./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c1b0557200bb93e177956c2673df3bb0520e234 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 07:11:51,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:11:51,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:11:51,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:11:51,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:11:51,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:11:51,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:11:51,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:11:51,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:11:51,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:11:51,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:11:51,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:11:51,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:11:51,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:11:51,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:11:51,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:11:51,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:11:51,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:11:51,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:11:51,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:11:51,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:11:51,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:11:51,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:11:51,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:11:51,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:11:51,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:11:51,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:11:51,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:11:51,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:11:51,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:11:51,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:11:51,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:11:51,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:11:51,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:11:51,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:11:51,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:11:51,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:11:51,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:11:51,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:11:51,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:11:51,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:11:51,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 07:11:51,124 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:11:51,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:11:51,125 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:11:51,125 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:11:51,125 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:11:51,125 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:11:51,126 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:11:51,126 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:11:51,126 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:11:51,126 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:11:51,126 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:11:51,126 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:11:51,127 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:11:51,127 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:11:51,127 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:11:51,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:11:51,128 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:11:51,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:11:51,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:11:51,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:11:51,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:11:51,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:11:51,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:11:51,129 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:11:51,129 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:11:51,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:11:51,130 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:11:51,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:11:51,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:11:51,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:11:51,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:11:51,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:11:51,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:11:51,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:11:51,131 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:11:51,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:11:51,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:11:51,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:11:51,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:11:51,132 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c1b0557200bb93e177956c2673df3bb0520e234 [2020-12-09 07:11:51,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:11:51,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:11:51,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:11:51,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:11:51,339 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:11:51,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c [2020-12-09 07:11:51,379 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/data/ec8974359/49a709397edb4fec8ee1f79b2e63bd9f/FLAG5c231cc65 [2020-12-09 07:11:51,747 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:11:51,748 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c [2020-12-09 07:11:51,756 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/data/ec8974359/49a709397edb4fec8ee1f79b2e63bd9f/FLAG5c231cc65 [2020-12-09 07:11:51,769 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/data/ec8974359/49a709397edb4fec8ee1f79b2e63bd9f [2020-12-09 07:11:51,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:11:51,773 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:11:51,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:11:51,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:11:51,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:11:51,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:11:51" (1/1) ... [2020-12-09 07:11:51,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a0d879b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:51, skipping insertion in model container [2020-12-09 07:11:51,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:11:51" (1/1) ... [2020-12-09 07:11:51,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:11:51,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:11:51,958 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c[44298,44311] [2020-12-09 07:11:51,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:11:51,970 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:11:52,007 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c[44298,44311] [2020-12-09 07:11:52,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:11:52,019 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:11:52,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:52 WrapperNode [2020-12-09 07:11:52,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:11:52,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:11:52,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:11:52,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:11:52,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:52" (1/1) ... [2020-12-09 07:11:52,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:52" (1/1) ... [2020-12-09 07:11:52,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:11:52,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:11:52,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:11:52,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:11:52,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:52" (1/1) ... [2020-12-09 07:11:52,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:52" (1/1) ... [2020-12-09 07:11:52,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:52" (1/1) ... [2020-12-09 07:11:52,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:52" (1/1) ... [2020-12-09 07:11:52,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:52" (1/1) ... [2020-12-09 07:11:52,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:52" (1/1) ... [2020-12-09 07:11:52,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:52" (1/1) ... [2020-12-09 07:11:52,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:11:52,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:11:52,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:11:52,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:11:52,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:11:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:11:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:11:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:11:52,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:11:52,255 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:11:52,626 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-12-09 07:11:52,626 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-12-09 07:11:52,862 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:11:52,863 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 07:11:52,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:11:52 BoogieIcfgContainer [2020-12-09 07:11:52,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:11:52,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:11:52,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:11:52,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:11:52,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:11:51" (1/3) ... [2020-12-09 07:11:52,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ca93bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:11:52, skipping insertion in model container [2020-12-09 07:11:52,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:52" (2/3) ... [2020-12-09 07:11:52,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ca93bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:11:52, skipping insertion in model container [2020-12-09 07:11:52,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:11:52" (3/3) ... [2020-12-09 07:11:52,873 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_3a_alt.BV.c.cil.c [2020-12-09 07:11:52,884 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:11:52,887 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 07:11:52,894 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 07:11:52,913 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:11:52,913 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:11:52,913 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:11:52,913 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:11:52,914 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:11:52,914 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:11:52,914 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:11:52,914 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:11:52,925 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states. [2020-12-09 07:11:52,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-09 07:11:52,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:52,931 INFO L422 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] [2020-12-09 07:11:52,931 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:52,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:52,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1047767428, now seen corresponding path program 1 times [2020-12-09 07:11:52,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:52,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221543119] [2020-12-09 07:11:52,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:53,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:11:53,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221543119] [2020-12-09 07:11:53,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:53,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:11:53,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909973195] [2020-12-09 07:11:53,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:11:53,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:53,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:11:53,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:53,142 INFO L87 Difference]: Start difference. First operand 104 states. Second operand 3 states. [2020-12-09 07:11:53,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:53,330 INFO L93 Difference]: Finished difference Result 254 states and 448 transitions. [2020-12-09 07:11:53,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:11:53,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-09 07:11:53,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:53,340 INFO L225 Difference]: With dead ends: 254 [2020-12-09 07:11:53,340 INFO L226 Difference]: Without dead ends: 146 [2020-12-09 07:11:53,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:53,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-12-09 07:11:53,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 141. [2020-12-09 07:11:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-09 07:11:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 228 transitions. [2020-12-09 07:11:53,377 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 228 transitions. Word has length 39 [2020-12-09 07:11:53,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:53,377 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 228 transitions. [2020-12-09 07:11:53,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:11:53,377 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 228 transitions. [2020-12-09 07:11:53,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-09 07:11:53,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:53,379 INFO L422 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] [2020-12-09 07:11:53,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:11:53,379 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:53,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1886013428, now seen corresponding path program 1 times [2020-12-09 07:11:53,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:53,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494843874] [2020-12-09 07:11:53,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:11:53,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494843874] [2020-12-09 07:11:53,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:53,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:11:53,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450222053] [2020-12-09 07:11:53,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:11:53,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:53,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:11:53,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:53,437 INFO L87 Difference]: Start difference. First operand 141 states and 228 transitions. Second operand 3 states. [2020-12-09 07:11:53,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:53,598 INFO L93 Difference]: Finished difference Result 326 states and 536 transitions. [2020-12-09 07:11:53,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:11:53,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-09 07:11:53,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:53,601 INFO L225 Difference]: With dead ends: 326 [2020-12-09 07:11:53,601 INFO L226 Difference]: Without dead ends: 185 [2020-12-09 07:11:53,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:53,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-12-09 07:11:53,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 180. [2020-12-09 07:11:53,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-12-09 07:11:53,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 301 transitions. [2020-12-09 07:11:53,614 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 301 transitions. Word has length 40 [2020-12-09 07:11:53,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:53,614 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 301 transitions. [2020-12-09 07:11:53,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:11:53,614 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 301 transitions. [2020-12-09 07:11:53,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-09 07:11:53,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:53,617 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:11:53,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 07:11:53,617 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:53,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:53,618 INFO L82 PathProgramCache]: Analyzing trace with hash -149835480, now seen corresponding path program 1 times [2020-12-09 07:11:53,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:53,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094821909] [2020-12-09 07:11:53,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:11:53,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094821909] [2020-12-09 07:11:53,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:53,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:11:53,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446035696] [2020-12-09 07:11:53,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:11:53,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:53,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:11:53,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:53,672 INFO L87 Difference]: Start difference. First operand 180 states and 301 transitions. Second operand 3 states. [2020-12-09 07:11:53,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:53,786 INFO L93 Difference]: Finished difference Result 387 states and 654 transitions. [2020-12-09 07:11:53,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:11:53,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-09 07:11:53,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:53,788 INFO L225 Difference]: With dead ends: 387 [2020-12-09 07:11:53,788 INFO L226 Difference]: Without dead ends: 209 [2020-12-09 07:11:53,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:53,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-12-09 07:11:53,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-12-09 07:11:53,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-12-09 07:11:53,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 353 transitions. [2020-12-09 07:11:53,806 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 353 transitions. Word has length 66 [2020-12-09 07:11:53,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:53,806 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 353 transitions. [2020-12-09 07:11:53,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:11:53,807 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 353 transitions. [2020-12-09 07:11:53,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-09 07:11:53,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:53,810 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-12-09 07:11:53,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 07:11:53,811 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:53,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:53,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1574375233, now seen corresponding path program 1 times [2020-12-09 07:11:53,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:53,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329213279] [2020-12-09 07:11:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:53,864 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 07:11:53,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329213279] [2020-12-09 07:11:53,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:53,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:11:53,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309902960] [2020-12-09 07:11:53,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:11:53,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:53,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:11:53,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:53,866 INFO L87 Difference]: Start difference. First operand 209 states and 353 transitions. Second operand 3 states. [2020-12-09 07:11:53,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:53,953 INFO L93 Difference]: Finished difference Result 431 states and 728 transitions. [2020-12-09 07:11:53,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:11:53,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-09 07:11:53,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:53,954 INFO L225 Difference]: With dead ends: 431 [2020-12-09 07:11:53,954 INFO L226 Difference]: Without dead ends: 224 [2020-12-09 07:11:53,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:53,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-09 07:11:53,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2020-12-09 07:11:53,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-09 07:11:53,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 372 transitions. [2020-12-09 07:11:53,965 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 372 transitions. Word has length 77 [2020-12-09 07:11:53,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:53,965 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 372 transitions. [2020-12-09 07:11:53,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:11:53,966 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 372 transitions. [2020-12-09 07:11:53,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-09 07:11:53,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:53,969 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:11:53,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 07:11:53,969 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:53,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:53,969 INFO L82 PathProgramCache]: Analyzing trace with hash 212263908, now seen corresponding path program 1 times [2020-12-09 07:11:53,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:53,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835561312] [2020-12-09 07:11:53,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:11:54,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835561312] [2020-12-09 07:11:54,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:54,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:11:54,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47275278] [2020-12-09 07:11:54,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:11:54,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:54,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:11:54,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:54,024 INFO L87 Difference]: Start difference. First operand 222 states and 372 transitions. Second operand 3 states. [2020-12-09 07:11:54,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:54,138 INFO L93 Difference]: Finished difference Result 483 states and 815 transitions. [2020-12-09 07:11:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:11:54,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-09 07:11:54,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:54,140 INFO L225 Difference]: With dead ends: 483 [2020-12-09 07:11:54,140 INFO L226 Difference]: Without dead ends: 263 [2020-12-09 07:11:54,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:54,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-12-09 07:11:54,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 260. [2020-12-09 07:11:54,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-12-09 07:11:54,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 440 transitions. [2020-12-09 07:11:54,152 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 440 transitions. Word has length 77 [2020-12-09 07:11:54,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:54,152 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 440 transitions. [2020-12-09 07:11:54,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:11:54,152 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 440 transitions. [2020-12-09 07:11:54,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-09 07:11:54,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:54,153 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 07:11:54,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 07:11:54,154 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:54,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:54,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1193861236, now seen corresponding path program 1 times [2020-12-09 07:11:54,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:54,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585909676] [2020-12-09 07:11:54,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 07:11:54,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585909676] [2020-12-09 07:11:54,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:54,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:11:54,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070913904] [2020-12-09 07:11:54,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:11:54,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:54,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:11:54,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:54,182 INFO L87 Difference]: Start difference. First operand 260 states and 440 transitions. Second operand 3 states. [2020-12-09 07:11:54,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:54,265 INFO L93 Difference]: Finished difference Result 520 states and 880 transitions. [2020-12-09 07:11:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:11:54,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-09 07:11:54,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:54,267 INFO L225 Difference]: With dead ends: 520 [2020-12-09 07:11:54,268 INFO L226 Difference]: Without dead ends: 262 [2020-12-09 07:11:54,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:54,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-12-09 07:11:54,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2020-12-09 07:11:54,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-12-09 07:11:54,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 436 transitions. [2020-12-09 07:11:54,276 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 436 transitions. Word has length 78 [2020-12-09 07:11:54,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:54,277 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 436 transitions. [2020-12-09 07:11:54,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:11:54,277 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 436 transitions. [2020-12-09 07:11:54,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-09 07:11:54,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:54,278 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:11:54,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 07:11:54,278 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:54,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:54,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1424975604, now seen corresponding path program 1 times [2020-12-09 07:11:54,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:54,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455194374] [2020-12-09 07:11:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:54,322 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:11:54,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455194374] [2020-12-09 07:11:54,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:54,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:11:54,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134582718] [2020-12-09 07:11:54,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:11:54,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:54,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:11:54,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:54,324 INFO L87 Difference]: Start difference. First operand 260 states and 436 transitions. Second operand 3 states. [2020-12-09 07:11:54,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:54,440 INFO L93 Difference]: Finished difference Result 521 states and 873 transitions. [2020-12-09 07:11:54,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:11:54,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-09 07:11:54,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:54,441 INFO L225 Difference]: With dead ends: 521 [2020-12-09 07:11:54,442 INFO L226 Difference]: Without dead ends: 261 [2020-12-09 07:11:54,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:54,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-12-09 07:11:54,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 258. [2020-12-09 07:11:54,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-12-09 07:11:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 431 transitions. [2020-12-09 07:11:54,449 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 431 transitions. Word has length 78 [2020-12-09 07:11:54,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:54,449 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 431 transitions. [2020-12-09 07:11:54,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:11:54,449 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 431 transitions. [2020-12-09 07:11:54,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-09 07:11:54,450 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:54,450 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 07:11:54,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 07:11:54,451 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:54,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:54,451 INFO L82 PathProgramCache]: Analyzing trace with hash -578163586, now seen corresponding path program 1 times [2020-12-09 07:11:54,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:54,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068582222] [2020-12-09 07:11:54,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:54,476 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-09 07:11:54,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068582222] [2020-12-09 07:11:54,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:54,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:11:54,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088182465] [2020-12-09 07:11:54,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:11:54,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:54,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:11:54,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:54,478 INFO L87 Difference]: Start difference. First operand 258 states and 431 transitions. Second operand 3 states. [2020-12-09 07:11:54,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:54,577 INFO L93 Difference]: Finished difference Result 521 states and 869 transitions. [2020-12-09 07:11:54,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:11:54,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-09 07:11:54,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:54,579 INFO L225 Difference]: With dead ends: 521 [2020-12-09 07:11:54,579 INFO L226 Difference]: Without dead ends: 265 [2020-12-09 07:11:54,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:54,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-12-09 07:11:54,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2020-12-09 07:11:54,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-12-09 07:11:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 434 transitions. [2020-12-09 07:11:54,591 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 434 transitions. Word has length 86 [2020-12-09 07:11:54,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:54,591 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 434 transitions. [2020-12-09 07:11:54,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:11:54,591 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 434 transitions. [2020-12-09 07:11:54,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-09 07:11:54,592 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:54,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 07:11:54,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 07:11:54,593 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:54,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:54,593 INFO L82 PathProgramCache]: Analyzing trace with hash 40573218, now seen corresponding path program 1 times [2020-12-09 07:11:54,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:54,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158031817] [2020-12-09 07:11:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:54,634 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 07:11:54,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158031817] [2020-12-09 07:11:54,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:54,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:11:54,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248424560] [2020-12-09 07:11:54,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:11:54,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:54,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:11:54,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:54,636 INFO L87 Difference]: Start difference. First operand 265 states and 434 transitions. Second operand 3 states. [2020-12-09 07:11:54,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:54,738 INFO L93 Difference]: Finished difference Result 557 states and 915 transitions. [2020-12-09 07:11:54,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:11:54,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-09 07:11:54,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:54,740 INFO L225 Difference]: With dead ends: 557 [2020-12-09 07:11:54,740 INFO L226 Difference]: Without dead ends: 294 [2020-12-09 07:11:54,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:54,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-12-09 07:11:54,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 292. [2020-12-09 07:11:54,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-12-09 07:11:54,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 477 transitions. [2020-12-09 07:11:54,749 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 477 transitions. Word has length 91 [2020-12-09 07:11:54,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:54,749 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 477 transitions. [2020-12-09 07:11:54,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:11:54,749 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 477 transitions. [2020-12-09 07:11:54,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-09 07:11:54,751 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:54,751 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 07:11:54,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 07:11:54,751 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:54,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:54,752 INFO L82 PathProgramCache]: Analyzing trace with hash -150412053, now seen corresponding path program 1 times [2020-12-09 07:11:54,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:54,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040040388] [2020-12-09 07:11:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 07:11:54,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040040388] [2020-12-09 07:11:54,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:54,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:11:54,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132415052] [2020-12-09 07:11:54,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:11:54,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:54,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:11:54,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:54,786 INFO L87 Difference]: Start difference. First operand 292 states and 477 transitions. Second operand 3 states. [2020-12-09 07:11:54,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:54,890 INFO L93 Difference]: Finished difference Result 614 states and 1007 transitions. [2020-12-09 07:11:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:11:54,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-09 07:11:54,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:54,892 INFO L225 Difference]: With dead ends: 614 [2020-12-09 07:11:54,892 INFO L226 Difference]: Without dead ends: 324 [2020-12-09 07:11:54,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:54,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-12-09 07:11:54,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 317. [2020-12-09 07:11:54,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-12-09 07:11:54,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 515 transitions. [2020-12-09 07:11:54,902 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 515 transitions. Word has length 92 [2020-12-09 07:11:54,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:54,902 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 515 transitions. [2020-12-09 07:11:54,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:11:54,902 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 515 transitions. [2020-12-09 07:11:54,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-09 07:11:54,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:54,903 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 07:11:54,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 07:11:54,903 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:54,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:54,903 INFO L82 PathProgramCache]: Analyzing trace with hash -76813937, now seen corresponding path program 1 times [2020-12-09 07:11:54,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:54,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907493677] [2020-12-09 07:11:54,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:54,926 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 07:11:54,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907493677] [2020-12-09 07:11:54,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:54,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:11:54,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017154844] [2020-12-09 07:11:54,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:11:54,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:54,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:11:54,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:54,927 INFO L87 Difference]: Start difference. First operand 317 states and 515 transitions. Second operand 3 states. [2020-12-09 07:11:55,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:55,050 INFO L93 Difference]: Finished difference Result 634 states and 1030 transitions. [2020-12-09 07:11:55,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:11:55,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-09 07:11:55,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:55,052 INFO L225 Difference]: With dead ends: 634 [2020-12-09 07:11:55,052 INFO L226 Difference]: Without dead ends: 319 [2020-12-09 07:11:55,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-12-09 07:11:55,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 317. [2020-12-09 07:11:55,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-12-09 07:11:55,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 511 transitions. [2020-12-09 07:11:55,067 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 511 transitions. Word has length 92 [2020-12-09 07:11:55,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:55,067 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 511 transitions. [2020-12-09 07:11:55,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:11:55,067 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 511 transitions. [2020-12-09 07:11:55,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-09 07:11:55,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:55,068 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 07:11:55,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 07:11:55,069 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:55,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:55,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1847214402, now seen corresponding path program 1 times [2020-12-09 07:11:55,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:55,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188995355] [2020-12-09 07:11:55,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:55,101 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 07:11:55,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188995355] [2020-12-09 07:11:55,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:55,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:11:55,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125191647] [2020-12-09 07:11:55,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:11:55,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:55,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:11:55,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:55,106 INFO L87 Difference]: Start difference. First operand 317 states and 511 transitions. Second operand 3 states. [2020-12-09 07:11:55,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:55,219 INFO L93 Difference]: Finished difference Result 639 states and 1032 transitions. [2020-12-09 07:11:55,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:11:55,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-09 07:11:55,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:55,221 INFO L225 Difference]: With dead ends: 639 [2020-12-09 07:11:55,221 INFO L226 Difference]: Without dead ends: 324 [2020-12-09 07:11:55,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:55,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-12-09 07:11:55,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 317. [2020-12-09 07:11:55,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-12-09 07:11:55,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 506 transitions. [2020-12-09 07:11:55,231 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 506 transitions. Word has length 93 [2020-12-09 07:11:55,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:55,231 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 506 transitions. [2020-12-09 07:11:55,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:11:55,232 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 506 transitions. [2020-12-09 07:11:55,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-09 07:11:55,233 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:55,233 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:11:55,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 07:11:55,233 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:55,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:55,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1143638624, now seen corresponding path program 1 times [2020-12-09 07:11:55,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:55,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918972618] [2020-12-09 07:11:55,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:55,260 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-09 07:11:55,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918972618] [2020-12-09 07:11:55,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:55,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:11:55,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581046659] [2020-12-09 07:11:55,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:11:55,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:55,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:11:55,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:55,261 INFO L87 Difference]: Start difference. First operand 317 states and 506 transitions. Second operand 3 states. [2020-12-09 07:11:55,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:55,371 INFO L93 Difference]: Finished difference Result 653 states and 1043 transitions. [2020-12-09 07:11:55,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:11:55,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-09 07:11:55,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:55,374 INFO L225 Difference]: With dead ends: 653 [2020-12-09 07:11:55,374 INFO L226 Difference]: Without dead ends: 338 [2020-12-09 07:11:55,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:55,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-12-09 07:11:55,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 336. [2020-12-09 07:11:55,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-12-09 07:11:55,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 531 transitions. [2020-12-09 07:11:55,384 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 531 transitions. Word has length 94 [2020-12-09 07:11:55,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:55,384 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 531 transitions. [2020-12-09 07:11:55,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:11:55,385 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 531 transitions. [2020-12-09 07:11:55,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-09 07:11:55,385 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:55,385 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:11:55,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 07:11:55,386 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:55,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:55,386 INFO L82 PathProgramCache]: Analyzing trace with hash 625813843, now seen corresponding path program 1 times [2020-12-09 07:11:55,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:55,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088292009] [2020-12-09 07:11:55,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:55,409 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-09 07:11:55,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088292009] [2020-12-09 07:11:55,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:55,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:11:55,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142107859] [2020-12-09 07:11:55,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:11:55,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:55,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:11:55,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:55,411 INFO L87 Difference]: Start difference. First operand 336 states and 531 transitions. Second operand 3 states. [2020-12-09 07:11:55,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:55,509 INFO L93 Difference]: Finished difference Result 672 states and 1062 transitions. [2020-12-09 07:11:55,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:11:55,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-09 07:11:55,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:55,511 INFO L225 Difference]: With dead ends: 672 [2020-12-09 07:11:55,511 INFO L226 Difference]: Without dead ends: 338 [2020-12-09 07:11:55,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:55,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-12-09 07:11:55,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 336. [2020-12-09 07:11:55,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-12-09 07:11:55,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 525 transitions. [2020-12-09 07:11:55,523 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 525 transitions. Word has length 95 [2020-12-09 07:11:55,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:55,523 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 525 transitions. [2020-12-09 07:11:55,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:11:55,523 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 525 transitions. [2020-12-09 07:11:55,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-09 07:11:55,524 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:55,524 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-12-09 07:11:55,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 07:11:55,524 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:55,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:55,524 INFO L82 PathProgramCache]: Analyzing trace with hash -118451143, now seen corresponding path program 1 times [2020-12-09 07:11:55,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:55,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802693087] [2020-12-09 07:11:55,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:11:55,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802693087] [2020-12-09 07:11:55,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257729428] [2020-12-09 07:11:55,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:11:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:55,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 07:11:55,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:11:55,802 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:11:55,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:11:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-12-09 07:11:55,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 07:11:55,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 6 [2020-12-09 07:11:55,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802393792] [2020-12-09 07:11:55,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:11:55,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:55,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:11:55,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:11:55,922 INFO L87 Difference]: Start difference. First operand 336 states and 525 transitions. Second operand 3 states. [2020-12-09 07:11:55,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:55,952 INFO L93 Difference]: Finished difference Result 669 states and 1047 transitions. [2020-12-09 07:11:55,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:11:55,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-09 07:11:55,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:55,955 INFO L225 Difference]: With dead ends: 669 [2020-12-09 07:11:55,955 INFO L226 Difference]: Without dead ends: 667 [2020-12-09 07:11:55,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:11:55,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2020-12-09 07:11:55,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 664. [2020-12-09 07:11:55,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-12-09 07:11:55,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1041 transitions. [2020-12-09 07:11:55,977 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1041 transitions. Word has length 108 [2020-12-09 07:11:55,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:55,977 INFO L481 AbstractCegarLoop]: Abstraction has 664 states and 1041 transitions. [2020-12-09 07:11:55,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:11:55,977 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1041 transitions. [2020-12-09 07:11:55,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-09 07:11:55,978 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:55,978 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:11:56,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-09 07:11:56,179 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:56,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:56,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1093827545, now seen corresponding path program 1 times [2020-12-09 07:11:56,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:56,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465240922] [2020-12-09 07:11:56,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:56,186 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:11:56,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325346748] [2020-12-09 07:11:56,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:11:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:56,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 07:11:56,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:11:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-09 07:11:56,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:11:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-09 07:11:56,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465240922] [2020-12-09 07:11:56,408 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:11:56,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325346748] [2020-12-09 07:11:56,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:56,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-12-09 07:11:56,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505307776] [2020-12-09 07:11:56,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:11:56,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:56,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:11:56,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:11:56,409 INFO L87 Difference]: Start difference. First operand 664 states and 1041 transitions. Second operand 4 states. [2020-12-09 07:11:56,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:56,635 INFO L93 Difference]: Finished difference Result 1490 states and 2332 transitions. [2020-12-09 07:11:56,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:11:56,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-12-09 07:11:56,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:56,640 INFO L225 Difference]: With dead ends: 1490 [2020-12-09 07:11:56,640 INFO L226 Difference]: Without dead ends: 786 [2020-12-09 07:11:56,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:11:56,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-12-09 07:11:56,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 766. [2020-12-09 07:11:56,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2020-12-09 07:11:56,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1153 transitions. [2020-12-09 07:11:56,667 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1153 transitions. Word has length 111 [2020-12-09 07:11:56,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:56,667 INFO L481 AbstractCegarLoop]: Abstraction has 766 states and 1153 transitions. [2020-12-09 07:11:56,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:11:56,667 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1153 transitions. [2020-12-09 07:11:56,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-09 07:11:56,669 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:56,669 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:11:56,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-09 07:11:56,869 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:56,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:56,870 INFO L82 PathProgramCache]: Analyzing trace with hash -2103255236, now seen corresponding path program 1 times [2020-12-09 07:11:56,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:56,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76335671] [2020-12-09 07:11:56,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:56,885 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:11:56,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994875387] [2020-12-09 07:11:56,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:11:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:56,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 07:11:56,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:11:57,070 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-12-09 07:11:57,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:11:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-12-09 07:11:57,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76335671] [2020-12-09 07:11:57,192 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:11:57,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994875387] [2020-12-09 07:11:57,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:57,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-09 07:11:57,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92209674] [2020-12-09 07:11:57,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 07:11:57,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:57,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 07:11:57,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:11:57,193 INFO L87 Difference]: Start difference. First operand 766 states and 1153 transitions. Second operand 6 states. [2020-12-09 07:11:57,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:57,460 INFO L93 Difference]: Finished difference Result 1598 states and 2399 transitions. [2020-12-09 07:11:57,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 07:11:57,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-12-09 07:11:57,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:57,464 INFO L225 Difference]: With dead ends: 1598 [2020-12-09 07:11:57,464 INFO L226 Difference]: Without dead ends: 834 [2020-12-09 07:11:57,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:11:57,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-12-09 07:11:57,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 803. [2020-12-09 07:11:57,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-12-09 07:11:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1141 transitions. [2020-12-09 07:11:57,487 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1141 transitions. Word has length 142 [2020-12-09 07:11:57,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:57,487 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1141 transitions. [2020-12-09 07:11:57,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 07:11:57,487 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1141 transitions. [2020-12-09 07:11:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-09 07:11:57,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:57,489 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:11:57,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-09 07:11:57,690 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:57,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:57,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1551239064, now seen corresponding path program 1 times [2020-12-09 07:11:57,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:57,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903027865] [2020-12-09 07:11:57,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:57,744 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-12-09 07:11:57,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903027865] [2020-12-09 07:11:57,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:57,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:11:57,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031766139] [2020-12-09 07:11:57,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:11:57,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:57,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:11:57,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:57,746 INFO L87 Difference]: Start difference. First operand 803 states and 1141 transitions. Second operand 3 states. [2020-12-09 07:11:57,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:57,877 INFO L93 Difference]: Finished difference Result 1608 states and 2284 transitions. [2020-12-09 07:11:57,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:11:57,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-12-09 07:11:57,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:57,882 INFO L225 Difference]: With dead ends: 1608 [2020-12-09 07:11:57,882 INFO L226 Difference]: Without dead ends: 807 [2020-12-09 07:11:57,884 INFO L677 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 [2020-12-09 07:11:57,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2020-12-09 07:11:57,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 803. [2020-12-09 07:11:57,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-12-09 07:11:57,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1127 transitions. [2020-12-09 07:11:57,907 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1127 transitions. Word has length 157 [2020-12-09 07:11:57,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:57,907 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1127 transitions. [2020-12-09 07:11:57,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:11:57,907 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1127 transitions. [2020-12-09 07:11:57,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-12-09 07:11:57,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:57,909 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:11:57,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-09 07:11:57,909 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:57,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:57,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1513055450, now seen corresponding path program 1 times [2020-12-09 07:11:57,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:57,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277977348] [2020-12-09 07:11:57,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:57,918 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:11:57,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363228252] [2020-12-09 07:11:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:11:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:57,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:11:57,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:11:58,089 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-12-09 07:11:58,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:11:58,194 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-12-09 07:11:58,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277977348] [2020-12-09 07:11:58,194 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:11:58,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363228252] [2020-12-09 07:11:58,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:58,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-09 07:11:58,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063528321] [2020-12-09 07:11:58,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:11:58,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:58,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:11:58,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:11:58,195 INFO L87 Difference]: Start difference. First operand 803 states and 1127 transitions. Second operand 4 states. [2020-12-09 07:11:58,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:58,332 INFO L93 Difference]: Finished difference Result 1241 states and 1741 transitions. [2020-12-09 07:11:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:11:58,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2020-12-09 07:11:58,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:58,337 INFO L225 Difference]: With dead ends: 1241 [2020-12-09 07:11:58,337 INFO L226 Difference]: Without dead ends: 819 [2020-12-09 07:11:58,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:11:58,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-12-09 07:11:58,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 803. [2020-12-09 07:11:58,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-12-09 07:11:58,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1125 transitions. [2020-12-09 07:11:58,367 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1125 transitions. Word has length 181 [2020-12-09 07:11:58,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:58,367 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1125 transitions. [2020-12-09 07:11:58,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:11:58,367 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1125 transitions. [2020-12-09 07:11:58,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-12-09 07:11:58,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:58,368 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-12-09 07:11:58,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:11:58,570 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:58,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:58,571 INFO L82 PathProgramCache]: Analyzing trace with hash 786096845, now seen corresponding path program 1 times [2020-12-09 07:11:58,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:58,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114576758] [2020-12-09 07:11:58,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:58,607 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:11:58,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182471824] [2020-12-09 07:11:58,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:11:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:58,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 07:11:58,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:11:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-12-09 07:11:58,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:11:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-12-09 07:11:59,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114576758] [2020-12-09 07:11:59,067 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:11:59,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182471824] [2020-12-09 07:11:59,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:59,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-12-09 07:11:59,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612232104] [2020-12-09 07:11:59,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:11:59,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:59,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:11:59,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:59,069 INFO L87 Difference]: Start difference. First operand 803 states and 1125 transitions. Second operand 3 states. [2020-12-09 07:11:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:59,183 INFO L93 Difference]: Finished difference Result 1670 states and 2350 transitions. [2020-12-09 07:11:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:11:59,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2020-12-09 07:11:59,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:59,188 INFO L225 Difference]: With dead ends: 1670 [2020-12-09 07:11:59,188 INFO L226 Difference]: Without dead ends: 869 [2020-12-09 07:11:59,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:59,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2020-12-09 07:11:59,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 849. [2020-12-09 07:11:59,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-12-09 07:11:59,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1177 transitions. [2020-12-09 07:11:59,219 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1177 transitions. Word has length 193 [2020-12-09 07:11:59,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:59,219 INFO L481 AbstractCegarLoop]: Abstraction has 849 states and 1177 transitions. [2020-12-09 07:11:59,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:11:59,219 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1177 transitions. [2020-12-09 07:11:59,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-12-09 07:11:59,222 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:59,222 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-12-09 07:11:59,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:11:59,423 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:59,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:59,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1707802564, now seen corresponding path program 1 times [2020-12-09 07:11:59,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:59,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886601277] [2020-12-09 07:11:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-12-09 07:11:59,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886601277] [2020-12-09 07:11:59,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:59,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:11:59,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747672654] [2020-12-09 07:11:59,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:11:59,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:59,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:11:59,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:11:59,534 INFO L87 Difference]: Start difference. First operand 849 states and 1177 transitions. Second operand 3 states. [2020-12-09 07:11:59,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:59,652 INFO L93 Difference]: Finished difference Result 1710 states and 2376 transitions. [2020-12-09 07:11:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:11:59,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-12-09 07:11:59,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:59,656 INFO L225 Difference]: With dead ends: 1710 [2020-12-09 07:11:59,656 INFO L226 Difference]: Without dead ends: 863 [2020-12-09 07:11:59,657 INFO L677 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 [2020-12-09 07:11:59,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-12-09 07:11:59,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 849. [2020-12-09 07:11:59,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-12-09 07:11:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1155 transitions. [2020-12-09 07:11:59,690 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1155 transitions. Word has length 217 [2020-12-09 07:11:59,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:59,691 INFO L481 AbstractCegarLoop]: Abstraction has 849 states and 1155 transitions. [2020-12-09 07:11:59,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:11:59,691 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1155 transitions. [2020-12-09 07:11:59,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-12-09 07:11:59,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:59,693 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 07:11:59,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-09 07:11:59,694 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:11:59,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:59,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1333756291, now seen corresponding path program 1 times [2020-12-09 07:11:59,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:59,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281058867] [2020-12-09 07:11:59,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:59,710 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:11:59,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207745149] [2020-12-09 07:11:59,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:11:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:59,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 07:11:59,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:11:59,912 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-12-09 07:11:59,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:12:00,026 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-12-09 07:12:00,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281058867] [2020-12-09 07:12:00,026 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:12:00,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207745149] [2020-12-09 07:12:00,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1038358809] [2020-12-09 07:12:00,046 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2020-12-09 07:12:00,046 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:12:00,049 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:12:00,053 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:12:00,053 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:12:00,645 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-12-09 07:12:00,847 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-12-09 07:12:05,566 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 07:12:05,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 07:12:05,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-09 07:12:05,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443030436] [2020-12-09 07:12:05,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 07:12:05,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:12:05,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 07:12:05,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:12:05,569 INFO L87 Difference]: Start difference. First operand 849 states and 1155 transitions. Second operand 6 states. [2020-12-09 07:12:05,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:12:05,871 INFO L93 Difference]: Finished difference Result 2580 states and 3496 transitions. [2020-12-09 07:12:05,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 07:12:05,872 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 238 [2020-12-09 07:12:05,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:12:05,878 INFO L225 Difference]: With dead ends: 2580 [2020-12-09 07:12:05,878 INFO L226 Difference]: Without dead ends: 1691 [2020-12-09 07:12:05,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:12:05,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2020-12-09 07:12:05,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1031. [2020-12-09 07:12:05,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-12-09 07:12:05,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1421 transitions. [2020-12-09 07:12:05,906 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1421 transitions. Word has length 238 [2020-12-09 07:12:05,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:12:05,906 INFO L481 AbstractCegarLoop]: Abstraction has 1031 states and 1421 transitions. [2020-12-09 07:12:05,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 07:12:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1421 transitions. [2020-12-09 07:12:05,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-12-09 07:12:05,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:12:05,908 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2020-12-09 07:12:06,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:12:06,109 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:12:06,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:12:06,109 INFO L82 PathProgramCache]: Analyzing trace with hash 652474400, now seen corresponding path program 1 times [2020-12-09 07:12:06,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:12:06,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98121424] [2020-12-09 07:12:06,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:12:06,125 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:12:06,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1663834856] [2020-12-09 07:12:06,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:12:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:12:06,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 07:12:06,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:12:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 317 proven. 176 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-12-09 07:12:06,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:12:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 368 proven. 125 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-12-09 07:12:06,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98121424] [2020-12-09 07:12:06,538 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:12:06,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663834856] [2020-12-09 07:12:06,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [23861444] [2020-12-09 07:12:06,540 INFO L159 IcfgInterpreter]: Started Sifa with 55 locations of interest [2020-12-09 07:12:06,540 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:12:06,541 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:12:06,541 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:12:06,541 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:12:08,911 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 07:12:08,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 07:12:08,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-12-09 07:12:08,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711021705] [2020-12-09 07:12:08,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 07:12:08,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:12:08,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 07:12:08,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:12:08,913 INFO L87 Difference]: Start difference. First operand 1031 states and 1421 transitions. Second operand 7 states. [2020-12-09 07:12:09,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:12:09,427 INFO L93 Difference]: Finished difference Result 3027 states and 4168 transitions. [2020-12-09 07:12:09,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 07:12:09,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-12-09 07:12:09,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:12:09,432 INFO L225 Difference]: With dead ends: 3027 [2020-12-09 07:12:09,433 INFO L226 Difference]: Without dead ends: 1387 [2020-12-09 07:12:09,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-12-09 07:12:09,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2020-12-09 07:12:09,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1316. [2020-12-09 07:12:09,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1316 states. [2020-12-09 07:12:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1788 transitions. [2020-12-09 07:12:09,466 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1788 transitions. Word has length 246 [2020-12-09 07:12:09,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:12:09,467 INFO L481 AbstractCegarLoop]: Abstraction has 1316 states and 1788 transitions. [2020-12-09 07:12:09,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 07:12:09,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1788 transitions. [2020-12-09 07:12:09,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-12-09 07:12:09,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:12:09,468 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 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] [2020-12-09 07:12:09,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable276 [2020-12-09 07:12:09,669 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:12:09,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:12:09,669 INFO L82 PathProgramCache]: Analyzing trace with hash -2118146088, now seen corresponding path program 1 times [2020-12-09 07:12:09,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:12:09,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094558298] [2020-12-09 07:12:09,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:12:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:12:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-12-09 07:12:09,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094558298] [2020-12-09 07:12:09,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:12:09,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:12:09,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256564991] [2020-12-09 07:12:09,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:12:09,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:12:09,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:12:09,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:12:09,748 INFO L87 Difference]: Start difference. First operand 1316 states and 1788 transitions. Second operand 3 states. [2020-12-09 07:12:09,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:12:09,859 INFO L93 Difference]: Finished difference Result 2636 states and 3580 transitions. [2020-12-09 07:12:09,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:12:09,860 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 269 [2020-12-09 07:12:09,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:12:09,864 INFO L225 Difference]: With dead ends: 2636 [2020-12-09 07:12:09,864 INFO L226 Difference]: Without dead ends: 1322 [2020-12-09 07:12:09,866 INFO L677 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 [2020-12-09 07:12:09,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2020-12-09 07:12:09,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1316. [2020-12-09 07:12:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1316 states. [2020-12-09 07:12:09,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1758 transitions. [2020-12-09 07:12:09,896 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1758 transitions. Word has length 269 [2020-12-09 07:12:09,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:12:09,896 INFO L481 AbstractCegarLoop]: Abstraction has 1316 states and 1758 transitions. [2020-12-09 07:12:09,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:12:09,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1758 transitions. [2020-12-09 07:12:09,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-12-09 07:12:09,898 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:12:09,898 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 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] [2020-12-09 07:12:09,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable433 [2020-12-09 07:12:09,898 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:12:09,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:12:09,898 INFO L82 PathProgramCache]: Analyzing trace with hash 672297116, now seen corresponding path program 1 times [2020-12-09 07:12:09,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:12:09,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210361401] [2020-12-09 07:12:09,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:12:09,909 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:12:09,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1871769670] [2020-12-09 07:12:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:12:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:12:09,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 07:12:10,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:12:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1047 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2020-12-09 07:12:10,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:12:10,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1047 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2020-12-09 07:12:10,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210361401] [2020-12-09 07:12:10,280 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:12:10,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871769670] [2020-12-09 07:12:10,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:12:10,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-12-09 07:12:10,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755420104] [2020-12-09 07:12:10,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:12:10,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:12:10,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:12:10,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:12:10,281 INFO L87 Difference]: Start difference. First operand 1316 states and 1758 transitions. Second operand 3 states. [2020-12-09 07:12:10,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:12:10,382 INFO L93 Difference]: Finished difference Result 2732 states and 3661 transitions. [2020-12-09 07:12:10,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:12:10,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 300 [2020-12-09 07:12:10,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:12:10,387 INFO L225 Difference]: With dead ends: 2732 [2020-12-09 07:12:10,387 INFO L226 Difference]: Without dead ends: 1418 [2020-12-09 07:12:10,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:12:10,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2020-12-09 07:12:10,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1412. [2020-12-09 07:12:10,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2020-12-09 07:12:10,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1863 transitions. [2020-12-09 07:12:10,420 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1863 transitions. Word has length 300 [2020-12-09 07:12:10,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:12:10,420 INFO L481 AbstractCegarLoop]: Abstraction has 1412 states and 1863 transitions. [2020-12-09 07:12:10,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:12:10,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1863 transitions. [2020-12-09 07:12:10,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-12-09 07:12:10,422 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:12:10,422 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 6, 5, 5, 4, 4, 3, 3, 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] [2020-12-09 07:12:10,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable434 [2020-12-09 07:12:10,624 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:12:10,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:12:10,624 INFO L82 PathProgramCache]: Analyzing trace with hash -2038869813, now seen corresponding path program 1 times [2020-12-09 07:12:10,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:12:10,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419135293] [2020-12-09 07:12:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:12:10,645 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:12:10,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694647387] [2020-12-09 07:12:10,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:12:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:12:10,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 07:12:10,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:12:10,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 492 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-12-09 07:12:10,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:12:11,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 446 refuted. 0 times theorem prover too weak. 846 trivial. 0 not checked. [2020-12-09 07:12:11,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419135293] [2020-12-09 07:12:11,506 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:12:11,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694647387] [2020-12-09 07:12:11,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [192127221] [2020-12-09 07:12:11,509 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2020-12-09 07:12:11,509 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:12:11,509 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:12:11,509 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:12:11,509 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:12:16,860 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 07:12:16,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 07:12:16,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 7 [2020-12-09 07:12:16,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949397426] [2020-12-09 07:12:16,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 07:12:16,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:12:16,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 07:12:16,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:12:16,861 INFO L87 Difference]: Start difference. First operand 1412 states and 1863 transitions. Second operand 8 states. [2020-12-09 07:12:16,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:12:16,950 INFO L93 Difference]: Finished difference Result 2892 states and 3805 transitions. [2020-12-09 07:12:16,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:12:16,950 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 330 [2020-12-09 07:12:16,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:12:16,958 INFO L225 Difference]: With dead ends: 2892 [2020-12-09 07:12:16,958 INFO L226 Difference]: Without dead ends: 2381 [2020-12-09 07:12:16,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 650 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:12:16,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-12-09 07:12:17,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 1962. [2020-12-09 07:12:17,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1962 states. [2020-12-09 07:12:17,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2603 transitions. [2020-12-09 07:12:17,007 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2603 transitions. Word has length 330 [2020-12-09 07:12:17,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:12:17,007 INFO L481 AbstractCegarLoop]: Abstraction has 1962 states and 2603 transitions. [2020-12-09 07:12:17,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 07:12:17,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2603 transitions. [2020-12-09 07:12:17,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-12-09 07:12:17,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:12:17,010 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 9, 8, 8, 7, 7, 6, 6, 4, 4, 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] [2020-12-09 07:12:17,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable435,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:12:17,212 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:12:17,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:12:17,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1655473714, now seen corresponding path program 1 times [2020-12-09 07:12:17,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:12:17,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252270293] [2020-12-09 07:12:17,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:12:17,233 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:12:17,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311765548] [2020-12-09 07:12:17,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:12:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:12:17,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 07:12:17,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:12:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2603 backedges. 1229 proven. 82 refuted. 0 times theorem prover too weak. 1292 trivial. 0 not checked. [2020-12-09 07:12:17,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:12:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2603 backedges. 1229 proven. 82 refuted. 0 times theorem prover too weak. 1292 trivial. 0 not checked. [2020-12-09 07:12:18,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252270293] [2020-12-09 07:12:18,006 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:12:18,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311765548] [2020-12-09 07:12:18,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1418962944] [2020-12-09 07:12:18,008 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2020-12-09 07:12:18,008 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:12:18,009 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:12:18,009 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:12:18,009 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:12:23,340 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 07:12:23,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 07:12:23,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-09 07:12:23,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559411477] [2020-12-09 07:12:23,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 07:12:23,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:12:23,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 07:12:23,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-09 07:12:23,343 INFO L87 Difference]: Start difference. First operand 1962 states and 2603 transitions. Second operand 9 states. [2020-12-09 07:12:24,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:12:24,162 INFO L93 Difference]: Finished difference Result 5180 states and 6728 transitions. [2020-12-09 07:12:24,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-09 07:12:24,162 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 468 [2020-12-09 07:12:24,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:12:24,172 INFO L225 Difference]: With dead ends: 5180 [2020-12-09 07:12:24,172 INFO L226 Difference]: Without dead ends: 2929 [2020-12-09 07:12:24,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 954 GetRequests, 936 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-12-09 07:12:24,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-12-09 07:12:24,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1418. [2020-12-09 07:12:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1418 states. [2020-12-09 07:12:24,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 1827 transitions. [2020-12-09 07:12:24,221 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 1827 transitions. Word has length 468 [2020-12-09 07:12:24,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:12:24,221 INFO L481 AbstractCegarLoop]: Abstraction has 1418 states and 1827 transitions. [2020-12-09 07:12:24,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 07:12:24,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 1827 transitions. [2020-12-09 07:12:24,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2020-12-09 07:12:24,224 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:12:24,225 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 21, 21, 21, 19, 19, 17, 17, 15, 15, 13, 13, 13, 13, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 07:12:24,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable652 [2020-12-09 07:12:24,426 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:12:24,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:12:24,428 INFO L82 PathProgramCache]: Analyzing trace with hash 19970280, now seen corresponding path program 1 times [2020-12-09 07:12:24,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:12:24,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202533955] [2020-12-09 07:12:24,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:12:24,468 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:12:24,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299994428] [2020-12-09 07:12:24,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:12:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:12:24,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:12:24,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:12:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5098 backedges. 2749 proven. 0 refuted. 0 times theorem prover too weak. 2349 trivial. 0 not checked. [2020-12-09 07:12:24,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:12:25,347 INFO L134 CoverageAnalysis]: Checked inductivity of 5098 backedges. 2749 proven. 0 refuted. 0 times theorem prover too weak. 2349 trivial. 0 not checked. [2020-12-09 07:12:25,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202533955] [2020-12-09 07:12:25,348 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:12:25,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299994428] [2020-12-09 07:12:25,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:12:25,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-09 07:12:25,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663671836] [2020-12-09 07:12:25,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:12:25,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:12:25,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:12:25,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:12:25,349 INFO L87 Difference]: Start difference. First operand 1418 states and 1827 transitions. Second operand 4 states. [2020-12-09 07:12:25,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:12:25,467 INFO L93 Difference]: Finished difference Result 2837 states and 3655 transitions. [2020-12-09 07:12:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:12:25,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 632 [2020-12-09 07:12:25,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:12:25,472 INFO L225 Difference]: With dead ends: 2837 [2020-12-09 07:12:25,472 INFO L226 Difference]: Without dead ends: 1421 [2020-12-09 07:12:25,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1262 GetRequests, 1260 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:12:25,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2020-12-09 07:12:25,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1418. [2020-12-09 07:12:25,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1418 states. [2020-12-09 07:12:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 1817 transitions. [2020-12-09 07:12:25,514 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 1817 transitions. Word has length 632 [2020-12-09 07:12:25,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:12:25,514 INFO L481 AbstractCegarLoop]: Abstraction has 1418 states and 1817 transitions. [2020-12-09 07:12:25,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:12:25,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 1817 transitions. [2020-12-09 07:12:25,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2020-12-09 07:12:25,517 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:12:25,517 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 22, 22, 22, 20, 20, 18, 18, 16, 16, 14, 14, 14, 14, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-09 07:12:25,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable869 [2020-12-09 07:12:25,719 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:12:25,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:12:25,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1722472654, now seen corresponding path program 2 times [2020-12-09 07:12:25,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:12:25,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618044929] [2020-12-09 07:12:25,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:12:25,742 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:12:25,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27259958] [2020-12-09 07:12:25,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:12:25,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-12-09 07:12:25,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 07:12:25,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:12:25,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:12:26,256 INFO L134 CoverageAnalysis]: Checked inductivity of 5539 backedges. 3065 proven. 0 refuted. 0 times theorem prover too weak. 2474 trivial. 0 not checked. [2020-12-09 07:12:26,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:12:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5539 backedges. 3065 proven. 0 refuted. 0 times theorem prover too weak. 2474 trivial. 0 not checked. [2020-12-09 07:12:26,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618044929] [2020-12-09 07:12:26,668 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:12:26,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27259958] [2020-12-09 07:12:26,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:12:26,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-09 07:12:26,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65870844] [2020-12-09 07:12:26,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:12:26,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:12:26,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:12:26,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:12:26,670 INFO L87 Difference]: Start difference. First operand 1418 states and 1817 transitions. Second operand 4 states. [2020-12-09 07:12:26,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:12:26,805 INFO L93 Difference]: Finished difference Result 2882 states and 3695 transitions. [2020-12-09 07:12:26,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:12:26,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 660 [2020-12-09 07:12:26,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:12:26,810 INFO L225 Difference]: With dead ends: 2882 [2020-12-09 07:12:26,810 INFO L226 Difference]: Without dead ends: 1454 [2020-12-09 07:12:26,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1318 GetRequests, 1316 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:12:26,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2020-12-09 07:12:26,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1454. [2020-12-09 07:12:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-12-09 07:12:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1862 transitions. [2020-12-09 07:12:26,855 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1862 transitions. Word has length 660 [2020-12-09 07:12:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:12:26,855 INFO L481 AbstractCegarLoop]: Abstraction has 1454 states and 1862 transitions. [2020-12-09 07:12:26,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:12:26,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1862 transitions. [2020-12-09 07:12:26,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2020-12-09 07:12:26,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:12:26,859 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 24, 22, 22, 22, 20, 20, 18, 18, 16, 16, 14, 14, 14, 14, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:12:27,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable870 [2020-12-09 07:12:27,060 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:12:27,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:12:27,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1599274411, now seen corresponding path program 1 times [2020-12-09 07:12:27,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:12:27,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196398233] [2020-12-09 07:12:27,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:12:27,105 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:12:27,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [337631037] [2020-12-09 07:12:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:12:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:12:27,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:12:27,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:12:27,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5681 backedges. 3075 proven. 0 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2020-12-09 07:12:27,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:12:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 5681 backedges. 3075 proven. 0 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2020-12-09 07:12:28,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196398233] [2020-12-09 07:12:28,097 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:12:28,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337631037] [2020-12-09 07:12:28,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:12:28,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-09 07:12:28,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515618627] [2020-12-09 07:12:28,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:12:28,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:12:28,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:12:28,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:12:28,099 INFO L87 Difference]: Start difference. First operand 1454 states and 1862 transitions. Second operand 4 states. [2020-12-09 07:12:28,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:12:28,208 INFO L93 Difference]: Finished difference Result 1932 states and 2479 transitions. [2020-12-09 07:12:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:12:28,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 672 [2020-12-09 07:12:28,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:12:28,209 INFO L225 Difference]: With dead ends: 1932 [2020-12-09 07:12:28,209 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 07:12:28,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1342 GetRequests, 1340 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:12:28,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 07:12:28,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 07:12:28,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 07:12:28,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 07:12:28,211 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 672 [2020-12-09 07:12:28,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:12:28,211 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 07:12:28,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:12:28,211 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 07:12:28,211 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 07:12:28,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable871 [2020-12-09 07:12:28,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 07:12:28,590 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 166 [2020-12-09 07:12:28,755 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 166 [2020-12-09 07:12:28,961 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 179 [2020-12-09 07:12:29,181 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 166 [2020-12-09 07:12:29,416 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-12-09 07:12:29,916 WARN L197 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 71 [2020-12-09 07:12:30,034 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2020-12-09 07:12:30,204 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2020-12-09 07:12:30,704 WARN L197 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 71 [2020-12-09 07:12:30,825 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 29 [2020-12-09 07:12:31,017 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2020-12-09 07:12:31,132 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 39 [2020-12-09 07:12:31,402 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 44 [2020-12-09 07:12:31,931 WARN L197 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 71 [2020-12-09 07:12:32,048 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-12-09 07:12:32,160 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-12-09 07:12:32,703 WARN L197 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 57 [2020-12-09 07:12:32,844 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2020-12-09 07:12:33,319 WARN L197 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 71 [2020-12-09 07:12:33,426 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-12-09 07:12:33,517 INFO L262 CegarLoopResult]: For program point L630(lines 630 639) no Hoare annotation was computed. [2020-12-09 07:12:33,517 INFO L262 CegarLoopResult]: For program point L630-2(lines 629 651) no Hoare annotation was computed. [2020-12-09 07:12:33,517 INFO L258 CegarLoopResult]: At program point L399(lines 390 421) the Hoare annotation is: (let ((.cse0 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse2 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse6 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576)) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) .cse7 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse7 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-12-09 07:12:33,518 INFO L258 CegarLoopResult]: At program point L168(lines 167 606) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (let ((.cse2 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8464)) (.cse1 (not .cse0))) (or (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 8576) (<= ULTIMATE.start_ssl3_accept_~s__state~0 8448) (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and (or (and (= 3 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0) (and (= 8640 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse1)) .cse2) (and .cse2 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse1)))) [2020-12-09 07:12:33,518 INFO L258 CegarLoopResult]: At program point L135(lines 128 619) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse3 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse4 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse6 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse8 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576)) (.cse9 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4)) (.cse10 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (and (or (and .cse0 .cse1 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0))) (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0)))) [2020-12-09 07:12:33,518 INFO L262 CegarLoopResult]: For program point L367(lines 367 371) no Hoare annotation was computed. [2020-12-09 07:12:33,518 INFO L262 CegarLoopResult]: For program point L632(lines 632 636) no Hoare annotation was computed. [2020-12-09 07:12:33,518 INFO L262 CegarLoopResult]: For program point L401(lines 401 407) no Hoare annotation was computed. [2020-12-09 07:12:33,518 INFO L258 CegarLoopResult]: At program point L203(lines 203 594) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8672)))) (or (and (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (and (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8673)) .cse0))) [2020-12-09 07:12:33,518 INFO L262 CegarLoopResult]: For program point L170(lines 170 605) no Hoare annotation was computed. [2020-12-09 07:12:33,518 INFO L262 CegarLoopResult]: For program point L137(lines 137 616) no Hoare annotation was computed. [2020-12-09 07:12:33,518 INFO L258 CegarLoopResult]: At program point L104(lines 104 627) the Hoare annotation is: (let ((.cse7 (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (let ((.cse4 (not .cse7))) (let ((.cse1 (or (and (= 3 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse7) (and (= 8640 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse4))) (.cse3 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse0 (= 3 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse5 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8672)) (.cse6 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (or (and .cse0 .cse1 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8448) .cse2) (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 8576) (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576) .cse3) (and (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 1)) (= ULTIMATE.start_ssl3_accept_~s__state~0 3) (and .cse1 (= ULTIMATE.start_ssl3_accept_~s__state~0 8640) .cse4) (and (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480)) .cse5 .cse6 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8657)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8672)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)) .cse3) (and (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse4) (and .cse0 .cse5 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~0)) (and (= ULTIMATE.start_ssl3_accept_~blastFlag~0 0) .cse6 .cse2 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8464)))))) [2020-12-09 07:12:33,518 INFO L262 CegarLoopResult]: For program point L468(lines 468 472) no Hoare annotation was computed. [2020-12-09 07:12:33,518 INFO L258 CegarLoopResult]: At program point L204(lines 200 595) the Hoare annotation is: (let ((.cse0 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~0))) (or (and (= 3 ULTIMATE.start_ssl3_accept_~blastFlag~0) (<= ULTIMATE.start_ssl3_accept_~s__state~0 8672) .cse0) (and .cse0 (not (= 12292 ULTIMATE.start_ssl3_accept_~s__state~0)) (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-12-09 07:12:33,518 INFO L262 CegarLoopResult]: For program point L503-2(lines 211 589) no Hoare annotation was computed. [2020-12-09 07:12:33,518 INFO L262 CegarLoopResult]: For program point L239(lines 239 244) no Hoare annotation was computed. [2020-12-09 07:12:33,518 INFO L262 CegarLoopResult]: For program point L173(lines 173 604) no Hoare annotation was computed. [2020-12-09 07:12:33,518 INFO L262 CegarLoopResult]: For program point L140(lines 140 615) no Hoare annotation was computed. [2020-12-09 07:12:33,518 INFO L262 CegarLoopResult]: For program point L107(lines 107 626) no Hoare annotation was computed. [2020-12-09 07:12:33,519 INFO L258 CegarLoopResult]: At program point L174(lines 170 605) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse3 (< ULTIMATE.start_ssl3_accept_~s__state~0 8640)) (.cse4 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse5 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse6 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse7 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse8 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse9 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) .cse9 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse9 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-12-09 07:12:33,519 INFO L258 CegarLoopResult]: At program point L141(lines 137 616) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse3 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse6 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576)) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse7 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (and (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 1) .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0))) (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0)))) [2020-12-09 07:12:33,519 INFO L262 CegarLoopResult]: For program point L274(lines 274 278) no Hoare annotation was computed. [2020-12-09 07:12:33,519 INFO L262 CegarLoopResult]: For program point L308-2(lines 211 589) no Hoare annotation was computed. [2020-12-09 07:12:33,519 INFO L262 CegarLoopResult]: For program point L176(lines 176 603) no Hoare annotation was computed. [2020-12-09 07:12:33,519 INFO L262 CegarLoopResult]: For program point L143(lines 143 614) no Hoare annotation was computed. [2020-12-09 07:12:33,519 INFO L262 CegarLoopResult]: For program point L110(lines 110 625) no Hoare annotation was computed. [2020-12-09 07:12:33,519 INFO L262 CegarLoopResult]: For program point L441-1(lines 441 453) no Hoare annotation was computed. [2020-12-09 07:12:33,519 INFO L258 CegarLoopResult]: At program point L409(lines 400 420) the Hoare annotation is: (let ((.cse0 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse2 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse6 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576)) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) .cse7 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse7 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-12-09 07:12:33,519 INFO L262 CegarLoopResult]: For program point L343-2(lines 211 589) no Hoare annotation was computed. [2020-12-09 07:12:33,519 INFO L265 CegarLoopResult]: At program point L674(lines 66 676) the Hoare annotation is: true [2020-12-09 07:12:33,519 INFO L262 CegarLoopResult]: For program point L542(lines 542 547) no Hoare annotation was computed. [2020-12-09 07:12:33,519 INFO L262 CegarLoopResult]: For program point L179(lines 179 602) no Hoare annotation was computed. [2020-12-09 07:12:33,519 INFO L262 CegarLoopResult]: For program point L146(lines 146 613) no Hoare annotation was computed. [2020-12-09 07:12:33,519 INFO L262 CegarLoopResult]: For program point L113(lines 113 624) no Hoare annotation was computed. [2020-12-09 07:12:33,519 INFO L262 CegarLoopResult]: For program point L444(lines 444 449) no Hoare annotation was computed. [2020-12-09 07:12:33,519 INFO L258 CegarLoopResult]: At program point L180(lines 176 603) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse3 (< ULTIMATE.start_ssl3_accept_~s__state~0 8640)) (.cse4 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse5 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse6 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse7 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse8 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse9 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) .cse9 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse9 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-12-09 07:12:33,520 INFO L258 CegarLoopResult]: At program point L147(lines 143 614) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse3 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse4 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse6 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse8 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576)) (.cse9 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) .cse9 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse9 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-12-09 07:12:33,520 INFO L262 CegarLoopResult]: For program point L412(lines 412 416) no Hoare annotation was computed. [2020-12-09 07:12:33,520 INFO L258 CegarLoopResult]: At program point L214(lines 107 626) the Hoare annotation is: (let ((.cse0 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8673)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480)) (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8657)) (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8672)) (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544)) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8656)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (and (<= ULTIMATE.start_ssl3_accept_~s__state~0 8448) (or (and (= ULTIMATE.start_ssl3_accept_~blastFlag~0 0) .cse0) (and .cse0 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)))))) [2020-12-09 07:12:33,520 INFO L262 CegarLoopResult]: For program point L182(lines 182 601) no Hoare annotation was computed. [2020-12-09 07:12:33,520 INFO L262 CegarLoopResult]: For program point L149(lines 149 612) no Hoare annotation was computed. [2020-12-09 07:12:33,520 INFO L262 CegarLoopResult]: For program point L116(lines 116 623) no Hoare annotation was computed. [2020-12-09 07:12:33,520 INFO L262 CegarLoopResult]: For program point L480(lines 480 484) no Hoare annotation was computed. [2020-12-09 07:12:33,520 INFO L262 CegarLoopResult]: For program point L85-1(lines 66 676) no Hoare annotation was computed. [2020-12-09 07:12:33,520 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 07:12:33,520 INFO L262 CegarLoopResult]: For program point L185(lines 185 600) no Hoare annotation was computed. [2020-12-09 07:12:33,520 INFO L262 CegarLoopResult]: For program point L152(lines 152 611) no Hoare annotation was computed. [2020-12-09 07:12:33,520 INFO L262 CegarLoopResult]: For program point L119(lines 119 622) no Hoare annotation was computed. [2020-12-09 07:12:33,520 INFO L262 CegarLoopResult]: For program point L351(lines 351 382) no Hoare annotation was computed. [2020-12-09 07:12:33,520 INFO L258 CegarLoopResult]: At program point L186(lines 182 601) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse3 (< ULTIMATE.start_ssl3_accept_~s__state~0 8640)) (.cse4 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse5 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse6 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse7 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse8 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse9 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) .cse9 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse9 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-12-09 07:12:33,520 INFO L258 CegarLoopResult]: At program point L153(lines 149 612) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse3 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse4 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse6 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse8 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576)) (.cse9 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) .cse9 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse9 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-12-09 07:12:33,520 INFO L262 CegarLoopResult]: For program point L219-2(lines 211 589) no Hoare annotation was computed. [2020-12-09 07:12:33,520 INFO L262 CegarLoopResult]: For program point L188(lines 188 599) no Hoare annotation was computed. [2020-12-09 07:12:33,521 INFO L262 CegarLoopResult]: For program point L155(lines 155 610) no Hoare annotation was computed. [2020-12-09 07:12:33,521 INFO L262 CegarLoopResult]: For program point L122(lines 122 621) no Hoare annotation was computed. [2020-12-09 07:12:33,521 INFO L262 CegarLoopResult]: For program point L552(lines 552 556) no Hoare annotation was computed. [2020-12-09 07:12:33,521 INFO L262 CegarLoopResult]: For program point L354(lines 354 381) no Hoare annotation was computed. [2020-12-09 07:12:33,521 INFO L262 CegarLoopResult]: For program point L354-1(lines 354 381) no Hoare annotation was computed. [2020-12-09 07:12:33,521 INFO L258 CegarLoopResult]: At program point L123(lines 119 622) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse3 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse6 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse7 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (not (= 8640 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2020-12-09 07:12:33,521 INFO L258 CegarLoopResult]: At program point L553(lines 66 676) the Hoare annotation is: false [2020-12-09 07:12:33,521 INFO L262 CegarLoopResult]: For program point L355(lines 355 378) no Hoare annotation was computed. [2020-12-09 07:12:33,521 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 07:12:33,521 INFO L262 CegarLoopResult]: For program point L256(lines 256 268) no Hoare annotation was computed. [2020-12-09 07:12:33,521 INFO L262 CegarLoopResult]: For program point L257(lines 257 262) no Hoare annotation was computed. [2020-12-09 07:12:33,521 INFO L262 CegarLoopResult]: For program point L191(lines 191 598) no Hoare annotation was computed. [2020-12-09 07:12:33,521 INFO L262 CegarLoopResult]: For program point L158(lines 158 609) no Hoare annotation was computed. [2020-12-09 07:12:33,521 INFO L258 CegarLoopResult]: At program point L125(lines 125 620) the Hoare annotation is: (let ((.cse8 (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (let ((.cse2 (not .cse8))) (let ((.cse5 (and (= 3 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse8)) (.cse6 (and (= 8640 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse2)) (.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse4 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481))) (.cse3 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse7 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8672))) (or (and .cse0 (not (= 12292 ULTIMATE.start_ssl3_accept_~s__state~0)) (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse1 .cse2) (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 8576) .cse0 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576) .cse1 .cse3) (and (= ULTIMATE.start_ssl3_accept_~blastFlag~0 0) .cse4 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8464)) (and (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 1)) (and (<= ULTIMATE.start_ssl3_accept_~s__state~0 8448) (or .cse4 .cse5 .cse6)) (and (or .cse5 .cse6) (= ULTIMATE.start_ssl3_accept_~s__state~0 8640) .cse2) (and (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545)) .cse0 .cse7 .cse4 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8657)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8672)) .cse1 .cse3) (and (= 3 ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse7 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~0)))))) [2020-12-09 07:12:33,521 INFO L262 CegarLoopResult]: For program point L390(lines 390 421) no Hoare annotation was computed. [2020-12-09 07:12:33,521 INFO L262 CegarLoopResult]: For program point L291-2(lines 211 589) no Hoare annotation was computed. [2020-12-09 07:12:33,521 INFO L258 CegarLoopResult]: At program point L192(lines 188 599) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse3 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse4 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse6 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse8 (< ULTIMATE.start_ssl3_accept_~s__state~0 8656)) (.cse9 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) .cse9 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-12-09 07:12:33,522 INFO L258 CegarLoopResult]: At program point L159(lines 155 610) the Hoare annotation is: (let ((.cse0 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse2 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse6 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576)) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) .cse7 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse7 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-12-09 07:12:33,522 INFO L262 CegarLoopResult]: For program point L523(lines 523 528) no Hoare annotation was computed. [2020-12-09 07:12:33,522 INFO L262 CegarLoopResult]: For program point L391(lines 391 397) no Hoare annotation was computed. [2020-12-09 07:12:33,522 INFO L262 CegarLoopResult]: For program point L358(lines 358 377) no Hoare annotation was computed. [2020-12-09 07:12:33,522 INFO L258 CegarLoopResult]: At program point L590(lines 101 658) the Hoare annotation is: (let ((.cse7 (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (let ((.cse4 (not .cse7))) (let ((.cse1 (or (and (= 3 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse7) (and (= 8640 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse4))) (.cse3 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse0 (= 3 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse5 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8672)) (.cse6 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (or (and .cse0 .cse1 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8448) .cse2) (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 8576) (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576) .cse3) (and (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 1)) (= ULTIMATE.start_ssl3_accept_~s__state~0 3) (and .cse1 (= ULTIMATE.start_ssl3_accept_~s__state~0 8640) .cse4) (and (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480)) .cse5 .cse6 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8657)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8672)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)) .cse3) (and (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse4) (and .cse0 .cse5 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~0)) (and (= ULTIMATE.start_ssl3_accept_~blastFlag~0 0) .cse6 .cse2 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8464)))))) [2020-12-09 07:12:33,522 INFO L262 CegarLoopResult]: For program point L557(lines 557 561) no Hoare annotation was computed. [2020-12-09 07:12:33,522 INFO L262 CegarLoopResult]: For program point L491(lines 491 495) no Hoare annotation was computed. [2020-12-09 07:12:33,522 INFO L262 CegarLoopResult]: For program point L359-2(lines 358 375) no Hoare annotation was computed. [2020-12-09 07:12:33,522 INFO L262 CegarLoopResult]: For program point L194(lines 194 597) no Hoare annotation was computed. [2020-12-09 07:12:33,522 INFO L262 CegarLoopResult]: For program point L161(lines 161 608) no Hoare annotation was computed. [2020-12-09 07:12:33,522 INFO L262 CegarLoopResult]: For program point L128(lines 128 619) no Hoare annotation was computed. [2020-12-09 07:12:33,522 INFO L262 CegarLoopResult]: For program point L459(lines 459 463) no Hoare annotation was computed. [2020-12-09 07:12:33,522 INFO L262 CegarLoopResult]: For program point L327-1(lines 327 336) no Hoare annotation was computed. [2020-12-09 07:12:33,522 INFO L265 CegarLoopResult]: At program point L659(lines 100 660) the Hoare annotation is: true [2020-12-09 07:12:33,522 INFO L262 CegarLoopResult]: For program point L197(lines 197 596) no Hoare annotation was computed. [2020-12-09 07:12:33,522 INFO L262 CegarLoopResult]: For program point L164(lines 164 607) no Hoare annotation was computed. [2020-12-09 07:12:33,522 INFO L262 CegarLoopResult]: For program point L131(lines 131 618) no Hoare annotation was computed. [2020-12-09 07:12:33,522 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 670) no Hoare annotation was computed. [2020-12-09 07:12:33,522 INFO L262 CegarLoopResult]: For program point L231(lines 231 248) no Hoare annotation was computed. [2020-12-09 07:12:33,522 INFO L258 CegarLoopResult]: At program point L198(lines 194 597) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8673))) (.cse1 (< 8641 ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse3 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= 12292 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481))) (.cse6 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8672)))) (or (and (<= ULTIMATE.start_ssl3_accept_~s__state~0 8672) (or (and .cse0 (= 3 ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)))) (and .cse0 .cse1 .cse2 .cse3 .cse4 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse5 .cse6 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-12-09 07:12:33,523 INFO L258 CegarLoopResult]: At program point L165(lines 161 608) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse3 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse4 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse6 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576)) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse7 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) .cse7 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2020-12-09 07:12:33,523 INFO L262 CegarLoopResult]: For program point L231-2(lines 211 589) no Hoare annotation was computed. [2020-12-09 07:12:33,523 INFO L262 CegarLoopResult]: For program point L628(lines 628 656) no Hoare annotation was computed. [2020-12-09 07:12:33,523 INFO L262 CegarLoopResult]: For program point L331(lines 331 335) no Hoare annotation was computed. [2020-12-09 07:12:33,523 INFO L262 CegarLoopResult]: For program point L629(lines 629 653) no Hoare annotation was computed. [2020-12-09 07:12:33,523 INFO L262 CegarLoopResult]: For program point L464(lines 464 475) no Hoare annotation was computed. [2020-12-09 07:12:33,523 INFO L262 CegarLoopResult]: For program point L530-2(lines 211 589) no Hoare annotation was computed. [2020-12-09 07:12:33,523 INFO L262 CegarLoopResult]: For program point L431(lines 431 435) no Hoare annotation was computed. [2020-12-09 07:12:33,523 INFO L258 CegarLoopResult]: At program point L365(lines 348 383) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse3 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse4 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse6 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse8 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576)) (.cse9 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) .cse9 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse9 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-12-09 07:12:33,523 INFO L262 CegarLoopResult]: For program point L233(lines 233 238) no Hoare annotation was computed. [2020-12-09 07:12:33,523 INFO L262 CegarLoopResult]: For program point L200(lines 200 595) no Hoare annotation was computed. [2020-12-09 07:12:33,523 INFO L262 CegarLoopResult]: For program point L167(lines 167 606) no Hoare annotation was computed. [2020-12-09 07:12:33,523 INFO L262 CegarLoopResult]: For program point L134(lines 134 617) no Hoare annotation was computed. [2020-12-09 07:12:33,523 INFO L258 CegarLoopResult]: At program point L101-2(lines 101 658) the Hoare annotation is: (let ((.cse7 (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (let ((.cse4 (not .cse7))) (let ((.cse1 (or (and (= 3 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse7) (and (= 8640 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse4))) (.cse3 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse0 (= 3 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse5 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8672)) (.cse6 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (or (and .cse0 .cse1 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8448) .cse2) (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 8576) (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576) .cse3) (and (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 1)) (= ULTIMATE.start_ssl3_accept_~s__state~0 3) (and .cse1 (= ULTIMATE.start_ssl3_accept_~s__state~0 8640) .cse4) (and (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480)) .cse5 .cse6 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8657)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8672)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)) .cse3) (and (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse4) (and .cse0 .cse5 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~0)) (and (= ULTIMATE.start_ssl3_accept_~blastFlag~0 0) .cse6 .cse2 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8464)))))) [2020-12-09 07:12:33,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:12:33 BoogieIcfgContainer [2020-12-09 07:12:33,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:12:33,549 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:12:33,549 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:12:33,549 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:12:33,549 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:11:52" (3/4) ... [2020-12-09 07:12:33,551 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 07:12:33,563 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2020-12-09 07:12:33,564 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-09 07:12:33,565 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 07:12:33,566 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 07:12:33,627 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_52d02df1-8d62-41ae-944f-3813f93f7de0/bin/utaipan/witness.graphml [2020-12-09 07:12:33,627 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:12:33,628 INFO L168 Benchmark]: Toolchain (without parser) took 41855.08 ms. Allocated memory was 113.2 MB in the beginning and 736.1 MB in the end (delta: 622.9 MB). Free memory was 82.2 MB in the beginning and 423.2 MB in the end (delta: -341.0 MB). Peak memory consumption was 284.4 MB. Max. memory is 16.1 GB. [2020-12-09 07:12:33,628 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 79.7 MB. Free memory was 48.5 MB in the beginning and 48.4 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:12:33,628 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.54 ms. Allocated memory is still 113.2 MB. Free memory was 81.9 MB in the beginning and 66.6 MB in the end (delta: 15.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 07:12:33,629 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.89 ms. Allocated memory is still 113.2 MB. Free memory was 66.6 MB in the beginning and 64.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:12:33,629 INFO L168 Benchmark]: Boogie Preprocessor took 27.70 ms. Allocated memory is still 113.2 MB. Free memory was 64.0 MB in the beginning and 61.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:12:33,629 INFO L168 Benchmark]: RCFGBuilder took 778.10 ms. Allocated memory is still 113.2 MB. Free memory was 61.9 MB in the beginning and 80.6 MB in the end (delta: -18.7 MB). Peak memory consumption was 43.0 MB. Max. memory is 16.1 GB. [2020-12-09 07:12:33,629 INFO L168 Benchmark]: TraceAbstraction took 40681.86 ms. Allocated memory was 113.2 MB in the beginning and 736.1 MB in the end (delta: 622.9 MB). Free memory was 80.6 MB in the beginning and 434.7 MB in the end (delta: -354.1 MB). Peak memory consumption was 457.7 MB. Max. memory is 16.1 GB. [2020-12-09 07:12:33,630 INFO L168 Benchmark]: Witness Printer took 78.45 ms. Allocated memory is still 736.1 MB. Free memory was 434.7 MB in the beginning and 423.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 07:12:33,631 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 79.7 MB. Free memory was 48.5 MB in the beginning and 48.4 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.54 ms. Allocated memory is still 113.2 MB. Free memory was 81.9 MB in the beginning and 66.6 MB in the end (delta: 15.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.89 ms. Allocated memory is still 113.2 MB. Free memory was 66.6 MB in the beginning and 64.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.70 ms. Allocated memory is still 113.2 MB. Free memory was 64.0 MB in the beginning and 61.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 778.10 ms. Allocated memory is still 113.2 MB. Free memory was 61.9 MB in the beginning and 80.6 MB in the end (delta: -18.7 MB). Peak memory consumption was 43.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 40681.86 ms. Allocated memory was 113.2 MB in the beginning and 736.1 MB in the end (delta: 622.9 MB). Free memory was 80.6 MB in the beginning and 434.7 MB in the end (delta: -354.1 MB). Peak memory consumption was 457.7 MB. Max. memory is 16.1 GB. * Witness Printer took 78.45 ms. Allocated memory is still 736.1 MB. Free memory was 434.7 MB in the beginning and 423.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 670]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 400]: Loop Invariant Derived loop invariant: (((((((((!(8496 == s__state) && !(s__state == 8480)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && 8448 <= s__state) && !(s__state == 8481)) && 2 == blastFlag) || (((((((((!(8496 == s__state) && !(s__state == 8480)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) - InvariantResult [Line: 182]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && s__state < 8640) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && 8448 <= s__state) && !(s__state == 8481)) && 2 == blastFlag) || (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && s__state < 8640) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: ((((((((((3 == blastFlag && ((3 == s__s3__tmp__next_state___0 && s__hit == 0) || (8640 == s__s3__tmp__next_state___0 && !(s__hit == 0)))) && s__state <= 8448) && 8448 <= s__state) || ((s__s3__tmp__next_state___0 <= 8576 && s__state <= 8576) && 2 == blastFlag)) || (8496 == s__state && blastFlag == 1)) || s__state == 3) || ((((3 == s__s3__tmp__next_state___0 && s__hit == 0) || (8640 == s__s3__tmp__next_state___0 && !(s__hit == 0))) && s__state == 8640) && !(s__hit == 0))) || (((((((((!(s__state == 8545) && !(s__state == 8480)) && s__state <= 8672) && !(8448 == s__state)) && !(8497 == s__state)) && !(s__state == 8561)) && !(s__state == 8657)) && !(s__state == 8672)) && !(s__state == 8481)) && 2 == blastFlag)) || (blastFlag < 4 && !(s__hit == 0))) || ((3 == blastFlag && s__state <= 8672) && 8672 <= s__state)) || (((blastFlag == 0 && !(8448 == s__state)) && 8448 <= s__state) && s__state <= 8464) - InvariantResult [Line: 348]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && 8448 <= s__state) && !(s__state == 8481)) && 2 == blastFlag) || (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) || (((((((((((((!(s__state == 8545) && !(8496 == s__state)) && blastFlag == 0) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) || (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && 2 == blastFlag)) && 8448 <= s__state) - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: ((((((((((3 == blastFlag && ((3 == s__s3__tmp__next_state___0 && s__hit == 0) || (8640 == s__s3__tmp__next_state___0 && !(s__hit == 0)))) && s__state <= 8448) && 8448 <= s__state) || ((s__s3__tmp__next_state___0 <= 8576 && s__state <= 8576) && 2 == blastFlag)) || (8496 == s__state && blastFlag == 1)) || s__state == 3) || ((((3 == s__s3__tmp__next_state___0 && s__hit == 0) || (8640 == s__s3__tmp__next_state___0 && !(s__hit == 0))) && s__state == 8640) && !(s__hit == 0))) || (((((((((!(s__state == 8545) && !(s__state == 8480)) && s__state <= 8672) && !(8448 == s__state)) && !(8497 == s__state)) && !(s__state == 8561)) && !(s__state == 8657)) && !(s__state == 8672)) && !(s__state == 8481)) && 2 == blastFlag)) || (blastFlag < 4 && !(s__hit == 0))) || ((3 == blastFlag && s__state <= 8672) && 8672 <= s__state)) || (((blastFlag == 0 && !(8448 == s__state)) && 8448 <= s__state) && s__state <= 8464) - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: ((((s__s3__tmp__next_state___0 <= 8576 && s__state <= 8448) && 8448 <= s__state) && 2 == blastFlag) || (((3 == s__s3__tmp__next_state___0 && s__hit == 0) || (8640 == s__s3__tmp__next_state___0 && !(s__hit == 0))) && s__state <= 8464)) || ((s__state <= 8464 && blastFlag < 4) && !(s__hit == 0)) - InvariantResult [Line: 200]: Loop Invariant Derived loop invariant: ((3 == blastFlag && s__state <= 8672) && 8672 <= s__state) || (((8672 <= s__state && !(12292 == s__state)) && blastFlag < 4) && !(s__hit == 0)) - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && 8448 <= s__state) && !(s__state == 8481)) && 2 == blastFlag) || (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) - InvariantResult [Line: 161]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) || (((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && s__state <= 8576) && 8448 <= s__state) && !(s__state == 8481)) && 2 == blastFlag) - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__hit == 0)) || ((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && !(8640 == s__s3__tmp__next_state___0)) && 8448 <= s__state) && 2 == blastFlag) - InvariantResult [Line: 194]: Loop Invariant Derived loop invariant: (s__state <= 8672 && ((((((((!(s__state == 8673) && 3 == blastFlag) && 8641 < s__state) && !(s__state == 8480)) && !(8448 == s__state)) && !(12292 == s__state)) && !(s__state == 8481)) && !(s__state == 8672)) || (((((((!(s__state == 8673) && 8641 < s__state) && !(s__state == 8480)) && !(8448 == s__state)) && !(12292 == s__state)) && !(s__state == 8481)) && !(s__state == 8672)) && 2 == blastFlag))) || ((((((((!(s__state == 8673) && 8641 < s__state) && !(s__state == 8480)) && !(8448 == s__state)) && !(12292 == s__state)) && blastFlag < 4) && !(s__state == 8481)) && !(s__state == 8672)) && !(s__hit == 0)) - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: ((((((((((!(s__state == 8480) && !(12292 == s__state)) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) || ((((s__s3__tmp__next_state___0 <= 8576 && !(s__state == 8480)) && s__state <= 8576) && !(s__state == 8481)) && 2 == blastFlag)) || ((blastFlag == 0 && !(8448 == s__state)) && s__state <= 8464)) || (8496 == s__state && blastFlag == 1)) || (s__state <= 8448 && ((!(8448 == s__state) || (3 == s__s3__tmp__next_state___0 && s__hit == 0)) || (8640 == s__s3__tmp__next_state___0 && !(s__hit == 0))))) || ((((3 == s__s3__tmp__next_state___0 && s__hit == 0) || (8640 == s__s3__tmp__next_state___0 && !(s__hit == 0))) && s__state == 8640) && !(s__hit == 0))) || (((((((((!(s__state == 8545) && !(s__state == 8480)) && s__state <= 8672) && !(8448 == s__state)) && !(8497 == s__state)) && !(s__state == 8561)) && !(s__state == 8657)) && !(s__state == 8672)) && !(s__state == 8481)) && 2 == blastFlag)) || ((3 == blastFlag && s__state <= 8672) && 8672 <= s__state) - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && 8448 <= s__state) && !(s__state == 8481)) && 2 == blastFlag) || (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) - InvariantResult [Line: 176]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && s__state < 8640) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && 8448 <= s__state) && !(s__state == 8481)) && 2 == blastFlag) || (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && s__state < 8640) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) - InvariantResult [Line: 155]: Loop Invariant Derived loop invariant: (((((((((!(8496 == s__state) && !(s__state == 8480)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && 8448 <= s__state) && !(s__state == 8481)) && 2 == blastFlag) || (((((((((!(8496 == s__state) && !(s__state == 8480)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 188]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state < 8656) && 8448 <= s__state) && !(s__state == 8481)) && 2 == blastFlag) || ((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state < 8656) && !(s__state == 8481)) && !(s__hit == 0)) - InvariantResult [Line: 203]: Loop Invariant Derived loop invariant: ((blastFlag < 4 && !(s__state == 8672)) && !(s__hit == 0)) || (!(s__state == 8673) && !(s__state == 8672)) - InvariantResult [Line: 107]: Loop Invariant Derived loop invariant: ((((((((((((((!(s__state == 8545) && !(s__state == 8673)) && !(s__state == 8480)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && !(s__state == 8657)) && blastFlag < 4) && !(s__state == 8672)) && !(8496 == s__state)) && !(s__state == 8544)) && !(8448 == s__state)) && !(s__state == 8481)) && !(s__state == 8656)) && !(s__hit == 0)) || (s__state <= 8448 && ((blastFlag == 0 && !(8448 == s__state)) || (!(8448 == s__state) && 2 == blastFlag))) - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 8545) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) || ((((((((((!(s__state == 8545) && !(s__state == 8480)) && !(s__state == 8544)) && blastFlag == 1) && !(8448 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && !(s__state == 8481)) || ((((((((!(s__state == 8545) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && !(s__state == 8481)) && 2 == blastFlag)) && 8448 <= s__state) - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: ((((((((((3 == blastFlag && ((3 == s__s3__tmp__next_state___0 && s__hit == 0) || (8640 == s__s3__tmp__next_state___0 && !(s__hit == 0)))) && s__state <= 8448) && 8448 <= s__state) || ((s__s3__tmp__next_state___0 <= 8576 && s__state <= 8576) && 2 == blastFlag)) || (8496 == s__state && blastFlag == 1)) || s__state == 3) || ((((3 == s__s3__tmp__next_state___0 && s__hit == 0) || (8640 == s__s3__tmp__next_state___0 && !(s__hit == 0))) && s__state == 8640) && !(s__hit == 0))) || (((((((((!(s__state == 8545) && !(s__state == 8480)) && s__state <= 8672) && !(8448 == s__state)) && !(8497 == s__state)) && !(s__state == 8561)) && !(s__state == 8657)) && !(s__state == 8672)) && !(s__state == 8481)) && 2 == blastFlag)) || (blastFlag < 4 && !(s__hit == 0))) || ((3 == blastFlag && s__state <= 8672) && 8672 <= s__state)) || (((blastFlag == 0 && !(8448 == s__state)) && 8448 <= s__state) && s__state <= 8464) - InvariantResult [Line: 170]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && s__state < 8640) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && 8448 <= s__state) && !(s__state == 8481)) && 2 == blastFlag) || (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && s__state < 8640) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) - InvariantResult [Line: 390]: Loop Invariant Derived loop invariant: (((((((((!(8496 == s__state) && !(s__state == 8480)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && 8448 <= s__state) && !(s__state == 8481)) && 2 == blastFlag) || (((((((((!(8496 == s__state) && !(s__state == 8480)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 104 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 35.5s, OverallIterations: 30, TraceHistogramMax: 25, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3919 SDtfs, 3945 SDslu, 3250 SDs, 0 SdLazy, 5416 SolverSat, 1262 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8610 GetRequests, 8530 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1962occurred in iteration=26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 30 MinimizatonAttempts, 2826 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 26 LocationsWithAnnotation, 26 PreInvPairs, 324 NumberOfFragments, 2170 HoareAnnotationTreeSize, 26 FomulaSimplifications, 124019 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 26 FomulaSimplificationsInter, 24092 FormulaSimplificationTreeSizeReductionInter, 4.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 6130 NumberOfCodeBlocks, 5853 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 10367 ConstructedInterpolants, 0 QuantifiedInterpolants, 6348410 SizeOfPredicates, 14 NumberOfNonLiveVariables, 6833 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 44 InterpolantComputations, 34 PerfectInterpolantSequences, 47835/49476 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...