05,867 INFO L225 Difference]: With dead ends: 10729 [2021-11-13 18:20:05,867 INFO L226 Difference]: Without dead ends: 7253 [2021-11-13 18:20:05,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:20:05,883 INFO L933 BasicCegarLoop]: 4627 mSDtfsCounter, 5149 mSDsluCounter, 16846 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1481.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5170 SdHoareTripleChecker+Valid, 21473 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 71.82ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1714.51ms IncrementalHoareTripleChecker+Time [2021-11-13 18:20:05,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5170 Valid, 21473 Invalid, 1611 Unknown, 0 Unchecked, 71.82ms Time], IncrementalHoareTripleChecker [83 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 1714.51ms Time] [2021-11-13 18:20:05,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7253 states. [2021-11-13 18:20:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7253 to 5618. [2021-11-13 18:20:06,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5618 states, 5356 states have (on average 1.7057505601194922) internal successors, (9136), 5379 states have internal predecessors, (9136), 192 states have call successors, (192), 49 states have call predecessors, (192), 68 states have return successors, (269), 197 states have call predecessors, (269), 190 states have call successors, (269) [2021-11-13 18:20:06,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5618 states to 5618 states and 9597 transitions. [2021-11-13 18:20:06,543 INFO L78 Accepts]: Start accepts. Automaton has 5618 states and 9597 transitions. Word has length 190 [2021-11-13 18:20:06,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:20:06,543 INFO L470 AbstractCegarLoop]: Abstraction has 5618 states and 9597 transitions. [2021-11-13 18:20:06,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:06,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5618 states and 9597 transitions. [2021-11-13 18:20:06,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:20:06,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:20:06,550 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:20:06,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 18:20:06,551 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:20:06,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:20:06,551 INFO L85 PathProgramCache]: Analyzing trace with hash 328556156, now seen corresponding path program 1 times [2021-11-13 18:20:06,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:20:06,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070451688] [2021-11-13 18:20:06,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:20:06,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:20:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:06,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:20:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:06,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:20:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:20:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:06,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:20:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:06,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:20:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:06,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:20:06,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:20:06,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070451688] [2021-11-13 18:20:06,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070451688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:20:06,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:20:06,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:20:06,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682874758] [2021-11-13 18:20:06,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:20:06,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:20:06,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:20:06,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:20:06,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:20:06,768 INFO L87 Difference]: Start difference. First operand 5618 states and 9597 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:09,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:20:09,452 INFO L93 Difference]: Finished difference Result 10702 states and 18042 transitions. [2021-11-13 18:20:09,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:20:09,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:20:09,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:20:09,478 INFO L225 Difference]: With dead ends: 10702 [2021-11-13 18:20:09,478 INFO L226 Difference]: Without dead ends: 7226 [2021-11-13 18:20:09,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:20:09,493 INFO L933 BasicCegarLoop]: 4623 mSDtfsCounter, 5147 mSDsluCounter, 16846 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1604.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5168 SdHoareTripleChecker+Valid, 21469 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.53ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1837.01ms IncrementalHoareTripleChecker+Time [2021-11-13 18:20:09,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5168 Valid, 21469 Invalid, 1599 Unknown, 0 Unchecked, 80.53ms Time], IncrementalHoareTripleChecker [83 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 1837.01ms Time] [2021-11-13 18:20:09,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7226 states. [2021-11-13 18:20:09,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7226 to 5618. [2021-11-13 18:20:09,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5618 states, 5356 states have (on average 1.7040702016430171) internal successors, (9127), 5379 states have internal predecessors, (9127), 192 states have call successors, (192), 49 states have call predecessors, (192), 68 states have return successors, (269), 197 states have call predecessors, (269), 190 states have call successors, (269) [2021-11-13 18:20:09,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5618 states to 5618 states and 9588 transitions. [2021-11-13 18:20:09,939 INFO L78 Accepts]: Start accepts. Automaton has 5618 states and 9588 transitions. Word has length 190 [2021-11-13 18:20:09,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:20:09,939 INFO L470 AbstractCegarLoop]: Abstraction has 5618 states and 9588 transitions. [2021-11-13 18:20:09,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:09,940 INFO L276 IsEmpty]: Start isEmpty. Operand 5618 states and 9588 transitions. [2021-11-13 18:20:09,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:20:09,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:20:09,945 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:20:09,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 18:20:09,945 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:20:09,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:20:09,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1076635522, now seen corresponding path program 1 times [2021-11-13 18:20:09,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:20:09,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412875746] [2021-11-13 18:20:09,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:20:09,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:20:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:09,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:20:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:10,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:20:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:10,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:20:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:10,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:20:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:10,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:20:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:20:10,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:20:10,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412875746] [2021-11-13 18:20:10,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412875746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:20:10,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:20:10,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:20:10,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278355619] [2021-11-13 18:20:10,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:20:10,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:20:10,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:20:10,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:20:10,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:20:10,133 INFO L87 Difference]: Start difference. First operand 5618 states and 9588 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:12,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:20:12,365 INFO L93 Difference]: Finished difference Result 10675 states and 17962 transitions. [2021-11-13 18:20:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:20:12,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:20:12,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:20:12,390 INFO L225 Difference]: With dead ends: 10675 [2021-11-13 18:20:12,390 INFO L226 Difference]: Without dead ends: 7199 [2021-11-13 18:20:12,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:20:12,404 INFO L933 BasicCegarLoop]: 4590 mSDtfsCounter, 5375 mSDsluCounter, 12673 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1151.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5396 SdHoareTripleChecker+Valid, 17263 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.23ms SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1334.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:20:12,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5396 Valid, 17263 Invalid, 1427 Unknown, 0 Unchecked, 41.23ms Time], IncrementalHoareTripleChecker [116 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 1334.59ms Time] [2021-11-13 18:20:12,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7199 states. [2021-11-13 18:20:12,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7199 to 5618. [2021-11-13 18:20:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5618 states, 5356 states have (on average 1.7023898431665423) internal successors, (9118), 5379 states have internal predecessors, (9118), 192 states have call successors, (192), 49 states have call predecessors, (192), 68 states have return successors, (269), 197 states have call predecessors, (269), 190 states have call successors, (269) [2021-11-13 18:20:12,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5618 states to 5618 states and 9579 transitions. [2021-11-13 18:20:12,866 INFO L78 Accepts]: Start accepts. Automaton has 5618 states and 9579 transitions. Word has length 190 [2021-11-13 18:20:12,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:20:12,866 INFO L470 AbstractCegarLoop]: Abstraction has 5618 states and 9579 transitions. [2021-11-13 18:20:12,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:12,867 INFO L276 IsEmpty]: Start isEmpty. Operand 5618 states and 9579 transitions. [2021-11-13 18:20:12,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:20:12,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:20:12,873 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:20:12,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 18:20:12,874 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:20:12,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:20:12,874 INFO L85 PathProgramCache]: Analyzing trace with hash 817698364, now seen corresponding path program 1 times [2021-11-13 18:20:12,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:20:12,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805192474] [2021-11-13 18:20:12,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:20:12,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:20:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:12,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:20:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:12,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:20:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:13,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:20:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:13,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:20:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:13,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:20:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:20:13,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:20:13,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805192474] [2021-11-13 18:20:13,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805192474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:20:13,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:20:13,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:20:13,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178323958] [2021-11-13 18:20:13,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:20:13,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:20:13,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:20:13,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:20:13,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:20:13,048 INFO L87 Difference]: Start difference. First operand 5618 states and 9579 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:15,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:20:15,616 INFO L93 Difference]: Finished difference Result 10648 states and 17882 transitions. [2021-11-13 18:20:15,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:20:15,621 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:20:15,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:20:15,642 INFO L225 Difference]: With dead ends: 10648 [2021-11-13 18:20:15,642 INFO L226 Difference]: Without dead ends: 7172 [2021-11-13 18:20:15,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:20:15,656 INFO L933 BasicCegarLoop]: 4615 mSDtfsCounter, 5141 mSDsluCounter, 16844 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1526.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5162 SdHoareTripleChecker+Valid, 21459 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.18ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1746.48ms IncrementalHoareTripleChecker+Time [2021-11-13 18:20:15,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5162 Valid, 21459 Invalid, 1579 Unknown, 0 Unchecked, 72.18ms Time], IncrementalHoareTripleChecker [85 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 1746.48ms Time] [2021-11-13 18:20:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7172 states. [2021-11-13 18:20:16,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7172 to 5618. [2021-11-13 18:20:16,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5618 states, 5356 states have (on average 1.7007094846900672) internal successors, (9109), 5379 states have internal predecessors, (9109), 192 states have call successors, (192), 49 states have call predecessors, (192), 68 states have return successors, (269), 197 states have call predecessors, (269), 190 states have call successors, (269) [2021-11-13 18:20:16,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5618 states to 5618 states and 9570 transitions. [2021-11-13 18:20:16,251 INFO L78 Accepts]: Start accepts. Automaton has 5618 states and 9570 transitions. Word has length 190 [2021-11-13 18:20:16,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:20:16,251 INFO L470 AbstractCegarLoop]: Abstraction has 5618 states and 9570 transitions. [2021-11-13 18:20:16,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:16,252 INFO L276 IsEmpty]: Start isEmpty. Operand 5618 states and 9570 transitions. [2021-11-13 18:20:16,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:20:16,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:20:16,257 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:20:16,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 18:20:16,257 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:20:16,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:20:16,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2030688066, now seen corresponding path program 1 times [2021-11-13 18:20:16,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:20:16,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706402951] [2021-11-13 18:20:16,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:20:16,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:20:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:16,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:20:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:16,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:20:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:16,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:20:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:16,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:20:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:16,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:20:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:20:16,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:20:16,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706402951] [2021-11-13 18:20:16,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706402951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:20:16,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:20:16,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:20:16,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359733101] [2021-11-13 18:20:16,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:20:16,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:20:16,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:20:16,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:20:16,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:20:16,451 INFO L87 Difference]: Start difference. First operand 5618 states and 9570 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:22,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:20:22,135 INFO L93 Difference]: Finished difference Result 16681 states and 27597 transitions. [2021-11-13 18:20:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:20:22,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:20:22,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:20:22,176 INFO L225 Difference]: With dead ends: 16681 [2021-11-13 18:20:22,176 INFO L226 Difference]: Without dead ends: 13207 [2021-11-13 18:20:22,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-11-13 18:20:22,191 INFO L933 BasicCegarLoop]: 4989 mSDtfsCounter, 6212 mSDsluCounter, 22491 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3041.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6248 SdHoareTripleChecker+Valid, 27480 SdHoareTripleChecker+Invalid, 3616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 99.64ms SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3505.55ms IncrementalHoareTripleChecker+Time [2021-11-13 18:20:22,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6248 Valid, 27480 Invalid, 3616 Unknown, 0 Unchecked, 99.64ms Time], IncrementalHoareTripleChecker [110 Valid, 3506 Invalid, 0 Unknown, 0 Unchecked, 3505.55ms Time] [2021-11-13 18:20:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13207 states. [2021-11-13 18:20:22,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13207 to 9382. [2021-11-13 18:20:22,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9382 states, 8850 states have (on average 1.6694915254237288) internal successors, (14775), 8919 states have internal predecessors, (14775), 368 states have call successors, (368), 97 states have call predecessors, (368), 162 states have return successors, (653), 381 states have call predecessors, (653), 366 states have call successors, (653) [2021-11-13 18:20:22,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9382 states to 9382 states and 15796 transitions. [2021-11-13 18:20:22,996 INFO L78 Accepts]: Start accepts. Automaton has 9382 states and 15796 transitions. Word has length 190 [2021-11-13 18:20:22,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:20:22,996 INFO L470 AbstractCegarLoop]: Abstraction has 9382 states and 15796 transitions. [2021-11-13 18:20:22,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:22,997 INFO L276 IsEmpty]: Start isEmpty. Operand 9382 states and 15796 transitions. [2021-11-13 18:20:23,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:20:23,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:20:23,004 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:20:23,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 18:20:23,005 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:20:23,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:20:23,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1341111804, now seen corresponding path program 1 times [2021-11-13 18:20:23,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:20:23,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546897766] [2021-11-13 18:20:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:20:23,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:20:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:23,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:20:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:23,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:20:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:23,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:20:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:23,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:20:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:23,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:20:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:20:23,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:20:23,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546897766] [2021-11-13 18:20:23,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546897766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:20:23,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:20:23,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:20:23,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379086030] [2021-11-13 18:20:23,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:20:23,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:20:23,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:20:23,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:20:23,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:20:23,244 INFO L87 Difference]: Start difference. First operand 9382 states and 15796 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:29,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:20:29,529 INFO L93 Difference]: Finished difference Result 32128 states and 53471 transitions. [2021-11-13 18:20:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:20:29,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:20:29,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:20:29,613 INFO L225 Difference]: With dead ends: 32128 [2021-11-13 18:20:29,614 INFO L226 Difference]: Without dead ends: 24890 [2021-11-13 18:20:29,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-11-13 18:20:29,639 INFO L933 BasicCegarLoop]: 4984 mSDtfsCounter, 6622 mSDsluCounter, 18150 mSDsCounter, 0 mSdLazyCounter, 3135 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2475.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6658 SdHoareTripleChecker+Valid, 23134 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.05ms SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 3135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2885.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:20:29,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6658 Valid, 23134 Invalid, 3285 Unknown, 0 Unchecked, 62.05ms Time], IncrementalHoareTripleChecker [150 Valid, 3135 Invalid, 0 Unknown, 0 Unchecked, 2885.59ms Time] [2021-11-13 18:20:29,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24890 states. [2021-11-13 18:20:31,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24890 to 17498. [2021-11-13 18:20:31,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17498 states, 16380 states have (on average 1.6572039072039073) internal successors, (27145), 16595 states have internal predecessors, (27145), 712 states have call successors, (712), 193 states have call predecessors, (712), 404 states have return successors, (1797), 741 states have call predecessors, (1797), 710 states have call successors, (1797) [2021-11-13 18:20:31,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17498 states to 17498 states and 29654 transitions. [2021-11-13 18:20:31,326 INFO L78 Accepts]: Start accepts. Automaton has 17498 states and 29654 transitions. Word has length 190 [2021-11-13 18:20:31,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:20:31,326 INFO L470 AbstractCegarLoop]: Abstraction has 17498 states and 29654 transitions. [2021-11-13 18:20:31,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:31,327 INFO L276 IsEmpty]: Start isEmpty. Operand 17498 states and 29654 transitions. [2021-11-13 18:20:31,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:20:31,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:20:31,337 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:20:31,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-13 18:20:31,337 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:20:31,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:20:31,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1726974206, now seen corresponding path program 1 times [2021-11-13 18:20:31,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:20:31,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789925113] [2021-11-13 18:20:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:20:31,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:20:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:31,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:20:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:31,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:20:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:31,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:20:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:31,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:20:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:31,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:20:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:20:31,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:20:31,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789925113] [2021-11-13 18:20:31,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789925113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:20:31,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:20:31,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:20:31,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165057296] [2021-11-13 18:20:31,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:20:31,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:20:31,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:20:31,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:20:31,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:20:31,519 INFO L87 Difference]: Start difference. First operand 17498 states and 29654 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:35,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:20:35,435 INFO L93 Difference]: Finished difference Result 39988 states and 68268 transitions. [2021-11-13 18:20:35,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:20:35,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:20:35,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:20:35,502 INFO L225 Difference]: With dead ends: 39988 [2021-11-13 18:20:35,503 INFO L226 Difference]: Without dead ends: 24632 [2021-11-13 18:20:35,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:20:35,536 INFO L933 BasicCegarLoop]: 4601 mSDtfsCounter, 5142 mSDsluCounter, 16844 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1309.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5163 SdHoareTripleChecker+Valid, 21445 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 67.92ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1541.54ms IncrementalHoareTripleChecker+Time [2021-11-13 18:20:35,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5163 Valid, 21445 Invalid, 1547 Unknown, 0 Unchecked, 67.92ms Time], IncrementalHoareTripleChecker [88 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 1541.54ms Time] [2021-11-13 18:20:35,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24632 states. [2021-11-13 18:20:37,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24632 to 17498. [2021-11-13 18:20:37,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17498 states, 16380 states have (on average 1.655189255189255) internal successors, (27112), 16595 states have internal predecessors, (27112), 712 states have call successors, (712), 193 states have call predecessors, (712), 404 states have return successors, (1797), 741 states have call predecessors, (1797), 710 states have call successors, (1797) [2021-11-13 18:20:37,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17498 states to 17498 states and 29621 transitions. [2021-11-13 18:20:37,435 INFO L78 Accepts]: Start accepts. Automaton has 17498 states and 29621 transitions. Word has length 190 [2021-11-13 18:20:37,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:20:37,436 INFO L470 AbstractCegarLoop]: Abstraction has 17498 states and 29621 transitions. [2021-11-13 18:20:37,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:37,436 INFO L276 IsEmpty]: Start isEmpty. Operand 17498 states and 29621 transitions. [2021-11-13 18:20:37,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:20:37,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:20:37,446 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:20:37,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-13 18:20:37,446 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:20:37,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:20:37,447 INFO L85 PathProgramCache]: Analyzing trace with hash -636867456, now seen corresponding path program 1 times [2021-11-13 18:20:37,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:20:37,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258110586] [2021-11-13 18:20:37,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:20:37,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:20:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:37,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:20:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:37,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:20:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:37,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:20:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:37,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:20:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:37,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:20:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:20:37,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:20:37,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258110586] [2021-11-13 18:20:37,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258110586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:20:37,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:20:37,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:20:37,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665025435] [2021-11-13 18:20:37,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:20:37,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:20:37,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:20:37,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:20:37,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:20:37,607 INFO L87 Difference]: Start difference. First operand 17498 states and 29621 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:41,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:20:41,653 INFO L93 Difference]: Finished difference Result 39745 states and 67684 transitions. [2021-11-13 18:20:41,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:20:41,654 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:20:41,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:20:41,708 INFO L225 Difference]: With dead ends: 39745 [2021-11-13 18:20:41,708 INFO L226 Difference]: Without dead ends: 24389 [2021-11-13 18:20:41,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:20:41,740 INFO L933 BasicCegarLoop]: 4597 mSDtfsCounter, 5140 mSDsluCounter, 16844 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1456.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5161 SdHoareTripleChecker+Valid, 21441 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 75.22ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1662.73ms IncrementalHoareTripleChecker+Time [2021-11-13 18:20:41,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5161 Valid, 21441 Invalid, 1535 Unknown, 0 Unchecked, 75.22ms Time], IncrementalHoareTripleChecker [88 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 1662.73ms Time] [2021-11-13 18:20:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24389 states. [2021-11-13 18:20:43,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24389 to 17498. [2021-11-13 18:20:43,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17498 states, 16380 states have (on average 1.653174603174603) internal successors, (27079), 16595 states have internal predecessors, (27079), 712 states have call successors, (712), 193 states have call predecessors, (712), 404 states have return successors, (1797), 741 states have call predecessors, (1797), 710 states have call successors, (1797) [2021-11-13 18:20:43,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17498 states to 17498 states and 29588 transitions. [2021-11-13 18:20:43,231 INFO L78 Accepts]: Start accepts. Automaton has 17498 states and 29588 transitions. Word has length 190 [2021-11-13 18:20:43,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:20:43,231 INFO L470 AbstractCegarLoop]: Abstraction has 17498 states and 29588 transitions. [2021-11-13 18:20:43,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:43,231 INFO L276 IsEmpty]: Start isEmpty. Operand 17498 states and 29588 transitions. [2021-11-13 18:20:43,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:20:43,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:20:43,241 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:20:43,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-13 18:20:43,242 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:20:43,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:20:43,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1960046402, now seen corresponding path program 1 times [2021-11-13 18:20:43,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:20:43,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090880358] [2021-11-13 18:20:43,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:20:43,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:20:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:43,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:20:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:43,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:20:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:43,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:20:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:43,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:20:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:43,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:20:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:43,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:20:43,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:20:43,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090880358] [2021-11-13 18:20:43,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090880358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:20:43,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:20:43,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:20:43,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913200677] [2021-11-13 18:20:43,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:20:43,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:20:43,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:20:43,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:20:43,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:20:43,421 INFO L87 Difference]: Start difference. First operand 17498 states and 29588 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:47,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:20:47,702 INFO L93 Difference]: Finished difference Result 39502 states and 67100 transitions. [2021-11-13 18:20:47,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:20:47,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:20:47,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:20:47,761 INFO L225 Difference]: With dead ends: 39502 [2021-11-13 18:20:47,761 INFO L226 Difference]: Without dead ends: 24146 [2021-11-13 18:20:47,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:20:47,793 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 5138 mSDsluCounter, 16844 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1508.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5159 SdHoareTripleChecker+Valid, 21437 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 69.56ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1704.56ms IncrementalHoareTripleChecker+Time [2021-11-13 18:20:47,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5159 Valid, 21437 Invalid, 1523 Unknown, 0 Unchecked, 69.56ms Time], IncrementalHoareTripleChecker [88 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 1704.56ms Time] [2021-11-13 18:20:47,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24146 states. [2021-11-13 18:20:49,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24146 to 17498. [2021-11-13 18:20:49,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17498 states, 16380 states have (on average 1.651159951159951) internal successors, (27046), 16595 states have internal predecessors, (27046), 712 states have call successors, (712), 193 states have call predecessors, (712), 404 states have return successors, (1797), 741 states have call predecessors, (1797), 710 states have call successors, (1797) [2021-11-13 18:20:49,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17498 states to 17498 states and 29555 transitions. [2021-11-13 18:20:49,560 INFO L78 Accepts]: Start accepts. Automaton has 17498 states and 29555 transitions. Word has length 190 [2021-11-13 18:20:49,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:20:49,561 INFO L470 AbstractCegarLoop]: Abstraction has 17498 states and 29555 transitions. [2021-11-13 18:20:49,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:49,561 INFO L276 IsEmpty]: Start isEmpty. Operand 17498 states and 29555 transitions. [2021-11-13 18:20:49,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:20:49,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:20:49,571 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:20:49,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-13 18:20:49,571 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:20:49,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:20:49,572 INFO L85 PathProgramCache]: Analyzing trace with hash -63066944, now seen corresponding path program 1 times [2021-11-13 18:20:49,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:20:49,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619237950] [2021-11-13 18:20:49,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:20:49,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:20:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:49,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:20:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:49,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:20:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:49,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:20:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:49,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:20:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:49,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:20:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:49,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:20:49,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:20:49,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619237950] [2021-11-13 18:20:49,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619237950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:20:49,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:20:49,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:20:49,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536204326] [2021-11-13 18:20:49,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:20:49,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:20:49,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:20:49,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:20:49,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:20:49,766 INFO L87 Difference]: Start difference. First operand 17498 states and 29555 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:20:59,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:20:59,024 INFO L93 Difference]: Finished difference Result 62131 states and 105351 transitions. [2021-11-13 18:20:59,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:20:59,035 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:20:59,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:20:59,152 INFO L225 Difference]: With dead ends: 62131 [2021-11-13 18:20:59,152 INFO L226 Difference]: Without dead ends: 46777 [2021-11-13 18:20:59,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-11-13 18:20:59,188 INFO L933 BasicCegarLoop]: 5038 mSDtfsCounter, 6162 mSDsluCounter, 18142 mSDsCounter, 0 mSdLazyCounter, 3361 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2525.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6182 SdHoareTripleChecker+Valid, 23180 SdHoareTripleChecker+Invalid, 3507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.75ms SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 3361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2934.60ms IncrementalHoareTripleChecker+Time [2021-11-13 18:20:59,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6182 Valid, 23180 Invalid, 3507 Unknown, 0 Unchecked, 62.75ms Time], IncrementalHoareTripleChecker [146 Valid, 3361 Invalid, 0 Unknown, 0 Unchecked, 2934.60ms Time] [2021-11-13 18:20:59,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46777 states. [2021-11-13 18:21:02,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46777 to 34414. [2021-11-13 18:21:02,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34414 states, 31978 states have (on average 1.6455062855713303) internal successors, (52620), 32647 states have internal predecessors, (52620), 1384 states have call successors, (1384), 385 states have call predecessors, (1384), 1050 states have return successors, (5605), 1445 states have call predecessors, (5605), 1382 states have call successors, (5605) [2021-11-13 18:21:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34414 states to 34414 states and 59609 transitions. [2021-11-13 18:21:03,132 INFO L78 Accepts]: Start accepts. Automaton has 34414 states and 59609 transitions. Word has length 190 [2021-11-13 18:21:03,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:21:03,132 INFO L470 AbstractCegarLoop]: Abstraction has 34414 states and 59609 transitions. [2021-11-13 18:21:03,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:21:03,133 INFO L276 IsEmpty]: Start isEmpty. Operand 34414 states and 59609 transitions. [2021-11-13 18:21:03,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:21:03,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:21:03,151 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:21:03,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-13 18:21:03,152 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:21:03,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:21:03,153 INFO L85 PathProgramCache]: Analyzing trace with hash 275220606, now seen corresponding path program 1 times [2021-11-13 18:21:03,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:21:03,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445881890] [2021-11-13 18:21:03,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:21:03,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:21:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:03,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:21:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:03,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:21:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:03,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:21:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:03,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:21:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:03,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:21:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:21:03,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:21:03,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445881890] [2021-11-13 18:21:03,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445881890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:21:03,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:21:03,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:21:03,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260305573] [2021-11-13 18:21:03,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:21:03,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:21:03,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:21:03,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:21:03,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:21:03,334 INFO L87 Difference]: Start difference. First operand 34414 states and 59609 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:21:10,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:21:10,029 INFO L93 Difference]: Finished difference Result 80468 states and 141216 transitions. [2021-11-13 18:21:10,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:21:10,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:21:10,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:21:10,266 INFO L225 Difference]: With dead ends: 80468 [2021-11-13 18:21:10,266 INFO L226 Difference]: Without dead ends: 48196 [2021-11-13 18:21:10,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:21:10,314 INFO L933 BasicCegarLoop]: 4586 mSDtfsCounter, 5137 mSDsluCounter, 16844 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1256.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5158 SdHoareTripleChecker+Valid, 21430 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 66.16ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1439.24ms IncrementalHoareTripleChecker+Time [2021-11-13 18:21:10,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5158 Valid, 21430 Invalid, 1504 Unknown, 0 Unchecked, 66.16ms Time], IncrementalHoareTripleChecker [88 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 1439.24ms Time] [2021-11-13 18:21:10,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48196 states. [2021-11-13 18:21:13,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48196 to 34414. [2021-11-13 18:21:13,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34414 states, 31978 states have (on average 1.6434736381262118) internal successors, (52555), 32647 states have internal predecessors, (52555), 1384 states have call successors, (1384), 385 states have call predecessors, (1384), 1050 states have return successors, (5605), 1445 states have call predecessors, (5605), 1382 states have call successors, (5605) [2021-11-13 18:21:13,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34414 states to 34414 states and 59544 transitions. [2021-11-13 18:21:13,640 INFO L78 Accepts]: Start accepts. Automaton has 34414 states and 59544 transitions. Word has length 190 [2021-11-13 18:21:13,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:21:13,640 INFO L470 AbstractCegarLoop]: Abstraction has 34414 states and 59544 transitions. [2021-11-13 18:21:13,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:21:13,640 INFO L276 IsEmpty]: Start isEmpty. Operand 34414 states and 59544 transitions. [2021-11-13 18:21:13,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:21:13,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:21:13,661 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:21:13,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-13 18:21:13,662 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:21:13,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:21:13,663 INFO L85 PathProgramCache]: Analyzing trace with hash 701775104, now seen corresponding path program 1 times [2021-11-13 18:21:13,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:21:13,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126904232] [2021-11-13 18:21:13,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:21:13,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:21:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:13,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:21:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:13,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:21:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:13,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:21:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:13,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:21:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:13,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:21:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:21:13,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:21:13,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126904232] [2021-11-13 18:21:13,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126904232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:21:13,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:21:13,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:21:13,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020651981] [2021-11-13 18:21:13,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:21:13,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:21:13,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:21:13,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:21:13,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:21:13,841 INFO L87 Difference]: Start difference. First operand 34414 states and 59544 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:21:20,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:21:20,882 INFO L93 Difference]: Finished difference Result 79739 states and 139564 transitions. [2021-11-13 18:21:20,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:21:20,882 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-11-13 18:21:20,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:21:20,997 INFO L225 Difference]: With dead ends: 79739 [2021-11-13 18:21:20,997 INFO L226 Difference]: Without dead ends: 47467 [2021-11-13 18:21:21,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:21:21,070 INFO L933 BasicCegarLoop]: 4582 mSDtfsCounter, 5135 mSDsluCounter, 16844 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1495.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5156 SdHoareTripleChecker+Valid, 21426 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 67.56ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1679.99ms IncrementalHoareTripleChecker+Time [2021-11-13 18:21:21,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5156 Valid, 21426 Invalid, 1492 Unknown, 0 Unchecked, 67.56ms Time], IncrementalHoareTripleChecker [88 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 1679.99ms Time] [2021-11-13 18:21:21,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47467 states. [2021-11-13 18:21:24,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47467 to 34414. [2021-11-13 18:21:24,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34414 states, 31978 states have (on average 1.6414409906810932) internal successors, (52490), 32647 states have internal predecessors, (52490), 1384 states have call successors, (1384), 385 states have call predecessors, (1384), 1050 states have return successors, (5605), 1445 states have call predecessors, (5605), 1382 states have call successors, (5605) [2021-11-13 18:21:24,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34414 states to 34414 states and 59479 transitions. [2021-11-13 18:21:24,584 INFO L78 Accepts]: Start accepts. Automaton has 34414 states and 59479 transitions. Word has length 190 [2021-11-13 18:21:24,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:21:24,585 INFO L470 AbstractCegarLoop]: Abstraction has 34414 states and 59479 transitions. [2021-11-13 18:21:24,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:21:24,585 INFO L276 IsEmpty]: Start isEmpty. Operand 34414 states and 59479 transitions. [2021-11-13 18:21:24,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:21:24,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:21:24,594 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:21:24,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-13 18:21:24,594 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:21:24,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:21:24,594 INFO L85 PathProgramCache]: Analyzing trace with hash 161345598, now seen corresponding path program 1 times [2021-11-13 18:21:24,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:21:24,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372127210] [2021-11-13 18:21:24,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:21:24,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:21:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:24,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:21:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:24,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:21:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:24,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:21:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:24,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 18:21:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:24,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:21:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:24,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:21:24,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:21:24,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372127210] [2021-11-13 18:21:24,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372127210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:21:24,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:21:24,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:21:24,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496169155] [2021-11-13 18:21:24,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:21:24,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:21:24,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:21:24,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:21:24,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:21:24,764 INFO L87 Difference]: Start difference. First operand 34414 states and 59479 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)