./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.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_f0b88f86-4ea2-4d36-b532-bf1763256e0b/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b88f86-4ea2-4d36-b532-bf1763256e0b/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_f0b88f86-4ea2-4d36-b532-bf1763256e0b/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b88f86-4ea2-4d36-b532-bf1763256e0b/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b88f86-4ea2-4d36-b532-bf1763256e0b/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_f0b88f86-4ea2-4d36-b532-bf1763256e0b/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 558f970b63375a18824a4471ce91e71e4e14632a20bfa5002df552fa8b202ea3 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:34:16,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:34:16,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:34:16,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:34:16,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:34:16,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:34:16,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:34:16,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:34:16,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:34:16,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:34:16,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:34:16,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:34:16,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:34:16,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:34:16,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:34:16,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:34:16,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:34:16,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:34:16,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:34:16,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:34:16,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:34:16,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:34:16,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:34:16,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:34:16,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:34:16,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:34:16,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:34:16,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:34:16,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:34:16,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:34:16,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:34:16,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:34:16,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:34:16,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:34:16,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:34:16,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:34:16,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:34:16,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:34:16,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:34:16,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:34:16,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:34:16,098 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b88f86-4ea2-4d36-b532-bf1763256e0b/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:34:16,120 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:34:16,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:34:16,121 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:34:16,121 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:34:16,122 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:34:16,122 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:34:16,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:34:16,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:34:16,123 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:34:16,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:34:16,123 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:34:16,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:34:16,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:34:16,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:34:16,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:34:16,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:34:16,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:34:16,125 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:34:16,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:34:16,125 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:34:16,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:34:16,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:34:16,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:34:16,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:34:16,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:34:16,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:34:16,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:34:16,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:34:16,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:34:16,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:34:16,127 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:34:16,127 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:34:16,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:34:16,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:34:16,128 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_f0b88f86-4ea2-4d36-b532-bf1763256e0b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b88f86-4ea2-4d36-b532-bf1763256e0b/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 558f970b63375a18824a4471ce91e71e4e14632a20bfa5002df552fa8b202ea3 [2021-12-07 01:34:16,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:34:16,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:34:16,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:34:16,343 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:34:16,343 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:34:16,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b88f86-4ea2-4d36-b532-bf1763256e0b/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c [2021-12-07 01:34:16,386 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b88f86-4ea2-4d36-b532-bf1763256e0b/bin/uautomizer-DrprNOufMa/data/acbf57674/489735019ee540b397a69363b0cb8e11/FLAG66b585394 [2021-12-07 01:34:16,785 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:34:16,785 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b88f86-4ea2-4d36-b532-bf1763256e0b/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c [2021-12-07 01:34:16,793 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b88f86-4ea2-4d36-b532-bf1763256e0b/bin/uautomizer-DrprNOufMa/data/acbf57674/489735019ee540b397a69363b0cb8e11/FLAG66b585394 [2021-12-07 01:34:16,802 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b88f86-4ea2-4d36-b532-bf1763256e0b/bin/uautomizer-DrprNOufMa/data/acbf57674/489735019ee540b397a69363b0cb8e11 [2021-12-07 01:34:16,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:34:16,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:34:16,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:34:16,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:34:16,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:34:16,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:34:16" (1/1) ... [2021-12-07 01:34:16,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@477bb337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:16, skipping insertion in model container [2021-12-07 01:34:16,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:34:16" (1/1) ... [2021-12-07 01:34:16,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:34:16,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:34:17,024 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_f0b88f86-4ea2-4d36-b532-bf1763256e0b/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c[14509,14522] [2021-12-07 01:34:17,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:34:17,036 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:34:17,080 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_f0b88f86-4ea2-4d36-b532-bf1763256e0b/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c[14509,14522] [2021-12-07 01:34:17,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:34:17,091 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:34:17,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:17 WrapperNode [2021-12-07 01:34:17,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:34:17,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:34:17,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:34:17,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:34:17,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:17" (1/1) ... [2021-12-07 01:34:17,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:17" (1/1) ... [2021-12-07 01:34:17,141 INFO L137 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 479 [2021-12-07 01:34:17,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:34:17,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:34:17,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:34:17,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:34:17,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:17" (1/1) ... [2021-12-07 01:34:17,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:17" (1/1) ... [2021-12-07 01:34:17,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:17" (1/1) ... [2021-12-07 01:34:17,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:17" (1/1) ... [2021-12-07 01:34:17,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:17" (1/1) ... [2021-12-07 01:34:17,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:17" (1/1) ... [2021-12-07 01:34:17,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:17" (1/1) ... [2021-12-07 01:34:17,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:34:17,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:34:17,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:34:17,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:34:17,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:17" (1/1) ... [2021-12-07 01:34:17,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:34:17,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b88f86-4ea2-4d36-b532-bf1763256e0b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:34:17,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b88f86-4ea2-4d36-b532-bf1763256e0b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:34:17,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b88f86-4ea2-4d36-b532-bf1763256e0b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:34:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:34:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:34:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:34:17,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:34:17,311 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:34:17,312 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:34:17,686 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:34:17,693 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:34:17,694 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 01:34:17,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:34:17 BoogieIcfgContainer [2021-12-07 01:34:17,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:34:17,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:34:17,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:34:17,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:34:17,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:34:16" (1/3) ... [2021-12-07 01:34:17,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b997025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:34:17, skipping insertion in model container [2021-12-07 01:34:17,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:17" (2/3) ... [2021-12-07 01:34:17,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b997025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:34:17, skipping insertion in model container [2021-12-07 01:34:17,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:34:17" (3/3) ... [2021-12-07 01:34:17,701 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c [2021-12-07 01:34:17,705 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:34:17,705 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:34:17,739 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:34:17,744 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 01:34:17,744 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:34:17,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.748299319727891) internal successors, (257), 148 states have internal predecessors, (257), 0 states have call successors, (0), 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 01:34:17,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-07 01:34:17,764 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:17,765 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] [2021-12-07 01:34:17,765 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:17,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:17,769 INFO L85 PathProgramCache]: Analyzing trace with hash -812713456, now seen corresponding path program 1 times [2021-12-07 01:34:17,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:17,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525199523] [2021-12-07 01:34:17,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:17,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:17,950 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 01:34:17,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:17,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525199523] [2021-12-07 01:34:17,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525199523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:17,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:17,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:34:17,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499393128] [2021-12-07 01:34:17,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:17,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 01:34:17,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:17,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 01:34:17,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:34:17,978 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.748299319727891) internal successors, (257), 148 states have internal predecessors, (257), 0 states have call successors, (0), 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 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 01:34:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:18,001 INFO L93 Difference]: Finished difference Result 235 states and 403 transitions. [2021-12-07 01:34:18,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 01:34:18,002 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-12-07 01:34:18,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:18,010 INFO L225 Difference]: With dead ends: 235 [2021-12-07 01:34:18,010 INFO L226 Difference]: Without dead ends: 145 [2021-12-07 01:34:18,013 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 01:34:18,016 INFO L933 BasicCegarLoop]: 250 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, 250 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 01:34:18,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:18,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-12-07 01:34:18,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-12-07 01:34:18,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 144 states have internal predecessors, (250), 0 states have call successors, (0), 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 01:34:18,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 250 transitions. [2021-12-07 01:34:18,058 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 250 transitions. Word has length 37 [2021-12-07 01:34:18,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:18,059 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 250 transitions. [2021-12-07 01:34:18,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 01:34:18,059 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 250 transitions. [2021-12-07 01:34:18,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-07 01:34:18,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:18,062 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] [2021-12-07 01:34:18,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:34:18,062 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:18,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:18,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1630361906, now seen corresponding path program 1 times [2021-12-07 01:34:18,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:18,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38017895] [2021-12-07 01:34:18,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:18,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:18,155 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 01:34:18,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:18,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38017895] [2021-12-07 01:34:18,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38017895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:18,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:18,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:34:18,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546100360] [2021-12-07 01:34:18,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:18,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:34:18,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:18,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:34:18,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:18,159 INFO L87 Difference]: Start difference. First operand 145 states and 250 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 01:34:18,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:18,222 INFO L93 Difference]: Finished difference Result 234 states and 396 transitions. [2021-12-07 01:34:18,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:34:18,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-12-07 01:34:18,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:18,225 INFO L225 Difference]: With dead ends: 234 [2021-12-07 01:34:18,225 INFO L226 Difference]: Without dead ends: 145 [2021-12-07 01:34:18,226 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 01:34:18,227 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 3 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:18,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 959 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:18,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-12-07 01:34:18,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-12-07 01:34:18,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5277777777777777) internal successors, (220), 144 states have internal predecessors, (220), 0 states have call successors, (0), 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 01:34:18,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 220 transitions. [2021-12-07 01:34:18,248 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 220 transitions. Word has length 37 [2021-12-07 01:34:18,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:18,249 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 220 transitions. [2021-12-07 01:34:18,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 01:34:18,249 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 220 transitions. [2021-12-07 01:34:18,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-07 01:34:18,251 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:18,251 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] [2021-12-07 01:34:18,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 01:34:18,252 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:18,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:18,252 INFO L85 PathProgramCache]: Analyzing trace with hash 190573204, now seen corresponding path program 1 times [2021-12-07 01:34:18,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:18,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663602401] [2021-12-07 01:34:18,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:18,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:18,336 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 01:34:18,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:18,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663602401] [2021-12-07 01:34:18,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663602401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:18,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:18,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:18,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433789903] [2021-12-07 01:34:18,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:18,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:18,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:18,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:18,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:18,339 INFO L87 Difference]: Start difference. First operand 145 states and 220 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 01:34:18,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:18,377 INFO L93 Difference]: Finished difference Result 305 states and 486 transitions. [2021-12-07 01:34:18,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:18,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-12-07 01:34:18,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:18,380 INFO L225 Difference]: With dead ends: 305 [2021-12-07 01:34:18,380 INFO L226 Difference]: Without dead ends: 220 [2021-12-07 01:34:18,381 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 01:34:18,383 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 115 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 388 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 01:34:18,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 388 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:18,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-12-07 01:34:18,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 217. [2021-12-07 01:34:18,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.5555555555555556) internal successors, (336), 216 states have internal predecessors, (336), 0 states have call successors, (0), 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 01:34:18,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 336 transitions. [2021-12-07 01:34:18,400 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 336 transitions. Word has length 66 [2021-12-07 01:34:18,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:18,401 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 336 transitions. [2021-12-07 01:34:18,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 01:34:18,401 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 336 transitions. [2021-12-07 01:34:18,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 01:34:18,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:18,405 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] [2021-12-07 01:34:18,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 01:34:18,405 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:18,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:18,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1527919177, now seen corresponding path program 1 times [2021-12-07 01:34:18,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:18,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994831255] [2021-12-07 01:34:18,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:18,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:18,491 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 01:34:18,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:18,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994831255] [2021-12-07 01:34:18,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994831255] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:18,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:18,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:18,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845252227] [2021-12-07 01:34:18,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:18,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:18,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:18,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:18,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:18,493 INFO L87 Difference]: Start difference. First operand 217 states and 336 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 01:34:18,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:18,516 INFO L93 Difference]: Finished difference Result 515 states and 824 transitions. [2021-12-07 01:34:18,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:18,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-12-07 01:34:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:18,519 INFO L225 Difference]: With dead ends: 515 [2021-12-07 01:34:18,519 INFO L226 Difference]: Without dead ends: 358 [2021-12-07 01:34:18,520 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 01:34:18,521 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 117 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 401 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 01:34:18,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 401 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:18,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-12-07 01:34:18,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 354. [2021-12-07 01:34:18,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 1.5835694050991502) internal successors, (559), 353 states have internal predecessors, (559), 0 states have call successors, (0), 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 01:34:18,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 559 transitions. [2021-12-07 01:34:18,538 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 559 transitions. Word has length 68 [2021-12-07 01:34:18,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:18,538 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 559 transitions. [2021-12-07 01:34:18,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 01:34:18,538 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 559 transitions. [2021-12-07 01:34:18,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-07 01:34:18,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:18,540 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] [2021-12-07 01:34:18,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 01:34:18,540 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:18,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:18,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1063335298, now seen corresponding path program 1 times [2021-12-07 01:34:18,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:18,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089245415] [2021-12-07 01:34:18,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:18,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:18,590 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 01:34:18,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:18,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089245415] [2021-12-07 01:34:18,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089245415] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:18,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:18,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:18,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547989946] [2021-12-07 01:34:18,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:18,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:18,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:18,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:18,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:18,592 INFO L87 Difference]: Start difference. First operand 354 states and 559 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 01:34:18,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:18,625 INFO L93 Difference]: Finished difference Result 910 states and 1465 transitions. [2021-12-07 01:34:18,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:18,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-12-07 01:34:18,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:18,628 INFO L225 Difference]: With dead ends: 910 [2021-12-07 01:34:18,628 INFO L226 Difference]: Without dead ends: 616 [2021-12-07 01:34:18,629 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 01:34:18,630 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 111 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 402 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 01:34:18,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 402 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:18,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-12-07 01:34:18,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 610. [2021-12-07 01:34:18,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 1.5944170771756978) internal successors, (971), 609 states have internal predecessors, (971), 0 states have call successors, (0), 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 01:34:18,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 971 transitions. [2021-12-07 01:34:18,652 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 971 transitions. Word has length 70 [2021-12-07 01:34:18,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:18,652 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 971 transitions. [2021-12-07 01:34:18,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 01:34:18,653 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 971 transitions. [2021-12-07 01:34:18,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-07 01:34:18,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:18,654 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] [2021-12-07 01:34:18,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 01:34:18,654 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:18,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:18,654 INFO L85 PathProgramCache]: Analyzing trace with hash 845837107, now seen corresponding path program 1 times [2021-12-07 01:34:18,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:18,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462547502] [2021-12-07 01:34:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:18,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:18,707 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 01:34:18,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:18,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462547502] [2021-12-07 01:34:18,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462547502] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:18,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:18,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:34:18,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67196576] [2021-12-07 01:34:18,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:18,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:34:18,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:18,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:34:18,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:18,709 INFO L87 Difference]: Start difference. First operand 610 states and 971 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 01:34:18,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:18,851 INFO L93 Difference]: Finished difference Result 2622 states and 4281 transitions. [2021-12-07 01:34:18,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:34:18,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-12-07 01:34:18,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:18,861 INFO L225 Difference]: With dead ends: 2622 [2021-12-07 01:34:18,861 INFO L226 Difference]: Without dead ends: 2072 [2021-12-07 01:34:18,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:34:18,864 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 936 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:18,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [936 Valid, 1286 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:34:18,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2021-12-07 01:34:18,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1092. [2021-12-07 01:34:18,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 1091 states have (on average 1.6076993583868011) internal successors, (1754), 1091 states have internal predecessors, (1754), 0 states have call successors, (0), 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 01:34:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1754 transitions. [2021-12-07 01:34:18,903 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1754 transitions. Word has length 72 [2021-12-07 01:34:18,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:18,904 INFO L470 AbstractCegarLoop]: Abstraction has 1092 states and 1754 transitions. [2021-12-07 01:34:18,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 01:34:18,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1754 transitions. [2021-12-07 01:34:18,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-07 01:34:18,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:18,905 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] [2021-12-07 01:34:18,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 01:34:18,905 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:18,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:18,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1471686026, now seen corresponding path program 1 times [2021-12-07 01:34:18,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:18,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992683139] [2021-12-07 01:34:18,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:18,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:18,957 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 01:34:18,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:18,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992683139] [2021-12-07 01:34:18,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992683139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:18,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:18,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:34:18,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566843429] [2021-12-07 01:34:18,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:18,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:34:18,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:18,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:34:18,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:34:18,959 INFO L87 Difference]: Start difference. First operand 1092 states and 1754 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 01:34:19,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:19,025 INFO L93 Difference]: Finished difference Result 3182 states and 5186 transitions. [2021-12-07 01:34:19,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:34:19,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-12-07 01:34:19,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:19,035 INFO L225 Difference]: With dead ends: 3182 [2021-12-07 01:34:19,035 INFO L226 Difference]: Without dead ends: 2150 [2021-12-07 01:34:19,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:19,038 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 413 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 638 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 01:34:19,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 638 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:19,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2021-12-07 01:34:19,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 1612. [2021-12-07 01:34:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1611 states have (on average 1.6157666045934203) internal successors, (2603), 1611 states have internal predecessors, (2603), 0 states have call successors, (0), 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 01:34:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2603 transitions. [2021-12-07 01:34:19,088 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2603 transitions. Word has length 73 [2021-12-07 01:34:19,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:19,088 INFO L470 AbstractCegarLoop]: Abstraction has 1612 states and 2603 transitions. [2021-12-07 01:34:19,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 01:34:19,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2603 transitions. [2021-12-07 01:34:19,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-07 01:34:19,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:19,090 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] [2021-12-07 01:34:19,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 01:34:19,090 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:19,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:19,091 INFO L85 PathProgramCache]: Analyzing trace with hash -131454774, now seen corresponding path program 1 times [2021-12-07 01:34:19,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:19,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516003408] [2021-12-07 01:34:19,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:19,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:19,135 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 01:34:19,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:19,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516003408] [2021-12-07 01:34:19,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516003408] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:19,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:19,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:34:19,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704008413] [2021-12-07 01:34:19,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:19,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:34:19,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:19,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:34:19,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:34:19,138 INFO L87 Difference]: Start difference. First operand 1612 states and 2603 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 01:34:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:19,258 INFO L93 Difference]: Finished difference Result 4676 states and 7610 transitions. [2021-12-07 01:34:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:34:19,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-12-07 01:34:19,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:19,273 INFO L225 Difference]: With dead ends: 4676 [2021-12-07 01:34:19,274 INFO L226 Difference]: Without dead ends: 3124 [2021-12-07 01:34:19,276 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 01:34:19,276 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 411 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 724 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 01:34:19,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 724 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:19,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2021-12-07 01:34:19,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 2356. [2021-12-07 01:34:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 2355 states have (on average 1.6148619957537156) internal successors, (3803), 2355 states have internal predecessors, (3803), 0 states have call successors, (0), 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 01:34:19,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3803 transitions. [2021-12-07 01:34:19,352 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3803 transitions. Word has length 74 [2021-12-07 01:34:19,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:19,352 INFO L470 AbstractCegarLoop]: Abstraction has 2356 states and 3803 transitions. [2021-12-07 01:34:19,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 01:34:19,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3803 transitions. [2021-12-07 01:34:19,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-07 01:34:19,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:19,355 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] [2021-12-07 01:34:19,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 01:34:19,355 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:19,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:19,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1364954579, now seen corresponding path program 1 times [2021-12-07 01:34:19,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:19,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121474974] [2021-12-07 01:34:19,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:19,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:19,402 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 01:34:19,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:19,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121474974] [2021-12-07 01:34:19,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121474974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:19,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:19,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:34:19,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181358208] [2021-12-07 01:34:19,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:19,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:34:19,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:19,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:34:19,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:34:19,403 INFO L87 Difference]: Start difference. First operand 2356 states and 3803 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 01:34:19,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:19,564 INFO L93 Difference]: Finished difference Result 6796 states and 11038 transitions. [2021-12-07 01:34:19,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:34:19,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-12-07 01:34:19,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:19,591 INFO L225 Difference]: With dead ends: 6796 [2021-12-07 01:34:19,591 INFO L226 Difference]: Without dead ends: 4500 [2021-12-07 01:34:19,595 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 01:34:19,596 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 409 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 733 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 01:34:19,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 733 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:19,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4500 states. [2021-12-07 01:34:19,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4500 to 3412. [2021-12-07 01:34:19,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3411 states have (on average 1.612723541483436) internal successors, (5501), 3411 states have internal predecessors, (5501), 0 states have call successors, (0), 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 01:34:19,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5501 transitions. [2021-12-07 01:34:19,725 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5501 transitions. Word has length 75 [2021-12-07 01:34:19,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:19,725 INFO L470 AbstractCegarLoop]: Abstraction has 3412 states and 5501 transitions. [2021-12-07 01:34:19,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 01:34:19,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5501 transitions. [2021-12-07 01:34:19,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-07 01:34:19,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:19,727 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] [2021-12-07 01:34:19,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 01:34:19,727 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:19,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:19,727 INFO L85 PathProgramCache]: Analyzing trace with hash 915332421, now seen corresponding path program 1 times [2021-12-07 01:34:19,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:19,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141059980] [2021-12-07 01:34:19,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:19,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:19,759 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 01:34:19,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:19,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141059980] [2021-12-07 01:34:19,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141059980] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:19,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:19,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:19,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610760709] [2021-12-07 01:34:19,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:19,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:19,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:19,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:19,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:19,761 INFO L87 Difference]: Start difference. First operand 3412 states and 5501 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 01:34:19,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:19,916 INFO L93 Difference]: Finished difference Result 7762 states and 12522 transitions. [2021-12-07 01:34:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:19,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-12-07 01:34:19,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:19,940 INFO L225 Difference]: With dead ends: 7762 [2021-12-07 01:34:19,940 INFO L226 Difference]: Without dead ends: 5340 [2021-12-07 01:34:19,943 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 01:34:19,944 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 110 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 443 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 01:34:19,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 443 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:19,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5340 states. [2021-12-07 01:34:20,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5340 to 5338. [2021-12-07 01:34:20,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5337 states have (on average 1.6001498969458496) internal successors, (8540), 5337 states have internal predecessors, (8540), 0 states have call successors, (0), 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 01:34:20,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 8540 transitions. [2021-12-07 01:34:20,105 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 8540 transitions. Word has length 76 [2021-12-07 01:34:20,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:20,105 INFO L470 AbstractCegarLoop]: Abstraction has 5338 states and 8540 transitions. [2021-12-07 01:34:20,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 01:34:20,105 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 8540 transitions. [2021-12-07 01:34:20,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-07 01:34:20,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:20,106 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] [2021-12-07 01:34:20,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 01:34:20,107 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:20,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:20,107 INFO L85 PathProgramCache]: Analyzing trace with hash -318395451, now seen corresponding path program 1 times [2021-12-07 01:34:20,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:20,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898376041] [2021-12-07 01:34:20,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:20,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:20,135 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 01:34:20,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:20,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898376041] [2021-12-07 01:34:20,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898376041] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:20,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:20,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:20,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182773291] [2021-12-07 01:34:20,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:20,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:20,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:20,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:20,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:20,136 INFO L87 Difference]: Start difference. First operand 5338 states and 8540 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 01:34:20,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:20,351 INFO L93 Difference]: Finished difference Result 11658 states and 18702 transitions. [2021-12-07 01:34:20,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:20,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-12-07 01:34:20,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:20,384 INFO L225 Difference]: With dead ends: 11658 [2021-12-07 01:34:20,384 INFO L226 Difference]: Without dead ends: 7904 [2021-12-07 01:34:20,388 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 01:34:20,389 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 116 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 477 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 01:34:20,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 477 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:20,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7904 states. [2021-12-07 01:34:20,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7904 to 7902. [2021-12-07 01:34:20,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7902 states, 7901 states have (on average 1.5919503860270852) internal successors, (12578), 7901 states have internal predecessors, (12578), 0 states have call successors, (0), 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 01:34:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7902 states to 7902 states and 12578 transitions. [2021-12-07 01:34:20,633 INFO L78 Accepts]: Start accepts. Automaton has 7902 states and 12578 transitions. Word has length 76 [2021-12-07 01:34:20,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:20,633 INFO L470 AbstractCegarLoop]: Abstraction has 7902 states and 12578 transitions. [2021-12-07 01:34:20,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 01:34:20,633 INFO L276 IsEmpty]: Start isEmpty. Operand 7902 states and 12578 transitions. [2021-12-07 01:34:20,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-07 01:34:20,634 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:20,634 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] [2021-12-07 01:34:20,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 01:34:20,634 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:20,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:20,635 INFO L85 PathProgramCache]: Analyzing trace with hash 700947013, now seen corresponding path program 1 times [2021-12-07 01:34:20,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:20,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142075570] [2021-12-07 01:34:20,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:20,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:20,661 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 01:34:20,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:20,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142075570] [2021-12-07 01:34:20,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142075570] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:20,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:20,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:20,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250641919] [2021-12-07 01:34:20,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:20,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:20,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:20,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:20,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:20,663 INFO L87 Difference]: Start difference. First operand 7902 states and 12578 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 01:34:20,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:20,956 INFO L93 Difference]: Finished difference Result 17511 states and 28108 transitions. [2021-12-07 01:34:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:20,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-12-07 01:34:20,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:20,983 INFO L225 Difference]: With dead ends: 17511 [2021-12-07 01:34:20,983 INFO L226 Difference]: Without dead ends: 11763 [2021-12-07 01:34:20,990 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 01:34:20,991 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 122 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 503 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 01:34:20,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 503 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:21,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11763 states. [2021-12-07 01:34:21,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11763 to 11761. [2021-12-07 01:34:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11761 states, 11760 states have (on average 1.5872448979591838) internal successors, (18666), 11760 states have internal predecessors, (18666), 0 states have call successors, (0), 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 01:34:21,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11761 states to 11761 states and 18666 transitions. [2021-12-07 01:34:21,300 INFO L78 Accepts]: Start accepts. Automaton has 11761 states and 18666 transitions. Word has length 76 [2021-12-07 01:34:21,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:21,300 INFO L470 AbstractCegarLoop]: Abstraction has 11761 states and 18666 transitions. [2021-12-07 01:34:21,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 01:34:21,300 INFO L276 IsEmpty]: Start isEmpty. Operand 11761 states and 18666 transitions. [2021-12-07 01:34:21,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-07 01:34:21,301 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:21,301 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 01:34:21,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 01:34:21,301 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:21,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:21,302 INFO L85 PathProgramCache]: Analyzing trace with hash 411123109, now seen corresponding path program 1 times [2021-12-07 01:34:21,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:21,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789786974] [2021-12-07 01:34:21,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:21,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:21,380 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 01:34:21,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:21,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789786974] [2021-12-07 01:34:21,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789786974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:21,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:21,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:34:21,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893966274] [2021-12-07 01:34:21,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:21,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:34:21,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:21,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:34:21,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:21,383 INFO L87 Difference]: Start difference. First operand 11761 states and 18666 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 01:34:21,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:21,645 INFO L93 Difference]: Finished difference Result 23438 states and 37217 transitions. [2021-12-07 01:34:21,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:34:21,645 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 01:34:21,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:21,665 INFO L225 Difference]: With dead ends: 23438 [2021-12-07 01:34:21,665 INFO L226 Difference]: Without dead ends: 11763 [2021-12-07 01:34:21,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:34:21,676 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 301 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:21,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 591 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:21,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11763 states. [2021-12-07 01:34:21,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11763 to 11761. [2021-12-07 01:34:21,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11761 states, 11760 states have (on average 1.5766156462585035) internal successors, (18541), 11760 states have internal predecessors, (18541), 0 states have call successors, (0), 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 01:34:22,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11761 states to 11761 states and 18541 transitions. [2021-12-07 01:34:22,006 INFO L78 Accepts]: Start accepts. Automaton has 11761 states and 18541 transitions. Word has length 77 [2021-12-07 01:34:22,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:22,006 INFO L470 AbstractCegarLoop]: Abstraction has 11761 states and 18541 transitions. [2021-12-07 01:34:22,006 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 01:34:22,007 INFO L276 IsEmpty]: Start isEmpty. Operand 11761 states and 18541 transitions. [2021-12-07 01:34:22,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-07 01:34:22,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:22,007 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] [2021-12-07 01:34:22,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 01:34:22,008 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:22,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:22,008 INFO L85 PathProgramCache]: Analyzing trace with hash 224831213, now seen corresponding path program 1 times [2021-12-07 01:34:22,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:22,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386571154] [2021-12-07 01:34:22,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:22,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:22,085 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 01:34:22,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:22,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386571154] [2021-12-07 01:34:22,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386571154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:22,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:22,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:34:22,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094990916] [2021-12-07 01:34:22,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:22,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:34:22,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:22,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:34:22,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:22,087 INFO L87 Difference]: Start difference. First operand 11761 states and 18541 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 01:34:22,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:22,485 INFO L93 Difference]: Finished difference Result 33682 states and 53251 transitions. [2021-12-07 01:34:22,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:34:22,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-12-07 01:34:22,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:22,520 INFO L225 Difference]: With dead ends: 33682 [2021-12-07 01:34:22,520 INFO L226 Difference]: Without dead ends: 22007 [2021-12-07 01:34:22,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:34:22,532 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 187 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:22,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 787 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:22,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22007 states. [2021-12-07 01:34:22,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22007 to 22005. [2021-12-07 01:34:22,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22005 states, 22004 states have (on average 1.5649881839665516) internal successors, (34436), 22004 states have internal predecessors, (34436), 0 states have call successors, (0), 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 01:34:22,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22005 states to 22005 states and 34436 transitions. [2021-12-07 01:34:22,955 INFO L78 Accepts]: Start accepts. Automaton has 22005 states and 34436 transitions. Word has length 80 [2021-12-07 01:34:22,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:22,955 INFO L470 AbstractCegarLoop]: Abstraction has 22005 states and 34436 transitions. [2021-12-07 01:34:22,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 01:34:22,955 INFO L276 IsEmpty]: Start isEmpty. Operand 22005 states and 34436 transitions. [2021-12-07 01:34:22,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-07 01:34:22,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:22,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:34:22,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 01:34:22,956 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:22,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:22,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2048742578, now seen corresponding path program 1 times [2021-12-07 01:34:22,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:22,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206924297] [2021-12-07 01:34:22,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:22,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:23,014 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 01:34:23,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:23,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206924297] [2021-12-07 01:34:23,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206924297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:23,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:23,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:34:23,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892071364] [2021-12-07 01:34:23,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:23,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:34:23,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:23,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:34:23,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:23,016 INFO L87 Difference]: Start difference. First operand 22005 states and 34436 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 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 01:34:23,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:23,794 INFO L93 Difference]: Finished difference Result 42912 states and 66453 transitions. [2021-12-07 01:34:23,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:34:23,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-12-07 01:34:23,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:23,846 INFO L225 Difference]: With dead ends: 42912 [2021-12-07 01:34:23,846 INFO L226 Difference]: Without dead ends: 42910 [2021-12-07 01:34:23,856 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 01:34:23,857 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 368 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:23,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 950 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:23,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42910 states. [2021-12-07 01:34:24,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42910 to 23091. [2021-12-07 01:34:24,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23091 states, 23090 states have (on average 1.5380251190991772) internal successors, (35513), 23090 states have internal predecessors, (35513), 0 states have call successors, (0), 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 01:34:24,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23091 states to 23091 states and 35513 transitions. [2021-12-07 01:34:24,529 INFO L78 Accepts]: Start accepts. Automaton has 23091 states and 35513 transitions. Word has length 81 [2021-12-07 01:34:24,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:24,529 INFO L470 AbstractCegarLoop]: Abstraction has 23091 states and 35513 transitions. [2021-12-07 01:34:24,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 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 01:34:24,529 INFO L276 IsEmpty]: Start isEmpty. Operand 23091 states and 35513 transitions. [2021-12-07 01:34:24,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-07 01:34:24,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:24,531 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-07 01:34:24,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-07 01:34:24,532 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:24,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:24,532 INFO L85 PathProgramCache]: Analyzing trace with hash -601727771, now seen corresponding path program 1 times [2021-12-07 01:34:24,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:24,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917663268] [2021-12-07 01:34:24,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:24,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:24,583 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-07 01:34:24,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:24,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917663268] [2021-12-07 01:34:24,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917663268] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:24,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:24,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:34:24,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124307318] [2021-12-07 01:34:24,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:24,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:34:24,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:24,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:34:24,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:24,585 INFO L87 Difference]: Start difference. First operand 23091 states and 35513 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:25,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:25,495 INFO L93 Difference]: Finished difference Result 56431 states and 87041 transitions. [2021-12-07 01:34:25,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:34:25,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-07 01:34:25,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:25,545 INFO L225 Difference]: With dead ends: 56431 [2021-12-07 01:34:25,545 INFO L226 Difference]: Without dead ends: 45489 [2021-12-07 01:34:25,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:34:25,563 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 522 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:25,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 988 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:25,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45489 states. [2021-12-07 01:34:26,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45489 to 35483. [2021-12-07 01:34:26,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35483 states, 35482 states have (on average 1.536525562256919) internal successors, (54519), 35482 states have internal predecessors, (54519), 0 states have call successors, (0), 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 01:34:26,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35483 states to 35483 states and 54519 transitions. [2021-12-07 01:34:26,519 INFO L78 Accepts]: Start accepts. Automaton has 35483 states and 54519 transitions. Word has length 109 [2021-12-07 01:34:26,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:26,520 INFO L470 AbstractCegarLoop]: Abstraction has 35483 states and 54519 transitions. [2021-12-07 01:34:26,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:26,520 INFO L276 IsEmpty]: Start isEmpty. Operand 35483 states and 54519 transitions. [2021-12-07 01:34:26,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-07 01:34:26,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:26,522 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-07 01:34:26,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 01:34:26,522 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:26,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:26,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1835455643, now seen corresponding path program 1 times [2021-12-07 01:34:26,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:26,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827598688] [2021-12-07 01:34:26,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:26,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:26,572 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:34:26,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:26,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827598688] [2021-12-07 01:34:26,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827598688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:26,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:26,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:34:26,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484035096] [2021-12-07 01:34:26,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:26,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:34:26,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:26,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:34:26,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:26,575 INFO L87 Difference]: Start difference. First operand 35483 states and 54519 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 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 01:34:27,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:27,748 INFO L93 Difference]: Finished difference Result 60807 states and 93801 transitions. [2021-12-07 01:34:27,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:34:27,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-07 01:34:27,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:27,815 INFO L225 Difference]: With dead ends: 60807 [2021-12-07 01:34:27,815 INFO L226 Difference]: Without dead ends: 49865 [2021-12-07 01:34:27,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:34:27,837 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 522 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:27,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 984 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:27,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49865 states. [2021-12-07 01:34:29,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49865 to 48067. [2021-12-07 01:34:29,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48067 states, 48066 states have (on average 1.5370324137644074) internal successors, (73879), 48066 states have internal predecessors, (73879), 0 states have call successors, (0), 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 01:34:29,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48067 states to 48067 states and 73879 transitions. [2021-12-07 01:34:29,173 INFO L78 Accepts]: Start accepts. Automaton has 48067 states and 73879 transitions. Word has length 109 [2021-12-07 01:34:29,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:29,173 INFO L470 AbstractCegarLoop]: Abstraction has 48067 states and 73879 transitions. [2021-12-07 01:34:29,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 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 01:34:29,173 INFO L276 IsEmpty]: Start isEmpty. Operand 48067 states and 73879 transitions. [2021-12-07 01:34:29,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-07 01:34:29,175 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:29,175 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-07 01:34:29,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-07 01:34:29,175 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:29,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:29,176 INFO L85 PathProgramCache]: Analyzing trace with hash -816113179, now seen corresponding path program 1 times [2021-12-07 01:34:29,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:29,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920648433] [2021-12-07 01:34:29,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:29,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:34:29,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:29,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920648433] [2021-12-07 01:34:29,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920648433] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:29,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:29,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:34:29,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228963409] [2021-12-07 01:34:29,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:29,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:34:29,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:29,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:34:29,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:29,221 INFO L87 Difference]: Start difference. First operand 48067 states and 73879 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 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 01:34:30,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:30,339 INFO L93 Difference]: Finished difference Result 68235 states and 105419 transitions. [2021-12-07 01:34:30,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:34:30,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-07 01:34:30,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:30,404 INFO L225 Difference]: With dead ends: 68235 [2021-12-07 01:34:30,404 INFO L226 Difference]: Without dead ends: 57033 [2021-12-07 01:34:30,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:34:30,415 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 515 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:30,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 970 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:30,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57033 states. [2021-12-07 01:34:31,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57033 to 55235. [2021-12-07 01:34:31,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55235 states, 55234 states have (on average 1.539396024188) internal successors, (85027), 55234 states have internal predecessors, (85027), 0 states have call successors, (0), 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 01:34:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55235 states to 55235 states and 85027 transitions. [2021-12-07 01:34:31,752 INFO L78 Accepts]: Start accepts. Automaton has 55235 states and 85027 transitions. Word has length 109 [2021-12-07 01:34:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:31,752 INFO L470 AbstractCegarLoop]: Abstraction has 55235 states and 85027 transitions. [2021-12-07 01:34:31,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 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 01:34:31,752 INFO L276 IsEmpty]: Start isEmpty. Operand 55235 states and 85027 transitions. [2021-12-07 01:34:31,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-07 01:34:31,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:31,754 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-07 01:34:31,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-07 01:34:31,754 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:31,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:31,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1029835514, now seen corresponding path program 1 times [2021-12-07 01:34:31,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:31,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792896239] [2021-12-07 01:34:31,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:31,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:34:31,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:31,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792896239] [2021-12-07 01:34:31,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792896239] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:31,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:31,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:31,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304557834] [2021-12-07 01:34:31,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:31,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:31,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:31,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:31,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:31,788 INFO L87 Difference]: Start difference. First operand 55235 states and 85027 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:33,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:33,573 INFO L93 Difference]: Finished difference Result 121863 states and 188380 transitions. [2021-12-07 01:34:33,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:33,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-07 01:34:33,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:33,684 INFO L225 Difference]: With dead ends: 121863 [2021-12-07 01:34:33,685 INFO L226 Difference]: Without dead ends: 88933 [2021-12-07 01:34:33,704 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 01:34:33,704 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 99 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:33,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 398 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:33,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88933 states. [2021-12-07 01:34:36,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88933 to 88728. [2021-12-07 01:34:36,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88728 states, 88727 states have (on average 1.5408612936310255) internal successors, (136716), 88727 states have internal predecessors, (136716), 0 states have call successors, (0), 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 01:34:36,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88728 states to 88728 states and 136716 transitions. [2021-12-07 01:34:36,558 INFO L78 Accepts]: Start accepts. Automaton has 88728 states and 136716 transitions. Word has length 110 [2021-12-07 01:34:36,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:36,558 INFO L470 AbstractCegarLoop]: Abstraction has 88728 states and 136716 transitions. [2021-12-07 01:34:36,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:36,559 INFO L276 IsEmpty]: Start isEmpty. Operand 88728 states and 136716 transitions. [2021-12-07 01:34:36,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-07 01:34:36,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:36,561 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-07 01:34:36,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-07 01:34:36,561 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:36,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:36,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1452537340, now seen corresponding path program 1 times [2021-12-07 01:34:36,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:36,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38476105] [2021-12-07 01:34:36,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:36,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:36,604 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:34:36,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:36,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38476105] [2021-12-07 01:34:36,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38476105] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:36,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:36,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:34:36,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360605992] [2021-12-07 01:34:36,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:36,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:34:36,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:36,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:34:36,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:34:36,606 INFO L87 Difference]: Start difference. First operand 88728 states and 136716 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:38,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:38,951 INFO L93 Difference]: Finished difference Result 158229 states and 244725 transitions. [2021-12-07 01:34:38,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:34:38,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-07 01:34:38,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:39,123 INFO L225 Difference]: With dead ends: 158229 [2021-12-07 01:34:39,123 INFO L226 Difference]: Without dead ends: 121573 [2021-12-07 01:34:39,164 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 01:34:39,165 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 224 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:39,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 745 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:39,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121573 states. [2021-12-07 01:34:41,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121573 to 117928. [2021-12-07 01:34:42,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117928 states, 117927 states have (on average 1.5393845345001569) internal successors, (181535), 117927 states have internal predecessors, (181535), 0 states have call successors, (0), 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 01:34:42,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117928 states to 117928 states and 181535 transitions. [2021-12-07 01:34:42,262 INFO L78 Accepts]: Start accepts. Automaton has 117928 states and 181535 transitions. Word has length 110 [2021-12-07 01:34:42,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:42,262 INFO L470 AbstractCegarLoop]: Abstraction has 117928 states and 181535 transitions. [2021-12-07 01:34:42,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:42,262 INFO L276 IsEmpty]: Start isEmpty. Operand 117928 states and 181535 transitions. [2021-12-07 01:34:42,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-07 01:34:42,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:42,264 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-07 01:34:42,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-07 01:34:42,264 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:42,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:42,265 INFO L85 PathProgramCache]: Analyzing trace with hash 126590076, now seen corresponding path program 1 times [2021-12-07 01:34:42,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:42,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835328320] [2021-12-07 01:34:42,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:42,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:34:42,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:42,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835328320] [2021-12-07 01:34:42,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835328320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:42,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:42,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:34:42,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419455382] [2021-12-07 01:34:42,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:42,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:34:42,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:42,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:34:42,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:34:42,303 INFO L87 Difference]: Start difference. First operand 117928 states and 181535 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 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 01:34:45,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:45,137 INFO L93 Difference]: Finished difference Result 180491 states and 278790 transitions. [2021-12-07 01:34:45,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:34:45,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 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 111 [2021-12-07 01:34:45,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:45,456 INFO L225 Difference]: With dead ends: 180491 [2021-12-07 01:34:45,456 INFO L226 Difference]: Without dead ends: 146381 [2021-12-07 01:34:45,482 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 01:34:45,483 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 229 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:45,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 747 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:45,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146381 states. [2021-12-07 01:34:49,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146381 to 139225. [2021-12-07 01:34:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139225 states, 139224 states have (on average 1.5384488306613802) internal successors, (214189), 139224 states have internal predecessors, (214189), 0 states have call successors, (0), 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 01:34:49,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139225 states to 139225 states and 214189 transitions. [2021-12-07 01:34:49,506 INFO L78 Accepts]: Start accepts. Automaton has 139225 states and 214189 transitions. Word has length 111 [2021-12-07 01:34:49,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:49,506 INFO L470 AbstractCegarLoop]: Abstraction has 139225 states and 214189 transitions. [2021-12-07 01:34:49,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 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 01:34:49,506 INFO L276 IsEmpty]: Start isEmpty. Operand 139225 states and 214189 transitions. [2021-12-07 01:34:49,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-07 01:34:49,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:49,508 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-07 01:34:49,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-07 01:34:49,508 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:49,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:49,509 INFO L85 PathProgramCache]: Analyzing trace with hash -894478278, now seen corresponding path program 1 times [2021-12-07 01:34:49,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:49,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704028866] [2021-12-07 01:34:49,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:49,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:49,538 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:34:49,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:49,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704028866] [2021-12-07 01:34:49,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704028866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:49,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:49,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:49,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566032142] [2021-12-07 01:34:49,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:49,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:49,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:49,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:49,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:49,540 INFO L87 Difference]: Start difference. First operand 139225 states and 214189 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 01:34:54,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:54,225 INFO L93 Difference]: Finished difference Result 294855 states and 454462 transitions. [2021-12-07 01:34:54,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:54,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 111 [2021-12-07 01:34:54,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:54,568 INFO L225 Difference]: With dead ends: 294855 [2021-12-07 01:34:54,568 INFO L226 Difference]: Without dead ends: 228937 [2021-12-07 01:34:54,633 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 01:34:54,634 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 99 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:54,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 399 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:54,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228937 states. [2021-12-07 01:35:00,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228937 to 228407. [2021-12-07 01:35:00,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228407 states, 228406 states have (on average 1.5366890537026172) internal successors, (350989), 228406 states have internal predecessors, (350989), 0 states have call successors, (0), 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 01:35:00,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228407 states to 228407 states and 350989 transitions. [2021-12-07 01:35:00,937 INFO L78 Accepts]: Start accepts. Automaton has 228407 states and 350989 transitions. Word has length 111 [2021-12-07 01:35:00,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:35:00,937 INFO L470 AbstractCegarLoop]: Abstraction has 228407 states and 350989 transitions. [2021-12-07 01:35:00,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 01:35:00,937 INFO L276 IsEmpty]: Start isEmpty. Operand 228407 states and 350989 transitions. [2021-12-07 01:35:00,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-07 01:35:00,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:35:00,939 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-07 01:35:00,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-07 01:35:00,940 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:35:00,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:35:00,940 INFO L85 PathProgramCache]: Analyzing trace with hash 240213189, now seen corresponding path program 1 times [2021-12-07 01:35:00,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:35:00,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982870557] [2021-12-07 01:35:00,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:35:00,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:35:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:35:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:35:00,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:35:00,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982870557] [2021-12-07 01:35:00,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982870557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:35:00,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:35:00,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:35:00,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385965885] [2021-12-07 01:35:00,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:35:00,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:35:00,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:35:00,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:35:00,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:35:00,969 INFO L87 Difference]: Start difference. First operand 228407 states and 350989 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 01:35:10,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:35:10,934 INFO L93 Difference]: Finished difference Result 676572 states and 1037942 transitions. [2021-12-07 01:35:10,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:35:10,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-12-07 01:35:10,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:35:11,705 INFO L225 Difference]: With dead ends: 676572 [2021-12-07 01:35:11,705 INFO L226 Difference]: Without dead ends: 448241 [2021-12-07 01:35:11,851 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 01:35:11,851 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 147 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:35:11,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 494 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:35:12,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448241 states. [2021-12-07 01:35:23,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448241 to 448239. [2021-12-07 01:35:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448239 states, 448238 states have (on average 1.5235946082215253) internal successors, (682933), 448238 states have internal predecessors, (682933), 0 states have call successors, (0), 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 01:35:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448239 states to 448239 states and 682933 transitions. [2021-12-07 01:35:25,048 INFO L78 Accepts]: Start accepts. Automaton has 448239 states and 682933 transitions. Word has length 111 [2021-12-07 01:35:25,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:35:25,048 INFO L470 AbstractCegarLoop]: Abstraction has 448239 states and 682933 transitions. [2021-12-07 01:35:25,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 01:35:25,048 INFO L276 IsEmpty]: Start isEmpty. Operand 448239 states and 682933 transitions. [2021-12-07 01:35:25,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-07 01:35:25,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:35:25,051 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-07 01:35:25,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-07 01:35:25,052 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:35:25,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:35:25,052 INFO L85 PathProgramCache]: Analyzing trace with hash -691609493, now seen corresponding path program 1 times [2021-12-07 01:35:25,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:35:25,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455758741] [2021-12-07 01:35:25,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:35:25,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:35:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:35:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:35:25,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:35:25,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455758741] [2021-12-07 01:35:25,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455758741] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:35:25,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:35:25,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:35:25,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955470859] [2021-12-07 01:35:25,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:35:25,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:35:25,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:35:25,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:35:25,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:35:25,081 INFO L87 Difference]: Start difference. First operand 448239 states and 682933 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 01:35:45,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:35:45,699 INFO L93 Difference]: Finished difference Result 1326396 states and 2017051 transitions. [2021-12-07 01:35:45,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:35:45,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-12-07 01:35:45,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:35:47,360 INFO L225 Difference]: With dead ends: 1326396 [2021-12-07 01:35:47,361 INFO L226 Difference]: Without dead ends: 878305 [2021-12-07 01:35:47,588 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 01:35:47,588 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 166 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:35:47,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 527 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:35:48,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878305 states. [2021-12-07 01:36:12,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878305 to 878303. [2021-12-07 01:36:12,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878303 states, 878302 states have (on average 1.509406787187095) internal successors, (1325715), 878302 states have internal predecessors, (1325715), 0 states have call successors, (0), 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 01:36:15,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878303 states to 878303 states and 1325715 transitions. [2021-12-07 01:36:15,049 INFO L78 Accepts]: Start accepts. Automaton has 878303 states and 1325715 transitions. Word has length 111 [2021-12-07 01:36:15,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:15,049 INFO L470 AbstractCegarLoop]: Abstraction has 878303 states and 1325715 transitions. [2021-12-07 01:36:15,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 01:36:15,050 INFO L276 IsEmpty]: Start isEmpty. Operand 878303 states and 1325715 transitions. [2021-12-07 01:36:15,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 01:36:15,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:15,055 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-07 01:36:15,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-07 01:36:15,056 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:36:15,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:15,056 INFO L85 PathProgramCache]: Analyzing trace with hash -3615941, now seen corresponding path program 1 times [2021-12-07 01:36:15,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:15,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627472477] [2021-12-07 01:36:15,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:15,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-07 01:36:15,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:15,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627472477] [2021-12-07 01:36:15,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627472477] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:36:15,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:36:15,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:36:15,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963598979] [2021-12-07 01:36:15,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:36:15,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:36:15,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:15,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:36:15,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:36:15,091 INFO L87 Difference]: Start difference. First operand 878303 states and 1325715 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 01:36:40,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:40,374 INFO L93 Difference]: Finished difference Result 1278701 states and 1938230 transitions. [2021-12-07 01:36:40,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:36:40,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-07 01:36:40,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:42,367 INFO L225 Difference]: With dead ends: 1278701 [2021-12-07 01:36:42,367 INFO L226 Difference]: Without dead ends: 1059091 [2021-12-07 01:36:42,586 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 01:36:42,587 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 234 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:42,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 748 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:36:43,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059091 states. [2021-12-07 01:37:10,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059091 to 962767. [2021-12-07 01:37:11,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962767 states, 962766 states have (on average 1.5093958448885814) internal successors, (1453195), 962766 states have internal predecessors, (1453195), 0 states have call successors, (0), 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 01:37:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962767 states to 962767 states and 1453195 transitions. [2021-12-07 01:37:13,880 INFO L78 Accepts]: Start accepts. Automaton has 962767 states and 1453195 transitions. Word has length 112 [2021-12-07 01:37:13,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:37:13,881 INFO L470 AbstractCegarLoop]: Abstraction has 962767 states and 1453195 transitions. [2021-12-07 01:37:13,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 01:37:13,881 INFO L276 IsEmpty]: Start isEmpty. Operand 962767 states and 1453195 transitions. [2021-12-07 01:37:13,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 01:37:13,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:37:13,888 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-07 01:37:13,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-07 01:37:13,888 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:37:13,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:37:13,889 INFO L85 PathProgramCache]: Analyzing trace with hash 697448637, now seen corresponding path program 1 times [2021-12-07 01:37:13,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:37:13,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631630699] [2021-12-07 01:37:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:37:13,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:37:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:13,916 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-07 01:37:13,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:37:13,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631630699] [2021-12-07 01:37:13,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631630699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:37:13,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:37:13,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:37:13,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778489073] [2021-12-07 01:37:13,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:37:13,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:37:13,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:37:13,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:37:13,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:37:13,917 INFO L87 Difference]: Start difference. First operand 962767 states and 1453195 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 01:37:52,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:37:52,411 INFO L93 Difference]: Finished difference Result 2001801 states and 3029253 transitions. [2021-12-07 01:37:52,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:37:52,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-07 01:37:52,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:37:55,252 INFO L225 Difference]: With dead ends: 2001801 [2021-12-07 01:37:55,253 INFO L226 Difference]: Without dead ends: 1548971 [2021-12-07 01:37:55,767 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 01:37:55,768 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 99 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:37:55,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 401 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:37:56,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548971 states. [2021-12-07 01:38:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548971 to 1545337. [2021-12-07 01:38:44,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545337 states, 1545336 states have (on average 1.5082020997375327) internal successors, (2330679), 1545336 states have internal predecessors, (2330679), 0 states have call successors, (0), 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 01:38:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545337 states to 1545337 states and 2330679 transitions. [2021-12-07 01:38:48,871 INFO L78 Accepts]: Start accepts. Automaton has 1545337 states and 2330679 transitions. Word has length 112 [2021-12-07 01:38:48,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:38:48,872 INFO L470 AbstractCegarLoop]: Abstraction has 1545337 states and 2330679 transitions. [2021-12-07 01:38:48,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 01:38:48,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1545337 states and 2330679 transitions. [2021-12-07 01:38:48,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 01:38:48,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:38:48,879 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-07 01:38:48,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-07 01:38:48,879 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:38:48,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:38:48,879 INFO L85 PathProgramCache]: Analyzing trace with hash 391518859, now seen corresponding path program 1 times [2021-12-07 01:38:48,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:38:48,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130951966] [2021-12-07 01:38:48,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:38:48,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:38:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:48,905 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:38:48,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:38:48,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130951966] [2021-12-07 01:38:48,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130951966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:38:48,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:38:48,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:38:48,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930695020] [2021-12-07 01:38:48,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:38:48,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:38:48,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:38:48,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:38:48,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:38:48,906 INFO L87 Difference]: Start difference. First operand 1545337 states and 2330679 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:40:10,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:40:10,859 INFO L93 Difference]: Finished difference Result 4575037 states and 6886113 transitions. [2021-12-07 01:40:10,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:40:10,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-07 01:40:10,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:40:16,802 INFO L225 Difference]: With dead ends: 4575037 [2021-12-07 01:40:16,802 INFO L226 Difference]: Without dead ends: 3029901 [2021-12-07 01:40:17,856 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 01:40:17,856 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 132 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:40:17,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 469 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:40:20,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3029901 states.