./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_srvr_3a.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_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/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 2cf89e99ec222c802fb7936bfc1d20c1ff03ad59 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:07:49,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 16:07:49,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 16:07:49,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 16:07:49,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 16:07:49,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 16:07:49,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 16:07:49,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 16:07:49,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 16:07:49,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 16:07:49,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 16:07:49,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 16:07:49,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 16:07:49,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 16:07:49,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 16:07:49,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 16:07:49,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 16:07:49,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 16:07:49,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 16:07:49,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 16:07:49,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 16:07:49,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 16:07:49,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 16:07:49,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 16:07:49,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 16:07:49,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 16:07:49,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 16:07:49,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 16:07:49,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 16:07:49,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 16:07:49,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 16:07:49,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 16:07:49,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 16:07:49,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 16:07:49,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 16:07:49,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 16:07:49,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 16:07:49,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 16:07:49,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 16:07:49,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 16:07:49,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 16:07:49,788 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 16:07:49,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 16:07:49,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 16:07:49,806 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 16:07:49,806 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 16:07:49,806 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 16:07:49,806 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 16:07:49,806 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 16:07:49,806 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 16:07:49,806 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 16:07:49,807 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 16:07:49,807 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 16:07:49,807 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 16:07:49,807 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 16:07:49,807 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 16:07:49,807 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 16:07:49,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 16:07:49,808 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 16:07:49,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 16:07:49,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 16:07:49,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 16:07:49,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 16:07:49,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 16:07:49,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 16:07:49,808 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 16:07:49,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 16:07:49,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 16:07:49,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 16:07:49,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 16:07:49,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 16:07:49,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 16:07:49,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 16:07:49,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 16:07:49,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 16:07:49,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 16:07:49,810 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 16:07:49,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 16:07:49,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 16:07:49,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 16:07:49,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 16:07:49,810 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_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cf89e99ec222c802fb7936bfc1d20c1ff03ad59 [2020-12-09 16:07:50,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 16:07:50,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 16:07:50,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 16:07:50,019 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 16:07:50,020 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 16:07:50,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c [2020-12-09 16:07:50,063 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/bin/utaipan/data/2923db488/fbda275ceafe471abe408fe9a48627d1/FLAG7ae685e7f [2020-12-09 16:07:50,462 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 16:07:50,463 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c [2020-12-09 16:07:50,475 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/bin/utaipan/data/2923db488/fbda275ceafe471abe408fe9a48627d1/FLAG7ae685e7f [2020-12-09 16:07:50,488 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/bin/utaipan/data/2923db488/fbda275ceafe471abe408fe9a48627d1 [2020-12-09 16:07:50,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 16:07:50,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 16:07:50,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 16:07:50,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 16:07:50,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 16:07:50,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:07:50" (1/1) ... [2020-12-09 16:07:50,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74ea7206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:07:50, skipping insertion in model container [2020-12-09 16:07:50,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:07:50" (1/1) ... [2020-12-09 16:07:50,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 16:07:50,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 16:07:50,692 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_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c[44164,44177] [2020-12-09 16:07:50,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:07:50,705 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 16:07:50,742 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_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c[44164,44177] [2020-12-09 16:07:50,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:07:50,754 INFO L208 MainTranslator]: Completed translation [2020-12-09 16:07:50,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:07:50 WrapperNode [2020-12-09 16:07:50,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 16:07:50,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 16:07:50,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 16:07:50,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 16:07:50,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:07:50" (1/1) ... [2020-12-09 16:07:50,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:07:50" (1/1) ... [2020-12-09 16:07:50,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 16:07:50,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 16:07:50,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 16:07:50,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 16:07:50,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:07:50" (1/1) ... [2020-12-09 16:07:50,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:07:50" (1/1) ... [2020-12-09 16:07:50,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:07:50" (1/1) ... [2020-12-09 16:07:50,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:07:50" (1/1) ... [2020-12-09 16:07:50,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:07:50" (1/1) ... [2020-12-09 16:07:50,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:07:50" (1/1) ... [2020-12-09 16:07:50,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:07:50" (1/1) ... [2020-12-09 16:07:50,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 16:07:50,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 16:07:50,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 16:07:50,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 16:07:50,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:07:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/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 16:07:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 16:07:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 16:07:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 16:07:50,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 16:07:50,989 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 16:07:51,321 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-12-09 16:07:51,321 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-12-09 16:07:51,524 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 16:07:51,524 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 16:07:51,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:07:51 BoogieIcfgContainer [2020-12-09 16:07:51,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 16:07:51,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 16:07:51,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 16:07:51,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 16:07:51,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:07:50" (1/3) ... [2020-12-09 16:07:51,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ab0587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:07:51, skipping insertion in model container [2020-12-09 16:07:51,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:07:50" (2/3) ... [2020-12-09 16:07:51,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ab0587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:07:51, skipping insertion in model container [2020-12-09 16:07:51,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:07:51" (3/3) ... [2020-12-09 16:07:51,535 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_3a.BV.c.cil.c [2020-12-09 16:07:51,548 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 16:07:51,551 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 16:07:51,561 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 16:07:51,579 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 16:07:51,579 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 16:07:51,579 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 16:07:51,579 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 16:07:51,579 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 16:07:51,580 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 16:07:51,580 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 16:07:51,580 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 16:07:51,591 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states. [2020-12-09 16:07:51,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-09 16:07:51,596 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:51,596 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 16:07:51,596 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:51,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:51,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1047767428, now seen corresponding path program 1 times [2020-12-09 16:07:51,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:51,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390700045] [2020-12-09 16:07:51,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:51,773 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 16:07:51,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390700045] [2020-12-09 16:07:51,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:51,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:07:51,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111256377] [2020-12-09 16:07:51,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:07:51,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:51,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:07:51,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:07:51,788 INFO L87 Difference]: Start difference. First operand 104 states. Second operand 3 states. [2020-12-09 16:07:51,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:51,975 INFO L93 Difference]: Finished difference Result 254 states and 448 transitions. [2020-12-09 16:07:51,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:07:51,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-09 16:07:51,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:51,986 INFO L225 Difference]: With dead ends: 254 [2020-12-09 16:07:51,987 INFO L226 Difference]: Without dead ends: 146 [2020-12-09 16:07:51,990 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 16:07:52,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-12-09 16:07:52,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 141. [2020-12-09 16:07:52,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-09 16:07:52,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 228 transitions. [2020-12-09 16:07:52,032 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 228 transitions. Word has length 39 [2020-12-09 16:07:52,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:52,032 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 228 transitions. [2020-12-09 16:07:52,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:07:52,032 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 228 transitions. [2020-12-09 16:07:52,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-09 16:07:52,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:52,034 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 16:07:52,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 16:07:52,034 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:52,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:52,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1886013428, now seen corresponding path program 1 times [2020-12-09 16:07:52,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:52,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172418104] [2020-12-09 16:07:52,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:52,097 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 16:07:52,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172418104] [2020-12-09 16:07:52,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:52,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:07:52,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982298427] [2020-12-09 16:07:52,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:07:52,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:52,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:07:52,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:07:52,101 INFO L87 Difference]: Start difference. First operand 141 states and 228 transitions. Second operand 3 states. [2020-12-09 16:07:52,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:52,256 INFO L93 Difference]: Finished difference Result 326 states and 536 transitions. [2020-12-09 16:07:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:07:52,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-09 16:07:52,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:52,259 INFO L225 Difference]: With dead ends: 326 [2020-12-09 16:07:52,259 INFO L226 Difference]: Without dead ends: 185 [2020-12-09 16:07:52,260 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 16:07:52,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-12-09 16:07:52,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 180. [2020-12-09 16:07:52,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-12-09 16:07:52,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 301 transitions. [2020-12-09 16:07:52,270 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 301 transitions. Word has length 40 [2020-12-09 16:07:52,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:52,271 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 301 transitions. [2020-12-09 16:07:52,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:07:52,271 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 301 transitions. [2020-12-09 16:07:52,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-09 16:07:52,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:52,273 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 16:07:52,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 16:07:52,273 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:52,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:52,274 INFO L82 PathProgramCache]: Analyzing trace with hash -149835480, now seen corresponding path program 1 times [2020-12-09 16:07:52,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:52,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604127837] [2020-12-09 16:07:52,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:52,320 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 16:07:52,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604127837] [2020-12-09 16:07:52,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:52,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:07:52,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54604298] [2020-12-09 16:07:52,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:07:52,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:52,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:07:52,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:07:52,322 INFO L87 Difference]: Start difference. First operand 180 states and 301 transitions. Second operand 3 states. [2020-12-09 16:07:52,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:52,441 INFO L93 Difference]: Finished difference Result 387 states and 654 transitions. [2020-12-09 16:07:52,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:07:52,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-09 16:07:52,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:52,443 INFO L225 Difference]: With dead ends: 387 [2020-12-09 16:07:52,443 INFO L226 Difference]: Without dead ends: 209 [2020-12-09 16:07:52,444 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 16:07:52,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-12-09 16:07:52,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-12-09 16:07:52,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-12-09 16:07:52,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 353 transitions. [2020-12-09 16:07:52,455 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 353 transitions. Word has length 66 [2020-12-09 16:07:52,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:52,455 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 353 transitions. [2020-12-09 16:07:52,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:07:52,455 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 353 transitions. [2020-12-09 16:07:52,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-09 16:07:52,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:52,458 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 16:07:52,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 16:07:52,458 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:52,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:52,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1574375233, now seen corresponding path program 1 times [2020-12-09 16:07:52,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:52,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608393628] [2020-12-09 16:07:52,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:52,496 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 16:07:52,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608393628] [2020-12-09 16:07:52,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:52,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:07:52,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400223202] [2020-12-09 16:07:52,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:07:52,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:52,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:07:52,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:07:52,497 INFO L87 Difference]: Start difference. First operand 209 states and 353 transitions. Second operand 3 states. [2020-12-09 16:07:52,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:52,588 INFO L93 Difference]: Finished difference Result 431 states and 728 transitions. [2020-12-09 16:07:52,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:07:52,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-09 16:07:52,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:52,590 INFO L225 Difference]: With dead ends: 431 [2020-12-09 16:07:52,590 INFO L226 Difference]: Without dead ends: 224 [2020-12-09 16:07:52,591 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 16:07:52,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-09 16:07:52,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2020-12-09 16:07:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-09 16:07:52,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 372 transitions. [2020-12-09 16:07:52,609 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 372 transitions. Word has length 77 [2020-12-09 16:07:52,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:52,610 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 372 transitions. [2020-12-09 16:07:52,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:07:52,610 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 372 transitions. [2020-12-09 16:07:52,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-09 16:07:52,612 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:52,612 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 16:07:52,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 16:07:52,612 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:52,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:52,613 INFO L82 PathProgramCache]: Analyzing trace with hash 460410402, now seen corresponding path program 1 times [2020-12-09 16:07:52,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:52,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049996134] [2020-12-09 16:07:52,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:52,666 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 16:07:52,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049996134] [2020-12-09 16:07:52,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:52,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:07:52,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051338321] [2020-12-09 16:07:52,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:07:52,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:52,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:07:52,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:07:52,667 INFO L87 Difference]: Start difference. First operand 222 states and 372 transitions. Second operand 3 states. [2020-12-09 16:07:52,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:52,776 INFO L93 Difference]: Finished difference Result 483 states and 815 transitions. [2020-12-09 16:07:52,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:07:52,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-09 16:07:52,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:52,778 INFO L225 Difference]: With dead ends: 483 [2020-12-09 16:07:52,778 INFO L226 Difference]: Without dead ends: 263 [2020-12-09 16:07:52,778 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 16:07:52,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-12-09 16:07:52,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 260. [2020-12-09 16:07:52,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-12-09 16:07:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 440 transitions. [2020-12-09 16:07:52,790 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 440 transitions. Word has length 77 [2020-12-09 16:07:52,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:52,791 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 440 transitions. [2020-12-09 16:07:52,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:07:52,791 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 440 transitions. [2020-12-09 16:07:52,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-09 16:07:52,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:52,792 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 16:07:52,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 16:07:52,792 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:52,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:52,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1193861236, now seen corresponding path program 1 times [2020-12-09 16:07:52,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:52,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526229389] [2020-12-09 16:07:52,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:52,828 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 16:07:52,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526229389] [2020-12-09 16:07:52,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:52,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:07:52,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522294236] [2020-12-09 16:07:52,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:07:52,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:52,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:07:52,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:07:52,829 INFO L87 Difference]: Start difference. First operand 260 states and 440 transitions. Second operand 3 states. [2020-12-09 16:07:52,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:52,911 INFO L93 Difference]: Finished difference Result 520 states and 880 transitions. [2020-12-09 16:07:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:07:52,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-09 16:07:52,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:52,913 INFO L225 Difference]: With dead ends: 520 [2020-12-09 16:07:52,913 INFO L226 Difference]: Without dead ends: 262 [2020-12-09 16:07:52,913 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 16:07:52,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-12-09 16:07:52,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2020-12-09 16:07:52,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-12-09 16:07:52,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 436 transitions. [2020-12-09 16:07:52,921 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 436 transitions. Word has length 78 [2020-12-09 16:07:52,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:52,921 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 436 transitions. [2020-12-09 16:07:52,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:07:52,921 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 436 transitions. [2020-12-09 16:07:52,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-09 16:07:52,922 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:52,922 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 16:07:52,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 16:07:52,922 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:52,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:52,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1176829110, now seen corresponding path program 1 times [2020-12-09 16:07:52,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:52,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145237338] [2020-12-09 16:07:52,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:52,956 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 16:07:52,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145237338] [2020-12-09 16:07:52,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:52,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:07:52,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070212335] [2020-12-09 16:07:52,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:07:52,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:52,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:07:52,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:07:52,957 INFO L87 Difference]: Start difference. First operand 260 states and 436 transitions. Second operand 3 states. [2020-12-09 16:07:53,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:53,068 INFO L93 Difference]: Finished difference Result 521 states and 873 transitions. [2020-12-09 16:07:53,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:07:53,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-09 16:07:53,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:53,069 INFO L225 Difference]: With dead ends: 521 [2020-12-09 16:07:53,070 INFO L226 Difference]: Without dead ends: 261 [2020-12-09 16:07:53,070 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 16:07:53,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-12-09 16:07:53,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 258. [2020-12-09 16:07:53,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-12-09 16:07:53,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 431 transitions. [2020-12-09 16:07:53,077 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 431 transitions. Word has length 78 [2020-12-09 16:07:53,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:53,077 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 431 transitions. [2020-12-09 16:07:53,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:07:53,078 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 431 transitions. [2020-12-09 16:07:53,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-09 16:07:53,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:53,078 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 16:07:53,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 16:07:53,079 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:53,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:53,079 INFO L82 PathProgramCache]: Analyzing trace with hash -2063219137, now seen corresponding path program 1 times [2020-12-09 16:07:53,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:53,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220591947] [2020-12-09 16:07:53,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:53,101 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 16:07:53,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220591947] [2020-12-09 16:07:53,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:53,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:07:53,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464392835] [2020-12-09 16:07:53,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:07:53,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:53,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:07:53,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:07:53,102 INFO L87 Difference]: Start difference. First operand 258 states and 431 transitions. Second operand 3 states. [2020-12-09 16:07:53,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:53,180 INFO L93 Difference]: Finished difference Result 521 states and 869 transitions. [2020-12-09 16:07:53,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:07:53,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-09 16:07:53,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:53,181 INFO L225 Difference]: With dead ends: 521 [2020-12-09 16:07:53,181 INFO L226 Difference]: Without dead ends: 265 [2020-12-09 16:07:53,182 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 16:07:53,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-12-09 16:07:53,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2020-12-09 16:07:53,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-12-09 16:07:53,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 434 transitions. [2020-12-09 16:07:53,189 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 434 transitions. Word has length 86 [2020-12-09 16:07:53,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:53,189 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 434 transitions. [2020-12-09 16:07:53,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:07:53,189 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 434 transitions. [2020-12-09 16:07:53,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-09 16:07:53,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:53,190 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 16:07:53,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 16:07:53,191 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:53,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:53,191 INFO L82 PathProgramCache]: Analyzing trace with hash 40573218, now seen corresponding path program 1 times [2020-12-09 16:07:53,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:53,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11707004] [2020-12-09 16:07:53,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:53,226 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 16:07:53,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11707004] [2020-12-09 16:07:53,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:53,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:07:53,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838112091] [2020-12-09 16:07:53,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:07:53,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:53,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:07:53,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:07:53,228 INFO L87 Difference]: Start difference. First operand 265 states and 434 transitions. Second operand 3 states. [2020-12-09 16:07:53,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:53,356 INFO L93 Difference]: Finished difference Result 557 states and 915 transitions. [2020-12-09 16:07:53,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:07:53,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-09 16:07:53,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:53,358 INFO L225 Difference]: With dead ends: 557 [2020-12-09 16:07:53,358 INFO L226 Difference]: Without dead ends: 294 [2020-12-09 16:07:53,359 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 16:07:53,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-12-09 16:07:53,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 292. [2020-12-09 16:07:53,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-12-09 16:07:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 477 transitions. [2020-12-09 16:07:53,371 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 477 transitions. Word has length 91 [2020-12-09 16:07:53,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:53,371 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 477 transitions. [2020-12-09 16:07:53,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:07:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 477 transitions. [2020-12-09 16:07:53,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-09 16:07:53,372 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:53,372 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 16:07:53,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 16:07:53,373 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:53,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:53,373 INFO L82 PathProgramCache]: Analyzing trace with hash -150412053, now seen corresponding path program 1 times [2020-12-09 16:07:53,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:53,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667598257] [2020-12-09 16:07:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:53,409 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 16:07:53,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667598257] [2020-12-09 16:07:53,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:53,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:07:53,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87817758] [2020-12-09 16:07:53,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:07:53,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:53,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:07:53,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:07:53,411 INFO L87 Difference]: Start difference. First operand 292 states and 477 transitions. Second operand 3 states. [2020-12-09 16:07:53,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:53,546 INFO L93 Difference]: Finished difference Result 614 states and 1007 transitions. [2020-12-09 16:07:53,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:07:53,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-09 16:07:53,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:53,548 INFO L225 Difference]: With dead ends: 614 [2020-12-09 16:07:53,548 INFO L226 Difference]: Without dead ends: 324 [2020-12-09 16:07:53,549 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 16:07:53,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-12-09 16:07:53,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 317. [2020-12-09 16:07:53,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-12-09 16:07:53,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 515 transitions. [2020-12-09 16:07:53,557 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 515 transitions. Word has length 92 [2020-12-09 16:07:53,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:53,558 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 515 transitions. [2020-12-09 16:07:53,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:07:53,558 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 515 transitions. [2020-12-09 16:07:53,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-09 16:07:53,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:53,559 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 16:07:53,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 16:07:53,559 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:53,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:53,559 INFO L82 PathProgramCache]: Analyzing trace with hash -76813937, now seen corresponding path program 1 times [2020-12-09 16:07:53,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:53,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753504200] [2020-12-09 16:07:53,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:53,583 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 16:07:53,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753504200] [2020-12-09 16:07:53,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:53,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:07:53,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193792123] [2020-12-09 16:07:53,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:07:53,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:53,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:07:53,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:07:53,585 INFO L87 Difference]: Start difference. First operand 317 states and 515 transitions. Second operand 3 states. [2020-12-09 16:07:53,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:53,710 INFO L93 Difference]: Finished difference Result 634 states and 1030 transitions. [2020-12-09 16:07:53,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:07:53,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-09 16:07:53,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:53,712 INFO L225 Difference]: With dead ends: 634 [2020-12-09 16:07:53,712 INFO L226 Difference]: Without dead ends: 319 [2020-12-09 16:07:53,712 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 16:07:53,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-12-09 16:07:53,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 317. [2020-12-09 16:07:53,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-12-09 16:07:53,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 511 transitions. [2020-12-09 16:07:53,721 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 511 transitions. Word has length 92 [2020-12-09 16:07:53,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:53,722 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 511 transitions. [2020-12-09 16:07:53,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:07:53,722 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 511 transitions. [2020-12-09 16:07:53,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-09 16:07:53,723 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:53,723 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 16:07:53,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 16:07:53,723 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:53,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:53,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1847214402, now seen corresponding path program 1 times [2020-12-09 16:07:53,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:53,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24442450] [2020-12-09 16:07:53,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:53,746 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 16:07:53,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24442450] [2020-12-09 16:07:53,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:53,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:07:53,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762383684] [2020-12-09 16:07:53,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:07:53,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:53,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:07:53,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:07:53,748 INFO L87 Difference]: Start difference. First operand 317 states and 511 transitions. Second operand 3 states. [2020-12-09 16:07:53,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:53,856 INFO L93 Difference]: Finished difference Result 639 states and 1032 transitions. [2020-12-09 16:07:53,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:07:53,857 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-09 16:07:53,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:53,859 INFO L225 Difference]: With dead ends: 639 [2020-12-09 16:07:53,859 INFO L226 Difference]: Without dead ends: 324 [2020-12-09 16:07:53,860 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 16:07:53,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-12-09 16:07:53,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 317. [2020-12-09 16:07:53,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-12-09 16:07:53,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 506 transitions. [2020-12-09 16:07:53,873 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 506 transitions. Word has length 93 [2020-12-09 16:07:53,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:53,874 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 506 transitions. [2020-12-09 16:07:53,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:07:53,874 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 506 transitions. [2020-12-09 16:07:53,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-09 16:07:53,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:53,875 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 16:07:53,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 16:07:53,875 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:53,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:53,876 INFO L82 PathProgramCache]: Analyzing trace with hash 852148414, now seen corresponding path program 1 times [2020-12-09 16:07:53,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:53,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166853432] [2020-12-09 16:07:53,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:53,904 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 16:07:53,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166853432] [2020-12-09 16:07:53,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:53,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:07:53,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134364959] [2020-12-09 16:07:53,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:07:53,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:53,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:07:53,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:07:53,906 INFO L87 Difference]: Start difference. First operand 317 states and 506 transitions. Second operand 3 states. [2020-12-09 16:07:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:54,012 INFO L93 Difference]: Finished difference Result 653 states and 1043 transitions. [2020-12-09 16:07:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:07:54,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-09 16:07:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:54,014 INFO L225 Difference]: With dead ends: 653 [2020-12-09 16:07:54,014 INFO L226 Difference]: Without dead ends: 338 [2020-12-09 16:07:54,015 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 16:07:54,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-12-09 16:07:54,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 336. [2020-12-09 16:07:54,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-12-09 16:07:54,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 531 transitions. [2020-12-09 16:07:54,025 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 531 transitions. Word has length 94 [2020-12-09 16:07:54,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:54,025 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 531 transitions. [2020-12-09 16:07:54,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:07:54,025 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 531 transitions. [2020-12-09 16:07:54,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-09 16:07:54,026 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:54,026 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 16:07:54,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 16:07:54,026 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:54,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:54,027 INFO L82 PathProgramCache]: Analyzing trace with hash 334323633, now seen corresponding path program 1 times [2020-12-09 16:07:54,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:54,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818715375] [2020-12-09 16:07:54,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:54,048 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 16:07:54,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818715375] [2020-12-09 16:07:54,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:54,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:07:54,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089345252] [2020-12-09 16:07:54,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:07:54,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:54,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:07:54,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:07:54,049 INFO L87 Difference]: Start difference. First operand 336 states and 531 transitions. Second operand 3 states. [2020-12-09 16:07:54,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:54,154 INFO L93 Difference]: Finished difference Result 672 states and 1062 transitions. [2020-12-09 16:07:54,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:07:54,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-09 16:07:54,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:54,156 INFO L225 Difference]: With dead ends: 672 [2020-12-09 16:07:54,156 INFO L226 Difference]: Without dead ends: 338 [2020-12-09 16:07:54,157 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 16:07:54,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-12-09 16:07:54,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 336. [2020-12-09 16:07:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-12-09 16:07:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 525 transitions. [2020-12-09 16:07:54,167 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 525 transitions. Word has length 95 [2020-12-09 16:07:54,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:54,167 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 525 transitions. [2020-12-09 16:07:54,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:07:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 525 transitions. [2020-12-09 16:07:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-09 16:07:54,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:54,168 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 16:07:54,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 16:07:54,168 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:54,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:54,169 INFO L82 PathProgramCache]: Analyzing trace with hash -409941353, now seen corresponding path program 1 times [2020-12-09 16:07:54,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:54,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921166130] [2020-12-09 16:07:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:54,215 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 16:07:54,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921166130] [2020-12-09 16:07:54,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551287732] [2020-12-09 16:07:54,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/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 16:07:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:54,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 16:07:54,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:07:54,458 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 16:07:54,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:07:54,560 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 16:07:54,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 16:07:54,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 6 [2020-12-09 16:07:54,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829405443] [2020-12-09 16:07:54,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:07:54,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:54,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:07:54,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 16:07:54,562 INFO L87 Difference]: Start difference. First operand 336 states and 525 transitions. Second operand 3 states. [2020-12-09 16:07:54,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:54,589 INFO L93 Difference]: Finished difference Result 669 states and 1047 transitions. [2020-12-09 16:07:54,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:07:54,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-09 16:07:54,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:54,592 INFO L225 Difference]: With dead ends: 669 [2020-12-09 16:07:54,592 INFO L226 Difference]: Without dead ends: 667 [2020-12-09 16:07:54,593 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 16:07:54,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2020-12-09 16:07:54,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 664. [2020-12-09 16:07:54,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-12-09 16:07:54,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1041 transitions. [2020-12-09 16:07:54,613 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1041 transitions. Word has length 108 [2020-12-09 16:07:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:54,613 INFO L481 AbstractCegarLoop]: Abstraction has 664 states and 1041 transitions. [2020-12-09 16:07:54,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:07:54,614 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1041 transitions. [2020-12-09 16:07:54,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-09 16:07:54,615 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:54,615 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 16:07:54,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-09 16:07:54,816 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:54,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:54,817 INFO L82 PathProgramCache]: Analyzing trace with hash -965800924, now seen corresponding path program 1 times [2020-12-09 16:07:54,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:54,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408974923] [2020-12-09 16:07:54,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:54,827 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:07:54,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936224470] [2020-12-09 16:07:54,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/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 16:07:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:55,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 16:07:55,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:07:55,097 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 16:07:55,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:07:55,168 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 16:07:55,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408974923] [2020-12-09 16:07:55,168 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:07:55,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936224470] [2020-12-09 16:07:55,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:55,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-12-09 16:07:55,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216969438] [2020-12-09 16:07:55,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 16:07:55,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:55,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 16:07:55,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 16:07:55,170 INFO L87 Difference]: Start difference. First operand 664 states and 1041 transitions. Second operand 4 states. [2020-12-09 16:07:55,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:55,362 INFO L93 Difference]: Finished difference Result 1490 states and 2332 transitions. [2020-12-09 16:07:55,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 16:07:55,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-12-09 16:07:55,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:55,366 INFO L225 Difference]: With dead ends: 1490 [2020-12-09 16:07:55,366 INFO L226 Difference]: Without dead ends: 786 [2020-12-09 16:07:55,367 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 16:07:55,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-12-09 16:07:55,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 766. [2020-12-09 16:07:55,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2020-12-09 16:07:55,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1153 transitions. [2020-12-09 16:07:55,389 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1153 transitions. Word has length 111 [2020-12-09 16:07:55,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:55,389 INFO L481 AbstractCegarLoop]: Abstraction has 766 states and 1153 transitions. [2020-12-09 16:07:55,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 16:07:55,390 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1153 transitions. [2020-12-09 16:07:55,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-09 16:07:55,391 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:55,391 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 16:07:55,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-09 16:07:55,592 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:55,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:55,592 INFO L82 PathProgramCache]: Analyzing trace with hash -926995623, now seen corresponding path program 1 times [2020-12-09 16:07:55,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:55,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437847243] [2020-12-09 16:07:55,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:55,601 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:07:55,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257000996] [2020-12-09 16:07:55,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/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 16:07:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:55,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 16:07:55,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:07:55,774 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 16:07:55,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:07:55,862 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 16:07:55,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437847243] [2020-12-09 16:07:55,862 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:07:55,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257000996] [2020-12-09 16:07:55,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:55,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-09 16:07:55,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081947894] [2020-12-09 16:07:55,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 16:07:55,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:55,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 16:07:55,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:07:55,864 INFO L87 Difference]: Start difference. First operand 766 states and 1153 transitions. Second operand 6 states. [2020-12-09 16:07:56,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:56,092 INFO L93 Difference]: Finished difference Result 1598 states and 2399 transitions. [2020-12-09 16:07:56,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 16:07:56,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-12-09 16:07:56,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:56,096 INFO L225 Difference]: With dead ends: 1598 [2020-12-09 16:07:56,096 INFO L226 Difference]: Without dead ends: 834 [2020-12-09 16:07:56,097 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 16:07:56,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-12-09 16:07:56,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 803. [2020-12-09 16:07:56,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-12-09 16:07:56,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1141 transitions. [2020-12-09 16:07:56,118 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1141 transitions. Word has length 142 [2020-12-09 16:07:56,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:56,119 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1141 transitions. [2020-12-09 16:07:56,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 16:07:56,119 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1141 transitions. [2020-12-09 16:07:56,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-09 16:07:56,120 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:56,120 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 16:07:56,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-09 16:07:56,321 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:56,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:56,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1679265685, now seen corresponding path program 1 times [2020-12-09 16:07:56,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:56,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627501465] [2020-12-09 16:07:56,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:56,355 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 16:07:56,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627501465] [2020-12-09 16:07:56,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:56,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:07:56,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279508436] [2020-12-09 16:07:56,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:07:56,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:56,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:07:56,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:07:56,357 INFO L87 Difference]: Start difference. First operand 803 states and 1141 transitions. Second operand 3 states. [2020-12-09 16:07:56,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:56,459 INFO L93 Difference]: Finished difference Result 1608 states and 2284 transitions. [2020-12-09 16:07:56,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:07:56,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-12-09 16:07:56,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:56,463 INFO L225 Difference]: With dead ends: 1608 [2020-12-09 16:07:56,463 INFO L226 Difference]: Without dead ends: 807 [2020-12-09 16:07:56,464 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 16:07:56,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2020-12-09 16:07:56,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 803. [2020-12-09 16:07:56,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-12-09 16:07:56,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1127 transitions. [2020-12-09 16:07:56,484 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1127 transitions. Word has length 157 [2020-12-09 16:07:56,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:56,484 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1127 transitions. [2020-12-09 16:07:56,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:07:56,484 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1127 transitions. [2020-12-09 16:07:56,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-12-09 16:07:56,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:56,486 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 16:07:56,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-09 16:07:56,487 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:56,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:56,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1899556921, now seen corresponding path program 1 times [2020-12-09 16:07:56,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:56,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042770580] [2020-12-09 16:07:56,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:56,495 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:07:56,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238430925] [2020-12-09 16:07:56,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/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 16:07:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:56,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 16:07:56,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:07:56,672 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 16:07:56,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:07:56,751 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 16:07:56,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042770580] [2020-12-09 16:07:56,752 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:07:56,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238430925] [2020-12-09 16:07:56,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:56,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-09 16:07:56,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151176905] [2020-12-09 16:07:56,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 16:07:56,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:56,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 16:07:56,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 16:07:56,753 INFO L87 Difference]: Start difference. First operand 803 states and 1127 transitions. Second operand 4 states. [2020-12-09 16:07:56,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:56,900 INFO L93 Difference]: Finished difference Result 1241 states and 1741 transitions. [2020-12-09 16:07:56,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 16:07:56,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2020-12-09 16:07:56,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:56,904 INFO L225 Difference]: With dead ends: 1241 [2020-12-09 16:07:56,904 INFO L226 Difference]: Without dead ends: 819 [2020-12-09 16:07:56,905 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 16:07:56,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-12-09 16:07:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 803. [2020-12-09 16:07:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-12-09 16:07:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1125 transitions. [2020-12-09 16:07:56,930 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1125 transitions. Word has length 181 [2020-12-09 16:07:56,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:56,931 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1125 transitions. [2020-12-09 16:07:56,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 16:07:56,931 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1125 transitions. [2020-12-09 16:07:56,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-12-09 16:07:56,933 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:56,933 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 16:07:57,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:07:57,134 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:57,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:57,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1527149226, now seen corresponding path program 1 times [2020-12-09 16:07:57,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:57,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385369502] [2020-12-09 16:07:57,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:57,147 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:07:57,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409178404] [2020-12-09 16:07:57,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/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 16:07:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:57,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 16:07:57,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:07:57,322 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 16:07:57,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:07:57,421 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 16:07:57,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385369502] [2020-12-09 16:07:57,422 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:07:57,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409178404] [2020-12-09 16:07:57,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:57,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-12-09 16:07:57,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326009455] [2020-12-09 16:07:57,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:07:57,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:57,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:07:57,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:07:57,423 INFO L87 Difference]: Start difference. First operand 803 states and 1125 transitions. Second operand 3 states. [2020-12-09 16:07:57,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:57,509 INFO L93 Difference]: Finished difference Result 1670 states and 2350 transitions. [2020-12-09 16:07:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:07:57,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2020-12-09 16:07:57,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:57,512 INFO L225 Difference]: With dead ends: 1670 [2020-12-09 16:07:57,512 INFO L226 Difference]: Without dead ends: 869 [2020-12-09 16:07:57,513 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 16:07:57,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2020-12-09 16:07:57,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 849. [2020-12-09 16:07:57,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-12-09 16:07:57,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1177 transitions. [2020-12-09 16:07:57,534 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1177 transitions. Word has length 193 [2020-12-09 16:07:57,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:57,534 INFO L481 AbstractCegarLoop]: Abstraction has 849 states and 1177 transitions. [2020-12-09 16:07:57,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:07:57,534 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1177 transitions. [2020-12-09 16:07:57,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-12-09 16:07:57,536 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:57,536 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 16:07:57,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:07:57,737 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:57,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:57,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1814982718, now seen corresponding path program 1 times [2020-12-09 16:07:57,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:57,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621677596] [2020-12-09 16:07:57,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:57,903 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 16:07:57,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621677596] [2020-12-09 16:07:57,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:07:57,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:07:57,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3505973] [2020-12-09 16:07:57,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:07:57,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:07:57,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:07:57,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:07:57,905 INFO L87 Difference]: Start difference. First operand 849 states and 1177 transitions. Second operand 3 states. [2020-12-09 16:07:57,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:07:57,998 INFO L93 Difference]: Finished difference Result 1710 states and 2376 transitions. [2020-12-09 16:07:57,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:07:57,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-12-09 16:07:57,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:07:58,002 INFO L225 Difference]: With dead ends: 1710 [2020-12-09 16:07:58,002 INFO L226 Difference]: Without dead ends: 863 [2020-12-09 16:07:58,003 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 16:07:58,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-12-09 16:07:58,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 849. [2020-12-09 16:07:58,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-12-09 16:07:58,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1155 transitions. [2020-12-09 16:07:58,024 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1155 transitions. Word has length 217 [2020-12-09 16:07:58,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:07:58,024 INFO L481 AbstractCegarLoop]: Abstraction has 849 states and 1155 transitions. [2020-12-09 16:07:58,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:07:58,024 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1155 transitions. [2020-12-09 16:07:58,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-12-09 16:07:58,026 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:07:58,026 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 16:07:58,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-09 16:07:58,026 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:07:58,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:07:58,027 INFO L82 PathProgramCache]: Analyzing trace with hash 182896283, now seen corresponding path program 1 times [2020-12-09 16:07:58,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:07:58,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495929165] [2020-12-09 16:07:58,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:07:58,037 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:07:58,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [778107803] [2020-12-09 16:07:58,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/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 16:07:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:07:58,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 16:07:58,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:07:58,218 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 16:07:58,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:07:58,321 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 16:07:58,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495929165] [2020-12-09 16:07:58,321 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:07:58,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778107803] [2020-12-09 16:07:58,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2074163044] [2020-12-09 16:07:58,338 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2020-12-09 16:07:58,339 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:07:58,342 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:07:58,346 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:07:58,346 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:08:01,391 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 16:08:01,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 16:08:01,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-09 16:08:01,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986916850] [2020-12-09 16:08:01,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 16:08:01,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:08:01,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 16:08:01,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:08:01,393 INFO L87 Difference]: Start difference. First operand 849 states and 1155 transitions. Second operand 6 states. [2020-12-09 16:08:01,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:08:01,723 INFO L93 Difference]: Finished difference Result 2691 states and 3673 transitions. [2020-12-09 16:08:01,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 16:08:01,724 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 238 [2020-12-09 16:08:01,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:08:01,732 INFO L225 Difference]: With dead ends: 2691 [2020-12-09 16:08:01,732 INFO L226 Difference]: Without dead ends: 1802 [2020-12-09 16:08:01,734 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 16:08:01,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2020-12-09 16:08:01,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1031. [2020-12-09 16:08:01,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-12-09 16:08:01,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1421 transitions. [2020-12-09 16:08:01,770 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1421 transitions. Word has length 238 [2020-12-09 16:08:01,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:08:01,771 INFO L481 AbstractCegarLoop]: Abstraction has 1031 states and 1421 transitions. [2020-12-09 16:08:01,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 16:08:01,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1421 transitions. [2020-12-09 16:08:01,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-12-09 16:08:01,772 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:08:01,773 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 16:08:01,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:08:01,973 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:08:01,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:08:01,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1413053441, now seen corresponding path program 1 times [2020-12-09 16:08:01,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:08:01,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350022493] [2020-12-09 16:08:01,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:08:01,985 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:08:01,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379667550] [2020-12-09 16:08:01,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/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 16:08:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:08:02,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 16:08:02,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:08:02,232 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 16:08:02,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:08:02,364 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 16:08:02,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350022493] [2020-12-09 16:08:02,364 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:08:02,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379667550] [2020-12-09 16:08:02,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1170198896] [2020-12-09 16:08:02,367 INFO L159 IcfgInterpreter]: Started Sifa with 55 locations of interest [2020-12-09 16:08:02,367 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:08:02,367 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:08:02,367 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:08:02,367 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:08:04,419 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 16:08:04,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 16:08:04,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-12-09 16:08:04,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778614691] [2020-12-09 16:08:04,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 16:08:04,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:08:04,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 16:08:04,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 16:08:04,420 INFO L87 Difference]: Start difference. First operand 1031 states and 1421 transitions. Second operand 7 states. [2020-12-09 16:08:04,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:08:04,808 INFO L93 Difference]: Finished difference Result 3027 states and 4168 transitions. [2020-12-09 16:08:04,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 16:08:04,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-12-09 16:08:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:08:04,813 INFO L225 Difference]: With dead ends: 3027 [2020-12-09 16:08:04,813 INFO L226 Difference]: Without dead ends: 1387 [2020-12-09 16:08:04,814 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 16:08:04,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2020-12-09 16:08:04,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1316. [2020-12-09 16:08:04,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1316 states. [2020-12-09 16:08:04,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1788 transitions. [2020-12-09 16:08:04,873 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1788 transitions. Word has length 246 [2020-12-09 16:08:04,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:08:04,874 INFO L481 AbstractCegarLoop]: Abstraction has 1316 states and 1788 transitions. [2020-12-09 16:08:04,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 16:08:04,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1788 transitions. [2020-12-09 16:08:04,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-12-09 16:08:04,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:08:04,875 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 16:08:05,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:08:05,077 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:08:05,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:08:05,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1724215462, now seen corresponding path program 1 times [2020-12-09 16:08:05,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:08:05,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680619323] [2020-12-09 16:08:05,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:08:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:08:05,167 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 16:08:05,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680619323] [2020-12-09 16:08:05,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:08:05,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:08:05,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10263407] [2020-12-09 16:08:05,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:08:05,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:08:05,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:08:05,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:08:05,169 INFO L87 Difference]: Start difference. First operand 1316 states and 1788 transitions. Second operand 3 states. [2020-12-09 16:08:05,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:08:05,263 INFO L93 Difference]: Finished difference Result 2636 states and 3580 transitions. [2020-12-09 16:08:05,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:08:05,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 269 [2020-12-09 16:08:05,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:08:05,268 INFO L225 Difference]: With dead ends: 2636 [2020-12-09 16:08:05,268 INFO L226 Difference]: Without dead ends: 1322 [2020-12-09 16:08:05,269 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 16:08:05,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2020-12-09 16:08:05,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1316. [2020-12-09 16:08:05,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1316 states. [2020-12-09 16:08:05,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1758 transitions. [2020-12-09 16:08:05,301 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1758 transitions. Word has length 269 [2020-12-09 16:08:05,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:08:05,301 INFO L481 AbstractCegarLoop]: Abstraction has 1316 states and 1758 transitions. [2020-12-09 16:08:05,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:08:05,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1758 transitions. [2020-12-09 16:08:05,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-12-09 16:08:05,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:08:05,303 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 16:08:05,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2020-12-09 16:08:05,303 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:08:05,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:08:05,304 INFO L82 PathProgramCache]: Analyzing trace with hash 226486388, now seen corresponding path program 1 times [2020-12-09 16:08:05,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:08:05,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497443306] [2020-12-09 16:08:05,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:08:05,315 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:08:05,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401661473] [2020-12-09 16:08:05,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/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 16:08:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:08:05,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 16:08:05,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:08:05,525 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 16:08:05,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:08:05,643 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 16:08:05,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497443306] [2020-12-09 16:08:05,643 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:08:05,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401661473] [2020-12-09 16:08:05,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:08:05,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-12-09 16:08:05,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103255673] [2020-12-09 16:08:05,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:08:05,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:08:05,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:08:05,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:08:05,645 INFO L87 Difference]: Start difference. First operand 1316 states and 1758 transitions. Second operand 3 states. [2020-12-09 16:08:05,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:08:05,749 INFO L93 Difference]: Finished difference Result 2732 states and 3661 transitions. [2020-12-09 16:08:05,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:08:05,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 300 [2020-12-09 16:08:05,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:08:05,754 INFO L225 Difference]: With dead ends: 2732 [2020-12-09 16:08:05,754 INFO L226 Difference]: Without dead ends: 1418 [2020-12-09 16:08:05,755 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 16:08:05,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2020-12-09 16:08:05,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1412. [2020-12-09 16:08:05,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2020-12-09 16:08:05,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1863 transitions. [2020-12-09 16:08:05,792 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1863 transitions. Word has length 300 [2020-12-09 16:08:05,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:08:05,792 INFO L481 AbstractCegarLoop]: Abstraction has 1412 states and 1863 transitions. [2020-12-09 16:08:05,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:08:05,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1863 transitions. [2020-12-09 16:08:05,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-12-09 16:08:05,794 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:08:05,795 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 16:08:05,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable301 [2020-12-09 16:08:05,996 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:08:05,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:08:05,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1396844701, now seen corresponding path program 1 times [2020-12-09 16:08:05,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:08:05,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879268019] [2020-12-09 16:08:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:08:06,036 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:08:06,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059647748] [2020-12-09 16:08:06,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/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 16:08:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:08:06,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 16:08:06,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:08:06,298 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 16:08:06,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:08:06,767 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 16:08:06,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879268019] [2020-12-09 16:08:06,767 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:08:06,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059647748] [2020-12-09 16:08:06,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [256053791] [2020-12-09 16:08:06,770 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2020-12-09 16:08:06,770 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:08:06,770 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:08:06,770 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:08:06,770 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:08:13,994 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 16:08:13,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 16:08:13,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 7 [2020-12-09 16:08:13,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032107082] [2020-12-09 16:08:13,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 16:08:13,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:08:13,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 16:08:13,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-09 16:08:13,996 INFO L87 Difference]: Start difference. First operand 1412 states and 1863 transitions. Second operand 8 states. [2020-12-09 16:08:14,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:08:14,085 INFO L93 Difference]: Finished difference Result 2892 states and 3805 transitions. [2020-12-09 16:08:14,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 16:08:14,085 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 330 [2020-12-09 16:08:14,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:08:14,093 INFO L225 Difference]: With dead ends: 2892 [2020-12-09 16:08:14,093 INFO L226 Difference]: Without dead ends: 2381 [2020-12-09 16:08:14,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 650 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-09 16:08:14,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-12-09 16:08:14,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 1962. [2020-12-09 16:08:14,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1962 states. [2020-12-09 16:08:14,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2603 transitions. [2020-12-09 16:08:14,142 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2603 transitions. Word has length 330 [2020-12-09 16:08:14,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:08:14,142 INFO L481 AbstractCegarLoop]: Abstraction has 1962 states and 2603 transitions. [2020-12-09 16:08:14,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 16:08:14,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2603 transitions. [2020-12-09 16:08:14,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-12-09 16:08:14,145 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:08:14,145 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 16:08:14,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:08:14,346 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:08:14,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:08:14,346 INFO L82 PathProgramCache]: Analyzing trace with hash -223723061, now seen corresponding path program 1 times [2020-12-09 16:08:14,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:08:14,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010870710] [2020-12-09 16:08:14,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:08:14,360 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:08:14,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940668078] [2020-12-09 16:08:14,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/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 16:08:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:08:14,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 16:08:14,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:08:14,751 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 16:08:14,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:08:15,025 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 16:08:15,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010870710] [2020-12-09 16:08:15,025 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:08:15,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940668078] [2020-12-09 16:08:15,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1648514863] [2020-12-09 16:08:15,028 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2020-12-09 16:08:15,028 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:08:15,028 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:08:15,028 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:08:15,029 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:08:22,153 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 16:08:22,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 16:08:22,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-09 16:08:22,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934074989] [2020-12-09 16:08:22,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 16:08:22,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:08:22,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 16:08:22,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-09 16:08:22,156 INFO L87 Difference]: Start difference. First operand 1962 states and 2603 transitions. Second operand 9 states. [2020-12-09 16:08:22,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:08:22,852 INFO L93 Difference]: Finished difference Result 4393 states and 5757 transitions. [2020-12-09 16:08:22,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-09 16:08:22,852 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 468 [2020-12-09 16:08:22,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:08:22,860 INFO L225 Difference]: With dead ends: 4393 [2020-12-09 16:08:22,860 INFO L226 Difference]: Without dead ends: 2142 [2020-12-09 16:08:22,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 956 GetRequests, 937 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-12-09 16:08:22,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-12-09 16:08:22,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 1418. [2020-12-09 16:08:22,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1418 states. [2020-12-09 16:08:22,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 1827 transitions. [2020-12-09 16:08:22,906 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 1827 transitions. Word has length 468 [2020-12-09 16:08:22,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:08:22,906 INFO L481 AbstractCegarLoop]: Abstraction has 1418 states and 1827 transitions. [2020-12-09 16:08:22,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 16:08:22,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 1827 transitions. [2020-12-09 16:08:22,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2020-12-09 16:08:22,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:08:22,910 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 16:08:23,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable562 [2020-12-09 16:08:23,111 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:08:23,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:08:23,113 INFO L82 PathProgramCache]: Analyzing trace with hash 579009560, now seen corresponding path program 1 times [2020-12-09 16:08:23,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:08:23,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895384002] [2020-12-09 16:08:23,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:08:23,154 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:08:23,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257730426] [2020-12-09 16:08:23,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/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 16:08:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:08:23,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 16:08:23,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:08:23,585 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 16:08:23,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:08:23,919 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 16:08:23,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895384002] [2020-12-09 16:08:23,919 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:08:23,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257730426] [2020-12-09 16:08:23,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:08:23,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-09 16:08:23,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441627532] [2020-12-09 16:08:23,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 16:08:23,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:08:23,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 16:08:23,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 16:08:23,921 INFO L87 Difference]: Start difference. First operand 1418 states and 1827 transitions. Second operand 4 states. [2020-12-09 16:08:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:08:24,025 INFO L93 Difference]: Finished difference Result 2837 states and 3655 transitions. [2020-12-09 16:08:24,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:08:24,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 632 [2020-12-09 16:08:24,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:08:24,030 INFO L225 Difference]: With dead ends: 2837 [2020-12-09 16:08:24,030 INFO L226 Difference]: Without dead ends: 1421 [2020-12-09 16:08:24,031 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 16:08:24,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2020-12-09 16:08:24,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1418. [2020-12-09 16:08:24,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1418 states. [2020-12-09 16:08:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 1817 transitions. [2020-12-09 16:08:24,072 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 1817 transitions. Word has length 632 [2020-12-09 16:08:24,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:08:24,073 INFO L481 AbstractCegarLoop]: Abstraction has 1418 states and 1817 transitions. [2020-12-09 16:08:24,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 16:08:24,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 1817 transitions. [2020-12-09 16:08:24,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2020-12-09 16:08:24,076 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:08:24,076 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 16:08:24,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable822 [2020-12-09 16:08:24,277 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:08:24,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:08:24,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1917501082, now seen corresponding path program 2 times [2020-12-09 16:08:24,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:08:24,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146249596] [2020-12-09 16:08:24,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:08:24,289 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:08:24,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1532159263] [2020-12-09 16:08:24,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/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 16:08:24,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-12-09 16:08:24,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 16:08:24,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 16:08:24,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:08:24,763 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 16:08:24,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:08:25,121 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 16:08:25,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146249596] [2020-12-09 16:08:25,122 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:08:25,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532159263] [2020-12-09 16:08:25,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:08:25,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-09 16:08:25,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394171128] [2020-12-09 16:08:25,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 16:08:25,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:08:25,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 16:08:25,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 16:08:25,123 INFO L87 Difference]: Start difference. First operand 1418 states and 1817 transitions. Second operand 4 states. [2020-12-09 16:08:25,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:08:25,241 INFO L93 Difference]: Finished difference Result 2882 states and 3695 transitions. [2020-12-09 16:08:25,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:08:25,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 660 [2020-12-09 16:08:25,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:08:25,246 INFO L225 Difference]: With dead ends: 2882 [2020-12-09 16:08:25,247 INFO L226 Difference]: Without dead ends: 1454 [2020-12-09 16:08:25,248 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 16:08:25,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2020-12-09 16:08:25,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1454. [2020-12-09 16:08:25,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-12-09 16:08:25,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1862 transitions. [2020-12-09 16:08:25,294 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1862 transitions. Word has length 660 [2020-12-09 16:08:25,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:08:25,295 INFO L481 AbstractCegarLoop]: Abstraction has 1454 states and 1862 transitions. [2020-12-09 16:08:25,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 16:08:25,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1862 transitions. [2020-12-09 16:08:25,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2020-12-09 16:08:25,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:08:25,299 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 16:08:25,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable823,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:08:25,500 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:08:25,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:08:25,501 INFO L82 PathProgramCache]: Analyzing trace with hash -652176759, now seen corresponding path program 1 times [2020-12-09 16:08:25,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:08:25,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094448172] [2020-12-09 16:08:25,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:08:25,547 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:08:25,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308848514] [2020-12-09 16:08:25,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/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 16:08:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:08:25,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 16:08:25,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:08:26,010 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 16:08:26,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:08:26,346 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 16:08:26,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094448172] [2020-12-09 16:08:26,346 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:08:26,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308848514] [2020-12-09 16:08:26,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:08:26,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-09 16:08:26,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622671506] [2020-12-09 16:08:26,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 16:08:26,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:08:26,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 16:08:26,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 16:08:26,348 INFO L87 Difference]: Start difference. First operand 1454 states and 1862 transitions. Second operand 4 states. [2020-12-09 16:08:26,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:08:26,450 INFO L93 Difference]: Finished difference Result 1932 states and 2479 transitions. [2020-12-09 16:08:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 16:08:26,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 672 [2020-12-09 16:08:26,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:08:26,451 INFO L225 Difference]: With dead ends: 1932 [2020-12-09 16:08:26,451 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 16:08:26,453 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 16:08:26,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 16:08:26,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 16:08:26,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 16:08:26,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 16:08:26,453 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 672 [2020-12-09 16:08:26,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:08:26,453 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 16:08:26,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 16:08:26,453 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 16:08:26,453 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 16:08:26,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable824 [2020-12-09 16:08:26,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 16:08:26,872 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 153 [2020-12-09 16:08:27,044 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 153 [2020-12-09 16:08:27,195 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 159 [2020-12-09 16:08:27,406 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 153 [2020-12-09 16:08:27,822 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2020-12-09 16:08:28,269 WARN L197 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 89 [2020-12-09 16:08:28,375 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 29 [2020-12-09 16:08:28,548 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2020-12-09 16:08:28,661 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 39 [2020-12-09 16:08:29,222 WARN L197 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 89 [2020-12-09 16:08:29,400 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 48 [2020-12-09 16:08:30,039 WARN L197 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 93 [2020-12-09 16:08:30,782 WARN L197 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 57 [2020-12-09 16:08:30,893 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2020-12-09 16:08:31,304 WARN L197 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 89 [2020-12-09 16:08:31,406 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2020-12-09 16:08:31,497 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 16:08:31,497 INFO L258 CegarLoopResult]: At program point L168(lines 167 605) 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 16:08:31,497 INFO L258 CegarLoopResult]: At program point L135(lines 128 618) 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 16:08:31,497 INFO L262 CegarLoopResult]: For program point L631(lines 631 635) no Hoare annotation was computed. [2020-12-09 16:08:31,497 INFO L262 CegarLoopResult]: For program point L367(lines 367 371) no Hoare annotation was computed. [2020-12-09 16:08:31,497 INFO L262 CegarLoopResult]: For program point L401(lines 401 407) no Hoare annotation was computed. [2020-12-09 16:08:31,497 INFO L258 CegarLoopResult]: At program point L203(lines 203 593) 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 16:08:31,497 INFO L262 CegarLoopResult]: For program point L170(lines 170 604) no Hoare annotation was computed. [2020-12-09 16:08:31,497 INFO L262 CegarLoopResult]: For program point L137(lines 137 615) no Hoare annotation was computed. [2020-12-09 16:08:31,498 INFO L258 CegarLoopResult]: At program point L104(lines 104 626) the Hoare annotation is: (let ((.cse11 (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (let ((.cse10 (= 8640 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse6 (not .cse11))) (let ((.cse5 (or (and (= 3 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse11) (and .cse10 .cse6))) (.cse1 (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse3 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse8 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse0 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse7 (= 3 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8672)) (.cse4 (or (not .cse10) .cse6))) (or (and (= ULTIMATE.start_ssl3_accept_~s__state~0 8544) .cse0) (and .cse1 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 1)) (and (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480)) .cse2 .cse3 (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)) .cse0 .cse4) (and .cse5 (= ULTIMATE.start_ssl3_accept_~s__state~0 8640) .cse6) (and (= ULTIMATE.start_ssl3_accept_~s__state~0 8512) .cse0) (and (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse6) (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 8576) (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576) .cse0) (and (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0) .cse0) (and .cse7 .cse5 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8448) .cse8) (and .cse1 .cse0) (and (let ((.cse9 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8464))) (or (and (= ULTIMATE.start_ssl3_accept_~blastFlag~0 0) .cse3 .cse9) (and .cse3 .cse9 .cse0))) .cse8) (= ULTIMATE.start_ssl3_accept_~s__state~0 3) (and (= ULTIMATE.start_ssl3_accept_~s__state~0 8528) .cse0) (and .cse7 .cse2 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~0) .cse4))))) [2020-12-09 16:08:31,498 INFO L262 CegarLoopResult]: For program point L468(lines 468 472) no Hoare annotation was computed. [2020-12-09 16:08:31,498 INFO L258 CegarLoopResult]: At program point L204(lines 200 594) the Hoare annotation is: (let ((.cse0 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~0))) (or (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))) (and (= 3 ULTIMATE.start_ssl3_accept_~blastFlag~0) (<= ULTIMATE.start_ssl3_accept_~s__state~0 8672) .cse0 (not (= 8640 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0))))) [2020-12-09 16:08:31,498 INFO L262 CegarLoopResult]: For program point L502-2(lines 211 588) no Hoare annotation was computed. [2020-12-09 16:08:31,498 INFO L262 CegarLoopResult]: For program point L239(lines 239 244) no Hoare annotation was computed. [2020-12-09 16:08:31,498 INFO L262 CegarLoopResult]: For program point L173(lines 173 603) no Hoare annotation was computed. [2020-12-09 16:08:31,498 INFO L262 CegarLoopResult]: For program point L140(lines 140 614) no Hoare annotation was computed. [2020-12-09 16:08:31,498 INFO L262 CegarLoopResult]: For program point L107(lines 107 625) no Hoare annotation was computed. [2020-12-09 16:08:31,498 INFO L258 CegarLoopResult]: At program point L174(lines 170 604) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse3 (< ULTIMATE.start_ssl3_accept_~s__state~0 8640)) (.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))) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse5 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse9 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (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))) (and .cse0 .cse2 .cse3 .cse6 .cse7 .cse8 (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) .cse1 .cse4 .cse5 .cse9))) [2020-12-09 16:08:31,498 INFO L258 CegarLoopResult]: At program point L141(lines 137 615) 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 16:08:31,498 INFO L262 CegarLoopResult]: For program point L274(lines 274 278) no Hoare annotation was computed. [2020-12-09 16:08:31,498 INFO L262 CegarLoopResult]: For program point L308-2(lines 211 588) no Hoare annotation was computed. [2020-12-09 16:08:31,498 INFO L262 CegarLoopResult]: For program point L176(lines 176 602) no Hoare annotation was computed. [2020-12-09 16:08:31,498 INFO L262 CegarLoopResult]: For program point L143(lines 143 613) no Hoare annotation was computed. [2020-12-09 16:08:31,498 INFO L262 CegarLoopResult]: For program point L110(lines 110 624) no Hoare annotation was computed. [2020-12-09 16:08:31,499 INFO L262 CegarLoopResult]: For program point L441-1(lines 441 453) no Hoare annotation was computed. [2020-12-09 16:08:31,499 INFO L265 CegarLoopResult]: At program point L673(lines 66 675) the Hoare annotation is: true [2020-12-09 16:08:31,499 INFO L262 CegarLoopResult]: For program point L541(lines 541 546) no Hoare annotation was computed. [2020-12-09 16:08:31,499 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 16:08:31,499 INFO L262 CegarLoopResult]: For program point L343-2(lines 211 588) no Hoare annotation was computed. [2020-12-09 16:08:31,499 INFO L262 CegarLoopResult]: For program point L179(lines 179 601) no Hoare annotation was computed. [2020-12-09 16:08:31,499 INFO L262 CegarLoopResult]: For program point L146(lines 146 612) no Hoare annotation was computed. [2020-12-09 16:08:31,499 INFO L262 CegarLoopResult]: For program point L113(lines 113 623) no Hoare annotation was computed. [2020-12-09 16:08:31,499 INFO L262 CegarLoopResult]: For program point L444(lines 444 449) no Hoare annotation was computed. [2020-12-09 16:08:31,499 INFO L258 CegarLoopResult]: At program point L180(lines 176 602) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse3 (< ULTIMATE.start_ssl3_accept_~s__state~0 8640)) (.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))) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse5 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse9 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (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))) (and .cse0 .cse2 .cse3 .cse6 .cse7 .cse8 (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) .cse1 .cse4 .cse5 .cse9))) [2020-12-09 16:08:31,499 INFO L258 CegarLoopResult]: At program point L147(lines 143 613) 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 16:08:31,499 INFO L262 CegarLoopResult]: For program point L412(lines 412 416) no Hoare annotation was computed. [2020-12-09 16:08:31,499 INFO L258 CegarLoopResult]: At program point L214(lines 107 625) 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 16:08:31,499 INFO L262 CegarLoopResult]: For program point L182(lines 182 600) no Hoare annotation was computed. [2020-12-09 16:08:31,499 INFO L262 CegarLoopResult]: For program point L149(lines 149 611) no Hoare annotation was computed. [2020-12-09 16:08:31,499 INFO L262 CegarLoopResult]: For program point L116(lines 116 622) no Hoare annotation was computed. [2020-12-09 16:08:31,500 INFO L262 CegarLoopResult]: For program point L480(lines 480 484) no Hoare annotation was computed. [2020-12-09 16:08:31,500 INFO L262 CegarLoopResult]: For program point L85-1(lines 66 675) no Hoare annotation was computed. [2020-12-09 16:08:31,500 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 16:08:31,500 INFO L262 CegarLoopResult]: For program point L185(lines 185 599) no Hoare annotation was computed. [2020-12-09 16:08:31,500 INFO L262 CegarLoopResult]: For program point L152(lines 152 610) no Hoare annotation was computed. [2020-12-09 16:08:31,500 INFO L262 CegarLoopResult]: For program point L119(lines 119 621) no Hoare annotation was computed. [2020-12-09 16:08:31,500 INFO L262 CegarLoopResult]: For program point L351(lines 351 382) no Hoare annotation was computed. [2020-12-09 16:08:31,500 INFO L258 CegarLoopResult]: At program point L186(lines 182 600) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse3 (< ULTIMATE.start_ssl3_accept_~s__state~0 8640)) (.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))) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse5 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse9 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (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))) (and .cse0 .cse2 .cse3 .cse6 .cse7 .cse8 (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) .cse1 .cse4 .cse5 .cse9))) [2020-12-09 16:08:31,500 INFO L258 CegarLoopResult]: At program point L153(lines 149 611) 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 16:08:31,500 INFO L262 CegarLoopResult]: For program point L219-2(lines 211 588) no Hoare annotation was computed. [2020-12-09 16:08:31,500 INFO L262 CegarLoopResult]: For program point L551(lines 551 555) no Hoare annotation was computed. [2020-12-09 16:08:31,500 INFO L262 CegarLoopResult]: For program point L188(lines 188 598) no Hoare annotation was computed. [2020-12-09 16:08:31,500 INFO L262 CegarLoopResult]: For program point L155(lines 155 609) no Hoare annotation was computed. [2020-12-09 16:08:31,500 INFO L262 CegarLoopResult]: For program point L122(lines 122 620) no Hoare annotation was computed. [2020-12-09 16:08:31,500 INFO L258 CegarLoopResult]: At program point L552(lines 66 675) the Hoare annotation is: false [2020-12-09 16:08:31,500 INFO L262 CegarLoopResult]: For program point L354(lines 354 381) no Hoare annotation was computed. [2020-12-09 16:08:31,500 INFO L262 CegarLoopResult]: For program point L354-1(lines 354 381) no Hoare annotation was computed. [2020-12-09 16:08:31,500 INFO L258 CegarLoopResult]: At program point L123(lines 119 621) 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 16:08:31,500 INFO L262 CegarLoopResult]: For program point L355(lines 355 378) no Hoare annotation was computed. [2020-12-09 16:08:31,501 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 16:08:31,501 INFO L262 CegarLoopResult]: For program point L256(lines 256 268) no Hoare annotation was computed. [2020-12-09 16:08:31,501 INFO L262 CegarLoopResult]: For program point L257(lines 257 262) no Hoare annotation was computed. [2020-12-09 16:08:31,501 INFO L262 CegarLoopResult]: For program point L191(lines 191 597) no Hoare annotation was computed. [2020-12-09 16:08:31,501 INFO L262 CegarLoopResult]: For program point L158(lines 158 608) no Hoare annotation was computed. [2020-12-09 16:08:31,501 INFO L258 CegarLoopResult]: At program point L125(lines 125 619) the Hoare annotation is: (let ((.cse12 (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (let ((.cse11 (= 8640 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse3 (not .cse12))) (let ((.cse8 (and (= 3 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse12)) (.cse9 (and .cse11 .cse3)) (.cse4 (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse6 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481))) (.cse0 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse5 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8672)) (.cse7 (or (not .cse11) .cse3))) (or (and (= ULTIMATE.start_ssl3_accept_~s__state~0 8544) .cse0) (and .cse1 (not (= 12292 ULTIMATE.start_ssl3_accept_~s__state~0)) (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse2 .cse3) (and .cse4 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 1)) (and (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545)) .cse1 .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)) .cse2 .cse0 .cse7) (and (or .cse8 .cse9) (= ULTIMATE.start_ssl3_accept_~s__state~0 8640) .cse3) (and (= ULTIMATE.start_ssl3_accept_~s__state~0 8512) .cse0) (and (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0) .cse0) (and (or .cse8 (and .cse6 .cse7) .cse9) (<= ULTIMATE.start_ssl3_accept_~s__state~0 8448)) (and .cse4 .cse0) (and (let ((.cse10 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8464))) (or (and (= ULTIMATE.start_ssl3_accept_~blastFlag~0 0) .cse6 .cse10) (and .cse6 .cse10 .cse0))) (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0)) (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 8576) .cse1 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576) .cse2 .cse0) (= ULTIMATE.start_ssl3_accept_~s__state~0 3) (and (= ULTIMATE.start_ssl3_accept_~s__state~0 8528) .cse0) (and (= 3 ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse5 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~0) .cse7))))) [2020-12-09 16:08:31,501 INFO L262 CegarLoopResult]: For program point L522(lines 522 527) no Hoare annotation was computed. [2020-12-09 16:08:31,501 INFO L262 CegarLoopResult]: For program point L390(lines 390 421) no Hoare annotation was computed. [2020-12-09 16:08:31,501 INFO L262 CegarLoopResult]: For program point L291-2(lines 211 588) no Hoare annotation was computed. [2020-12-09 16:08:31,501 INFO L258 CegarLoopResult]: At program point L192(lines 188 598) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.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))) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse4 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.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 .cse9 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (and .cse0 .cse2 .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) .cse1 .cse3 .cse4 .cse8 .cse9))) [2020-12-09 16:08:31,501 INFO L258 CegarLoopResult]: At program point L159(lines 155 609) 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 16:08:31,501 INFO L258 CegarLoopResult]: At program point L589(lines 101 657) the Hoare annotation is: (let ((.cse11 (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (let ((.cse10 (= 8640 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse6 (not .cse11))) (let ((.cse5 (or (and (= 3 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse11) (and .cse10 .cse6))) (.cse1 (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse3 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse8 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse0 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse7 (= 3 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8672)) (.cse4 (or (not .cse10) .cse6))) (or (and (= ULTIMATE.start_ssl3_accept_~s__state~0 8544) .cse0) (and .cse1 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 1)) (and (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480)) .cse2 .cse3 (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)) .cse0 .cse4) (and .cse5 (= ULTIMATE.start_ssl3_accept_~s__state~0 8640) .cse6) (and (= ULTIMATE.start_ssl3_accept_~s__state~0 8512) .cse0) (and (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse6) (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 8576) (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576) .cse0) (and (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0) .cse0) (and .cse7 .cse5 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8448) .cse8) (and .cse1 .cse0) (and (let ((.cse9 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8464))) (or (and (= ULTIMATE.start_ssl3_accept_~blastFlag~0 0) .cse3 .cse9) (and .cse3 .cse9 .cse0))) .cse8) (= ULTIMATE.start_ssl3_accept_~s__state~0 3) (and (= ULTIMATE.start_ssl3_accept_~s__state~0 8528) .cse0) (and .cse7 .cse2 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~0) .cse4))))) [2020-12-09 16:08:31,501 INFO L262 CegarLoopResult]: For program point L556(lines 556 560) no Hoare annotation was computed. [2020-12-09 16:08:31,502 INFO L262 CegarLoopResult]: For program point L391(lines 391 397) no Hoare annotation was computed. [2020-12-09 16:08:31,502 INFO L262 CegarLoopResult]: For program point L358(lines 358 377) no Hoare annotation was computed. [2020-12-09 16:08:31,502 INFO L262 CegarLoopResult]: For program point L491(lines 491 495) no Hoare annotation was computed. [2020-12-09 16:08:31,502 INFO L262 CegarLoopResult]: For program point L359-2(lines 358 375) no Hoare annotation was computed. [2020-12-09 16:08:31,502 INFO L262 CegarLoopResult]: For program point L194(lines 194 596) no Hoare annotation was computed. [2020-12-09 16:08:31,502 INFO L262 CegarLoopResult]: For program point L161(lines 161 607) no Hoare annotation was computed. [2020-12-09 16:08:31,502 INFO L262 CegarLoopResult]: For program point L128(lines 128 618) no Hoare annotation was computed. [2020-12-09 16:08:31,502 INFO L262 CegarLoopResult]: For program point L459(lines 459 463) no Hoare annotation was computed. [2020-12-09 16:08:31,502 INFO L262 CegarLoopResult]: For program point L327-1(lines 327 336) no Hoare annotation was computed. [2020-12-09 16:08:31,502 INFO L265 CegarLoopResult]: At program point L658(lines 100 659) the Hoare annotation is: true [2020-12-09 16:08:31,502 INFO L262 CegarLoopResult]: For program point L197(lines 197 595) no Hoare annotation was computed. [2020-12-09 16:08:31,502 INFO L262 CegarLoopResult]: For program point L164(lines 164 606) no Hoare annotation was computed. [2020-12-09 16:08:31,502 INFO L262 CegarLoopResult]: For program point L131(lines 131 617) no Hoare annotation was computed. [2020-12-09 16:08:31,502 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 669) no Hoare annotation was computed. [2020-12-09 16:08:31,502 INFO L262 CegarLoopResult]: For program point L627(lines 627 655) no Hoare annotation was computed. [2020-12-09 16:08:31,502 INFO L262 CegarLoopResult]: For program point L231(lines 231 248) no Hoare annotation was computed. [2020-12-09 16:08:31,502 INFO L258 CegarLoopResult]: At program point L198(lines 194 596) 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))) (not (= 8640 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0))) (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 16:08:31,502 INFO L258 CegarLoopResult]: At program point L165(lines 161 607) 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 16:08:31,502 INFO L262 CegarLoopResult]: For program point L231-2(lines 211 588) no Hoare annotation was computed. [2020-12-09 16:08:31,502 INFO L262 CegarLoopResult]: For program point L628(lines 628 652) no Hoare annotation was computed. [2020-12-09 16:08:31,502 INFO L262 CegarLoopResult]: For program point L529-2(lines 211 588) no Hoare annotation was computed. [2020-12-09 16:08:31,503 INFO L262 CegarLoopResult]: For program point L331(lines 331 335) no Hoare annotation was computed. [2020-12-09 16:08:31,503 INFO L262 CegarLoopResult]: For program point L629(lines 629 638) no Hoare annotation was computed. [2020-12-09 16:08:31,503 INFO L262 CegarLoopResult]: For program point L629-2(lines 628 650) no Hoare annotation was computed. [2020-12-09 16:08:31,503 INFO L262 CegarLoopResult]: For program point L464(lines 464 475) no Hoare annotation was computed. [2020-12-09 16:08:31,503 INFO L262 CegarLoopResult]: For program point L431(lines 431 435) no Hoare annotation was computed. [2020-12-09 16:08:31,503 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 16:08:31,503 INFO L262 CegarLoopResult]: For program point L233(lines 233 238) no Hoare annotation was computed. [2020-12-09 16:08:31,503 INFO L262 CegarLoopResult]: For program point L200(lines 200 594) no Hoare annotation was computed. [2020-12-09 16:08:31,503 INFO L262 CegarLoopResult]: For program point L167(lines 167 605) no Hoare annotation was computed. [2020-12-09 16:08:31,503 INFO L262 CegarLoopResult]: For program point L134(lines 134 616) no Hoare annotation was computed. [2020-12-09 16:08:31,503 INFO L258 CegarLoopResult]: At program point L101-2(lines 101 657) the Hoare annotation is: (let ((.cse11 (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (let ((.cse10 (= 8640 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse6 (not .cse11))) (let ((.cse5 (or (and (= 3 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse11) (and .cse10 .cse6))) (.cse1 (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse3 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse8 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse0 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse7 (= 3 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8672)) (.cse4 (or (not .cse10) .cse6))) (or (and (= ULTIMATE.start_ssl3_accept_~s__state~0 8544) .cse0) (and .cse1 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 1)) (and (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480)) .cse2 .cse3 (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)) .cse0 .cse4) (and .cse5 (= ULTIMATE.start_ssl3_accept_~s__state~0 8640) .cse6) (and (= ULTIMATE.start_ssl3_accept_~s__state~0 8512) .cse0) (and (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse6) (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 8576) (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576) .cse0) (and (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0) .cse0) (and .cse7 .cse5 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8448) .cse8) (and .cse1 .cse0) (and (let ((.cse9 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8464))) (or (and (= ULTIMATE.start_ssl3_accept_~blastFlag~0 0) .cse3 .cse9) (and .cse3 .cse9 .cse0))) .cse8) (= ULTIMATE.start_ssl3_accept_~s__state~0 3) (and (= ULTIMATE.start_ssl3_accept_~s__state~0 8528) .cse0) (and .cse7 .cse2 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~0) .cse4))))) [2020-12-09 16:08:31,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:08:31 BoogieIcfgContainer [2020-12-09 16:08:31,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 16:08:31,531 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 16:08:31,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 16:08:31,531 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 16:08:31,531 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:07:51" (3/4) ... [2020-12-09 16:08:31,533 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 16:08:31,545 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2020-12-09 16:08:31,546 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-09 16:08:31,547 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 16:08:31,547 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 16:08:31,611 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7bc64fe4-6564-4396-a2a3-4ba69b01b68b/bin/utaipan/witness.graphml [2020-12-09 16:08:31,611 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 16:08:31,611 INFO L168 Benchmark]: Toolchain (without parser) took 41120.04 ms. Allocated memory was 121.6 MB in the beginning and 903.9 MB in the end (delta: 782.2 MB). Free memory was 83.3 MB in the beginning and 808.1 MB in the end (delta: -724.9 MB). Peak memory consumption was 58.2 MB. Max. memory is 16.1 GB. [2020-12-09 16:08:31,612 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 121.6 MB. Free memory is still 99.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:08:31,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.39 ms. Allocated memory is still 121.6 MB. Free memory was 83.1 MB in the beginning and 92.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 16:08:31,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.48 ms. Allocated memory is still 121.6 MB. Free memory was 92.0 MB in the beginning and 89.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:08:31,612 INFO L168 Benchmark]: Boogie Preprocessor took 33.28 ms. Allocated memory is still 121.6 MB. Free memory was 89.5 MB in the beginning and 87.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:08:31,612 INFO L168 Benchmark]: RCFGBuilder took 689.23 ms. Allocated memory is still 121.6 MB. Free memory was 87.4 MB in the beginning and 51.7 MB in the end (delta: 35.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 16.1 GB. [2020-12-09 16:08:31,613 INFO L168 Benchmark]: TraceAbstraction took 40002.04 ms. Allocated memory was 121.6 MB in the beginning and 903.9 MB in the end (delta: 782.2 MB). Free memory was 51.7 MB in the beginning and 820.7 MB in the end (delta: -769.1 MB). Peak memory consumption was 518.3 MB. Max. memory is 16.1 GB. [2020-12-09 16:08:31,613 INFO L168 Benchmark]: Witness Printer took 79.91 ms. Allocated memory is still 903.9 MB. Free memory was 820.7 MB in the beginning and 808.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 16:08:31,614 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 121.6 MB. Free memory is still 99.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 261.39 ms. Allocated memory is still 121.6 MB. Free memory was 83.1 MB in the beginning and 92.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.48 ms. Allocated memory is still 121.6 MB. Free memory was 92.0 MB in the beginning and 89.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.28 ms. Allocated memory is still 121.6 MB. Free memory was 89.5 MB in the beginning and 87.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 689.23 ms. Allocated memory is still 121.6 MB. Free memory was 87.4 MB in the beginning and 51.7 MB in the end (delta: 35.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 40002.04 ms. Allocated memory was 121.6 MB in the beginning and 903.9 MB in the end (delta: 782.2 MB). Free memory was 51.7 MB in the beginning and 820.7 MB in the end (delta: -769.1 MB). Peak memory consumption was 518.3 MB. Max. memory is 16.1 GB. * Witness Printer took 79.91 ms. Allocated memory is still 903.9 MB. Free memory was 820.7 MB in the beginning and 808.1 MB in the end (delta: 12.6 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: 669]: 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)) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) || ((((((((((((!(s__state == 8545) && !(s__state == 8480)) && s__state < 8640) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && !(8640 == s__s3__tmp__next_state___0)) && 8448 <= s__state) && 2 == blastFlag) && !(8496 == s__state)) && !(s__state == 8544)) && !(8448 == s__state)) && !(s__state == 8481)) - 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: 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: (((((((((((((s__state == 8544 && 2 == blastFlag) || (8496 == s__state && blastFlag == 1)) || ((((((((((!(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) && (!(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 == 8512 && 2 == blastFlag)) || (blastFlag < 4 && !(s__hit == 0))) || ((s__s3__tmp__next_state___0 <= 8576 && s__state <= 8576) && 2 == blastFlag)) || (8560 == s__state && 2 == blastFlag)) || (((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)) || (8496 == s__state && 2 == blastFlag)) || ((((blastFlag == 0 && !(8448 == s__state)) && s__state <= 8464) || ((!(8448 == s__state) && s__state <= 8464) && 2 == blastFlag)) && 8448 <= s__state)) || s__state == 3) || (s__state == 8528 && 2 == blastFlag)) || (((3 == blastFlag && s__state <= 8672) && 8672 <= s__state) && (!(8640 == s__s3__tmp__next_state___0) || !(s__hit == 0))) - 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: 66]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 200]: Loop Invariant Derived loop invariant: (((8672 <= s__state && !(12292 == s__state)) && blastFlag < 4) && !(s__hit == 0)) || (((3 == blastFlag && s__state <= 8672) && 8672 <= s__state) && !(8640 == s__s3__tmp__next_state___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: 101]: Loop Invariant Derived loop invariant: (((((((((((((s__state == 8544 && 2 == blastFlag) || (8496 == s__state && blastFlag == 1)) || ((((((((((!(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) && (!(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 == 8512 && 2 == blastFlag)) || (blastFlag < 4 && !(s__hit == 0))) || ((s__s3__tmp__next_state___0 <= 8576 && s__state <= 8576) && 2 == blastFlag)) || (8560 == s__state && 2 == blastFlag)) || (((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)) || (8496 == s__state && 2 == blastFlag)) || ((((blastFlag == 0 && !(8448 == s__state)) && s__state <= 8464) || ((!(8448 == s__state) && s__state <= 8464) && 2 == blastFlag)) && 8448 <= s__state)) || s__state == 3) || (s__state == 8528 && 2 == blastFlag)) || (((3 == blastFlag && s__state <= 8672) && 8672 <= s__state) && (!(8640 == s__s3__tmp__next_state___0) || !(s__hit == 0))) - 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))) && !(8640 == s__s3__tmp__next_state___0)) || ((((((((!(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: 66]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: (((((((((((((s__state == 8544 && 2 == blastFlag) || ((((!(s__state == 8480) && !(12292 == s__state)) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0))) || (8496 == s__state && blastFlag == 1)) || ((((((((((!(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) && (!(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 == 8512 && 2 == blastFlag)) || (8560 == s__state && 2 == blastFlag)) || ((((3 == s__s3__tmp__next_state___0 && s__hit == 0) || (!(8448 == s__state) && (!(8640 == s__s3__tmp__next_state___0) || !(s__hit == 0)))) || (8640 == s__s3__tmp__next_state___0 && !(s__hit == 0))) && s__state <= 8448)) || (8496 == s__state && 2 == blastFlag)) || ((((blastFlag == 0 && !(8448 == s__state)) && s__state <= 8464) || ((!(8448 == s__state) && s__state <= 8464) && 2 == blastFlag)) && 8448 <= s__state)) || ((((s__s3__tmp__next_state___0 <= 8576 && !(s__state == 8480)) && s__state <= 8576) && !(s__state == 8481)) && 2 == blastFlag)) || s__state == 3) || (s__state == 8528 && 2 == blastFlag)) || (((3 == blastFlag && s__state <= 8672) && 8672 <= s__state) && (!(8640 == s__s3__tmp__next_state___0) || !(s__hit == 0))) - 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)) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) || ((((((((((((!(s__state == 8545) && !(s__state == 8480)) && s__state < 8640) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && !(8640 == s__s3__tmp__next_state___0)) && 8448 <= s__state) && 2 == blastFlag) && !(8496 == s__state)) && !(s__state == 8544)) && !(8448 == s__state)) && !(s__state == 8481)) - 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: 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) && !(s__state == 8481)) && !(s__hit == 0)) || ((((((((((((!(s__state == 8545) && !(s__state == 8480)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && !(8640 == s__s3__tmp__next_state___0)) && 8448 <= s__state) && 2 == blastFlag) && !(8496 == s__state)) && !(s__state == 8544)) && !(8448 == s__state)) && s__state < 8656) && !(s__state == 8481)) - 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: (((((((((((((s__state == 8544 && 2 == blastFlag) || (8496 == s__state && blastFlag == 1)) || ((((((((((!(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) && (!(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 == 8512 && 2 == blastFlag)) || (blastFlag < 4 && !(s__hit == 0))) || ((s__s3__tmp__next_state___0 <= 8576 && s__state <= 8576) && 2 == blastFlag)) || (8560 == s__state && 2 == blastFlag)) || (((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)) || (8496 == s__state && 2 == blastFlag)) || ((((blastFlag == 0 && !(8448 == s__state)) && s__state <= 8464) || ((!(8448 == s__state) && s__state <= 8464) && 2 == blastFlag)) && 8448 <= s__state)) || s__state == 3) || (s__state == 8528 && 2 == blastFlag)) || (((3 == blastFlag && s__state <= 8672) && 8672 <= s__state) && (!(8640 == s__s3__tmp__next_state___0) || !(s__hit == 0))) - 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)) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) || ((((((((((((!(s__state == 8545) && !(s__state == 8480)) && s__state < 8640) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && !(8640 == s__s3__tmp__next_state___0)) && 8448 <= s__state) && 2 == blastFlag) && !(8496 == s__state)) && !(s__state == 8544)) && !(8448 == s__state)) && !(s__state == 8481)) - 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: 35.0s, OverallIterations: 30, TraceHistogramMax: 25, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3913 SDtfs, 4006 SDslu, 3560 SDs, 0 SdLazy, 5242 SolverSat, 1249 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8612 GetRequests, 8531 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s 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, 2150 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 26 LocationsWithAnnotation, 26 PreInvPairs, 324 NumberOfFragments, 2474 HoareAnnotationTreeSize, 26 FomulaSimplifications, 124170 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 26 FomulaSimplificationsInter, 22201 FormulaSimplificationTreeSizeReductionInter, 4.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 6130 NumberOfCodeBlocks, 5853 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 10367 ConstructedInterpolants, 0 QuantifiedInterpolants, 6348410 SizeOfPredicates, 14 NumberOfNonLiveVariables, 6797 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...