./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9863125d-6bc2-4441-a822-d748dd497728/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9863125d-6bc2-4441-a822-d748dd497728/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9863125d-6bc2-4441-a822-d748dd497728/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9863125d-6bc2-4441-a822-d748dd497728/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9863125d-6bc2-4441-a822-d748dd497728/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9863125d-6bc2-4441-a822-d748dd497728/bin/uautomizer-DrprNOufMa --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 7669776db00f6295c4028d825bdd51b22a88fb95e78feea7b33da1a0ac83f7c3 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:51:05,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:51:05,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:51:06,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:51:06,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:51:06,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:51:06,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:51:06,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:51:06,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:51:06,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:51:06,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:51:06,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:51:06,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:51:06,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:51:06,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:51:06,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:51:06,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:51:06,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:51:06,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:51:06,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:51:06,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:51:06,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:51:06,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:51:06,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:51:06,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:51:06,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:51:06,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:51:06,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:51:06,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:51:06,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:51:06,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:51:06,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:51:06,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:51:06,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:51:06,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:51:06,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:51:06,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:51:06,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:51:06,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:51:06,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:51:06,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:51:06,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9863125d-6bc2-4441-a822-d748dd497728/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:51:06,094 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:51:06,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:51:06,094 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:51:06,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:51:06,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:51:06,095 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:51:06,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:51:06,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:51:06,096 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:51:06,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:51:06,097 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:51:06,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:51:06,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:51:06,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:51:06,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:51:06,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:51:06,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:51:06,098 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:51:06,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:51:06,099 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:51:06,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:51:06,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:51:06,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:51:06,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:51:06,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:51:06,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:51:06,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:51:06,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:51:06,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:51:06,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:51:06,100 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:51:06,100 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:51:06,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:51:06,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:51:06,101 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_9863125d-6bc2-4441-a822-d748dd497728/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9863125d-6bc2-4441-a822-d748dd497728/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7669776db00f6295c4028d825bdd51b22a88fb95e78feea7b33da1a0ac83f7c3 [2021-12-07 00:51:06,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:51:06,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:51:06,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:51:06,295 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:51:06,296 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:51:06,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9863125d-6bc2-4441-a822-d748dd497728/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c [2021-12-07 00:51:06,343 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9863125d-6bc2-4441-a822-d748dd497728/bin/uautomizer-DrprNOufMa/data/125439114/5272aa45f6d942a58287e448225f95ef/FLAG5f2743517 [2021-12-07 00:51:06,735 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:51:06,736 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9863125d-6bc2-4441-a822-d748dd497728/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c [2021-12-07 00:51:06,746 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9863125d-6bc2-4441-a822-d748dd497728/bin/uautomizer-DrprNOufMa/data/125439114/5272aa45f6d942a58287e448225f95ef/FLAG5f2743517 [2021-12-07 00:51:06,754 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9863125d-6bc2-4441-a822-d748dd497728/bin/uautomizer-DrprNOufMa/data/125439114/5272aa45f6d942a58287e448225f95ef [2021-12-07 00:51:06,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:51:06,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:51:06,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:51:06,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:51:06,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:51:06,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:51:06" (1/1) ... [2021-12-07 00:51:06,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@676ecbbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:51:06, skipping insertion in model container [2021-12-07 00:51:06,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:51:06" (1/1) ... [2021-12-07 00:51:06,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:51:06,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:51:07,021 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_9863125d-6bc2-4441-a822-d748dd497728/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c[28368,28381] [2021-12-07 00:51:07,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:51:07,031 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:51:07,088 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_9863125d-6bc2-4441-a822-d748dd497728/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c[28368,28381] [2021-12-07 00:51:07,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:51:07,100 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:51:07,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:51:07 WrapperNode [2021-12-07 00:51:07,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:51:07,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:51:07,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:51:07,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:51:07,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:51:07" (1/1) ... [2021-12-07 00:51:07,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:51:07" (1/1) ... [2021-12-07 00:51:07,160 INFO L137 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 952 [2021-12-07 00:51:07,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:51:07,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:51:07,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:51:07,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:51:07,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:51:07" (1/1) ... [2021-12-07 00:51:07,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:51:07" (1/1) ... [2021-12-07 00:51:07,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:51:07" (1/1) ... [2021-12-07 00:51:07,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:51:07" (1/1) ... [2021-12-07 00:51:07,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:51:07" (1/1) ... [2021-12-07 00:51:07,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:51:07" (1/1) ... [2021-12-07 00:51:07,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:51:07" (1/1) ... [2021-12-07 00:51:07,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:51:07,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:51:07,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:51:07,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:51:07,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:51:07" (1/1) ... [2021-12-07 00:51:07,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:51:07,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9863125d-6bc2-4441-a822-d748dd497728/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:51:07,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9863125d-6bc2-4441-a822-d748dd497728/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:51:07,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9863125d-6bc2-4441-a822-d748dd497728/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:51:07,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:51:07,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:51:07,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:51:07,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:51:07,374 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:51:07,375 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:51:07,977 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:51:07,985 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:51:07,985 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 00:51:07,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:51:07 BoogieIcfgContainer [2021-12-07 00:51:07,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:51:07,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:51:07,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:51:07,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:51:07,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:51:06" (1/3) ... [2021-12-07 00:51:07,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4dea43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:51:07, skipping insertion in model container [2021-12-07 00:51:07,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:51:07" (2/3) ... [2021-12-07 00:51:07,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4dea43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:51:07, skipping insertion in model container [2021-12-07 00:51:07,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:51:07" (3/3) ... [2021-12-07 00:51:07,993 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.UNBOUNDED.pals.c [2021-12-07 00:51:07,997 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:51:07,997 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:51:08,033 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:51:08,038 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 [2021-12-07 00:51:08,038 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:51:08,054 INFO L276 IsEmpty]: Start isEmpty. Operand has 312 states, 310 states have (on average 1.8) internal successors, (558), 311 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:08,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-07 00:51:08,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:08,065 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] [2021-12-07 00:51:08,065 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:08,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:08,069 INFO L85 PathProgramCache]: Analyzing trace with hash 883240596, now seen corresponding path program 1 times [2021-12-07 00:51:08,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:08,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011953887] [2021-12-07 00:51:08,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:08,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:08,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:08,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:08,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011953887] [2021-12-07 00:51:08,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011953887] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:08,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:08,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:51:08,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642402931] [2021-12-07 00:51:08,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:08,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:51:08,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:08,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:51:08,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:51:08,321 INFO L87 Difference]: Start difference. First operand has 312 states, 310 states have (on average 1.8) internal successors, (558), 311 states have internal predecessors, (558), 0 states have call successors, (0), 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 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:08,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:08,354 INFO L93 Difference]: Finished difference Result 429 states and 759 transitions. [2021-12-07 00:51:08,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:51:08,355 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-07 00:51:08,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:08,365 INFO L225 Difference]: With dead ends: 429 [2021-12-07 00:51:08,365 INFO L226 Difference]: Without dead ends: 308 [2021-12-07 00:51:08,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:51:08,370 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:51:08,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:51:08,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-12-07 00:51:08,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-12-07 00:51:08,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.794788273615635) internal successors, (551), 307 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:08,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 551 transitions. [2021-12-07 00:51:08,419 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 551 transitions. Word has length 77 [2021-12-07 00:51:08,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:08,419 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 551 transitions. [2021-12-07 00:51:08,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:08,419 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 551 transitions. [2021-12-07 00:51:08,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-07 00:51:08,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:08,423 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] [2021-12-07 00:51:08,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:51:08,423 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:08,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:08,424 INFO L85 PathProgramCache]: Analyzing trace with hash 749227090, now seen corresponding path program 1 times [2021-12-07 00:51:08,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:08,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380847459] [2021-12-07 00:51:08,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:08,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:08,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:08,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:08,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380847459] [2021-12-07 00:51:08,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380847459] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:08,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:08,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:51:08,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954352994] [2021-12-07 00:51:08,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:08,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:51:08,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:08,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:51:08,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:51:08,542 INFO L87 Difference]: Start difference. First operand 308 states and 551 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:08,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:08,646 INFO L93 Difference]: Finished difference Result 428 states and 752 transitions. [2021-12-07 00:51:08,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:51:08,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-07 00:51:08,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:08,649 INFO L225 Difference]: With dead ends: 428 [2021-12-07 00:51:08,649 INFO L226 Difference]: Without dead ends: 308 [2021-12-07 00:51:08,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:51:08,651 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 3 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2151 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:51:08,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2151 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:51:08,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-12-07 00:51:08,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-12-07 00:51:08,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.6579804560260587) internal successors, (509), 307 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:08,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 509 transitions. [2021-12-07 00:51:08,666 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 509 transitions. Word has length 77 [2021-12-07 00:51:08,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:08,666 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 509 transitions. [2021-12-07 00:51:08,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:08,666 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 509 transitions. [2021-12-07 00:51:08,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-07 00:51:08,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:08,671 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] [2021-12-07 00:51:08,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:51:08,671 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:08,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:08,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1045938854, now seen corresponding path program 1 times [2021-12-07 00:51:08,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:08,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316654818] [2021-12-07 00:51:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:08,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:08,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:08,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316654818] [2021-12-07 00:51:08,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316654818] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:08,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:08,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:51:08,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905947847] [2021-12-07 00:51:08,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:08,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:51:08,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:08,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:51:08,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:51:08,777 INFO L87 Difference]: Start difference. First operand 308 states and 509 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:08,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:08,820 INFO L93 Difference]: Finished difference Result 529 states and 882 transitions. [2021-12-07 00:51:08,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:51:08,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-12-07 00:51:08,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:08,824 INFO L225 Difference]: With dead ends: 529 [2021-12-07 00:51:08,824 INFO L226 Difference]: Without dead ends: 413 [2021-12-07 00:51:08,825 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 [2021-12-07 00:51:08,826 INFO L933 BasicCegarLoop]: 503 mSDtfsCounter, 167 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:51:08,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 959 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:51:08,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-12-07 00:51:08,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 410. [2021-12-07 00:51:08,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.6552567237163813) internal successors, (677), 409 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 677 transitions. [2021-12-07 00:51:08,845 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 677 transitions. Word has length 118 [2021-12-07 00:51:08,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:08,845 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 677 transitions. [2021-12-07 00:51:08,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:08,846 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 677 transitions. [2021-12-07 00:51:08,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-07 00:51:08,849 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:08,849 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] [2021-12-07 00:51:08,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:51:08,849 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:08,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:08,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1919052267, now seen corresponding path program 1 times [2021-12-07 00:51:08,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:08,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493810815] [2021-12-07 00:51:08,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:08,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:08,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:08,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:08,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493810815] [2021-12-07 00:51:08,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493810815] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:08,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:08,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:51:08,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599808742] [2021-12-07 00:51:08,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:08,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:51:08,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:08,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:51:08,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:51:08,922 INFO L87 Difference]: Start difference. First operand 410 states and 677 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:08,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:08,952 INFO L93 Difference]: Finished difference Result 828 states and 1373 transitions. [2021-12-07 00:51:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:51:08,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-12-07 00:51:08,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:08,957 INFO L225 Difference]: With dead ends: 828 [2021-12-07 00:51:08,957 INFO L226 Difference]: Without dead ends: 610 [2021-12-07 00:51:08,959 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 [2021-12-07 00:51:08,960 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 168 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 971 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 [2021-12-07 00:51:08,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 971 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:51:08,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-12-07 00:51:08,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 606. [2021-12-07 00:51:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 605 states have (on average 1.6545454545454545) internal successors, (1001), 605 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:08,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1001 transitions. [2021-12-07 00:51:08,987 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1001 transitions. Word has length 121 [2021-12-07 00:51:08,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:08,987 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 1001 transitions. [2021-12-07 00:51:08,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:08,988 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1001 transitions. [2021-12-07 00:51:08,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-07 00:51:08,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:08,991 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] [2021-12-07 00:51:08,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:51:08,991 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:08,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:08,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1777448074, now seen corresponding path program 1 times [2021-12-07 00:51:08,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:08,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779697467] [2021-12-07 00:51:08,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:08,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:09,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:09,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779697467] [2021-12-07 00:51:09,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779697467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:09,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:09,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:51:09,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290262458] [2021-12-07 00:51:09,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:09,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:51:09,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:09,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:51:09,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:51:09,094 INFO L87 Difference]: Start difference. First operand 606 states and 1001 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:09,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:09,137 INFO L93 Difference]: Finished difference Result 1398 states and 2311 transitions. [2021-12-07 00:51:09,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:51:09,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-12-07 00:51:09,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:09,145 INFO L225 Difference]: With dead ends: 1398 [2021-12-07 00:51:09,145 INFO L226 Difference]: Without dead ends: 984 [2021-12-07 00:51:09,146 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 [2021-12-07 00:51:09,147 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 161 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 972 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 [2021-12-07 00:51:09,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 972 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:51:09,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2021-12-07 00:51:09,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 978. [2021-12-07 00:51:09,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 977 states have (on average 1.646878198567042) internal successors, (1609), 977 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:09,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1609 transitions. [2021-12-07 00:51:09,183 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1609 transitions. Word has length 124 [2021-12-07 00:51:09,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:09,183 INFO L470 AbstractCegarLoop]: Abstraction has 978 states and 1609 transitions. [2021-12-07 00:51:09,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:09,184 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1609 transitions. [2021-12-07 00:51:09,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-07 00:51:09,186 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:09,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:51:09,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 00:51:09,186 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:09,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:09,187 INFO L85 PathProgramCache]: Analyzing trace with hash 78545669, now seen corresponding path program 1 times [2021-12-07 00:51:09,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:09,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273684462] [2021-12-07 00:51:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:09,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:09,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:09,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273684462] [2021-12-07 00:51:09,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273684462] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:09,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:09,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:51:09,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046165512] [2021-12-07 00:51:09,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:09,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:51:09,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:09,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:51:09,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:51:09,263 INFO L87 Difference]: Start difference. First operand 978 states and 1609 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:09,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:09,306 INFO L93 Difference]: Finished difference Result 2478 states and 4067 transitions. [2021-12-07 00:51:09,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:51:09,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-12-07 00:51:09,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:09,314 INFO L225 Difference]: With dead ends: 2478 [2021-12-07 00:51:09,314 INFO L226 Difference]: Without dead ends: 1692 [2021-12-07 00:51:09,316 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 [2021-12-07 00:51:09,317 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 154 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 973 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 [2021-12-07 00:51:09,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 973 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:51:09,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2021-12-07 00:51:09,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1682. [2021-12-07 00:51:09,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1681 states have (on average 1.6329565734681737) internal successors, (2745), 1681 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:09,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2745 transitions. [2021-12-07 00:51:09,372 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2745 transitions. Word has length 127 [2021-12-07 00:51:09,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:09,372 INFO L470 AbstractCegarLoop]: Abstraction has 1682 states and 2745 transitions. [2021-12-07 00:51:09,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:09,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2745 transitions. [2021-12-07 00:51:09,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-07 00:51:09,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:09,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:51:09,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:51:09,376 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:09,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:09,376 INFO L85 PathProgramCache]: Analyzing trace with hash -579836998, now seen corresponding path program 1 times [2021-12-07 00:51:09,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:09,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205180280] [2021-12-07 00:51:09,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:09,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:09,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:09,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:09,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205180280] [2021-12-07 00:51:09,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205180280] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:09,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:09,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:51:09,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225131661] [2021-12-07 00:51:09,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:09,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:51:09,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:09,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:51:09,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:51:09,448 INFO L87 Difference]: Start difference. First operand 1682 states and 2745 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:09,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:09,737 INFO L93 Difference]: Finished difference Result 8642 states and 14261 transitions. [2021-12-07 00:51:09,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:51:09,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-12-07 00:51:09,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:09,767 INFO L225 Difference]: With dead ends: 8642 [2021-12-07 00:51:09,767 INFO L226 Difference]: Without dead ends: 7152 [2021-12-07 00:51:09,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:51:09,771 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 1536 mSDsluCounter, 4056 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 4567 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:51:09,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1536 Valid, 4567 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:51:09,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7152 states. [2021-12-07 00:51:09,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7152 to 3070. [2021-12-07 00:51:09,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3070 states, 3069 states have (on average 1.632453567937439) internal successors, (5010), 3069 states have internal predecessors, (5010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:09,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3070 states to 3070 states and 5010 transitions. [2021-12-07 00:51:09,881 INFO L78 Accepts]: Start accepts. Automaton has 3070 states and 5010 transitions. Word has length 130 [2021-12-07 00:51:09,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:09,881 INFO L470 AbstractCegarLoop]: Abstraction has 3070 states and 5010 transitions. [2021-12-07 00:51:09,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:09,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3070 states and 5010 transitions. [2021-12-07 00:51:09,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-07 00:51:09,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:09,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:51:09,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:51:09,884 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:09,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:09,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1405282905, now seen corresponding path program 1 times [2021-12-07 00:51:09,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:09,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546411905] [2021-12-07 00:51:09,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:09,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:09,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:09,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546411905] [2021-12-07 00:51:09,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546411905] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:09,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:09,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:51:09,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684312504] [2021-12-07 00:51:09,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:09,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:51:09,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:09,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:51:09,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:51:09,948 INFO L87 Difference]: Start difference. First operand 3070 states and 5010 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:10,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:10,077 INFO L93 Difference]: Finished difference Result 8952 states and 14718 transitions. [2021-12-07 00:51:10,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:51:10,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-12-07 00:51:10,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:10,102 INFO L225 Difference]: With dead ends: 8952 [2021-12-07 00:51:10,102 INFO L226 Difference]: Without dead ends: 6074 [2021-12-07 00:51:10,106 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 [2021-12-07 00:51:10,107 INFO L933 BasicCegarLoop]: 509 mSDtfsCounter, 565 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:51:10,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 1521 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:51:10,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6074 states. [2021-12-07 00:51:10,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6074 to 4555. [2021-12-07 00:51:10,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4555 states, 4554 states have (on average 1.636802810715854) internal successors, (7454), 4554 states have internal predecessors, (7454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4555 states to 4555 states and 7454 transitions. [2021-12-07 00:51:10,259 INFO L78 Accepts]: Start accepts. Automaton has 4555 states and 7454 transitions. Word has length 131 [2021-12-07 00:51:10,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:10,260 INFO L470 AbstractCegarLoop]: Abstraction has 4555 states and 7454 transitions. [2021-12-07 00:51:10,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:10,260 INFO L276 IsEmpty]: Start isEmpty. Operand 4555 states and 7454 transitions. [2021-12-07 00:51:10,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-07 00:51:10,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:10,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:51:10,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:51:10,263 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:10,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:10,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1311505199, now seen corresponding path program 1 times [2021-12-07 00:51:10,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:10,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343722187] [2021-12-07 00:51:10,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:10,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:10,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:10,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343722187] [2021-12-07 00:51:10,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343722187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:10,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:10,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:51:10,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586138290] [2021-12-07 00:51:10,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:10,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:51:10,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:10,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:51:10,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:51:10,316 INFO L87 Difference]: Start difference. First operand 4555 states and 7454 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:10,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:10,522 INFO L93 Difference]: Finished difference Result 13332 states and 21904 transitions. [2021-12-07 00:51:10,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:51:10,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-12-07 00:51:10,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:10,561 INFO L225 Difference]: With dead ends: 13332 [2021-12-07 00:51:10,561 INFO L226 Difference]: Without dead ends: 8969 [2021-12-07 00:51:10,567 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 [2021-12-07 00:51:10,567 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 565 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:51:10,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 1645 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:51:10,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8969 states. [2021-12-07 00:51:10,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8969 to 6738. [2021-12-07 00:51:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6738 states, 6737 states have (on average 1.6355944782544158) internal successors, (11019), 6737 states have internal predecessors, (11019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:10,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6738 states to 6738 states and 11019 transitions. [2021-12-07 00:51:10,811 INFO L78 Accepts]: Start accepts. Automaton has 6738 states and 11019 transitions. Word has length 132 [2021-12-07 00:51:10,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:10,812 INFO L470 AbstractCegarLoop]: Abstraction has 6738 states and 11019 transitions. [2021-12-07 00:51:10,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:10,812 INFO L276 IsEmpty]: Start isEmpty. Operand 6738 states and 11019 transitions. [2021-12-07 00:51:10,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-07 00:51:10,816 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:10,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:51:10,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:51:10,817 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:10,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:10,818 INFO L85 PathProgramCache]: Analyzing trace with hash 838728922, now seen corresponding path program 1 times [2021-12-07 00:51:10,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:10,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030050370] [2021-12-07 00:51:10,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:10,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:10,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:10,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:10,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030050370] [2021-12-07 00:51:10,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030050370] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:10,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:10,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:51:10,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630207854] [2021-12-07 00:51:10,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:10,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:51:10,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:10,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:51:10,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:51:10,862 INFO L87 Difference]: Start difference. First operand 6738 states and 11019 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:11,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:11,068 INFO L93 Difference]: Finished difference Result 14989 states and 24645 transitions. [2021-12-07 00:51:11,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:51:11,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-12-07 00:51:11,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:11,085 INFO L225 Difference]: With dead ends: 14989 [2021-12-07 00:51:11,085 INFO L226 Difference]: Without dead ends: 10369 [2021-12-07 00:51:11,090 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 [2021-12-07 00:51:11,091 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 174 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1133 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 [2021-12-07 00:51:11,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 1133 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:51:11,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10369 states. [2021-12-07 00:51:11,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10369 to 10367. [2021-12-07 00:51:11,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10367 states, 10366 states have (on average 1.6335134092224581) internal successors, (16933), 10366 states have internal predecessors, (16933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:11,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10367 states to 10367 states and 16933 transitions. [2021-12-07 00:51:11,351 INFO L78 Accepts]: Start accepts. Automaton has 10367 states and 16933 transitions. Word has length 133 [2021-12-07 00:51:11,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:11,352 INFO L470 AbstractCegarLoop]: Abstraction has 10367 states and 16933 transitions. [2021-12-07 00:51:11,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:11,352 INFO L276 IsEmpty]: Start isEmpty. Operand 10367 states and 16933 transitions. [2021-12-07 00:51:11,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-07 00:51:11,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:11,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:51:11,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 00:51:11,354 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:11,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:11,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1576389218, now seen corresponding path program 1 times [2021-12-07 00:51:11,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:11,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568969864] [2021-12-07 00:51:11,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:11,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:11,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:11,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:11,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568969864] [2021-12-07 00:51:11,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568969864] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:11,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:11,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:51:11,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177285931] [2021-12-07 00:51:11,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:11,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:51:11,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:11,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:51:11,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:51:11,409 INFO L87 Difference]: Start difference. First operand 10367 states and 16933 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:11,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:11,621 INFO L93 Difference]: Finished difference Result 22920 states and 37484 transitions. [2021-12-07 00:51:11,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:51:11,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-12-07 00:51:11,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:11,665 INFO L225 Difference]: With dead ends: 22920 [2021-12-07 00:51:11,665 INFO L226 Difference]: Without dead ends: 15821 [2021-12-07 00:51:11,677 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 [2021-12-07 00:51:11,678 INFO L933 BasicCegarLoop]: 644 mSDtfsCounter, 167 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1123 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 [2021-12-07 00:51:11,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 1123 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:51:11,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15821 states. [2021-12-07 00:51:12,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15821 to 15819. [2021-12-07 00:51:12,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15819 states, 15818 states have (on average 1.6255531672777848) internal successors, (25713), 15818 states have internal predecessors, (25713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:12,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15819 states to 15819 states and 25713 transitions. [2021-12-07 00:51:12,071 INFO L78 Accepts]: Start accepts. Automaton has 15819 states and 25713 transitions. Word has length 133 [2021-12-07 00:51:12,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:12,071 INFO L470 AbstractCegarLoop]: Abstraction has 15819 states and 25713 transitions. [2021-12-07 00:51:12,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:12,072 INFO L276 IsEmpty]: Start isEmpty. Operand 15819 states and 25713 transitions. [2021-12-07 00:51:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-07 00:51:12,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:12,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:51:12,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 00:51:12,073 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:12,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:12,074 INFO L85 PathProgramCache]: Analyzing trace with hash 721034008, now seen corresponding path program 1 times [2021-12-07 00:51:12,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:12,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718876910] [2021-12-07 00:51:12,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:12,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:12,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:12,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718876910] [2021-12-07 00:51:12,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718876910] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:12,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:12,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:51:12,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612501564] [2021-12-07 00:51:12,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:12,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:51:12,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:12,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:51:12,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:51:12,116 INFO L87 Difference]: Start difference. First operand 15819 states and 25713 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:12,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:12,431 INFO L93 Difference]: Finished difference Result 30877 states and 50296 transitions. [2021-12-07 00:51:12,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:51:12,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-12-07 00:51:12,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:12,463 INFO L225 Difference]: With dead ends: 30877 [2021-12-07 00:51:12,463 INFO L226 Difference]: Without dead ends: 22254 [2021-12-07 00:51:12,473 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 [2021-12-07 00:51:12,474 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 160 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1106 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 [2021-12-07 00:51:12,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 1106 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:51:12,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22254 states. [2021-12-07 00:51:12,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22254 to 22252. [2021-12-07 00:51:12,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22252 states, 22251 states have (on average 1.6184441148712418) internal successors, (36012), 22251 states have internal predecessors, (36012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:12,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22252 states to 22252 states and 36012 transitions. [2021-12-07 00:51:12,914 INFO L78 Accepts]: Start accepts. Automaton has 22252 states and 36012 transitions. Word has length 133 [2021-12-07 00:51:12,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:12,914 INFO L470 AbstractCegarLoop]: Abstraction has 22252 states and 36012 transitions. [2021-12-07 00:51:12,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:12,914 INFO L276 IsEmpty]: Start isEmpty. Operand 22252 states and 36012 transitions. [2021-12-07 00:51:12,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-07 00:51:12,915 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:12,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:51:12,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 00:51:12,916 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:12,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:12,916 INFO L85 PathProgramCache]: Analyzing trace with hash 536413840, now seen corresponding path program 1 times [2021-12-07 00:51:12,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:12,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094894726] [2021-12-07 00:51:12,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:12,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:12,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:12,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:12,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094894726] [2021-12-07 00:51:12,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094894726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:12,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:12,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:51:12,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039710768] [2021-12-07 00:51:12,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:12,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:51:12,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:12,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:51:12,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:51:12,965 INFO L87 Difference]: Start difference. First operand 22252 states and 36012 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:13,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:13,583 INFO L93 Difference]: Finished difference Result 71884 states and 116652 transitions. [2021-12-07 00:51:13,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:51:13,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-12-07 00:51:13,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:13,652 INFO L225 Difference]: With dead ends: 71884 [2021-12-07 00:51:13,653 INFO L226 Difference]: Without dead ends: 49852 [2021-12-07 00:51:13,676 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 [2021-12-07 00:51:13,676 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 563 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:51:13,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 1647 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:51:13,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49852 states. [2021-12-07 00:51:14,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49852 to 35959. [2021-12-07 00:51:14,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35959 states, 35958 states have (on average 1.6142722064630959) internal successors, (58046), 35958 states have internal predecessors, (58046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35959 states to 35959 states and 58046 transitions. [2021-12-07 00:51:14,472 INFO L78 Accepts]: Start accepts. Automaton has 35959 states and 58046 transitions. Word has length 133 [2021-12-07 00:51:14,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:14,473 INFO L470 AbstractCegarLoop]: Abstraction has 35959 states and 58046 transitions. [2021-12-07 00:51:14,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:14,473 INFO L276 IsEmpty]: Start isEmpty. Operand 35959 states and 58046 transitions. [2021-12-07 00:51:14,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-07 00:51:14,474 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:14,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:51:14,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 00:51:14,475 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:14,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:14,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1673295070, now seen corresponding path program 1 times [2021-12-07 00:51:14,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:14,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931545325] [2021-12-07 00:51:14,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:14,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:14,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:14,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:14,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931545325] [2021-12-07 00:51:14,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931545325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:14,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:14,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:51:14,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831538943] [2021-12-07 00:51:14,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:14,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:51:14,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:14,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:51:14,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:51:14,523 INFO L87 Difference]: Start difference. First operand 35959 states and 58046 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:15,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:15,274 INFO L93 Difference]: Finished difference Result 70577 states and 114169 transitions. [2021-12-07 00:51:15,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:51:15,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-12-07 00:51:15,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:15,333 INFO L225 Difference]: With dead ends: 70577 [2021-12-07 00:51:15,334 INFO L226 Difference]: Without dead ends: 50524 [2021-12-07 00:51:15,350 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 [2021-12-07 00:51:15,350 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 153 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1088 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 [2021-12-07 00:51:15,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 1088 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:51:15,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50524 states. [2021-12-07 00:51:16,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50524 to 50522. [2021-12-07 00:51:16,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50522 states, 50521 states have (on average 1.605569961006314) internal successors, (81115), 50521 states have internal predecessors, (81115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:16,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50522 states to 50522 states and 81115 transitions. [2021-12-07 00:51:16,241 INFO L78 Accepts]: Start accepts. Automaton has 50522 states and 81115 transitions. Word has length 133 [2021-12-07 00:51:16,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:16,242 INFO L470 AbstractCegarLoop]: Abstraction has 50522 states and 81115 transitions. [2021-12-07 00:51:16,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:16,242 INFO L276 IsEmpty]: Start isEmpty. Operand 50522 states and 81115 transitions. [2021-12-07 00:51:16,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-07 00:51:16,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:16,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:51:16,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 00:51:16,243 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:16,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:16,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2138633752, now seen corresponding path program 1 times [2021-12-07 00:51:16,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:16,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289111207] [2021-12-07 00:51:16,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:16,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:16,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:16,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:16,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289111207] [2021-12-07 00:51:16,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289111207] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:16,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:16,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:51:16,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090775590] [2021-12-07 00:51:16,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:16,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:51:16,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:16,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:51:16,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:51:16,381 INFO L87 Difference]: Start difference. First operand 50522 states and 81115 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:18,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:18,177 INFO L93 Difference]: Finished difference Result 162671 states and 261879 transitions. [2021-12-07 00:51:18,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:51:18,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-12-07 00:51:18,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:18,316 INFO L225 Difference]: With dead ends: 162671 [2021-12-07 00:51:18,316 INFO L226 Difference]: Without dead ends: 112382 [2021-12-07 00:51:18,344 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 [2021-12-07 00:51:18,344 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 561 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:51:18,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 1632 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:51:18,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112382 states. [2021-12-07 00:51:19,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112382 to 81227. [2021-12-07 00:51:19,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81227 states, 81226 states have (on average 1.6005835569891413) internal successors, (130009), 81226 states have internal predecessors, (130009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:20,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81227 states to 81227 states and 130009 transitions. [2021-12-07 00:51:20,113 INFO L78 Accepts]: Start accepts. Automaton has 81227 states and 130009 transitions. Word has length 134 [2021-12-07 00:51:20,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:20,113 INFO L470 AbstractCegarLoop]: Abstraction has 81227 states and 130009 transitions. [2021-12-07 00:51:20,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:20,113 INFO L276 IsEmpty]: Start isEmpty. Operand 81227 states and 130009 transitions. [2021-12-07 00:51:20,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-07 00:51:20,114 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:20,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:51:20,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-07 00:51:20,115 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:20,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:20,115 INFO L85 PathProgramCache]: Analyzing trace with hash -153851200, now seen corresponding path program 1 times [2021-12-07 00:51:20,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:20,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167035683] [2021-12-07 00:51:20,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:20,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:20,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:20,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167035683] [2021-12-07 00:51:20,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167035683] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:20,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:20,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:51:20,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779308280] [2021-12-07 00:51:20,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:20,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:51:20,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:20,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:51:20,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:51:20,228 INFO L87 Difference]: Start difference. First operand 81227 states and 130009 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:21,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:21,664 INFO L93 Difference]: Finished difference Result 162223 states and 259648 transitions. [2021-12-07 00:51:21,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:51:21,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2021-12-07 00:51:21,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:21,761 INFO L225 Difference]: With dead ends: 162223 [2021-12-07 00:51:21,761 INFO L226 Difference]: Without dead ends: 81229 [2021-12-07 00:51:21,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:51:21,803 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 457 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:51:21,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 1924 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:51:21,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81229 states. [2021-12-07 00:51:23,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81229 to 81227. [2021-12-07 00:51:23,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81227 states, 81226 states have (on average 1.5928889764361165) internal successors, (129384), 81226 states have internal predecessors, (129384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:23,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81227 states to 81227 states and 129384 transitions. [2021-12-07 00:51:23,766 INFO L78 Accepts]: Start accepts. Automaton has 81227 states and 129384 transitions. Word has length 136 [2021-12-07 00:51:23,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:23,766 INFO L470 AbstractCegarLoop]: Abstraction has 81227 states and 129384 transitions. [2021-12-07 00:51:23,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:23,766 INFO L276 IsEmpty]: Start isEmpty. Operand 81227 states and 129384 transitions. [2021-12-07 00:51:23,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-07 00:51:23,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:23,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:51:23,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 00:51:23,768 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:23,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:23,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1698314093, now seen corresponding path program 1 times [2021-12-07 00:51:23,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:23,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688940618] [2021-12-07 00:51:23,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:23,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:23,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:23,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688940618] [2021-12-07 00:51:23,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688940618] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:23,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:23,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:51:23,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630340064] [2021-12-07 00:51:23,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:23,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:51:23,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:23,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:51:23,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:51:23,881 INFO L87 Difference]: Start difference. First operand 81227 states and 129384 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:26,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:26,495 INFO L93 Difference]: Finished difference Result 237501 states and 378780 transitions. [2021-12-07 00:51:26,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:51:26,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2021-12-07 00:51:26,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:26,726 INFO L225 Difference]: With dead ends: 237501 [2021-12-07 00:51:26,726 INFO L226 Difference]: Without dead ends: 156507 [2021-12-07 00:51:26,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:51:26,797 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 756 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:51:26,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 1935 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:51:26,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156507 states. [2021-12-07 00:51:30,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156507 to 156505. [2021-12-07 00:51:30,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156505 states, 156504 states have (on average 1.5830202422941266) internal successors, (247749), 156504 states have internal predecessors, (247749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156505 states to 156505 states and 247749 transitions. [2021-12-07 00:51:30,541 INFO L78 Accepts]: Start accepts. Automaton has 156505 states and 247749 transitions. Word has length 139 [2021-12-07 00:51:30,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:30,541 INFO L470 AbstractCegarLoop]: Abstraction has 156505 states and 247749 transitions. [2021-12-07 00:51:30,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:30,541 INFO L276 IsEmpty]: Start isEmpty. Operand 156505 states and 247749 transitions. [2021-12-07 00:51:30,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-07 00:51:30,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:30,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:51:30,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-07 00:51:30,542 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:30,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:30,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1539474647, now seen corresponding path program 1 times [2021-12-07 00:51:30,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:30,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788474709] [2021-12-07 00:51:30,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:30,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:30,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:51:30,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:30,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788474709] [2021-12-07 00:51:30,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788474709] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:30,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:30,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:51:30,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841719239] [2021-12-07 00:51:30,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:30,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:51:30,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:30,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:51:30,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:51:30,643 INFO L87 Difference]: Start difference. First operand 156505 states and 247749 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:36,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:36,252 INFO L93 Difference]: Finished difference Result 302832 states and 475525 transitions. [2021-12-07 00:51:36,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:51:36,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-12-07 00:51:36,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:36,707 INFO L225 Difference]: With dead ends: 302832 [2021-12-07 00:51:36,708 INFO L226 Difference]: Without dead ends: 302830 [2021-12-07 00:51:36,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:51:36,766 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 529 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:51:36,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 2132 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:51:36,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302830 states. [2021-12-07 00:51:41,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302830 to 162313. [2021-12-07 00:51:41,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162313 states, 162312 states have (on average 1.5619917196510424) internal successors, (253530), 162312 states have internal predecessors, (253530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:41,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162313 states to 162313 states and 253530 transitions. [2021-12-07 00:51:41,420 INFO L78 Accepts]: Start accepts. Automaton has 162313 states and 253530 transitions. Word has length 140 [2021-12-07 00:51:41,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:41,420 INFO L470 AbstractCegarLoop]: Abstraction has 162313 states and 253530 transitions. [2021-12-07 00:51:41,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:41,420 INFO L276 IsEmpty]: Start isEmpty. Operand 162313 states and 253530 transitions. [2021-12-07 00:51:41,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:51:41,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:41,425 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:51:41,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-07 00:51:41,425 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:41,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:41,426 INFO L85 PathProgramCache]: Analyzing trace with hash 196798975, now seen corresponding path program 1 times [2021-12-07 00:51:41,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:41,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986834735] [2021-12-07 00:51:41,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:41,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:51:41,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:41,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986834735] [2021-12-07 00:51:41,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986834735] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:41,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:41,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:51:41,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645521606] [2021-12-07 00:51:41,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:41,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:51:41,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:41,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:51:41,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:51:41,473 INFO L87 Difference]: Start difference. First operand 162313 states and 253530 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:46,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:51:46,948 INFO L93 Difference]: Finished difference Result 369072 states and 579015 transitions. [2021-12-07 00:51:46,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:51:46,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-12-07 00:51:46,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:51:47,369 INFO L225 Difference]: With dead ends: 369072 [2021-12-07 00:51:47,370 INFO L226 Difference]: Without dead ends: 296070 [2021-12-07 00:51:47,420 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 [2021-12-07 00:51:47,420 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 142 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:51:47,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 967 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:51:47,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296070 states. [2021-12-07 00:51:54,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296070 to 295818. [2021-12-07 00:51:54,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295818 states, 295817 states have (on average 1.5653698063329693) internal successors, (463063), 295817 states have internal predecessors, (463063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:54,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295818 states to 295818 states and 463063 transitions. [2021-12-07 00:51:54,947 INFO L78 Accepts]: Start accepts. Automaton has 295818 states and 463063 transitions. Word has length 177 [2021-12-07 00:51:54,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:51:54,948 INFO L470 AbstractCegarLoop]: Abstraction has 295818 states and 463063 transitions. [2021-12-07 00:51:54,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:51:54,948 INFO L276 IsEmpty]: Start isEmpty. Operand 295818 states and 463063 transitions. [2021-12-07 00:51:54,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:51:54,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:54,953 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:51:54,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-07 00:51:54,954 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:54,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:54,954 INFO L85 PathProgramCache]: Analyzing trace with hash 934459271, now seen corresponding path program 1 times [2021-12-07 00:51:54,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:54,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409042188] [2021-12-07 00:51:54,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:54,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:51:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:51:55,019 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-07 00:51:55,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:51:55,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409042188] [2021-12-07 00:51:55,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409042188] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:51:55,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:51:55,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:51:55,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953064767] [2021-12-07 00:51:55,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:51:55,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:51:55,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:51:55,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:51:55,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:51:55,021 INFO L87 Difference]: Start difference. First operand 295818 states and 463063 transitions. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:52:09,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:52:09,062 INFO L93 Difference]: Finished difference Result 818323 states and 1285395 transitions. [2021-12-07 00:52:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:52:09,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-12-07 00:52:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:52:10,263 INFO L225 Difference]: With dead ends: 818323 [2021-12-07 00:52:10,263 INFO L226 Difference]: Without dead ends: 688521 [2021-12-07 00:52:10,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:52:10,402 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 1138 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2659 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:52:10,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 2659 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:52:10,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688521 states. [2021-12-07 00:52:23,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688521 to 478163. [2021-12-07 00:52:23,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478163 states, 478162 states have (on average 1.5634659383221585) internal successors, (747590), 478162 states have internal predecessors, (747590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:52:24,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478163 states to 478163 states and 747590 transitions. [2021-12-07 00:52:24,909 INFO L78 Accepts]: Start accepts. Automaton has 478163 states and 747590 transitions. Word has length 177 [2021-12-07 00:52:24,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:52:24,909 INFO L470 AbstractCegarLoop]: Abstraction has 478163 states and 747590 transitions. [2021-12-07 00:52:24,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:52:24,909 INFO L276 IsEmpty]: Start isEmpty. Operand 478163 states and 747590 transitions. [2021-12-07 00:52:24,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:52:24,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:52:24,914 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:52:24,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-07 00:52:24,914 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:52:24,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:52:24,915 INFO L85 PathProgramCache]: Analyzing trace with hash 79104061, now seen corresponding path program 1 times [2021-12-07 00:52:24,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:52:24,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585489723] [2021-12-07 00:52:24,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:52:24,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:52:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:52:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-07 00:52:24,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:52:24,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585489723] [2021-12-07 00:52:24,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585489723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:52:24,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:52:24,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:52:24,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220365673] [2021-12-07 00:52:24,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:52:24,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:52:24,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:52:24,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:52:24,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:52:24,975 INFO L87 Difference]: Start difference. First operand 478163 states and 747590 transitions. Second operand has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:52:41,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:52:41,314 INFO L93 Difference]: Finished difference Result 901395 states and 1416511 transitions. [2021-12-07 00:52:41,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:52:41,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-12-07 00:52:41,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:52:42,642 INFO L225 Difference]: With dead ends: 901395 [2021-12-07 00:52:42,642 INFO L226 Difference]: Without dead ends: 771593 [2021-12-07 00:52:42,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:52:42,779 INFO L933 BasicCegarLoop]: 691 mSDtfsCounter, 1209 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:52:42,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1209 Valid, 2546 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:52:43,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771593 states. [2021-12-07 00:53:00,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771593 to 647373. [2021-12-07 00:53:01,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647373 states, 647372 states have (on average 1.5648498853827475) internal successors, (1013040), 647372 states have internal predecessors, (1013040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:53:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647373 states to 647373 states and 1013040 transitions. [2021-12-07 00:53:02,676 INFO L78 Accepts]: Start accepts. Automaton has 647373 states and 1013040 transitions. Word has length 177 [2021-12-07 00:53:02,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:53:02,677 INFO L470 AbstractCegarLoop]: Abstraction has 647373 states and 1013040 transitions. [2021-12-07 00:53:02,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:53:02,677 INFO L276 IsEmpty]: Start isEmpty. Operand 647373 states and 1013040 transitions. [2021-12-07 00:53:02,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:53:02,683 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:53:02,683 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:53:02,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-07 00:53:02,683 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:53:02,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:53:02,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1979742279, now seen corresponding path program 1 times [2021-12-07 00:53:02,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:53:02,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222130697] [2021-12-07 00:53:02,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:53:02,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:53:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:53:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-07 00:53:02,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:53:02,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222130697] [2021-12-07 00:53:02,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222130697] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:53:02,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:53:02,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:53:02,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103600271] [2021-12-07 00:53:02,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:53:02,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:53:02,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:53:02,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:53:02,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:53:02,744 INFO L87 Difference]: Start difference. First operand 647373 states and 1013040 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:53:20,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:53:20,466 INFO L93 Difference]: Finished difference Result 953315 states and 1498319 transitions. [2021-12-07 00:53:20,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:53:20,467 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-12-07 00:53:20,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:53:21,923 INFO L225 Difference]: With dead ends: 953315 [2021-12-07 00:53:21,923 INFO L226 Difference]: Without dead ends: 823513 [2021-12-07 00:53:22,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:53:22,061 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 1145 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 2965 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:53:22,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 2965 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:53:22,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823513 states. [2021-12-07 00:53:42,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823513 to 751433. [2021-12-07 00:53:42,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751433 states, 751432 states have (on average 1.5665023581641453) internal successors, (1177120), 751432 states have internal predecessors, (1177120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:53:44,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751433 states to 751433 states and 1177120 transitions. [2021-12-07 00:53:44,369 INFO L78 Accepts]: Start accepts. Automaton has 751433 states and 1177120 transitions. Word has length 177 [2021-12-07 00:53:44,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:53:44,369 INFO L470 AbstractCegarLoop]: Abstraction has 751433 states and 1177120 transitions. [2021-12-07 00:53:44,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:53:44,369 INFO L276 IsEmpty]: Start isEmpty. Operand 751433 states and 1177120 transitions. [2021-12-07 00:53:44,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-07 00:53:44,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:53:44,375 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:53:44,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-07 00:53:44,375 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:53:44,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:53:44,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1479813784, now seen corresponding path program 1 times [2021-12-07 00:53:44,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:53:44,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493479629] [2021-12-07 00:53:44,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:53:44,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:53:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:53:44,417 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:53:44,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:53:44,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493479629] [2021-12-07 00:53:44,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493479629] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:53:44,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:53:44,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:53:44,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649856547] [2021-12-07 00:53:44,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:53:44,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:53:44,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:53:44,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:53:44,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:53:44,418 INFO L87 Difference]: Start difference. First operand 751433 states and 1177120 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:54:20,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:54:20,174 INFO L93 Difference]: Finished difference Result 2237533 states and 3503841 transitions. [2021-12-07 00:54:20,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:54:20,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2021-12-07 00:54:20,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:54:22,824 INFO L225 Difference]: With dead ends: 2237533 [2021-12-07 00:54:22,824 INFO L226 Difference]: Without dead ends: 1486143 [2021-12-07 00:54:23,364 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 [2021-12-07 00:54:23,365 INFO L933 BasicCegarLoop]: 829 mSDtfsCounter, 425 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:54:23,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 1324 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:54:24,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486143 states. [2021-12-07 00:55:05,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486143 to 1486141. [2021-12-07 00:55:06,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486141 states, 1486140 states have (on average 1.5584648821779914) internal successors, (2316097), 1486140 states have internal predecessors, (2316097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:55:10,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486141 states to 1486141 states and 2316097 transitions. [2021-12-07 00:55:10,706 INFO L78 Accepts]: Start accepts. Automaton has 1486141 states and 2316097 transitions. Word has length 178 [2021-12-07 00:55:10,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:55:10,706 INFO L470 AbstractCegarLoop]: Abstraction has 1486141 states and 2316097 transitions. [2021-12-07 00:55:10,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:55:10,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1486141 states and 2316097 transitions. [2021-12-07 00:55:10,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-07 00:55:10,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:55:10,716 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:55:10,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-07 00:55:10,716 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:55:10,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:55:10,716 INFO L85 PathProgramCache]: Analyzing trace with hash -311437962, now seen corresponding path program 1 times [2021-12-07 00:55:10,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:55:10,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369137925] [2021-12-07 00:55:10,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:55:10,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:55:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:55:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:55:10,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:55:10,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369137925] [2021-12-07 00:55:10,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369137925] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:55:10,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:55:10,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:55:10,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335059372] [2021-12-07 00:55:10,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:55:10,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:55:10,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:55:10,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:55:10,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:55:10,763 INFO L87 Difference]: Start difference. First operand 1486141 states and 2316097 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:55:48,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:55:48,899 INFO L93 Difference]: Finished difference Result 2368689 states and 3701988 transitions. [2021-12-07 00:55:48,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:55:48,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2021-12-07 00:55:48,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:55:51,865 INFO L225 Difference]: With dead ends: 2368689 [2021-12-07 00:55:51,865 INFO L226 Difference]: Without dead ends: 1590657 [2021-12-07 00:55:52,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:55:52,536 INFO L933 BasicCegarLoop]: 691 mSDtfsCounter, 314 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:55:52,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 1668 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:55:53,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590657 states. [2021-12-07 00:56:27,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590657 to 1014751. [2021-12-07 00:56:27,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014751 states, 1014750 states have (on average 1.5539738851933973) internal successors, (1576895), 1014750 states have internal predecessors, (1576895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:56:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014751 states to 1014751 states and 1576895 transitions. [2021-12-07 00:56:30,555 INFO L78 Accepts]: Start accepts. Automaton has 1014751 states and 1576895 transitions. Word has length 178 [2021-12-07 00:56:30,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:56:30,555 INFO L470 AbstractCegarLoop]: Abstraction has 1014751 states and 1576895 transitions. [2021-12-07 00:56:30,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:56:30,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1014751 states and 1576895 transitions. [2021-12-07 00:56:30,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-07 00:56:30,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:56:30,564 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:56:30,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-07 00:56:30,564 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:56:30,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:56:30,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1474797518, now seen corresponding path program 1 times [2021-12-07 00:56:30,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:56:30,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59022340] [2021-12-07 00:56:30,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:56:30,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:56:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:56:30,603 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:56:30,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:56:30,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59022340] [2021-12-07 00:56:30,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59022340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:56:30,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:56:30,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:56:30,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843069098] [2021-12-07 00:56:30,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:56:30,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:56:30,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:56:30,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:56:30,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:56:30,605 INFO L87 Difference]: Start difference. First operand 1014751 states and 1576895 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:57:26,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:57:26,307 INFO L93 Difference]: Finished difference Result 3021577 states and 4693582 transitions. [2021-12-07 00:57:26,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:57:26,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2021-12-07 00:57:26,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:57:30,067 INFO L225 Difference]: With dead ends: 3021577 [2021-12-07 00:57:30,068 INFO L226 Difference]: Without dead ends: 2006923 [2021-12-07 00:57:30,817 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 [2021-12-07 00:57:30,817 INFO L933 BasicCegarLoop]: 814 mSDtfsCounter, 423 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:57:30,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 1309 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:57:32,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006923 states. [2021-12-07 00:58:35,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006923 to 2006921. [2021-12-07 00:58:37,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2006921 states, 2006920 states have (on average 1.5459141370856835) internal successors, (3102526), 2006920 states have internal predecessors, (3102526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:58:42,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006921 states to 2006921 states and 3102526 transitions. [2021-12-07 00:58:42,742 INFO L78 Accepts]: Start accepts. Automaton has 2006921 states and 3102526 transitions. Word has length 178 [2021-12-07 00:58:42,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:58:42,742 INFO L470 AbstractCegarLoop]: Abstraction has 2006921 states and 3102526 transitions. [2021-12-07 00:58:42,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:58:42,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2006921 states and 3102526 transitions. [2021-12-07 00:58:42,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-07 00:58:42,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:58:42,757 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:58:42,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-07 00:58:42,757 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:58:42,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:42,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1421532632, now seen corresponding path program 1 times [2021-12-07 00:58:42,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:42,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103759267] [2021-12-07 00:58:42,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:42,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:58:42,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:58:42,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103759267] [2021-12-07 00:58:42,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103759267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:58:42,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:58:42,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:58:42,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057640269] [2021-12-07 00:58:42,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:58:42,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:58:42,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:58:42,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:58:42,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:58:42,803 INFO L87 Difference]: Start difference. First operand 2006921 states and 3102526 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)