./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d698490d-68eb-4f93-a8ea-0760bcf7fde1/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d698490d-68eb-4f93-a8ea-0760bcf7fde1/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d698490d-68eb-4f93-a8ea-0760bcf7fde1/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d698490d-68eb-4f93-a8ea-0760bcf7fde1/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d698490d-68eb-4f93-a8ea-0760bcf7fde1/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d698490d-68eb-4f93-a8ea-0760bcf7fde1/bin/uautomizer-wIGwrQj20G --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 37e549e4fa4b7b530556a3e37b4e2d4806fbb92dab5da0115a6c327b48fa0370 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:46:39,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:46:39,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:46:40,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:46:40,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:46:40,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:46:40,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:46:40,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:46:40,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:46:40,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:46:40,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:46:40,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:46:40,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:46:40,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:46:40,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:46:40,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:46:40,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:46:40,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:46:40,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:46:40,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:46:40,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:46:40,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:46:40,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:46:40,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:46:40,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:46:40,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:46:40,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:46:40,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:46:40,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:46:40,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:46:40,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:46:40,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:46:40,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:46:40,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:46:40,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:46:40,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:46:40,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:46:40,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:46:40,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:46:40,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:46:40,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:46:40,081 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d698490d-68eb-4f93-a8ea-0760bcf7fde1/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:46:40,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:46:40,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:46:40,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:46:40,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:46:40,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:46:40,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:46:40,121 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:46:40,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:46:40,122 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:46:40,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:46:40,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:46:40,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:46:40,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:46:40,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:46:40,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:46:40,124 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:46:40,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:46:40,124 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:46:40,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:46:40,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:46:40,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:46:40,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:46:40,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:46:40,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:46:40,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:46:40,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:46:40,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:46:40,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:46:40,128 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:46:40,128 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:46:40,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:46:40,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:46:40,129 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_d698490d-68eb-4f93-a8ea-0760bcf7fde1/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d698490d-68eb-4f93-a8ea-0760bcf7fde1/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37e549e4fa4b7b530556a3e37b4e2d4806fbb92dab5da0115a6c327b48fa0370 [2021-11-23 13:46:40,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:46:40,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:46:40,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:46:40,462 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:46:40,463 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:46:40,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d698490d-68eb-4f93-a8ea-0760bcf7fde1/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-11-23 13:46:40,541 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d698490d-68eb-4f93-a8ea-0760bcf7fde1/bin/uautomizer-wIGwrQj20G/data/7347dc98c/b15f0200d08649239500b63f8eeac5ca/FLAGc1595fb15 [2021-11-23 13:46:41,283 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:46:41,287 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d698490d-68eb-4f93-a8ea-0760bcf7fde1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-11-23 13:46:41,317 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d698490d-68eb-4f93-a8ea-0760bcf7fde1/bin/uautomizer-wIGwrQj20G/data/7347dc98c/b15f0200d08649239500b63f8eeac5ca/FLAGc1595fb15 [2021-11-23 13:46:41,465 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d698490d-68eb-4f93-a8ea-0760bcf7fde1/bin/uautomizer-wIGwrQj20G/data/7347dc98c/b15f0200d08649239500b63f8eeac5ca [2021-11-23 13:46:41,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:46:41,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:46:41,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:46:41,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:46:41,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:46:41,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:46:41" (1/1) ... [2021-11-23 13:46:41,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e846bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:41, skipping insertion in model container [2021-11-23 13:46:41,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:46:41" (1/1) ... [2021-11-23 13:46:41,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:46:41,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:46:42,135 WARN L230 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_d698490d-68eb-4f93-a8ea-0760bcf7fde1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13490,13503] [2021-11-23 13:46:42,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:46:42,263 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:46:42,416 WARN L230 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_d698490d-68eb-4f93-a8ea-0760bcf7fde1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13490,13503] [2021-11-23 13:46:42,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:46:42,520 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:46:42,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:42 WrapperNode [2021-11-23 13:46:42,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:46:42,522 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:46:42,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:46:42,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:46:42,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:42" (1/1) ... [2021-11-23 13:46:42,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:42" (1/1) ... [2021-11-23 13:46:42,667 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1333 [2021-11-23 13:46:42,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:46:42,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:46:42,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:46:42,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:46:42,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:42" (1/1) ... [2021-11-23 13:46:42,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:42" (1/1) ... [2021-11-23 13:46:42,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:42" (1/1) ... [2021-11-23 13:46:42,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:42" (1/1) ... [2021-11-23 13:46:42,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:42" (1/1) ... [2021-11-23 13:46:42,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:42" (1/1) ... [2021-11-23 13:46:42,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:42" (1/1) ... [2021-11-23 13:46:42,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:46:42,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:46:42,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:46:42,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:46:42,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:42" (1/1) ... [2021-11-23 13:46:42,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:46:42,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d698490d-68eb-4f93-a8ea-0760bcf7fde1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:42,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d698490d-68eb-4f93-a8ea-0760bcf7fde1/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:46:42,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d698490d-68eb-4f93-a8ea-0760bcf7fde1/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:46:42,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:46:42,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:46:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:46:42,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:46:43,156 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:46:43,158 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:46:44,651 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:46:44,664 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:46:44,673 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 13:46:44,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:46:44 BoogieIcfgContainer [2021-11-23 13:46:44,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:46:44,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:46:44,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:46:44,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:46:44,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:46:41" (1/3) ... [2021-11-23 13:46:44,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1265714f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:46:44, skipping insertion in model container [2021-11-23 13:46:44,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:42" (2/3) ... [2021-11-23 13:46:44,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1265714f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:46:44, skipping insertion in model container [2021-11-23 13:46:44,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:46:44" (3/3) ... [2021-11-23 13:46:44,699 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-11-23 13:46:44,704 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:46:44,704 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 13:46:44,815 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:46:44,821 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 [2021-11-23 13:46:44,822 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 13:46:44,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 338 states, 336 states have (on average 1.7797619047619047) internal successors, (598), 337 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:44,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 13:46:44,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:44,879 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] [2021-11-23 13:46:44,880 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:44,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:44,887 INFO L85 PathProgramCache]: Analyzing trace with hash -139604630, now seen corresponding path program 1 times [2021-11-23 13:46:44,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:44,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066231811] [2021-11-23 13:46:44,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:44,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:45,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:45,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066231811] [2021-11-23 13:46:45,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066231811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:45,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:45,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:46:45,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598899684] [2021-11-23 13:46:45,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:45,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:46:45,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:45,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:46:45,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:46:45,668 INFO L87 Difference]: Start difference. First operand has 338 states, 336 states have (on average 1.7797619047619047) internal successors, (598), 337 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:45,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:45,910 INFO L93 Difference]: Finished difference Result 640 states and 1100 transitions. [2021-11-23 13:46:45,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:46:45,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-23 13:46:45,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:45,945 INFO L225 Difference]: With dead ends: 640 [2021-11-23 13:46:45,946 INFO L226 Difference]: Without dead ends: 477 [2021-11-23 13:46:45,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:46:45,958 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 254 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:45,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 1122 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:46:45,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-11-23 13:46:46,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 474. [2021-11-23 13:46:46,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 1.668076109936575) internal successors, (789), 473 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:46,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 789 transitions. [2021-11-23 13:46:46,064 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 789 transitions. Word has length 106 [2021-11-23 13:46:46,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:46,065 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 789 transitions. [2021-11-23 13:46:46,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:46,066 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 789 transitions. [2021-11-23 13:46:46,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 13:46:46,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:46,077 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] [2021-11-23 13:46:46,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:46:46,078 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:46,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:46,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1315500352, now seen corresponding path program 1 times [2021-11-23 13:46:46,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:46,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749201880] [2021-11-23 13:46:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:46,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:46,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:46,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749201880] [2021-11-23 13:46:46,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749201880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:46,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:46,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:46:46,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745220806] [2021-11-23 13:46:46,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:46,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:46:46,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:46,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:46:46,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:46:46,348 INFO L87 Difference]: Start difference. First operand 474 states and 789 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:46,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:46,420 INFO L93 Difference]: Finished difference Result 1040 states and 1729 transitions. [2021-11-23 13:46:46,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:46:46,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-23 13:46:46,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:46,427 INFO L225 Difference]: With dead ends: 1040 [2021-11-23 13:46:46,427 INFO L226 Difference]: Without dead ends: 747 [2021-11-23 13:46:46,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:46:46,432 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 229 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:46,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 1084 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:46:46,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-11-23 13:46:46,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 743. [2021-11-23 13:46:46,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 742 states have (on average 1.6630727762803235) internal successors, (1234), 742 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:46,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1234 transitions. [2021-11-23 13:46:46,511 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1234 transitions. Word has length 109 [2021-11-23 13:46:46,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:46,516 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 1234 transitions. [2021-11-23 13:46:46,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:46,544 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1234 transitions. [2021-11-23 13:46:46,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-23 13:46:46,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:46,553 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] [2021-11-23 13:46:46,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:46:46,554 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:46,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:46,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1899343221, now seen corresponding path program 1 times [2021-11-23 13:46:46,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:46,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532867093] [2021-11-23 13:46:46,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:46,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:46,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:46,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:46,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532867093] [2021-11-23 13:46:46,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532867093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:46,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:46,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:46:46,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148537333] [2021-11-23 13:46:46,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:46,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:46:46,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:46,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:46:46,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:46:46,676 INFO L87 Difference]: Start difference. First operand 743 states and 1234 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:46,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:46,781 INFO L93 Difference]: Finished difference Result 1827 states and 3028 transitions. [2021-11-23 13:46:46,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:46:46,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-23 13:46:46,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:46,796 INFO L225 Difference]: With dead ends: 1827 [2021-11-23 13:46:46,796 INFO L226 Difference]: Without dead ends: 1265 [2021-11-23 13:46:46,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:46:46,813 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 222 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:46,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 1085 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:46:46,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2021-11-23 13:46:46,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1259. [2021-11-23 13:46:46,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1258 states have (on average 1.6550079491255962) internal successors, (2082), 1258 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:46,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 2082 transitions. [2021-11-23 13:46:46,899 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 2082 transitions. Word has length 112 [2021-11-23 13:46:46,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:46,903 INFO L470 AbstractCegarLoop]: Abstraction has 1259 states and 2082 transitions. [2021-11-23 13:46:46,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:46,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 2082 transitions. [2021-11-23 13:46:46,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 13:46:46,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:46,907 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] [2021-11-23 13:46:46,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:46:46,909 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:46,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:46,912 INFO L85 PathProgramCache]: Analyzing trace with hash -634176207, now seen corresponding path program 1 times [2021-11-23 13:46:46,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:46,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38933052] [2021-11-23 13:46:46,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:46,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:47,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:47,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:47,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38933052] [2021-11-23 13:46:47,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38933052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:47,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:47,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:46:47,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080070428] [2021-11-23 13:46:47,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:47,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:46:47,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:47,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:46:47,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:46:47,100 INFO L87 Difference]: Start difference. First operand 1259 states and 2082 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:47,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:47,290 INFO L93 Difference]: Finished difference Result 3335 states and 5500 transitions. [2021-11-23 13:46:47,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:46:47,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 13:46:47,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:47,318 INFO L225 Difference]: With dead ends: 3335 [2021-11-23 13:46:47,318 INFO L226 Difference]: Without dead ends: 2257 [2021-11-23 13:46:47,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:46:47,333 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 215 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:47,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 1086 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:46:47,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2021-11-23 13:46:47,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2247. [2021-11-23 13:46:47,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.6447016918967052) internal successors, (3694), 2246 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:47,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3694 transitions. [2021-11-23 13:46:47,483 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3694 transitions. Word has length 115 [2021-11-23 13:46:47,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:47,483 INFO L470 AbstractCegarLoop]: Abstraction has 2247 states and 3694 transitions. [2021-11-23 13:46:47,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:47,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3694 transitions. [2021-11-23 13:46:47,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-23 13:46:47,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:47,488 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] [2021-11-23 13:46:47,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:46:47,489 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:47,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:47,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1842996660, now seen corresponding path program 1 times [2021-11-23 13:46:47,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:47,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028563637] [2021-11-23 13:46:47,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:47,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:47,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:47,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028563637] [2021-11-23 13:46:47,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028563637] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:47,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:47,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:46:47,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354109500] [2021-11-23 13:46:47,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:47,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:46:47,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:47,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:46:47,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:46:47,725 INFO L87 Difference]: Start difference. First operand 2247 states and 3694 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:48,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:48,729 INFO L93 Difference]: Finished difference Result 11827 states and 19558 transitions. [2021-11-23 13:46:48,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:46:48,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-23 13:46:48,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:48,808 INFO L225 Difference]: With dead ends: 11827 [2021-11-23 13:46:48,808 INFO L226 Difference]: Without dead ends: 9761 [2021-11-23 13:46:48,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:46:48,819 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 2216 mSDsluCounter, 4159 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 4710 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:48,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2216 Valid, 4710 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:46:48,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2021-11-23 13:46:49,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 4177. [2021-11-23 13:46:49,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4177 states, 4176 states have (on average 1.6429597701149425) internal successors, (6861), 4176 states have internal predecessors, (6861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:49,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4177 states to 4177 states and 6861 transitions. [2021-11-23 13:46:49,330 INFO L78 Accepts]: Start accepts. Automaton has 4177 states and 6861 transitions. Word has length 118 [2021-11-23 13:46:49,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:49,331 INFO L470 AbstractCegarLoop]: Abstraction has 4177 states and 6861 transitions. [2021-11-23 13:46:49,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:49,332 INFO L276 IsEmpty]: Start isEmpty. Operand 4177 states and 6861 transitions. [2021-11-23 13:46:49,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-23 13:46:49,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:49,346 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] [2021-11-23 13:46:49,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:46:49,347 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:49,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:49,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1365383642, now seen corresponding path program 1 times [2021-11-23 13:46:49,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:49,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195872070] [2021-11-23 13:46:49,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:49,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:49,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:49,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195872070] [2021-11-23 13:46:49,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195872070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:49,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:49,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:46:49,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903979075] [2021-11-23 13:46:49,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:49,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:46:49,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:49,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:46:49,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:46:49,478 INFO L87 Difference]: Start difference. First operand 4177 states and 6861 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:50,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:50,219 INFO L93 Difference]: Finished difference Result 12275 states and 20249 transitions. [2021-11-23 13:46:50,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:46:50,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-23 13:46:50,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:50,299 INFO L225 Difference]: With dead ends: 12275 [2021-11-23 13:46:50,299 INFO L226 Difference]: Without dead ends: 8279 [2021-11-23 13:46:50,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:46:50,310 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 754 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:50,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 1677 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:46:50,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8279 states. [2021-11-23 13:46:50,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8279 to 6211. [2021-11-23 13:46:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6211 states, 6210 states have (on average 1.644766505636071) internal successors, (10214), 6210 states have internal predecessors, (10214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6211 states to 6211 states and 10214 transitions. [2021-11-23 13:46:50,949 INFO L78 Accepts]: Start accepts. Automaton has 6211 states and 10214 transitions. Word has length 119 [2021-11-23 13:46:50,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:50,950 INFO L470 AbstractCegarLoop]: Abstraction has 6211 states and 10214 transitions. [2021-11-23 13:46:50,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:50,950 INFO L276 IsEmpty]: Start isEmpty. Operand 6211 states and 10214 transitions. [2021-11-23 13:46:50,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-23 13:46:50,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:50,956 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] [2021-11-23 13:46:50,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:46:50,956 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:50,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:50,957 INFO L85 PathProgramCache]: Analyzing trace with hash 560276051, now seen corresponding path program 1 times [2021-11-23 13:46:50,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:50,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959773871] [2021-11-23 13:46:50,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:50,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:51,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:51,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:51,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959773871] [2021-11-23 13:46:51,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959773871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:51,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:51,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:46:51,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746763038] [2021-11-23 13:46:51,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:51,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:46:51,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:51,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:46:51,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:46:51,053 INFO L87 Difference]: Start difference. First operand 6211 states and 10214 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:52,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:52,152 INFO L93 Difference]: Finished difference Result 18273 states and 30109 transitions. [2021-11-23 13:46:52,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:46:52,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-11-23 13:46:52,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:52,210 INFO L225 Difference]: With dead ends: 18273 [2021-11-23 13:46:52,210 INFO L226 Difference]: Without dead ends: 12243 [2021-11-23 13:46:52,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:46:52,228 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 752 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:52,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [752 Valid, 1861 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:46:52,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12243 states. [2021-11-23 13:46:53,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12243 to 9203. [2021-11-23 13:46:53,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9203 states, 9202 states have (on average 1.6426863725277114) internal successors, (15116), 9202 states have internal predecessors, (15116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:53,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9203 states to 9203 states and 15116 transitions. [2021-11-23 13:46:53,131 INFO L78 Accepts]: Start accepts. Automaton has 9203 states and 15116 transitions. Word has length 120 [2021-11-23 13:46:53,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:53,132 INFO L470 AbstractCegarLoop]: Abstraction has 9203 states and 15116 transitions. [2021-11-23 13:46:53,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:53,133 INFO L276 IsEmpty]: Start isEmpty. Operand 9203 states and 15116 transitions. [2021-11-23 13:46:53,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 13:46:53,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:53,140 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] [2021-11-23 13:46:53,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:46:53,141 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:53,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:53,143 INFO L85 PathProgramCache]: Analyzing trace with hash 130742413, now seen corresponding path program 1 times [2021-11-23 13:46:53,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:53,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084274362] [2021-11-23 13:46:53,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:53,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:53,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:53,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084274362] [2021-11-23 13:46:53,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084274362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:53,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:53,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:46:53,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639412267] [2021-11-23 13:46:53,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:53,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:46:53,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:46:53,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:46:53,279 INFO L87 Difference]: Start difference. First operand 9203 states and 15116 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:54,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:54,518 INFO L93 Difference]: Finished difference Result 27097 states and 44597 transitions. [2021-11-23 13:46:54,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:46:54,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 13:46:54,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:54,585 INFO L225 Difference]: With dead ends: 27097 [2021-11-23 13:46:54,586 INFO L226 Difference]: Without dead ends: 18075 [2021-11-23 13:46:54,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:46:54,605 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 750 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:54,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 1864 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:46:54,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18075 states. [2021-11-23 13:46:55,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18075 to 13605. [2021-11-23 13:46:55,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13605 states, 13604 states have (on average 1.6406939135548368) internal successors, (22320), 13604 states have internal predecessors, (22320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:56,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13605 states to 13605 states and 22320 transitions. [2021-11-23 13:46:56,004 INFO L78 Accepts]: Start accepts. Automaton has 13605 states and 22320 transitions. Word has length 121 [2021-11-23 13:46:56,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:56,007 INFO L470 AbstractCegarLoop]: Abstraction has 13605 states and 22320 transitions. [2021-11-23 13:46:56,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:56,008 INFO L276 IsEmpty]: Start isEmpty. Operand 13605 states and 22320 transitions. [2021-11-23 13:46:56,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-23 13:46:56,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:56,015 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] [2021-11-23 13:46:56,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 13:46:56,016 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:56,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:56,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1601966021, now seen corresponding path program 1 times [2021-11-23 13:46:56,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:56,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050269174] [2021-11-23 13:46:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:56,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:56,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:56,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050269174] [2021-11-23 13:46:56,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050269174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:56,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:56,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:46:56,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776737713] [2021-11-23 13:46:56,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:56,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:46:56,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:56,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:46:56,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:46:56,128 INFO L87 Difference]: Start difference. First operand 13605 states and 22320 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:57,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:57,217 INFO L93 Difference]: Finished difference Result 30193 states and 49567 transitions. [2021-11-23 13:46:57,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:46:57,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-23 13:46:57,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:57,268 INFO L225 Difference]: With dead ends: 30193 [2021-11-23 13:46:57,268 INFO L226 Difference]: Without dead ends: 20847 [2021-11-23 13:46:57,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:46:57,286 INFO L933 BasicCegarLoop]: 705 mSDtfsCounter, 228 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:57,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 1219 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:46:57,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20847 states. [2021-11-23 13:46:58,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20847 to 20845. [2021-11-23 13:46:58,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20845 states, 20844 states have (on average 1.6359144118211475) internal successors, (34099), 20844 states have internal predecessors, (34099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:58,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20845 states to 20845 states and 34099 transitions. [2021-11-23 13:46:58,491 INFO L78 Accepts]: Start accepts. Automaton has 20845 states and 34099 transitions. Word has length 122 [2021-11-23 13:46:58,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:58,491 INFO L470 AbstractCegarLoop]: Abstraction has 20845 states and 34099 transitions. [2021-11-23 13:46:58,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:58,492 INFO L276 IsEmpty]: Start isEmpty. Operand 20845 states and 34099 transitions. [2021-11-23 13:46:58,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-23 13:46:58,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:58,496 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] [2021-11-23 13:46:58,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 13:46:58,497 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:58,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:58,498 INFO L85 PathProgramCache]: Analyzing trace with hash 654906329, now seen corresponding path program 1 times [2021-11-23 13:46:58,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:58,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512824713] [2021-11-23 13:46:58,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:58,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:58,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:58,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:58,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512824713] [2021-11-23 13:46:58,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512824713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:58,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:58,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:46:58,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398964544] [2021-11-23 13:46:58,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:58,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:46:58,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:58,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:46:58,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:46:58,584 INFO L87 Difference]: Start difference. First operand 20845 states and 34099 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:00,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:00,419 INFO L93 Difference]: Finished difference Result 46063 states and 75413 transitions. [2021-11-23 13:47:00,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:47:00,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-23 13:47:00,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:00,546 INFO L225 Difference]: With dead ends: 46063 [2021-11-23 13:47:00,547 INFO L226 Difference]: Without dead ends: 31699 [2021-11-23 13:47:00,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:47:00,577 INFO L933 BasicCegarLoop]: 671 mSDtfsCounter, 221 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:00,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 1186 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:47:00,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31699 states. [2021-11-23 13:47:02,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31699 to 31697. [2021-11-23 13:47:02,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31697 states, 31696 states have (on average 1.6305212014134276) internal successors, (51681), 31696 states have internal predecessors, (51681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:02,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31697 states to 31697 states and 51681 transitions. [2021-11-23 13:47:02,603 INFO L78 Accepts]: Start accepts. Automaton has 31697 states and 51681 transitions. Word has length 122 [2021-11-23 13:47:02,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:02,604 INFO L470 AbstractCegarLoop]: Abstraction has 31697 states and 51681 transitions. [2021-11-23 13:47:02,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:02,605 INFO L276 IsEmpty]: Start isEmpty. Operand 31697 states and 51681 transitions. [2021-11-23 13:47:02,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-23 13:47:02,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:02,608 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] [2021-11-23 13:47:02,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 13:47:02,608 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:02,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:02,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1423805753, now seen corresponding path program 1 times [2021-11-23 13:47:02,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:02,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224997570] [2021-11-23 13:47:02,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:02,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:02,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:47:02,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:02,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224997570] [2021-11-23 13:47:02,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224997570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:47:02,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:47:02,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:47:02,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327415135] [2021-11-23 13:47:02,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:47:02,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:47:02,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:02,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:47:02,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:47:02,685 INFO L87 Difference]: Start difference. First operand 31697 states and 51681 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:05,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:05,513 INFO L93 Difference]: Finished difference Result 61873 states and 101007 transitions. [2021-11-23 13:47:05,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:47:05,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-23 13:47:05,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:05,634 INFO L225 Difference]: With dead ends: 61873 [2021-11-23 13:47:05,635 INFO L226 Difference]: Without dead ends: 44427 [2021-11-23 13:47:05,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:47:05,667 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 214 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:05,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 1154 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:47:05,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44427 states. [2021-11-23 13:47:08,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44427 to 44425. [2021-11-23 13:47:08,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44425 states, 44424 states have (on average 1.6254051863857375) internal successors, (72207), 44424 states have internal predecessors, (72207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:08,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44425 states to 44425 states and 72207 transitions. [2021-11-23 13:47:08,379 INFO L78 Accepts]: Start accepts. Automaton has 44425 states and 72207 transitions. Word has length 122 [2021-11-23 13:47:08,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:08,379 INFO L470 AbstractCegarLoop]: Abstraction has 44425 states and 72207 transitions. [2021-11-23 13:47:08,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:08,380 INFO L276 IsEmpty]: Start isEmpty. Operand 44425 states and 72207 transitions. [2021-11-23 13:47:08,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-23 13:47:08,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:08,383 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] [2021-11-23 13:47:08,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 13:47:08,384 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:08,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:08,384 INFO L85 PathProgramCache]: Analyzing trace with hash -295340454, now seen corresponding path program 1 times [2021-11-23 13:47:08,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:08,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128711512] [2021-11-23 13:47:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:08,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:08,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:47:08,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:08,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128711512] [2021-11-23 13:47:08,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128711512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:47:08,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:47:08,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:47:08,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460215094] [2021-11-23 13:47:08,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:47:08,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:47:08,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:08,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:47:08,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:47:08,471 INFO L87 Difference]: Start difference. First operand 44425 states and 72207 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:13,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:13,722 INFO L93 Difference]: Finished difference Result 141581 states and 230498 transitions. [2021-11-23 13:47:13,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:47:13,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-23 13:47:13,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:13,986 INFO L225 Difference]: With dead ends: 141581 [2021-11-23 13:47:13,986 INFO L226 Difference]: Without dead ends: 97557 [2021-11-23 13:47:14,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:47:14,038 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 748 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:14,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 1862 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:47:14,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97557 states. [2021-11-23 13:47:18,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97557 to 70857. [2021-11-23 13:47:18,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70857 states, 70856 states have (on average 1.6216975273794738) internal successors, (114907), 70856 states have internal predecessors, (114907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:19,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70857 states to 70857 states and 114907 transitions. [2021-11-23 13:47:19,112 INFO L78 Accepts]: Start accepts. Automaton has 70857 states and 114907 transitions. Word has length 122 [2021-11-23 13:47:19,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:19,112 INFO L470 AbstractCegarLoop]: Abstraction has 70857 states and 114907 transitions. [2021-11-23 13:47:19,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:19,112 INFO L276 IsEmpty]: Start isEmpty. Operand 70857 states and 114907 transitions. [2021-11-23 13:47:19,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-23 13:47:19,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:19,115 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] [2021-11-23 13:47:19,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 13:47:19,115 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:19,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:19,116 INFO L85 PathProgramCache]: Analyzing trace with hash -845896115, now seen corresponding path program 1 times [2021-11-23 13:47:19,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:19,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238684747] [2021-11-23 13:47:19,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:19,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:47:19,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:19,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238684747] [2021-11-23 13:47:19,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238684747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:47:19,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:47:19,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:47:19,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270283852] [2021-11-23 13:47:19,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:47:19,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:47:19,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:19,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:47:19,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:47:19,188 INFO L87 Difference]: Start difference. First operand 70857 states and 114907 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:25,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:25,593 INFO L93 Difference]: Finished difference Result 156070 states and 254317 transitions. [2021-11-23 13:47:25,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:47:25,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-23 13:47:25,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:25,855 INFO L225 Difference]: With dead ends: 156070 [2021-11-23 13:47:25,856 INFO L226 Difference]: Without dead ends: 105855 [2021-11-23 13:47:25,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:47:25,917 INFO L933 BasicCegarLoop]: 752 mSDtfsCounter, 235 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:25,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 1265 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:47:26,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105855 states. [2021-11-23 13:47:32,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105855 to 105853. [2021-11-23 13:47:32,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105853 states, 105852 states have (on average 1.6188357329101009) internal successors, (171357), 105852 states have internal predecessors, (171357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:32,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105853 states to 105853 states and 171357 transitions. [2021-11-23 13:47:32,739 INFO L78 Accepts]: Start accepts. Automaton has 105853 states and 171357 transitions. Word has length 122 [2021-11-23 13:47:32,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:32,739 INFO L470 AbstractCegarLoop]: Abstraction has 105853 states and 171357 transitions. [2021-11-23 13:47:32,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:32,739 INFO L276 IsEmpty]: Start isEmpty. Operand 105853 states and 171357 transitions. [2021-11-23 13:47:32,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 13:47:32,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:32,741 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] [2021-11-23 13:47:32,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 13:47:32,742 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:32,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:32,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1871640245, now seen corresponding path program 1 times [2021-11-23 13:47:32,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:32,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303102075] [2021-11-23 13:47:32,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:32,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:32,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:47:32,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:32,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303102075] [2021-11-23 13:47:32,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303102075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:47:32,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:47:32,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:47:32,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122545931] [2021-11-23 13:47:32,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:47:32,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:47:32,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:32,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:47:32,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:47:32,943 INFO L87 Difference]: Start difference. First operand 105853 states and 171357 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)