./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 782042467f0cb3a7476d3c48a134dfd084f9a32e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 782042467f0cb3a7476d3c48a134dfd084f9a32e .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 16:06:37,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 16:06:37,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 16:06:37,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 16:06:37,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 16:06:37,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 16:06:37,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 16:06:37,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 16:06:37,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 16:06:37,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 16:06:37,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 16:06:37,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 16:06:37,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 16:06:37,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 16:06:37,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 16:06:37,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 16:06:37,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 16:06:37,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 16:06:37,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 16:06:37,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 16:06:37,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 16:06:37,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 16:06:37,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 16:06:37,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 16:06:37,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 16:06:37,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 16:06:37,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 16:06:37,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 16:06:37,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 16:06:37,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 16:06:37,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 16:06:37,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 16:06:37,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 16:06:37,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 16:06:37,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 16:06:37,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 16:06:37,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 16:06:37,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 16:06:37,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 16:06:37,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 16:06:37,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 16:06:37,462 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 16:06:37,505 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 16:06:37,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 16:06:37,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 16:06:37,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 16:06:37,507 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 16:06:37,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 16:06:37,507 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 16:06:37,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 16:06:37,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 16:06:37,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 16:06:37,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 16:06:37,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 16:06:37,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 16:06:37,509 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 16:06:37,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 16:06:37,510 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 16:06:37,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 16:06:37,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 16:06:37,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 16:06:37,511 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 16:06:37,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 16:06:37,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 16:06:37,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 16:06:37,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 16:06:37,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 16:06:37,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 16:06:37,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 16:06:37,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 16:06:37,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 16:06:37,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 782042467f0cb3a7476d3c48a134dfd084f9a32e [2020-12-01 16:06:37,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 16:06:37,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 16:06:37,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 16:06:37,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 16:06:37,792 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 16:06:37,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/../../sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c [2020-12-01 16:06:37,908 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/data/9927ab280/9e7dc2076769441faa08683bdef69514/FLAGcc1f4bbe2 [2020-12-01 16:06:38,509 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 16:06:38,509 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c [2020-12-01 16:06:38,556 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/data/9927ab280/9e7dc2076769441faa08683bdef69514/FLAGcc1f4bbe2 [2020-12-01 16:06:38,752 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/data/9927ab280/9e7dc2076769441faa08683bdef69514 [2020-12-01 16:06:38,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 16:06:38,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 16:06:38,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 16:06:38,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 16:06:38,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 16:06:38,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:06:38" (1/1) ... [2020-12-01 16:06:38,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@438be723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:38, skipping insertion in model container [2020-12-01 16:06:38,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:06:38" (1/1) ... [2020-12-01 16:06:38,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 16:06:38,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 16:06:39,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:06:39,338 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 16:06:39,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:06:39,496 INFO L208 MainTranslator]: Completed translation [2020-12-01 16:06:39,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:39 WrapperNode [2020-12-01 16:06:39,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 16:06:39,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 16:06:39,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 16:06:39,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 16:06:39,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:39" (1/1) ... [2020-12-01 16:06:39,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:39" (1/1) ... [2020-12-01 16:06:39,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 16:06:39,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 16:06:39,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 16:06:39,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 16:06:39,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:39" (1/1) ... [2020-12-01 16:06:39,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:39" (1/1) ... [2020-12-01 16:06:39,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:39" (1/1) ... [2020-12-01 16:06:39,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:39" (1/1) ... [2020-12-01 16:06:39,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:39" (1/1) ... [2020-12-01 16:06:39,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:39" (1/1) ... [2020-12-01 16:06:39,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:39" (1/1) ... [2020-12-01 16:06:39,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 16:06:39,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 16:06:39,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 16:06:39,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 16:06:39,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/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 [2020-12-01 16:06:39,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 16:06:39,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 16:06:39,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 16:06:39,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 16:06:39,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 16:06:39,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 16:06:39,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 16:06:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 16:06:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 16:06:40,067 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-01 16:06:41,098 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-12-01 16:06:41,099 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-12-01 16:06:41,108 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 16:06:41,109 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-01 16:06:41,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:06:41 BoogieIcfgContainer [2020-12-01 16:06:41,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 16:06:41,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 16:06:41,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 16:06:41,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 16:06:41,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 04:06:38" (1/3) ... [2020-12-01 16:06:41,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321e8cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:06:41, skipping insertion in model container [2020-12-01 16:06:41,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:39" (2/3) ... [2020-12-01 16:06:41,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321e8cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:06:41, skipping insertion in model container [2020-12-01 16:06:41,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:06:41" (3/3) ... [2020-12-01 16:06:41,122 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.01.i.cil-2.c [2020-12-01 16:06:41,143 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 16:06:41,148 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 16:06:41,161 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 16:06:41,205 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 16:06:41,205 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 16:06:41,206 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 16:06:41,206 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 16:06:41,206 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 16:06:41,206 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 16:06:41,206 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 16:06:41,206 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 16:06:41,230 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-12-01 16:06:41,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 16:06:41,243 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:41,244 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] [2020-12-01 16:06:41,244 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:41,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:41,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1457703967, now seen corresponding path program 1 times [2020-12-01 16:06:41,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:41,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450599949] [2020-12-01 16:06:41,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:41,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:41,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450599949] [2020-12-01 16:06:41,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:41,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:41,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179387234] [2020-12-01 16:06:41,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:41,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:41,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:41,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:41,692 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 4 states. [2020-12-01 16:06:42,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:42,253 INFO L93 Difference]: Finished difference Result 260 states and 433 transitions. [2020-12-01 16:06:42,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:42,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-12-01 16:06:42,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:42,282 INFO L225 Difference]: With dead ends: 260 [2020-12-01 16:06:42,283 INFO L226 Difference]: Without dead ends: 118 [2020-12-01 16:06:42,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:42,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-01 16:06:42,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-12-01 16:06:42,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-12-01 16:06:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 174 transitions. [2020-12-01 16:06:42,336 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 174 transitions. Word has length 24 [2020-12-01 16:06:42,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:42,336 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 174 transitions. [2020-12-01 16:06:42,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:42,337 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 174 transitions. [2020-12-01 16:06:42,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-01 16:06:42,338 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:42,339 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-01 16:06:42,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 16:06:42,339 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:42,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:42,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1411658380, now seen corresponding path program 1 times [2020-12-01 16:06:42,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:42,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974288200] [2020-12-01 16:06:42,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-01 16:06:42,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974288200] [2020-12-01 16:06:42,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:42,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:06:42,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567099935] [2020-12-01 16:06:42,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:06:42,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:42,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:06:42,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:06:42,564 INFO L87 Difference]: Start difference. First operand 117 states and 174 transitions. Second operand 3 states. [2020-12-01 16:06:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:42,651 INFO L93 Difference]: Finished difference Result 327 states and 490 transitions. [2020-12-01 16:06:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:06:42,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-01 16:06:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:42,657 INFO L225 Difference]: With dead ends: 327 [2020-12-01 16:06:42,657 INFO L226 Difference]: Without dead ends: 220 [2020-12-01 16:06:42,658 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 [2020-12-01 16:06:42,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-12-01 16:06:42,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-12-01 16:06:42,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-12-01 16:06:42,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 324 transitions. [2020-12-01 16:06:42,696 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 324 transitions. Word has length 39 [2020-12-01 16:06:42,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:42,698 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 324 transitions. [2020-12-01 16:06:42,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:06:42,698 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 324 transitions. [2020-12-01 16:06:42,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-01 16:06:42,703 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:42,703 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-12-01 16:06:42,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 16:06:42,704 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:42,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:42,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1352249408, now seen corresponding path program 1 times [2020-12-01 16:06:42,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:42,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378335342] [2020-12-01 16:06:42,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-01 16:06:42,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378335342] [2020-12-01 16:06:42,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:42,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:06:42,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360269706] [2020-12-01 16:06:42,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:06:42,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:42,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:06:42,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:06:42,904 INFO L87 Difference]: Start difference. First operand 220 states and 324 transitions. Second operand 3 states. [2020-12-01 16:06:43,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:43,070 INFO L93 Difference]: Finished difference Result 429 states and 639 transitions. [2020-12-01 16:06:43,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:06:43,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-01 16:06:43,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:43,086 INFO L225 Difference]: With dead ends: 429 [2020-12-01 16:06:43,090 INFO L226 Difference]: Without dead ends: 322 [2020-12-01 16:06:43,091 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 [2020-12-01 16:06:43,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-12-01 16:06:43,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2020-12-01 16:06:43,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-12-01 16:06:43,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 473 transitions. [2020-12-01 16:06:43,143 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 473 transitions. Word has length 54 [2020-12-01 16:06:43,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:43,144 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 473 transitions. [2020-12-01 16:06:43,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:06:43,145 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 473 transitions. [2020-12-01 16:06:43,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-01 16:06:43,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:43,159 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:43,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 16:06:43,159 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:43,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:43,160 INFO L82 PathProgramCache]: Analyzing trace with hash 210697016, now seen corresponding path program 1 times [2020-12-01 16:06:43,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:43,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920316353] [2020-12-01 16:06:43,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:43,331 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:43,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920316353] [2020-12-01 16:06:43,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:43,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:43,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680981291] [2020-12-01 16:06:43,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:43,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:43,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:43,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:43,334 INFO L87 Difference]: Start difference. First operand 322 states and 473 transitions. Second operand 4 states. [2020-12-01 16:06:44,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:44,077 INFO L93 Difference]: Finished difference Result 822 states and 1213 transitions. [2020-12-01 16:06:44,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:44,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-12-01 16:06:44,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:44,087 INFO L225 Difference]: With dead ends: 822 [2020-12-01 16:06:44,087 INFO L226 Difference]: Without dead ends: 510 [2020-12-01 16:06:44,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:44,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-12-01 16:06:44,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 372. [2020-12-01 16:06:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-12-01 16:06:44,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 559 transitions. [2020-12-01 16:06:44,130 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 559 transitions. Word has length 72 [2020-12-01 16:06:44,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:44,130 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 559 transitions. [2020-12-01 16:06:44,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:44,130 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 559 transitions. [2020-12-01 16:06:44,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-01 16:06:44,133 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:44,133 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:44,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 16:06:44,134 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:44,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:44,134 INFO L82 PathProgramCache]: Analyzing trace with hash 76683510, now seen corresponding path program 1 times [2020-12-01 16:06:44,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:44,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798476424] [2020-12-01 16:06:44,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:44,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798476424] [2020-12-01 16:06:44,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:44,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:44,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736999538] [2020-12-01 16:06:44,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:44,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:44,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:44,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:44,295 INFO L87 Difference]: Start difference. First operand 372 states and 559 transitions. Second operand 4 states. [2020-12-01 16:06:44,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:44,829 INFO L93 Difference]: Finished difference Result 818 states and 1229 transitions. [2020-12-01 16:06:44,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:44,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-12-01 16:06:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:44,833 INFO L225 Difference]: With dead ends: 818 [2020-12-01 16:06:44,836 INFO L226 Difference]: Without dead ends: 456 [2020-12-01 16:06:44,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:44,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-12-01 16:06:44,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 412. [2020-12-01 16:06:44,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-12-01 16:06:44,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 627 transitions. [2020-12-01 16:06:44,856 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 627 transitions. Word has length 72 [2020-12-01 16:06:44,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:44,856 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 627 transitions. [2020-12-01 16:06:44,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:44,857 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 627 transitions. [2020-12-01 16:06:44,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-01 16:06:44,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:44,859 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:44,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 16:06:44,859 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:44,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:44,860 INFO L82 PathProgramCache]: Analyzing trace with hash -2062745025, now seen corresponding path program 1 times [2020-12-01 16:06:44,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:44,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354595738] [2020-12-01 16:06:44,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:45,001 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:45,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354595738] [2020-12-01 16:06:45,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:45,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:45,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952329034] [2020-12-01 16:06:45,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:45,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:45,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:45,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:45,004 INFO L87 Difference]: Start difference. First operand 412 states and 627 transitions. Second operand 4 states. [2020-12-01 16:06:45,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:45,643 INFO L93 Difference]: Finished difference Result 946 states and 1426 transitions. [2020-12-01 16:06:45,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:45,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-12-01 16:06:45,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:45,647 INFO L225 Difference]: With dead ends: 946 [2020-12-01 16:06:45,647 INFO L226 Difference]: Without dead ends: 544 [2020-12-01 16:06:45,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:45,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-12-01 16:06:45,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 414. [2020-12-01 16:06:45,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-12-01 16:06:45,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 629 transitions. [2020-12-01 16:06:45,666 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 629 transitions. Word has length 73 [2020-12-01 16:06:45,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:45,667 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 629 transitions. [2020-12-01 16:06:45,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:45,668 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 629 transitions. [2020-12-01 16:06:45,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-01 16:06:45,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:45,672 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:45,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 16:06:45,672 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:45,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:45,673 INFO L82 PathProgramCache]: Analyzing trace with hash 475156595, now seen corresponding path program 1 times [2020-12-01 16:06:45,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:45,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614036425] [2020-12-01 16:06:45,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:45,818 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:45,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614036425] [2020-12-01 16:06:45,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:45,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:45,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633135303] [2020-12-01 16:06:45,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:45,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:45,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:45,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:45,822 INFO L87 Difference]: Start difference. First operand 414 states and 629 transitions. Second operand 4 states. [2020-12-01 16:06:46,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:46,462 INFO L93 Difference]: Finished difference Result 948 states and 1426 transitions. [2020-12-01 16:06:46,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:46,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-12-01 16:06:46,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:46,467 INFO L225 Difference]: With dead ends: 948 [2020-12-01 16:06:46,467 INFO L226 Difference]: Without dead ends: 544 [2020-12-01 16:06:46,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:46,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-12-01 16:06:46,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 416. [2020-12-01 16:06:46,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-12-01 16:06:46,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 631 transitions. [2020-12-01 16:06:46,486 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 631 transitions. Word has length 74 [2020-12-01 16:06:46,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:46,486 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 631 transitions. [2020-12-01 16:06:46,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:46,486 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 631 transitions. [2020-12-01 16:06:46,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-01 16:06:46,488 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:46,488 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:46,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 16:06:46,488 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:46,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:46,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1840475418, now seen corresponding path program 1 times [2020-12-01 16:06:46,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:46,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128589804] [2020-12-01 16:06:46,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:46,610 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:46,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128589804] [2020-12-01 16:06:46,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:46,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:46,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869832444] [2020-12-01 16:06:46,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:46,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:46,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:46,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:46,612 INFO L87 Difference]: Start difference. First operand 416 states and 631 transitions. Second operand 4 states. [2020-12-01 16:06:47,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:47,273 INFO L93 Difference]: Finished difference Result 940 states and 1414 transitions. [2020-12-01 16:06:47,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:47,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-01 16:06:47,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:47,278 INFO L225 Difference]: With dead ends: 940 [2020-12-01 16:06:47,278 INFO L226 Difference]: Without dead ends: 534 [2020-12-01 16:06:47,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:47,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-12-01 16:06:47,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 418. [2020-12-01 16:06:47,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-01 16:06:47,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 633 transitions. [2020-12-01 16:06:47,293 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 633 transitions. Word has length 75 [2020-12-01 16:06:47,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:47,293 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 633 transitions. [2020-12-01 16:06:47,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:47,294 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 633 transitions. [2020-12-01 16:06:47,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-01 16:06:47,300 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:47,301 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-12-01 16:06:47,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 16:06:47,301 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:47,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:47,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1935805867, now seen corresponding path program 2 times [2020-12-01 16:06:47,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:47,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575746025] [2020-12-01 16:06:47,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:47,402 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:47,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575746025] [2020-12-01 16:06:47,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:47,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:47,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411032188] [2020-12-01 16:06:47,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:47,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:47,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:47,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:47,404 INFO L87 Difference]: Start difference. First operand 418 states and 633 transitions. Second operand 4 states. [2020-12-01 16:06:47,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:47,988 INFO L93 Difference]: Finished difference Result 940 states and 1412 transitions. [2020-12-01 16:06:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:47,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-01 16:06:47,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:47,994 INFO L225 Difference]: With dead ends: 940 [2020-12-01 16:06:47,994 INFO L226 Difference]: Without dead ends: 532 [2020-12-01 16:06:47,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:47,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-12-01 16:06:48,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 418. [2020-12-01 16:06:48,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-01 16:06:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 631 transitions. [2020-12-01 16:06:48,011 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 631 transitions. Word has length 87 [2020-12-01 16:06:48,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:48,012 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 631 transitions. [2020-12-01 16:06:48,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:48,012 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 631 transitions. [2020-12-01 16:06:48,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-01 16:06:48,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:48,014 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-12-01 16:06:48,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-01 16:06:48,014 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:48,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:48,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1954461325, now seen corresponding path program 1 times [2020-12-01 16:06:48,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:48,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705925568] [2020-12-01 16:06:48,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:48,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705925568] [2020-12-01 16:06:48,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:48,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:48,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168524332] [2020-12-01 16:06:48,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:48,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:48,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:48,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:48,105 INFO L87 Difference]: Start difference. First operand 418 states and 631 transitions. Second operand 4 states. [2020-12-01 16:06:48,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:48,726 INFO L93 Difference]: Finished difference Result 940 states and 1408 transitions. [2020-12-01 16:06:48,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:48,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-01 16:06:48,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:48,730 INFO L225 Difference]: With dead ends: 940 [2020-12-01 16:06:48,731 INFO L226 Difference]: Without dead ends: 532 [2020-12-01 16:06:48,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:48,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-12-01 16:06:48,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 418. [2020-12-01 16:06:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-01 16:06:48,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 629 transitions. [2020-12-01 16:06:48,747 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 629 transitions. Word has length 87 [2020-12-01 16:06:48,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:48,747 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 629 transitions. [2020-12-01 16:06:48,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:48,748 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 629 transitions. [2020-12-01 16:06:48,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-01 16:06:48,749 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:48,749 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-12-01 16:06:48,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-01 16:06:48,750 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:48,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:48,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1635005334, now seen corresponding path program 1 times [2020-12-01 16:06:48,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:48,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778718621] [2020-12-01 16:06:48,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:48,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778718621] [2020-12-01 16:06:48,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:48,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:48,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844805881] [2020-12-01 16:06:48,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:48,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:48,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:48,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:48,849 INFO L87 Difference]: Start difference. First operand 418 states and 629 transitions. Second operand 4 states. [2020-12-01 16:06:49,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:49,493 INFO L93 Difference]: Finished difference Result 791 states and 1178 transitions. [2020-12-01 16:06:49,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:49,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-01 16:06:49,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:49,497 INFO L225 Difference]: With dead ends: 791 [2020-12-01 16:06:49,497 INFO L226 Difference]: Without dead ends: 532 [2020-12-01 16:06:49,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:49,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-12-01 16:06:49,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 418. [2020-12-01 16:06:49,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-01 16:06:49,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 627 transitions. [2020-12-01 16:06:49,515 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 627 transitions. Word has length 87 [2020-12-01 16:06:49,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:49,515 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 627 transitions. [2020-12-01 16:06:49,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:49,515 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 627 transitions. [2020-12-01 16:06:49,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-01 16:06:49,517 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:49,517 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-12-01 16:06:49,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-01 16:06:49,518 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:49,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:49,518 INFO L82 PathProgramCache]: Analyzing trace with hash 513794263, now seen corresponding path program 2 times [2020-12-01 16:06:49,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:49,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285845269] [2020-12-01 16:06:49,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:49,630 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:49,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285845269] [2020-12-01 16:06:49,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:49,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:49,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135417363] [2020-12-01 16:06:49,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:49,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:49,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:49,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:49,633 INFO L87 Difference]: Start difference. First operand 418 states and 627 transitions. Second operand 4 states. [2020-12-01 16:06:50,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:50,123 INFO L93 Difference]: Finished difference Result 868 states and 1293 transitions. [2020-12-01 16:06:50,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:50,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-01 16:06:50,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:50,127 INFO L225 Difference]: With dead ends: 868 [2020-12-01 16:06:50,127 INFO L226 Difference]: Without dead ends: 460 [2020-12-01 16:06:50,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-12-01 16:06:50,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 418. [2020-12-01 16:06:50,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-01 16:06:50,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 625 transitions. [2020-12-01 16:06:50,142 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 625 transitions. Word has length 87 [2020-12-01 16:06:50,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:50,143 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 625 transitions. [2020-12-01 16:06:50,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:50,143 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 625 transitions. [2020-12-01 16:06:50,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-01 16:06:50,145 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:50,145 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-12-01 16:06:50,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-01 16:06:50,145 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:50,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:50,146 INFO L82 PathProgramCache]: Analyzing trace with hash 495138805, now seen corresponding path program 1 times [2020-12-01 16:06:50,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:50,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435655162] [2020-12-01 16:06:50,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:50,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435655162] [2020-12-01 16:06:50,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:50,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:50,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831779831] [2020-12-01 16:06:50,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:50,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:50,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:50,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:50,256 INFO L87 Difference]: Start difference. First operand 418 states and 625 transitions. Second operand 4 states. [2020-12-01 16:06:50,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:50,821 INFO L93 Difference]: Finished difference Result 868 states and 1289 transitions. [2020-12-01 16:06:50,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:50,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-01 16:06:50,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:50,825 INFO L225 Difference]: With dead ends: 868 [2020-12-01 16:06:50,825 INFO L226 Difference]: Without dead ends: 460 [2020-12-01 16:06:50,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:50,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-12-01 16:06:50,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 418. [2020-12-01 16:06:50,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-01 16:06:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 623 transitions. [2020-12-01 16:06:50,839 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 623 transitions. Word has length 87 [2020-12-01 16:06:50,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:50,839 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 623 transitions. [2020-12-01 16:06:50,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:50,840 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 623 transitions. [2020-12-01 16:06:50,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-01 16:06:50,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:50,841 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-12-01 16:06:50,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-01 16:06:50,842 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:50,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:50,842 INFO L82 PathProgramCache]: Analyzing trace with hash -210361832, now seen corresponding path program 1 times [2020-12-01 16:06:50,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:50,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684066776] [2020-12-01 16:06:50,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:50,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684066776] [2020-12-01 16:06:50,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:50,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:50,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899812701] [2020-12-01 16:06:50,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:50,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:50,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:50,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:50,937 INFO L87 Difference]: Start difference. First operand 418 states and 623 transitions. Second operand 4 states. [2020-12-01 16:06:51,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:51,461 INFO L93 Difference]: Finished difference Result 719 states and 1062 transitions. [2020-12-01 16:06:51,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:51,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-01 16:06:51,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:51,464 INFO L225 Difference]: With dead ends: 719 [2020-12-01 16:06:51,464 INFO L226 Difference]: Without dead ends: 460 [2020-12-01 16:06:51,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:51,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-12-01 16:06:51,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 418. [2020-12-01 16:06:51,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-01 16:06:51,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 621 transitions. [2020-12-01 16:06:51,479 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 621 transitions. Word has length 87 [2020-12-01 16:06:51,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:51,479 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 621 transitions. [2020-12-01 16:06:51,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:51,479 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 621 transitions. [2020-12-01 16:06:51,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-01 16:06:51,481 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:51,481 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-12-01 16:06:51,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-01 16:06:51,481 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:51,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:51,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1668397004, now seen corresponding path program 1 times [2020-12-01 16:06:51,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:51,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37170000] [2020-12-01 16:06:51,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:51,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37170000] [2020-12-01 16:06:51,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:51,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:51,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100519406] [2020-12-01 16:06:51,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:51,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:51,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:51,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:51,552 INFO L87 Difference]: Start difference. First operand 418 states and 621 transitions. Second operand 4 states. [2020-12-01 16:06:52,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:52,252 INFO L93 Difference]: Finished difference Result 940 states and 1388 transitions. [2020-12-01 16:06:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:52,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-12-01 16:06:52,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:52,256 INFO L225 Difference]: With dead ends: 940 [2020-12-01 16:06:52,257 INFO L226 Difference]: Without dead ends: 532 [2020-12-01 16:06:52,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:52,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-12-01 16:06:52,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 418. [2020-12-01 16:06:52,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-01 16:06:52,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 619 transitions. [2020-12-01 16:06:52,277 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 619 transitions. Word has length 88 [2020-12-01 16:06:52,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:52,277 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 619 transitions. [2020-12-01 16:06:52,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:52,277 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 619 transitions. [2020-12-01 16:06:52,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-01 16:06:52,279 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:52,279 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:52,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-01 16:06:52,279 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:52,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:52,280 INFO L82 PathProgramCache]: Analyzing trace with hash -570561745, now seen corresponding path program 1 times [2020-12-01 16:06:52,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:52,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690994218] [2020-12-01 16:06:52,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:52,363 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:52,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690994218] [2020-12-01 16:06:52,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:52,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:52,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712424016] [2020-12-01 16:06:52,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:52,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:52,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:52,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:52,367 INFO L87 Difference]: Start difference. First operand 418 states and 619 transitions. Second operand 4 states. [2020-12-01 16:06:53,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:53,016 INFO L93 Difference]: Finished difference Result 785 states and 1156 transitions. [2020-12-01 16:06:53,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:53,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-12-01 16:06:53,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:53,021 INFO L225 Difference]: With dead ends: 785 [2020-12-01 16:06:53,021 INFO L226 Difference]: Without dead ends: 526 [2020-12-01 16:06:53,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:53,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-12-01 16:06:53,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 418. [2020-12-01 16:06:53,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-01 16:06:53,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 617 transitions. [2020-12-01 16:06:53,043 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 617 transitions. Word has length 88 [2020-12-01 16:06:53,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:53,044 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 617 transitions. [2020-12-01 16:06:53,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:53,044 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 617 transitions. [2020-12-01 16:06:53,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-01 16:06:53,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:53,046 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-12-01 16:06:53,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-01 16:06:53,046 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:53,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:53,047 INFO L82 PathProgramCache]: Analyzing trace with hash 296589706, now seen corresponding path program 1 times [2020-12-01 16:06:53,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:53,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877939386] [2020-12-01 16:06:53,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:53,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877939386] [2020-12-01 16:06:53,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:53,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:53,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381607169] [2020-12-01 16:06:53,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:53,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:53,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:53,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:53,138 INFO L87 Difference]: Start difference. First operand 418 states and 617 transitions. Second operand 4 states. [2020-12-01 16:06:53,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:53,686 INFO L93 Difference]: Finished difference Result 868 states and 1273 transitions. [2020-12-01 16:06:53,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:53,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-12-01 16:06:53,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:53,690 INFO L225 Difference]: With dead ends: 868 [2020-12-01 16:06:53,690 INFO L226 Difference]: Without dead ends: 460 [2020-12-01 16:06:53,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:53,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-12-01 16:06:53,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 418. [2020-12-01 16:06:53,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-01 16:06:53,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 615 transitions. [2020-12-01 16:06:53,705 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 615 transitions. Word has length 88 [2020-12-01 16:06:53,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:53,706 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 615 transitions. [2020-12-01 16:06:53,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:53,706 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 615 transitions. [2020-12-01 16:06:53,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-01 16:06:53,707 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:53,707 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:53,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-01 16:06:53,708 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:53,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:53,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1942369043, now seen corresponding path program 1 times [2020-12-01 16:06:53,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:53,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179291232] [2020-12-01 16:06:53,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:53,776 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:53,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179291232] [2020-12-01 16:06:53,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:53,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:53,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165558266] [2020-12-01 16:06:53,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:53,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:53,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:53,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:53,780 INFO L87 Difference]: Start difference. First operand 418 states and 615 transitions. Second operand 4 states. [2020-12-01 16:06:54,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:54,370 INFO L93 Difference]: Finished difference Result 713 states and 1043 transitions. [2020-12-01 16:06:54,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:54,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-12-01 16:06:54,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:54,374 INFO L225 Difference]: With dead ends: 713 [2020-12-01 16:06:54,375 INFO L226 Difference]: Without dead ends: 454 [2020-12-01 16:06:54,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:54,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-12-01 16:06:54,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 418. [2020-12-01 16:06:54,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-01 16:06:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 613 transitions. [2020-12-01 16:06:54,390 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 613 transitions. Word has length 88 [2020-12-01 16:06:54,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:54,390 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 613 transitions. [2020-12-01 16:06:54,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:54,391 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 613 transitions. [2020-12-01 16:06:54,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-01 16:06:54,392 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:54,392 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-12-01 16:06:54,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-01 16:06:54,395 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:54,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:54,395 INFO L82 PathProgramCache]: Analyzing trace with hash -233112104, now seen corresponding path program 1 times [2020-12-01 16:06:54,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:54,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705720913] [2020-12-01 16:06:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:54,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705720913] [2020-12-01 16:06:54,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:54,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:54,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098722735] [2020-12-01 16:06:54,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:54,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:54,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:54,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:54,486 INFO L87 Difference]: Start difference. First operand 418 states and 613 transitions. Second operand 4 states. [2020-12-01 16:06:55,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:55,145 INFO L93 Difference]: Finished difference Result 934 states and 1365 transitions. [2020-12-01 16:06:55,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:55,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-12-01 16:06:55,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:55,152 INFO L225 Difference]: With dead ends: 934 [2020-12-01 16:06:55,152 INFO L226 Difference]: Without dead ends: 526 [2020-12-01 16:06:55,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:55,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-12-01 16:06:55,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 418. [2020-12-01 16:06:55,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-01 16:06:55,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 611 transitions. [2020-12-01 16:06:55,168 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 611 transitions. Word has length 89 [2020-12-01 16:06:55,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:55,168 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 611 transitions. [2020-12-01 16:06:55,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:55,168 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 611 transitions. [2020-12-01 16:06:55,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-01 16:06:55,170 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:55,170 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-12-01 16:06:55,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-01 16:06:55,170 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:55,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:55,171 INFO L82 PathProgramCache]: Analyzing trace with hash 190534618, now seen corresponding path program 1 times [2020-12-01 16:06:55,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:55,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440566282] [2020-12-01 16:06:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:55,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440566282] [2020-12-01 16:06:55,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:55,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:55,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547353807] [2020-12-01 16:06:55,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:55,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:55,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:55,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:55,253 INFO L87 Difference]: Start difference. First operand 418 states and 611 transitions. Second operand 4 states. [2020-12-01 16:06:55,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:55,725 INFO L93 Difference]: Finished difference Result 862 states and 1254 transitions. [2020-12-01 16:06:55,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:55,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-12-01 16:06:55,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:55,729 INFO L225 Difference]: With dead ends: 862 [2020-12-01 16:06:55,730 INFO L226 Difference]: Without dead ends: 454 [2020-12-01 16:06:55,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:55,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-12-01 16:06:55,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 418. [2020-12-01 16:06:55,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-01 16:06:55,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 609 transitions. [2020-12-01 16:06:55,745 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 609 transitions. Word has length 89 [2020-12-01 16:06:55,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:55,746 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 609 transitions. [2020-12-01 16:06:55,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:55,746 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 609 transitions. [2020-12-01 16:06:55,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-01 16:06:55,747 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:55,748 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-12-01 16:06:55,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-01 16:06:55,748 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:55,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:55,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1591319919, now seen corresponding path program 1 times [2020-12-01 16:06:55,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:55,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588672387] [2020-12-01 16:06:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:55,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588672387] [2020-12-01 16:06:55,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:55,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:55,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519297048] [2020-12-01 16:06:55,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:55,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:55,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:55,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:55,829 INFO L87 Difference]: Start difference. First operand 418 states and 609 transitions. Second operand 4 states. [2020-12-01 16:06:56,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:56,449 INFO L93 Difference]: Finished difference Result 916 states and 1335 transitions. [2020-12-01 16:06:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:56,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-12-01 16:06:56,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:56,453 INFO L225 Difference]: With dead ends: 916 [2020-12-01 16:06:56,453 INFO L226 Difference]: Without dead ends: 508 [2020-12-01 16:06:56,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:56,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-12-01 16:06:56,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 418. [2020-12-01 16:06:56,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-01 16:06:56,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 607 transitions. [2020-12-01 16:06:56,467 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 607 transitions. Word has length 90 [2020-12-01 16:06:56,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:56,467 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 607 transitions. [2020-12-01 16:06:56,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:56,468 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 607 transitions. [2020-12-01 16:06:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-01 16:06:56,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:56,469 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1] [2020-12-01 16:06:56,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-01 16:06:56,470 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:56,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:56,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1012220386, now seen corresponding path program 1 times [2020-12-01 16:06:56,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:56,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609967706] [2020-12-01 16:06:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:56,545 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:56,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609967706] [2020-12-01 16:06:56,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:56,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:56,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48313521] [2020-12-01 16:06:56,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:56,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:56,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:56,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:56,548 INFO L87 Difference]: Start difference. First operand 418 states and 607 transitions. Second operand 4 states. [2020-12-01 16:06:57,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:57,179 INFO L93 Difference]: Finished difference Result 916 states and 1331 transitions. [2020-12-01 16:06:57,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:57,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-12-01 16:06:57,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:57,183 INFO L225 Difference]: With dead ends: 916 [2020-12-01 16:06:57,183 INFO L226 Difference]: Without dead ends: 508 [2020-12-01 16:06:57,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:57,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-12-01 16:06:57,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 418. [2020-12-01 16:06:57,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-01 16:06:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 605 transitions. [2020-12-01 16:06:57,202 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 605 transitions. Word has length 90 [2020-12-01 16:06:57,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:57,203 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 605 transitions. [2020-12-01 16:06:57,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:57,203 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 605 transitions. [2020-12-01 16:06:57,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-01 16:06:57,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:57,205 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-12-01 16:06:57,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-01 16:06:57,205 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:57,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:57,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1343173425, now seen corresponding path program 1 times [2020-12-01 16:06:57,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:57,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012071999] [2020-12-01 16:06:57,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:57,313 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 16:06:57,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012071999] [2020-12-01 16:06:57,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:57,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:57,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645866308] [2020-12-01 16:06:57,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:57,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:57,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:57,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:57,317 INFO L87 Difference]: Start difference. First operand 418 states and 605 transitions. Second operand 4 states. [2020-12-01 16:06:57,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:57,774 INFO L93 Difference]: Finished difference Result 844 states and 1220 transitions. [2020-12-01 16:06:57,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:57,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-12-01 16:06:57,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:57,777 INFO L225 Difference]: With dead ends: 844 [2020-12-01 16:06:57,777 INFO L226 Difference]: Without dead ends: 436 [2020-12-01 16:06:57,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:57,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-12-01 16:06:57,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 418. [2020-12-01 16:06:57,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-01 16:06:57,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 603 transitions. [2020-12-01 16:06:57,792 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 603 transitions. Word has length 90 [2020-12-01 16:06:57,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:57,793 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 603 transitions. [2020-12-01 16:06:57,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:57,793 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 603 transitions. [2020-12-01 16:06:57,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-01 16:06:57,794 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:57,795 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1] [2020-12-01 16:06:57,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-01 16:06:57,795 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:57,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:57,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1260366880, now seen corresponding path program 1 times [2020-12-01 16:06:57,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:57,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964000338] [2020-12-01 16:06:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:57,853 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-01 16:06:57,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964000338] [2020-12-01 16:06:57,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:57,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:06:57,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532375316] [2020-12-01 16:06:57,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:06:57,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:57,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:06:57,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:06:57,858 INFO L87 Difference]: Start difference. First operand 418 states and 603 transitions. Second operand 3 states. [2020-12-01 16:06:57,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:57,970 INFO L93 Difference]: Finished difference Result 827 states and 1200 transitions. [2020-12-01 16:06:57,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:06:57,971 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-01 16:06:57,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:57,975 INFO L225 Difference]: With dead ends: 827 [2020-12-01 16:06:57,975 INFO L226 Difference]: Without dead ends: 570 [2020-12-01 16:06:57,977 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 [2020-12-01 16:06:57,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-12-01 16:06:57,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2020-12-01 16:06:57,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2020-12-01 16:06:57,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 820 transitions. [2020-12-01 16:06:57,993 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 820 transitions. Word has length 90 [2020-12-01 16:06:57,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:57,993 INFO L481 AbstractCegarLoop]: Abstraction has 570 states and 820 transitions. [2020-12-01 16:06:57,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:06:57,994 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 820 transitions. [2020-12-01 16:06:57,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-01 16:06:57,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:57,995 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:57,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-01 16:06:57,996 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:57,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:57,996 INFO L82 PathProgramCache]: Analyzing trace with hash -584407498, now seen corresponding path program 1 times [2020-12-01 16:06:57,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:57,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066248641] [2020-12-01 16:06:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:58,100 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-12-01 16:06:58,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066248641] [2020-12-01 16:06:58,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:58,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:06:58,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342135159] [2020-12-01 16:06:58,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:06:58,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:58,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:06:58,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:06:58,102 INFO L87 Difference]: Start difference. First operand 570 states and 820 transitions. Second operand 3 states. [2020-12-01 16:06:58,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:58,150 INFO L93 Difference]: Finished difference Result 725 states and 1045 transitions. [2020-12-01 16:06:58,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:06:58,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-01 16:06:58,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:58,155 INFO L225 Difference]: With dead ends: 725 [2020-12-01 16:06:58,155 INFO L226 Difference]: Without dead ends: 723 [2020-12-01 16:06:58,156 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 [2020-12-01 16:06:58,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-12-01 16:06:58,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2020-12-01 16:06:58,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-12-01 16:06:58,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1042 transitions. [2020-12-01 16:06:58,179 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1042 transitions. Word has length 92 [2020-12-01 16:06:58,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:58,180 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 1042 transitions. [2020-12-01 16:06:58,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:06:58,180 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1042 transitions. [2020-12-01 16:06:58,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-01 16:06:58,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:58,182 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 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] [2020-12-01 16:06:58,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-01 16:06:58,183 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:58,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:58,184 INFO L82 PathProgramCache]: Analyzing trace with hash -782701753, now seen corresponding path program 1 times [2020-12-01 16:06:58,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:58,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473730672] [2020-12-01 16:06:58,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:06:58,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473730672] [2020-12-01 16:06:58,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:58,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:06:58,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350873877] [2020-12-01 16:06:58,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:06:58,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:58,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:06:58,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:06:58,255 INFO L87 Difference]: Start difference. First operand 723 states and 1042 transitions. Second operand 3 states. [2020-12-01 16:06:58,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:58,287 INFO L93 Difference]: Finished difference Result 725 states and 1043 transitions. [2020-12-01 16:06:58,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:06:58,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-01 16:06:58,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:58,291 INFO L225 Difference]: With dead ends: 725 [2020-12-01 16:06:58,291 INFO L226 Difference]: Without dead ends: 723 [2020-12-01 16:06:58,292 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 [2020-12-01 16:06:58,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-12-01 16:06:58,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2020-12-01 16:06:58,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-12-01 16:06:58,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1041 transitions. [2020-12-01 16:06:58,316 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1041 transitions. Word has length 113 [2020-12-01 16:06:58,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:58,317 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 1041 transitions. [2020-12-01 16:06:58,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:06:58,317 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1041 transitions. [2020-12-01 16:06:58,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-01 16:06:58,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:58,319 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 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] [2020-12-01 16:06:58,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-01 16:06:58,320 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:58,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:58,320 INFO L82 PathProgramCache]: Analyzing trace with hash -698320702, now seen corresponding path program 1 times [2020-12-01 16:06:58,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:58,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112953246] [2020-12-01 16:06:58,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:06:58,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112953246] [2020-12-01 16:06:58,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:58,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:58,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497577649] [2020-12-01 16:06:58,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:58,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:58,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:58,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:58,440 INFO L87 Difference]: Start difference. First operand 723 states and 1041 transitions. Second operand 4 states. [2020-12-01 16:06:58,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:58,850 INFO L93 Difference]: Finished difference Result 1692 states and 2446 transitions. [2020-12-01 16:06:58,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:58,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-12-01 16:06:58,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:58,857 INFO L225 Difference]: With dead ends: 1692 [2020-12-01 16:06:58,857 INFO L226 Difference]: Without dead ends: 979 [2020-12-01 16:06:58,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:58,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2020-12-01 16:06:58,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 843. [2020-12-01 16:06:58,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2020-12-01 16:06:58,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1251 transitions. [2020-12-01 16:06:58,885 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1251 transitions. Word has length 115 [2020-12-01 16:06:58,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:58,886 INFO L481 AbstractCegarLoop]: Abstraction has 843 states and 1251 transitions. [2020-12-01 16:06:58,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:58,886 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1251 transitions. [2020-12-01 16:06:58,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-01 16:06:58,888 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:58,889 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2020-12-01 16:06:58,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-01 16:06:58,889 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:58,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:58,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1667253281, now seen corresponding path program 2 times [2020-12-01 16:06:58,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:58,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264527528] [2020-12-01 16:06:58,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:58,969 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:06:58,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264527528] [2020-12-01 16:06:58,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:58,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:58,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721145830] [2020-12-01 16:06:58,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:58,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:58,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:58,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:58,971 INFO L87 Difference]: Start difference. First operand 843 states and 1251 transitions. Second operand 4 states. [2020-12-01 16:06:59,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:59,409 INFO L93 Difference]: Finished difference Result 1807 states and 2646 transitions. [2020-12-01 16:06:59,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:59,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-12-01 16:06:59,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:59,415 INFO L225 Difference]: With dead ends: 1807 [2020-12-01 16:06:59,416 INFO L226 Difference]: Without dead ends: 974 [2020-12-01 16:06:59,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:59,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2020-12-01 16:06:59,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 843. [2020-12-01 16:06:59,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2020-12-01 16:06:59,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1246 transitions. [2020-12-01 16:06:59,442 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1246 transitions. Word has length 130 [2020-12-01 16:06:59,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:59,442 INFO L481 AbstractCegarLoop]: Abstraction has 843 states and 1246 transitions. [2020-12-01 16:06:59,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:59,443 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1246 transitions. [2020-12-01 16:06:59,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-01 16:06:59,445 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:59,445 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2020-12-01 16:06:59,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-01 16:06:59,446 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:59,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:59,446 INFO L82 PathProgramCache]: Analyzing trace with hash 919227327, now seen corresponding path program 1 times [2020-12-01 16:06:59,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:59,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635630574] [2020-12-01 16:06:59,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:59,522 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:06:59,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635630574] [2020-12-01 16:06:59,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:59,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:06:59,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117620003] [2020-12-01 16:06:59,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:59,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:59,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:59,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:59,525 INFO L87 Difference]: Start difference. First operand 843 states and 1246 transitions. Second operand 4 states. [2020-12-01 16:06:59,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:59,945 INFO L93 Difference]: Finished difference Result 1807 states and 2636 transitions. [2020-12-01 16:06:59,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:06:59,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-12-01 16:06:59,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:59,951 INFO L225 Difference]: With dead ends: 1807 [2020-12-01 16:06:59,952 INFO L226 Difference]: Without dead ends: 974 [2020-12-01 16:06:59,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:59,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2020-12-01 16:06:59,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 843. [2020-12-01 16:06:59,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2020-12-01 16:06:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1241 transitions. [2020-12-01 16:06:59,978 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1241 transitions. Word has length 130 [2020-12-01 16:06:59,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:59,979 INFO L481 AbstractCegarLoop]: Abstraction has 843 states and 1241 transitions. [2020-12-01 16:06:59,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:59,979 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1241 transitions. [2020-12-01 16:06:59,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-01 16:06:59,981 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:59,982 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:59,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-01 16:06:59,982 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:06:59,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:59,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1537947938, now seen corresponding path program 1 times [2020-12-01 16:06:59,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:59,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103339597] [2020-12-01 16:06:59,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:07:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:07:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-12-01 16:07:00,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103339597] [2020-12-01 16:07:00,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:07:00,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:07:00,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911670481] [2020-12-01 16:07:00,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:07:00,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:07:00,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:07:00,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:07:00,081 INFO L87 Difference]: Start difference. First operand 843 states and 1241 transitions. Second operand 4 states. [2020-12-01 16:07:00,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:07:00,408 INFO L93 Difference]: Finished difference Result 1639 states and 2418 transitions. [2020-12-01 16:07:00,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:07:00,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-12-01 16:07:00,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:07:00,413 INFO L225 Difference]: With dead ends: 1639 [2020-12-01 16:07:00,413 INFO L226 Difference]: Without dead ends: 981 [2020-12-01 16:07:00,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:07:00,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-12-01 16:07:00,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 915. [2020-12-01 16:07:00,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 915 states. [2020-12-01 16:07:00,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1361 transitions. [2020-12-01 16:07:00,441 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1361 transitions. Word has length 130 [2020-12-01 16:07:00,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:07:00,441 INFO L481 AbstractCegarLoop]: Abstraction has 915 states and 1361 transitions. [2020-12-01 16:07:00,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:07:00,442 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1361 transitions. [2020-12-01 16:07:00,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-01 16:07:00,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:07:00,445 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 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] [2020-12-01 16:07:00,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-01 16:07:00,445 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:07:00,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:07:00,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1834884522, now seen corresponding path program 1 times [2020-12-01 16:07:00,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:07:00,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142275578] [2020-12-01 16:07:00,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:07:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:07:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:07:00,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142275578] [2020-12-01 16:07:00,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:07:00,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:07:00,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629047579] [2020-12-01 16:07:00,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:07:00,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:07:00,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:07:00,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:07:00,525 INFO L87 Difference]: Start difference. First operand 915 states and 1361 transitions. Second operand 4 states. [2020-12-01 16:07:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:07:01,041 INFO L93 Difference]: Finished difference Result 1951 states and 2866 transitions. [2020-12-01 16:07:01,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:07:01,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-01 16:07:01,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:07:01,048 INFO L225 Difference]: With dead ends: 1951 [2020-12-01 16:07:01,048 INFO L226 Difference]: Without dead ends: 1046 [2020-12-01 16:07:01,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:07:01,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-12-01 16:07:01,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 915. [2020-12-01 16:07:01,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 915 states. [2020-12-01 16:07:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1356 transitions. [2020-12-01 16:07:01,078 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1356 transitions. Word has length 131 [2020-12-01 16:07:01,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:07:01,079 INFO L481 AbstractCegarLoop]: Abstraction has 915 states and 1356 transitions. [2020-12-01 16:07:01,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:07:01,079 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1356 transitions. [2020-12-01 16:07:01,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-01 16:07:01,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:07:01,082 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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] [2020-12-01 16:07:01,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-01 16:07:01,083 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:07:01,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:07:01,083 INFO L82 PathProgramCache]: Analyzing trace with hash 653511332, now seen corresponding path program 1 times [2020-12-01 16:07:01,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:07:01,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194661031] [2020-12-01 16:07:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:07:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:07:01,171 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:07:01,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194661031] [2020-12-01 16:07:01,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:07:01,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:07:01,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392388176] [2020-12-01 16:07:01,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:07:01,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:07:01,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:07:01,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:07:01,174 INFO L87 Difference]: Start difference. First operand 915 states and 1356 transitions. Second operand 4 states. [2020-12-01 16:07:01,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:07:01,621 INFO L93 Difference]: Finished difference Result 1951 states and 2856 transitions. [2020-12-01 16:07:01,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:07:01,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-12-01 16:07:01,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:07:01,628 INFO L225 Difference]: With dead ends: 1951 [2020-12-01 16:07:01,628 INFO L226 Difference]: Without dead ends: 1046 [2020-12-01 16:07:01,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:07:01,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-12-01 16:07:01,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 915. [2020-12-01 16:07:01,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 915 states. [2020-12-01 16:07:01,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1351 transitions. [2020-12-01 16:07:01,677 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1351 transitions. Word has length 132 [2020-12-01 16:07:01,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:07:01,677 INFO L481 AbstractCegarLoop]: Abstraction has 915 states and 1351 transitions. [2020-12-01 16:07:01,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:07:01,677 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1351 transitions. [2020-12-01 16:07:01,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-01 16:07:01,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:07:01,680 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 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] [2020-12-01 16:07:01,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-01 16:07:01,681 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:07:01,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:07:01,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1844078565, now seen corresponding path program 1 times [2020-12-01 16:07:01,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:07:01,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875414129] [2020-12-01 16:07:01,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:07:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:07:01,759 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:07:01,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875414129] [2020-12-01 16:07:01,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:07:01,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:07:01,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670793204] [2020-12-01 16:07:01,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:07:01,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:07:01,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:07:01,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:07:01,762 INFO L87 Difference]: Start difference. First operand 915 states and 1351 transitions. Second operand 4 states. [2020-12-01 16:07:02,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:07:02,273 INFO L93 Difference]: Finished difference Result 1906 states and 2791 transitions. [2020-12-01 16:07:02,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:07:02,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-12-01 16:07:02,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:07:02,279 INFO L225 Difference]: With dead ends: 1906 [2020-12-01 16:07:02,279 INFO L226 Difference]: Without dead ends: 1001 [2020-12-01 16:07:02,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:07:02,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-12-01 16:07:02,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 915. [2020-12-01 16:07:02,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 915 states. [2020-12-01 16:07:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1346 transitions. [2020-12-01 16:07:02,305 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1346 transitions. Word has length 133 [2020-12-01 16:07:02,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:07:02,305 INFO L481 AbstractCegarLoop]: Abstraction has 915 states and 1346 transitions. [2020-12-01 16:07:02,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:07:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1346 transitions. [2020-12-01 16:07:02,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-01 16:07:02,308 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:07:02,308 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:07:02,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-01 16:07:02,308 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:07:02,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:07:02,309 INFO L82 PathProgramCache]: Analyzing trace with hash 487188268, now seen corresponding path program 1 times [2020-12-01 16:07:02,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:07:02,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518728046] [2020-12-01 16:07:02,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:07:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:07:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-12-01 16:07:02,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518728046] [2020-12-01 16:07:02,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:07:02,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:07:02,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240862006] [2020-12-01 16:07:02,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:07:02,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:07:02,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:07:02,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:07:02,423 INFO L87 Difference]: Start difference. First operand 915 states and 1346 transitions. Second operand 4 states. [2020-12-01 16:07:02,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:07:02,884 INFO L93 Difference]: Finished difference Result 2051 states and 3021 transitions. [2020-12-01 16:07:02,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:07:02,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-12-01 16:07:02,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:07:02,894 INFO L225 Difference]: With dead ends: 2051 [2020-12-01 16:07:02,895 INFO L226 Difference]: Without dead ends: 1146 [2020-12-01 16:07:02,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:07:02,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2020-12-01 16:07:02,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1025. [2020-12-01 16:07:02,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2020-12-01 16:07:02,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1536 transitions. [2020-12-01 16:07:02,924 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1536 transitions. Word has length 133 [2020-12-01 16:07:02,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:07:02,924 INFO L481 AbstractCegarLoop]: Abstraction has 1025 states and 1536 transitions. [2020-12-01 16:07:02,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:07:02,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1536 transitions. [2020-12-01 16:07:02,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-01 16:07:02,927 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:07:02,927 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 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] [2020-12-01 16:07:02,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-01 16:07:02,927 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:07:02,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:07:02,928 INFO L82 PathProgramCache]: Analyzing trace with hash -272550210, now seen corresponding path program 1 times [2020-12-01 16:07:02,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:07:02,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849691528] [2020-12-01 16:07:02,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:07:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:07:03,121 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:07:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:07:03,309 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:07:03,418 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 16:07:03,418 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 16:07:03,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-01 16:07:03,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 04:07:03 BoogieIcfgContainer [2020-12-01 16:07:03,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 16:07:03,569 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 16:07:03,569 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 16:07:03,570 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 16:07:03,570 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:06:41" (3/4) ... [2020-12-01 16:07:03,573 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 16:07:03,573 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 16:07:03,575 INFO L168 Benchmark]: Toolchain (without parser) took 24818.49 ms. Allocated memory was 86.0 MB in the beginning and 255.9 MB in the end (delta: 169.9 MB). Free memory was 52.2 MB in the beginning and 212.6 MB in the end (delta: -160.4 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-12-01 16:07:03,575 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory was 45.1 MB in the beginning and 45.0 MB in the end (delta: 41.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:07:03,576 INFO L168 Benchmark]: CACSL2BoogieTranslator took 740.17 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 52.0 MB in the beginning and 69.9 MB in the end (delta: -17.9 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2020-12-01 16:07:03,576 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.29 ms. Allocated memory is still 111.1 MB. Free memory was 69.9 MB in the beginning and 65.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-01 16:07:03,576 INFO L168 Benchmark]: Boogie Preprocessor took 112.78 ms. Allocated memory is still 111.1 MB. Free memory was 65.2 MB in the beginning and 58.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-01 16:07:03,577 INFO L168 Benchmark]: RCFGBuilder took 1404.18 ms. Allocated memory is still 111.1 MB. Free memory was 58.9 MB in the beginning and 56.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 36.5 MB. Max. memory is 16.1 GB. [2020-12-01 16:07:03,577 INFO L168 Benchmark]: TraceAbstraction took 22456.51 ms. Allocated memory was 111.1 MB in the beginning and 255.9 MB in the end (delta: 144.7 MB). Free memory was 55.9 MB in the beginning and 213.6 MB in the end (delta: -157.8 MB). Peak memory consumption was 128.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:07:03,578 INFO L168 Benchmark]: Witness Printer took 3.94 ms. Allocated memory is still 255.9 MB. Free memory was 213.6 MB in the beginning and 212.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:07:03,580 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory was 45.1 MB in the beginning and 45.0 MB in the end (delta: 41.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 740.17 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 52.0 MB in the beginning and 69.9 MB in the end (delta: -17.9 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.29 ms. Allocated memory is still 111.1 MB. Free memory was 69.9 MB in the beginning and 65.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 112.78 ms. Allocated memory is still 111.1 MB. Free memory was 65.2 MB in the beginning and 58.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1404.18 ms. Allocated memory is still 111.1 MB. Free memory was 58.9 MB in the beginning and 56.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 36.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22456.51 ms. Allocated memory was 111.1 MB in the beginning and 255.9 MB in the end (delta: 144.7 MB). Free memory was 55.9 MB in the beginning and 213.6 MB in the end (delta: -157.8 MB). Peak memory consumption was 128.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.94 ms. Allocated memory is still 255.9 MB. Free memory was 213.6 MB in the beginning and 212.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 1331. Possible FailurePath: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_client_data ; VAL [init=1, SSLv3_client_data={5:0}] [L1067] SSL *s = (SSL*)malloc(sizeof(SSL)) ; [L1071] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1072] s->ctx = malloc(sizeof(SSL_CTX)) [L1073] s->session = malloc(sizeof(SSL_SESSION)) [L1074] s->state = 12292 [L1075] s->version = __VERIFIER_nondet_int() [L1082] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1083] unsigned long tmp ; [L1084] unsigned long l ; [L1085] long num1 ; [L1086] void (*cb)() ; [L1087] int ret ; [L1088] int new_state ; [L1089] int state ; [L1090] int skip ; [L1091] int tmp___1 = __VERIFIER_nondet_int() ; [L1092] int tmp___2 = __VERIFIER_nondet_int() ; [L1093] int tmp___3 ; [L1094] int tmp___4 ; [L1095] int tmp___5 ; [L1096] int tmp___6 ; [L1097] int tmp___7 ; [L1098] int tmp___8 ; [L1099] long tmp___9 ; [L1101] int blastFlag ; [L1104] blastFlag = 0 [L1105] s->hit=__VERIFIER_nondet_int () [L1106] s->state = 12292 [L1107] tmp = __VERIFIER_nondet_int() [L1108] cb = (void (*)())((void *)0) [L1109] ret = -1 [L1110] skip = 0 [L1111] EXPR s->info_callback VAL [init=1, SSLv3_client_data={5:0}] [L1111] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1112] EXPR s->info_callback [L1112] cb = s->info_callback [L1120] EXPR s->in_handshake [L1120] s->in_handshake += 1 [L1121] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_client_data={5:0}] [L1131] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1133] EXPR s->state [L1133] state = s->state [L1134] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1134] COND TRUE s->state == 12292 [L1237] s->new_session = 1 [L1238] s->state = 4096 [L1239] EXPR s->ctx [L1239] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1239] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1244] s->server = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1245] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [init=1, SSLv3_client_data={5:0}] [L1250] EXPR s->version VAL [init=1, SSLv3_client_data={5:0}] [L1250] COND FALSE !((s->version & 65280) != 768) [L1256] s->type = 4096 [L1257] EXPR s->init_buf VAL [init=1, SSLv3_client_data={5:0}] [L1257] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1269] tmp___4 = __VERIFIER_nondet_int() [L1270] COND FALSE !(! tmp___4) [L1276] tmp___5 = __VERIFIER_nondet_int() [L1277] COND FALSE !(! tmp___5) [L1283] s->state = 4368 [L1284] EXPR s->ctx [L1284] EXPR (s->ctx)->stats.sess_connect [L1284] (s->ctx)->stats.sess_connect += 1 [L1285] s->init_num = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1605] EXPR s->s3 [L1605] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1605] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1634] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1131] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1133] EXPR s->state [L1133] state = s->state [L1134] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1134] COND FALSE !(s->state == 12292) [L1137] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1137] COND FALSE !(s->state == 16384) [L1140] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1140] COND FALSE !(s->state == 4096) [L1143] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1143] COND FALSE !(s->state == 20480) [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1146] COND FALSE !(s->state == 4099) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1149] COND TRUE s->state == 4368 [L1289] s->shutdown = 0 [L1290] ret = __VERIFIER_nondet_int() [L1291] COND TRUE blastFlag == 0 [L1292] blastFlag = 1 VAL [init=1, SSLv3_client_data={5:0}] [L1296] COND FALSE !(ret <= 0) [L1301] s->state = 4384 [L1302] s->init_num = 0 [L1303] EXPR s->bbio [L1303] EXPR s->wbio VAL [init=1, SSLv3_client_data={5:0}] [L1303] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1605] EXPR s->s3 [L1605] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1605] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1634] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1131] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1133] EXPR s->state [L1133] state = s->state [L1134] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1134] COND FALSE !(s->state == 12292) [L1137] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1137] COND FALSE !(s->state == 16384) [L1140] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1140] COND FALSE !(s->state == 4096) [L1143] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1143] COND FALSE !(s->state == 20480) [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1146] COND FALSE !(s->state == 4099) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1149] COND FALSE !(s->state == 4368) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1152] COND FALSE !(s->state == 4369) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1155] COND TRUE s->state == 4384 [L1311] ret = __VERIFIER_nondet_int() [L1312] COND TRUE blastFlag == 1 [L1313] blastFlag = 2 VAL [init=1, SSLv3_client_data={5:0}] [L1317] COND FALSE !(ret <= 0) [L1322] s->hit VAL [init=1, SSLv3_client_data={5:0}] [L1322] COND FALSE !(s->hit) [L1325] s->state = 4400 VAL [init=1, SSLv3_client_data={5:0}] [L1327] s->init_num = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1605] EXPR s->s3 [L1605] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1605] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1634] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1131] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1133] EXPR s->state [L1133] state = s->state [L1134] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1134] COND FALSE !(s->state == 12292) [L1137] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1137] COND FALSE !(s->state == 16384) [L1140] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1140] COND FALSE !(s->state == 4096) [L1143] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1143] COND FALSE !(s->state == 20480) [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1146] COND FALSE !(s->state == 4099) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1149] COND FALSE !(s->state == 4368) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1152] COND FALSE !(s->state == 4369) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1155] COND FALSE !(s->state == 4384) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1158] COND FALSE !(s->state == 4385) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1161] COND TRUE s->state == 4400 [L1331] EXPR s->s3 [L1331] EXPR (s->s3)->tmp.new_cipher [L1331] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_client_data={5:0}] [L1331] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1334] ret = __VERIFIER_nondet_int() [L1335] COND TRUE blastFlag == 2 [L1336] blastFlag = 3 VAL [init=1, SSLv3_client_data={5:0}] [L1340] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_client_data={5:0}] [L1346] s->state = 4416 [L1347] s->init_num = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1605] EXPR s->s3 [L1605] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1605] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1634] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1131] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1133] EXPR s->state [L1133] state = s->state [L1134] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1134] COND FALSE !(s->state == 12292) [L1137] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1137] COND FALSE !(s->state == 16384) [L1140] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1140] COND FALSE !(s->state == 4096) [L1143] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1143] COND FALSE !(s->state == 20480) [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1146] COND FALSE !(s->state == 4099) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1149] COND FALSE !(s->state == 4368) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1152] COND FALSE !(s->state == 4369) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1155] COND FALSE !(s->state == 4384) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1158] COND FALSE !(s->state == 4385) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1161] COND FALSE !(s->state == 4400) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1164] COND FALSE !(s->state == 4401) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1167] COND TRUE s->state == 4416 [L1351] ret = __VERIFIER_nondet_int() [L1352] COND TRUE blastFlag == 3 [L1353] blastFlag = 4 VAL [init=1, SSLv3_client_data={5:0}] [L1357] COND FALSE !(ret <= 0) [L1362] s->state = 4432 [L1363] s->init_num = 0 [L1364] tmp___6 = __VERIFIER_nondet_int() [L1365] COND FALSE !(! tmp___6) VAL [init=1, SSLv3_client_data={5:0}] [L1605] EXPR s->s3 [L1605] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1605] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1634] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1131] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1133] EXPR s->state [L1133] state = s->state [L1134] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1134] COND FALSE !(s->state == 12292) [L1137] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1137] COND FALSE !(s->state == 16384) [L1140] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1140] COND FALSE !(s->state == 4096) [L1143] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1143] COND FALSE !(s->state == 20480) [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1146] COND FALSE !(s->state == 4099) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1149] COND FALSE !(s->state == 4368) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1152] COND FALSE !(s->state == 4369) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1155] COND FALSE !(s->state == 4384) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1158] COND FALSE !(s->state == 4385) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1161] COND FALSE !(s->state == 4400) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1164] COND FALSE !(s->state == 4401) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1167] COND FALSE !(s->state == 4416) [L1170] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1170] COND FALSE !(s->state == 4417) [L1173] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1173] COND TRUE s->state == 4432 [L1374] ret = __VERIFIER_nondet_int() [L1375] COND FALSE !(blastFlag == 5) VAL [init=1, SSLv3_client_data={5:0}] [L1380] COND FALSE !(ret <= 0) [L1385] s->state = 4448 [L1386] s->init_num = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1605] EXPR s->s3 [L1605] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1605] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1634] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1131] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1133] EXPR s->state [L1133] state = s->state [L1134] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1134] COND FALSE !(s->state == 12292) [L1137] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1137] COND FALSE !(s->state == 16384) [L1140] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1140] COND FALSE !(s->state == 4096) [L1143] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1143] COND FALSE !(s->state == 20480) [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1146] COND FALSE !(s->state == 4099) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1149] COND FALSE !(s->state == 4368) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1152] COND FALSE !(s->state == 4369) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1155] COND FALSE !(s->state == 4384) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1158] COND FALSE !(s->state == 4385) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1161] COND FALSE !(s->state == 4400) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1164] COND FALSE !(s->state == 4401) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1167] COND FALSE !(s->state == 4416) [L1170] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1170] COND FALSE !(s->state == 4417) [L1173] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1173] COND FALSE !(s->state == 4432) [L1176] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1176] COND FALSE !(s->state == 4433) [L1179] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1179] COND TRUE s->state == 4448 [L1390] ret = __VERIFIER_nondet_int() [L1391] COND TRUE blastFlag == 4 VAL [init=1, SSLv3_client_data={5:0}] [L3] __assert_fail("0", "s3_clnt.blast.01.i.cil-2.c", 3, "reach_error") VAL [init=1, SSLv3_client_data={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.2s, OverallIterations: 35, TraceHistogramMax: 7, AutomataDifference: 16.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7362 SDtfs, 2436 SDslu, 9320 SDs, 0 SdLazy, 5220 SolverSat, 199 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 68 SyntacticMatches, 21 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1025occurred in iteration=34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 34 MinimizatonAttempts, 2600 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 3271 NumberOfCodeBlocks, 3271 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 3100 ConstructedInterpolants, 0 QuantifiedInterpolants, 675721 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 3328/3328 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-69874e2 [2020-12-01 16:07:06,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 16:07:06,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 16:07:06,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 16:07:06,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 16:07:06,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 16:07:06,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 16:07:06,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 16:07:06,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 16:07:06,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 16:07:06,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 16:07:06,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 16:07:06,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 16:07:06,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 16:07:06,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 16:07:06,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 16:07:06,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 16:07:06,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 16:07:06,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 16:07:06,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 16:07:06,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 16:07:06,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 16:07:06,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 16:07:06,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 16:07:06,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 16:07:06,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 16:07:06,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 16:07:06,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 16:07:06,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 16:07:06,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 16:07:06,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 16:07:06,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 16:07:06,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 16:07:06,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 16:07:06,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 16:07:06,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 16:07:06,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 16:07:06,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 16:07:06,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 16:07:06,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 16:07:06,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 16:07:06,219 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 16:07:06,243 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 16:07:06,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 16:07:06,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 16:07:06,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 16:07:06,246 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 16:07:06,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 16:07:06,247 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 16:07:06,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 16:07:06,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 16:07:06,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 16:07:06,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 16:07:06,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 16:07:06,248 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 16:07:06,249 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 16:07:06,249 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 16:07:06,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 16:07:06,250 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 16:07:06,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 16:07:06,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 16:07:06,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 16:07:06,251 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 16:07:06,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 16:07:06,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 16:07:06,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 16:07:06,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 16:07:06,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 16:07:06,253 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 16:07:06,253 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 16:07:06,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 16:07:06,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 16:07:06,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 16:07:06,254 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 782042467f0cb3a7476d3c48a134dfd084f9a32e [2020-12-01 16:07:06,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 16:07:06,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 16:07:06,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 16:07:06,645 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 16:07:06,646 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 16:07:06,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/../../sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c [2020-12-01 16:07:06,718 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/data/d924eb980/9591467e153149aeb23a1cdb39cb3709/FLAGb1d8ffd94 [2020-12-01 16:07:07,435 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 16:07:07,439 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c [2020-12-01 16:07:07,469 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/data/d924eb980/9591467e153149aeb23a1cdb39cb3709/FLAGb1d8ffd94 [2020-12-01 16:07:07,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/data/d924eb980/9591467e153149aeb23a1cdb39cb3709 [2020-12-01 16:07:07,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 16:07:07,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 16:07:07,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 16:07:07,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 16:07:07,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 16:07:07,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:07:07" (1/1) ... [2020-12-01 16:07:07,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12ed71ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:07:07, skipping insertion in model container [2020-12-01 16:07:07,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:07:07" (1/1) ... [2020-12-01 16:07:07,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 16:07:07,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 16:07:08,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:07:08,193 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 16:07:08,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:07:08,374 INFO L208 MainTranslator]: Completed translation [2020-12-01 16:07:08,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:07:08 WrapperNode [2020-12-01 16:07:08,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 16:07:08,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 16:07:08,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 16:07:08,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 16:07:08,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:07:08" (1/1) ... [2020-12-01 16:07:08,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:07:08" (1/1) ... [2020-12-01 16:07:08,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 16:07:08,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 16:07:08,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 16:07:08,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 16:07:08,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:07:08" (1/1) ... [2020-12-01 16:07:08,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:07:08" (1/1) ... [2020-12-01 16:07:08,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:07:08" (1/1) ... [2020-12-01 16:07:08,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:07:08" (1/1) ... [2020-12-01 16:07:08,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:07:08" (1/1) ... [2020-12-01 16:07:08,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:07:08" (1/1) ... [2020-12-01 16:07:08,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:07:08" (1/1) ... [2020-12-01 16:07:08,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 16:07:08,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 16:07:08,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 16:07:08,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 16:07:08,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:07:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/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 [2020-12-01 16:07:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 16:07:08,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 16:07:08,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 16:07:08,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 16:07:08,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 16:07:08,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 16:07:08,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 16:07:08,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 16:07:08,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-01 16:07:09,018 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-01 16:07:13,057 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-12-01 16:07:13,057 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-12-01 16:07:13,066 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 16:07:13,066 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-01 16:07:13,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:07:13 BoogieIcfgContainer [2020-12-01 16:07:13,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 16:07:13,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 16:07:13,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 16:07:13,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 16:07:13,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 04:07:07" (1/3) ... [2020-12-01 16:07:13,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da03cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:07:13, skipping insertion in model container [2020-12-01 16:07:13,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:07:08" (2/3) ... [2020-12-01 16:07:13,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da03cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:07:13, skipping insertion in model container [2020-12-01 16:07:13,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:07:13" (3/3) ... [2020-12-01 16:07:13,075 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.01.i.cil-2.c [2020-12-01 16:07:13,088 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 16:07:13,092 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 16:07:13,102 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 16:07:13,125 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 16:07:13,126 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 16:07:13,126 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 16:07:13,126 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 16:07:13,126 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 16:07:13,127 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 16:07:13,127 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 16:07:13,127 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 16:07:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-12-01 16:07:13,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 16:07:13,148 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:07:13,149 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] [2020-12-01 16:07:13,150 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:07:13,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:07:13,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1457703967, now seen corresponding path program 1 times [2020-12-01 16:07:13,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:07:13,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756059261] [2020-12-01 16:07:13,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-01 16:07:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:07:13,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 16:07:13,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:07:13,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:07:13,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:07:13,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:07:13,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756059261] [2020-12-01 16:07:13,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:07:13,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-01 16:07:13,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512342669] [2020-12-01 16:07:13,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:07:13,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:07:13,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:07:13,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:07:13,606 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 4 states. [2020-12-01 16:07:13,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:07:13,779 INFO L93 Difference]: Finished difference Result 376 states and 627 transitions. [2020-12-01 16:07:13,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:07:13,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-12-01 16:07:13,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:07:13,799 INFO L225 Difference]: With dead ends: 376 [2020-12-01 16:07:13,799 INFO L226 Difference]: Without dead ends: 217 [2020-12-01 16:07:13,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:07:13,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-12-01 16:07:13,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-12-01 16:07:13,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-12-01 16:07:13,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 320 transitions. [2020-12-01 16:07:13,863 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 320 transitions. Word has length 24 [2020-12-01 16:07:13,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:07:13,863 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 320 transitions. [2020-12-01 16:07:13,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:07:13,864 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 320 transitions. [2020-12-01 16:07:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-01 16:07:13,867 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:07:13,867 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-01 16:07:14,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 16:07:14,077 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:07:14,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:07:14,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1495258694, now seen corresponding path program 1 times [2020-12-01 16:07:14,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:07:14,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291083245] [2020-12-01 16:07:14,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-01 16:07:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:07:14,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 16:07:14,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:07:14,400 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:07:14,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:07:14,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:07:14,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291083245] [2020-12-01 16:07:14,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:07:14,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-01 16:07:14,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543755141] [2020-12-01 16:07:14,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:07:14,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:07:14,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:07:14,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:07:14,484 INFO L87 Difference]: Start difference. First operand 217 states and 320 transitions. Second operand 4 states. [2020-12-01 16:07:15,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:07:15,214 INFO L93 Difference]: Finished difference Result 528 states and 787 transitions. [2020-12-01 16:07:15,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:07:15,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-12-01 16:07:15,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:07:15,221 INFO L225 Difference]: With dead ends: 528 [2020-12-01 16:07:15,222 INFO L226 Difference]: Without dead ends: 421 [2020-12-01 16:07:15,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:07:15,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-12-01 16:07:15,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2020-12-01 16:07:15,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-12-01 16:07:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 622 transitions. [2020-12-01 16:07:15,290 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 622 transitions. Word has length 41 [2020-12-01 16:07:15,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:07:15,293 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 622 transitions. [2020-12-01 16:07:15,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:07:15,293 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 622 transitions. [2020-12-01 16:07:15,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-01 16:07:15,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:07:15,304 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2020-12-01 16:07:15,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 16:07:15,524 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:07:15,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:07:15,525 INFO L82 PathProgramCache]: Analyzing trace with hash 924360661, now seen corresponding path program 1 times [2020-12-01 16:07:15,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:07:15,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242525541] [2020-12-01 16:07:15,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-01 16:07:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:07:15,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 16:07:15,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:07:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-01 16:07:15,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:07:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-01 16:07:15,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242525541] [2020-12-01 16:07:15,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:07:15,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-01 16:07:15,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520569790] [2020-12-01 16:07:15,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:07:15,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:07:15,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:07:15,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:07:15,977 INFO L87 Difference]: Start difference. First operand 421 states and 622 transitions. Second operand 4 states. [2020-12-01 16:07:17,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:07:17,850 INFO L93 Difference]: Finished difference Result 939 states and 1394 transitions. [2020-12-01 16:07:17,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:07:17,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-12-01 16:07:17,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:07:17,855 INFO L225 Difference]: With dead ends: 939 [2020-12-01 16:07:17,855 INFO L226 Difference]: Without dead ends: 628 [2020-12-01 16:07:17,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:07:17,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-12-01 16:07:17,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2020-12-01 16:07:17,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-12-01 16:07:17,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 927 transitions. [2020-12-01 16:07:17,902 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 927 transitions. Word has length 80 [2020-12-01 16:07:17,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:07:17,904 INFO L481 AbstractCegarLoop]: Abstraction has 628 states and 927 transitions. [2020-12-01 16:07:17,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:07:17,904 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 927 transitions. [2020-12-01 16:07:17,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-01 16:07:17,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:07:17,907 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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, 1] [2020-12-01 16:07:18,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 16:07:18,123 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:07:18,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:07:18,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1855651051, now seen corresponding path program 1 times [2020-12-01 16:07:18,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:07:18,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868799217] [2020-12-01 16:07:18,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-01 16:07:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:07:18,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 16:07:18,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:07:18,826 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-12-01 16:07:18,827 INFO L348 Elim1Store]: treesize reduction 122, result has 48.5 percent of original size [2020-12-01 16:07:18,827 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 124 [2020-12-01 16:07:18,841 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:19,093 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-12-01 16:07:19,094 INFO L625 ElimStorePlain]: treesize reduction 18, result has 85.0 percent of original size [2020-12-01 16:07:19,108 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 16:07:19,113 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 16:07:19,122 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 16:07:19,137 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-01 16:07:19,140 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 16:07:19,151 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-01 16:07:19,154 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 16:07:19,166 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 16:07:19,168 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 16:07:19,169 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 16:07:19,177 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-01 16:07:19,180 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 16:07:19,189 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-01 16:07:19,192 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 16:07:19,200 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-01 16:07:19,201 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:44, output treesize:83 [2020-12-01 16:07:19,204 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 16:07:19,205 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:07:19,206 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-01 16:07:19,208 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 16:07:19,210 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-01 16:07:19,212 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 16:07:19,218 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 16:07:19,219 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 16:07:19,224 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:07:19,225 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-01 16:07:19,227 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 16:07:19,228 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-01 16:07:19,230 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 16:07:19,301 INFO L348 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2020-12-01 16:07:19,301 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 26 [2020-12-01 16:07:19,304 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:19,309 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:19,309 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:19,310 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:11 [2020-12-01 16:07:19,326 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-12-01 16:07:19,328 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:19,331 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:19,331 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:19,331 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:3 [2020-12-01 16:07:19,411 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-12-01 16:07:19,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:07:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-12-01 16:07:19,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868799217] [2020-12-01 16:07:19,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:07:19,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-12-01 16:07:19,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698909175] [2020-12-01 16:07:19,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:07:19,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:07:19,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:07:19,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:07:19,516 INFO L87 Difference]: Start difference. First operand 628 states and 927 transitions. Second operand 4 states. [2020-12-01 16:07:22,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:07:22,747 INFO L93 Difference]: Finished difference Result 1253 states and 1848 transitions. [2020-12-01 16:07:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:07:22,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-12-01 16:07:22,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:07:22,753 INFO L225 Difference]: With dead ends: 1253 [2020-12-01 16:07:22,753 INFO L226 Difference]: Without dead ends: 632 [2020-12-01 16:07:22,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:07:22,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2020-12-01 16:07:22,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 631. [2020-12-01 16:07:22,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2020-12-01 16:07:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 930 transitions. [2020-12-01 16:07:22,787 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 930 transitions. Word has length 100 [2020-12-01 16:07:22,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:07:22,787 INFO L481 AbstractCegarLoop]: Abstraction has 631 states and 930 transitions. [2020-12-01 16:07:22,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:07:22,787 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 930 transitions. [2020-12-01 16:07:22,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-01 16:07:22,790 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:07:22,790 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 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] [2020-12-01 16:07:23,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-01 16:07:23,011 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:07:23,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:07:23,012 INFO L82 PathProgramCache]: Analyzing trace with hash 517833024, now seen corresponding path program 1 times [2020-12-01 16:07:23,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:07:23,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120758895] [2020-12-01 16:07:23,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-01 16:07:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:07:23,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 16:07:23,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:07:23,486 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-01 16:07:23,487 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:23,491 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:23,492 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:23,492 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-12-01 16:07:23,531 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-12-01 16:07:23,531 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2020-12-01 16:07:23,534 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:23,547 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:23,548 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:23,548 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-01 16:07:23,607 INFO L348 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-12-01 16:07:23,607 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2020-12-01 16:07:23,609 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:23,612 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:23,613 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:23,613 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-12-01 16:07:23,684 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-01 16:07:23,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:07:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-01 16:07:23,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120758895] [2020-12-01 16:07:23,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:07:23,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2020-12-01 16:07:23,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689245651] [2020-12-01 16:07:23,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 16:07:23,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:07:23,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 16:07:23,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-01 16:07:23,851 INFO L87 Difference]: Start difference. First operand 631 states and 930 transitions. Second operand 7 states. [2020-12-01 16:07:37,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:07:37,188 INFO L93 Difference]: Finished difference Result 2267 states and 3362 transitions. [2020-12-01 16:07:37,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 16:07:37,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-12-01 16:07:37,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:07:37,199 INFO L225 Difference]: With dead ends: 2267 [2020-12-01 16:07:37,199 INFO L226 Difference]: Without dead ends: 1646 [2020-12-01 16:07:37,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-01 16:07:37,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2020-12-01 16:07:37,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 756. [2020-12-01 16:07:37,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2020-12-01 16:07:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1139 transitions. [2020-12-01 16:07:37,240 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1139 transitions. Word has length 115 [2020-12-01 16:07:37,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:07:37,241 INFO L481 AbstractCegarLoop]: Abstraction has 756 states and 1139 transitions. [2020-12-01 16:07:37,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 16:07:37,241 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1139 transitions. [2020-12-01 16:07:37,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-01 16:07:37,243 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:07:37,243 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 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] [2020-12-01 16:07:37,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-01 16:07:37,458 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:07:37,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:07:37,459 INFO L82 PathProgramCache]: Analyzing trace with hash -698320702, now seen corresponding path program 1 times [2020-12-01 16:07:37,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:07:37,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952929987] [2020-12-01 16:07:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-01 16:07:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:07:37,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 16:07:37,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:07:37,914 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-12-01 16:07:37,914 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2020-12-01 16:07:37,916 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:37,928 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:37,929 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:37,929 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-12-01 16:07:37,988 INFO L348 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-12-01 16:07:37,989 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2020-12-01 16:07:37,991 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:37,994 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:37,994 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:37,995 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-12-01 16:07:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:07:38,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:07:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:07:38,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952929987] [2020-12-01 16:07:38,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:07:38,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-12-01 16:07:38,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917317131] [2020-12-01 16:07:38,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 16:07:38,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:07:38,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 16:07:38,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:07:38,157 INFO L87 Difference]: Start difference. First operand 756 states and 1139 transitions. Second operand 5 states. [2020-12-01 16:07:44,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:07:44,462 INFO L93 Difference]: Finished difference Result 1760 states and 2637 transitions. [2020-12-01 16:07:44,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:07:44,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-12-01 16:07:44,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:07:44,471 INFO L225 Difference]: With dead ends: 1760 [2020-12-01 16:07:44,471 INFO L226 Difference]: Without dead ends: 1014 [2020-12-01 16:07:44,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-01 16:07:44,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-12-01 16:07:44,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 876. [2020-12-01 16:07:44,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2020-12-01 16:07:44,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1344 transitions. [2020-12-01 16:07:44,515 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1344 transitions. Word has length 115 [2020-12-01 16:07:44,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:07:44,515 INFO L481 AbstractCegarLoop]: Abstraction has 876 states and 1344 transitions. [2020-12-01 16:07:44,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 16:07:44,516 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1344 transitions. [2020-12-01 16:07:44,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-01 16:07:44,518 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:07:44,518 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2020-12-01 16:07:44,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-01 16:07:44,736 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:07:44,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:07:44,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1667253281, now seen corresponding path program 2 times [2020-12-01 16:07:44,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:07:44,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375248591] [2020-12-01 16:07:44,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-01 16:07:45,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 16:07:45,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 16:07:45,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 16:07:45,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:07:45,336 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-12-01 16:07:45,337 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2020-12-01 16:07:45,338 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:45,346 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:45,347 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:45,347 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-12-01 16:07:45,386 INFO L348 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-12-01 16:07:45,387 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2020-12-01 16:07:45,389 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:45,392 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:45,393 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:45,393 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-12-01 16:07:45,453 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:07:45,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:07:45,586 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:07:45,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375248591] [2020-12-01 16:07:45,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:07:45,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 16:07:45,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971400682] [2020-12-01 16:07:45,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 16:07:45,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:07:45,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 16:07:45,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 16:07:45,589 INFO L87 Difference]: Start difference. First operand 876 states and 1344 transitions. Second operand 6 states. [2020-12-01 16:07:56,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:07:56,362 INFO L93 Difference]: Finished difference Result 2396 states and 3610 transitions. [2020-12-01 16:07:56,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 16:07:56,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2020-12-01 16:07:56,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:07:56,372 INFO L225 Difference]: With dead ends: 2396 [2020-12-01 16:07:56,373 INFO L226 Difference]: Without dead ends: 1530 [2020-12-01 16:07:56,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 16:07:56,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2020-12-01 16:07:56,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 931. [2020-12-01 16:07:56,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 931 states. [2020-12-01 16:07:56,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1413 transitions. [2020-12-01 16:07:56,426 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1413 transitions. Word has length 130 [2020-12-01 16:07:56,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:07:56,426 INFO L481 AbstractCegarLoop]: Abstraction has 931 states and 1413 transitions. [2020-12-01 16:07:56,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 16:07:56,426 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1413 transitions. [2020-12-01 16:07:56,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-01 16:07:56,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:07:56,429 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2020-12-01 16:07:56,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-01 16:07:56,652 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:07:56,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:07:56,652 INFO L82 PathProgramCache]: Analyzing trace with hash 919227327, now seen corresponding path program 1 times [2020-12-01 16:07:56,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:07:56,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673680608] [2020-12-01 16:07:56,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-01 16:07:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:07:57,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 16:07:57,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:07:57,206 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-12-01 16:07:57,207 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2020-12-01 16:07:57,210 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:57,220 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:57,221 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:57,221 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-12-01 16:07:57,262 INFO L348 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-12-01 16:07:57,262 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2020-12-01 16:07:57,264 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:57,266 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:57,266 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:57,267 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-12-01 16:07:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:07:57,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:07:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:07:57,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673680608] [2020-12-01 16:07:57,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:07:57,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 16:07:57,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919378174] [2020-12-01 16:07:57,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 16:07:57,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:07:57,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 16:07:57,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 16:07:57,418 INFO L87 Difference]: Start difference. First operand 931 states and 1413 transitions. Second operand 6 states. [2020-12-01 16:08:04,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:08:04,490 INFO L93 Difference]: Finished difference Result 2452 states and 3664 transitions. [2020-12-01 16:08:04,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 16:08:04,492 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2020-12-01 16:08:04,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:08:04,500 INFO L225 Difference]: With dead ends: 2452 [2020-12-01 16:08:04,500 INFO L226 Difference]: Without dead ends: 1531 [2020-12-01 16:08:04,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 16:08:04,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2020-12-01 16:08:04,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 936. [2020-12-01 16:08:04,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 936 states. [2020-12-01 16:08:04,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1407 transitions. [2020-12-01 16:08:04,545 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1407 transitions. Word has length 130 [2020-12-01 16:08:04,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:08:04,545 INFO L481 AbstractCegarLoop]: Abstraction has 936 states and 1407 transitions. [2020-12-01 16:08:04,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 16:08:04,546 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1407 transitions. [2020-12-01 16:08:04,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-01 16:08:04,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:08:04,548 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:08:04,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-01 16:08:04,764 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:08:04,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:08:04,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1537947938, now seen corresponding path program 1 times [2020-12-01 16:08:04,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:08:04,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154947235] [2020-12-01 16:08:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-01 16:08:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:08:05,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 16:08:05,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:08:05,315 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-12-01 16:08:05,315 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2020-12-01 16:08:05,316 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:08:05,329 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:08:05,329 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:08:05,329 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-12-01 16:08:05,370 INFO L348 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-12-01 16:08:05,370 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2020-12-01 16:08:05,376 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:08:05,379 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:08:05,380 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:08:05,380 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-12-01 16:08:05,440 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:08:05,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:08:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:08:05,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154947235] [2020-12-01 16:08:05,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:08:05,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 16:08:05,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133827704] [2020-12-01 16:08:05,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 16:08:05,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:08:05,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 16:08:05,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 16:08:05,587 INFO L87 Difference]: Start difference. First operand 936 states and 1407 transitions. Second operand 6 states. [2020-12-01 16:08:13,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:08:13,915 INFO L93 Difference]: Finished difference Result 2419 states and 3597 transitions. [2020-12-01 16:08:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 16:08:13,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2020-12-01 16:08:13,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:08:13,924 INFO L225 Difference]: With dead ends: 2419 [2020-12-01 16:08:13,924 INFO L226 Difference]: Without dead ends: 1651 [2020-12-01 16:08:13,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 16:08:13,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2020-12-01 16:08:13,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1052. [2020-12-01 16:08:13,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-12-01 16:08:13,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1581 transitions. [2020-12-01 16:08:13,977 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1581 transitions. Word has length 130 [2020-12-01 16:08:13,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:08:13,977 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1581 transitions. [2020-12-01 16:08:13,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 16:08:13,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1581 transitions. [2020-12-01 16:08:13,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-01 16:08:13,980 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:08:13,981 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 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] [2020-12-01 16:08:14,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-01 16:08:14,199 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:08:14,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:08:14,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1834884522, now seen corresponding path program 1 times [2020-12-01 16:08:14,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:08:14,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864835759] [2020-12-01 16:08:14,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-01 16:08:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:08:14,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 16:08:14,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:08:14,688 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-12-01 16:08:14,688 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2020-12-01 16:08:14,689 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:08:14,708 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:08:14,708 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:08:14,709 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-12-01 16:08:14,745 INFO L348 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-12-01 16:08:14,746 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2020-12-01 16:08:14,748 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:08:14,751 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:08:14,751 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:08:14,751 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-12-01 16:08:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:08:14,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:08:14,921 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:08:14,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864835759] [2020-12-01 16:08:14,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:08:14,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 16:08:14,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553866146] [2020-12-01 16:08:14,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 16:08:14,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:08:14,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 16:08:14,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 16:08:14,924 INFO L87 Difference]: Start difference. First operand 1052 states and 1581 transitions. Second operand 6 states. [2020-12-01 16:08:23,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:08:23,012 INFO L93 Difference]: Finished difference Result 2669 states and 3950 transitions. [2020-12-01 16:08:23,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 16:08:23,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-12-01 16:08:23,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:08:23,022 INFO L225 Difference]: With dead ends: 2669 [2020-12-01 16:08:23,022 INFO L226 Difference]: Without dead ends: 1627 [2020-12-01 16:08:23,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 16:08:23,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2020-12-01 16:08:23,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1052. [2020-12-01 16:08:23,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-12-01 16:08:23,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1559 transitions. [2020-12-01 16:08:23,071 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1559 transitions. Word has length 131 [2020-12-01 16:08:23,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:08:23,072 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1559 transitions. [2020-12-01 16:08:23,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 16:08:23,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1559 transitions. [2020-12-01 16:08:23,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-01 16:08:23,074 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:08:23,075 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:08:23,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-01 16:08:23,291 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:08:23,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:08:23,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1695627015, now seen corresponding path program 1 times [2020-12-01 16:08:23,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:08:23,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186425474] [2020-12-01 16:08:23,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-01 16:08:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:08:23,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 16:08:23,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:08:23,729 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-12-01 16:08:23,729 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2020-12-01 16:08:23,730 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:08:23,743 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:08:23,744 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:08:23,744 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-12-01 16:08:23,784 INFO L348 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-12-01 16:08:23,784 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2020-12-01 16:08:23,786 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:08:23,789 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:08:23,790 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:08:23,790 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-12-01 16:08:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:08:23,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:08:23,946 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:08:23,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186425474] [2020-12-01 16:08:23,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:08:23,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 16:08:23,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292517597] [2020-12-01 16:08:23,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 16:08:23,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:08:23,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 16:08:23,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 16:08:23,948 INFO L87 Difference]: Start difference. First operand 1052 states and 1559 transitions. Second operand 6 states. [2020-12-01 16:08:31,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:08:31,083 INFO L93 Difference]: Finished difference Result 2484 states and 3649 transitions. [2020-12-01 16:08:31,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 16:08:31,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-12-01 16:08:31,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:08:31,093 INFO L225 Difference]: With dead ends: 2484 [2020-12-01 16:08:31,093 INFO L226 Difference]: Without dead ends: 1620 [2020-12-01 16:08:31,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 16:08:31,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2020-12-01 16:08:31,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1063. [2020-12-01 16:08:31,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2020-12-01 16:08:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1565 transitions. [2020-12-01 16:08:31,141 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1565 transitions. Word has length 131 [2020-12-01 16:08:31,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:08:31,141 INFO L481 AbstractCegarLoop]: Abstraction has 1063 states and 1565 transitions. [2020-12-01 16:08:31,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 16:08:31,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1565 transitions. [2020-12-01 16:08:31,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-01 16:08:31,144 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:08:31,144 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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] [2020-12-01 16:08:31,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-01 16:08:31,368 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:08:31,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:08:31,369 INFO L82 PathProgramCache]: Analyzing trace with hash 653511332, now seen corresponding path program 1 times [2020-12-01 16:08:31,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:08:31,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119179953] [2020-12-01 16:08:31,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-12-01 16:08:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:08:31,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 16:08:31,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:08:31,906 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-12-01 16:08:31,906 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2020-12-01 16:08:31,907 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:08:31,914 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:08:31,915 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:08:31,915 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-12-01 16:08:31,943 INFO L348 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-12-01 16:08:31,944 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2020-12-01 16:08:31,946 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:08:31,948 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:08:31,949 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:08:31,949 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-12-01 16:08:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:08:31,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:08:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:08:32,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119179953] [2020-12-01 16:08:32,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:08:32,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 16:08:32,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198417934] [2020-12-01 16:08:32,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 16:08:32,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:08:32,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 16:08:32,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 16:08:32,107 INFO L87 Difference]: Start difference. First operand 1063 states and 1565 transitions. Second operand 6 states. [2020-12-01 16:08:41,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:08:41,121 INFO L93 Difference]: Finished difference Result 2672 states and 3892 transitions. [2020-12-01 16:08:41,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 16:08:41,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2020-12-01 16:08:41,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:08:41,130 INFO L225 Difference]: With dead ends: 2672 [2020-12-01 16:08:41,131 INFO L226 Difference]: Without dead ends: 1619 [2020-12-01 16:08:41,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 16:08:41,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2020-12-01 16:08:41,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1063. [2020-12-01 16:08:41,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2020-12-01 16:08:41,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1543 transitions. [2020-12-01 16:08:41,205 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1543 transitions. Word has length 132 [2020-12-01 16:08:41,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:08:41,207 INFO L481 AbstractCegarLoop]: Abstraction has 1063 states and 1543 transitions. [2020-12-01 16:08:41,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 16:08:41,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1543 transitions. [2020-12-01 16:08:41,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-01 16:08:41,210 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:08:41,210 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 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] [2020-12-01 16:08:41,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-12-01 16:08:41,434 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:08:41,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:08:41,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1844078565, now seen corresponding path program 1 times [2020-12-01 16:08:41,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:08:41,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323218721] [2020-12-01 16:08:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-12-01 16:08:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:08:41,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 16:08:41,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:08:41,873 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-12-01 16:08:41,873 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2020-12-01 16:08:41,874 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:08:41,882 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:08:41,882 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:08:41,883 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-12-01 16:08:41,914 INFO L348 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-12-01 16:08:41,915 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2020-12-01 16:08:41,917 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:08:41,919 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:08:41,920 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:08:41,920 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-12-01 16:08:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:08:41,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:08:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:08:42,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323218721] [2020-12-01 16:08:42,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:08:42,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 16:08:42,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505952920] [2020-12-01 16:08:42,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 16:08:42,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:08:42,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 16:08:42,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 16:08:42,098 INFO L87 Difference]: Start difference. First operand 1063 states and 1543 transitions. Second operand 6 states. [2020-12-01 16:08:49,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:08:49,883 INFO L93 Difference]: Finished difference Result 2627 states and 3793 transitions. [2020-12-01 16:08:49,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 16:08:49,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-12-01 16:08:49,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:08:49,892 INFO L225 Difference]: With dead ends: 2627 [2020-12-01 16:08:49,892 INFO L226 Difference]: Without dead ends: 1574 [2020-12-01 16:08:49,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 16:08:49,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2020-12-01 16:08:49,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1063. [2020-12-01 16:08:49,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2020-12-01 16:08:49,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1521 transitions. [2020-12-01 16:08:49,945 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1521 transitions. Word has length 133 [2020-12-01 16:08:49,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:08:49,945 INFO L481 AbstractCegarLoop]: Abstraction has 1063 states and 1521 transitions. [2020-12-01 16:08:49,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 16:08:49,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1521 transitions. [2020-12-01 16:08:49,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-01 16:08:49,947 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:08:49,948 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:08:50,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-12-01 16:08:50,164 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:08:50,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:08:50,165 INFO L82 PathProgramCache]: Analyzing trace with hash -197856968, now seen corresponding path program 1 times [2020-12-01 16:08:50,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:08:50,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276145197] [2020-12-01 16:08:50,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-12-01 16:08:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:08:50,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 16:08:50,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:08:50,617 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-12-01 16:08:50,617 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2020-12-01 16:08:50,618 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:08:50,627 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:08:50,628 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:08:50,628 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-12-01 16:08:50,687 INFO L348 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-12-01 16:08:50,687 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2020-12-01 16:08:50,690 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:08:50,692 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:08:50,692 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:08:50,692 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-12-01 16:08:50,737 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:08:50,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:08:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:08:50,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276145197] [2020-12-01 16:08:50,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:08:50,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 16:08:50,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830692662] [2020-12-01 16:08:50,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 16:08:50,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:08:50,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 16:08:50,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 16:08:50,862 INFO L87 Difference]: Start difference. First operand 1063 states and 1521 transitions. Second operand 6 states. [2020-12-01 16:08:54,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:08:54,632 INFO L93 Difference]: Finished difference Result 2727 states and 3884 transitions. [2020-12-01 16:08:54,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 16:08:54,633 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-12-01 16:08:54,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:08:54,641 INFO L225 Difference]: With dead ends: 2727 [2020-12-01 16:08:54,641 INFO L226 Difference]: Without dead ends: 1674 [2020-12-01 16:08:54,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 16:08:54,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2020-12-01 16:08:54,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1158. [2020-12-01 16:08:54,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1158 states. [2020-12-01 16:08:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1635 transitions. [2020-12-01 16:08:54,694 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1635 transitions. Word has length 133 [2020-12-01 16:08:54,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:08:54,694 INFO L481 AbstractCegarLoop]: Abstraction has 1158 states and 1635 transitions. [2020-12-01 16:08:54,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 16:08:54,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1635 transitions. [2020-12-01 16:08:54,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-01 16:08:54,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:08:54,697 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:08:54,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-12-01 16:08:54,917 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:08:54,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:08:54,918 INFO L82 PathProgramCache]: Analyzing trace with hash 584684213, now seen corresponding path program 1 times [2020-12-01 16:08:54,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:08:54,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359147598] [2020-12-01 16:08:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-12-01 16:08:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:08:55,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 16:08:55,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:08:55,334 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-12-01 16:08:55,334 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2020-12-01 16:08:55,335 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:08:55,343 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:08:55,343 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:08:55,343 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-12-01 16:08:55,385 INFO L348 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-12-01 16:08:55,385 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2020-12-01 16:08:55,387 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:08:55,390 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:08:55,390 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:08:55,390 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-12-01 16:08:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:08:55,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:08:55,542 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:08:55,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359147598] [2020-12-01 16:08:55,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:08:55,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 16:08:55,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610271084] [2020-12-01 16:08:55,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 16:08:55,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:08:55,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 16:08:55,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 16:08:55,543 INFO L87 Difference]: Start difference. First operand 1158 states and 1635 transitions. Second operand 6 states. [2020-12-01 16:09:02,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:09:02,740 INFO L93 Difference]: Finished difference Result 2781 states and 3928 transitions. [2020-12-01 16:09:02,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 16:09:02,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-12-01 16:09:02,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:09:02,747 INFO L225 Difference]: With dead ends: 2781 [2020-12-01 16:09:02,748 INFO L226 Difference]: Without dead ends: 1633 [2020-12-01 16:09:02,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 16:09:02,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2020-12-01 16:09:02,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1174. [2020-12-01 16:09:02,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2020-12-01 16:09:02,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1656 transitions. [2020-12-01 16:09:02,806 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1656 transitions. Word has length 134 [2020-12-01 16:09:02,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:09:02,807 INFO L481 AbstractCegarLoop]: Abstraction has 1174 states and 1656 transitions. [2020-12-01 16:09:02,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 16:09:02,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1656 transitions. [2020-12-01 16:09:02,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-01 16:09:02,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:09:02,809 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:09:03,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-12-01 16:09:03,012 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:09:03,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:09:03,014 INFO L82 PathProgramCache]: Analyzing trace with hash 2002780513, now seen corresponding path program 1 times [2020-12-01 16:09:03,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:09:03,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717715641] [2020-12-01 16:09:03,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-12-01 16:09:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:09:03,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 16:09:03,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:09:03,446 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-12-01 16:09:03,447 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2020-12-01 16:09:03,447 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:09:03,455 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:09:03,456 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:09:03,456 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-12-01 16:09:03,488 INFO L348 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-12-01 16:09:03,488 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2020-12-01 16:09:03,497 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:09:03,499 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:09:03,500 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:09:03,500 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-12-01 16:09:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:09:03,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:09:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-01 16:09:03,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717715641] [2020-12-01 16:09:03,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:09:03,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 16:09:03,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420874241] [2020-12-01 16:09:03,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 16:09:03,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:09:03,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 16:09:03,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 16:09:03,651 INFO L87 Difference]: Start difference. First operand 1174 states and 1656 transitions. Second operand 6 states. [2020-12-01 16:09:08,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:09:08,656 INFO L93 Difference]: Finished difference Result 2775 states and 3909 transitions. [2020-12-01 16:09:08,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 16:09:08,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-12-01 16:09:08,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:09:08,663 INFO L225 Difference]: With dead ends: 2775 [2020-12-01 16:09:08,663 INFO L226 Difference]: Without dead ends: 1611 [2020-12-01 16:09:08,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 16:09:08,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-12-01 16:09:08,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1174. [2020-12-01 16:09:08,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2020-12-01 16:09:08,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1640 transitions. [2020-12-01 16:09:08,727 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1640 transitions. Word has length 134 [2020-12-01 16:09:08,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:09:08,727 INFO L481 AbstractCegarLoop]: Abstraction has 1174 states and 1640 transitions. [2020-12-01 16:09:08,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 16:09:08,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1640 transitions. [2020-12-01 16:09:08,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-01 16:09:08,730 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:09:08,730 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 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] [2020-12-01 16:09:08,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-12-01 16:09:08,951 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:09:08,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:09:08,952 INFO L82 PathProgramCache]: Analyzing trace with hash -272550210, now seen corresponding path program 1 times [2020-12-01 16:09:08,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:09:08,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501913474] [2020-12-01 16:09:08,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2020-12-01 16:09:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:09:09,403 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:09:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:09:09,784 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:09:10,221 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 16:09:10,222 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 16:09:10,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-12-01 16:09:10,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 04:09:10 BoogieIcfgContainer [2020-12-01 16:09:10,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 16:09:10,639 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 16:09:10,640 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 16:09:10,640 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 16:09:10,640 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:07:13" (3/4) ... [2020-12-01 16:09:10,642 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 16:09:10,780 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e8f386a8-025a-44ea-ba59-92118d4cf218/bin/uautomizer/witness.graphml [2020-12-01 16:09:10,780 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 16:09:10,782 INFO L168 Benchmark]: Toolchain (without parser) took 123121.76 ms. Allocated memory was 58.7 MB in the beginning and 130.0 MB in the end (delta: 71.3 MB). Free memory was 36.2 MB in the beginning and 74.8 MB in the end (delta: -38.6 MB). Peak memory consumption was 85.4 MB. Max. memory is 16.1 GB. [2020-12-01 16:09:10,782 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 58.7 MB. Free memory was 40.6 MB in the beginning and 40.6 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:09:10,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.97 ms. Allocated memory is still 58.7 MB. Free memory was 36.0 MB in the beginning and 23.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2020-12-01 16:09:10,783 INFO L168 Benchmark]: Boogie Procedure Inliner took 130.03 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 22.7 MB in the beginning and 51.6 MB in the end (delta: -28.9 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-12-01 16:09:10,783 INFO L168 Benchmark]: Boogie Preprocessor took 95.71 ms. Allocated memory is still 73.4 MB. Free memory was 51.6 MB in the beginning and 45.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-01 16:09:10,783 INFO L168 Benchmark]: RCFGBuilder took 4464.65 ms. Allocated memory is still 73.4 MB. Free memory was 45.0 MB in the beginning and 35.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2020-12-01 16:09:10,784 INFO L168 Benchmark]: TraceAbstraction took 117569.94 ms. Allocated memory was 73.4 MB in the beginning and 130.0 MB in the end (delta: 56.6 MB). Free memory was 35.0 MB in the beginning and 43.5 MB in the end (delta: -8.5 MB). Peak memory consumption was 66.3 MB. Max. memory is 16.1 GB. [2020-12-01 16:09:10,784 INFO L168 Benchmark]: Witness Printer took 141.18 ms. Allocated memory is still 130.0 MB. Free memory was 43.5 MB in the beginning and 74.8 MB in the end (delta: -31.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-01 16:09:10,788 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 58.7 MB. Free memory was 40.6 MB in the beginning and 40.6 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 711.97 ms. Allocated memory is still 58.7 MB. Free memory was 36.0 MB in the beginning and 23.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 130.03 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 22.7 MB in the beginning and 51.6 MB in the end (delta: -28.9 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 95.71 ms. Allocated memory is still 73.4 MB. Free memory was 51.6 MB in the beginning and 45.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4464.65 ms. Allocated memory is still 73.4 MB. Free memory was 45.0 MB in the beginning and 35.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 117569.94 ms. Allocated memory was 73.4 MB in the beginning and 130.0 MB in the end (delta: 56.6 MB). Free memory was 35.0 MB in the beginning and 43.5 MB in the end (delta: -8.5 MB). Peak memory consumption was 66.3 MB. Max. memory is 16.1 GB. * Witness Printer took 141.18 ms. Allocated memory is still 130.0 MB. Free memory was 43.5 MB in the beginning and 74.8 MB in the end (delta: -31.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_client_data ; VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1067] SSL *s = (SSL*)malloc(sizeof(SSL)) ; [L1071] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1072] s->ctx = malloc(sizeof(SSL_CTX)) [L1073] s->session = malloc(sizeof(SSL_SESSION)) [L1074] s->state = 12292 [L1075] s->version = __VERIFIER_nondet_int() [L1082] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1083] unsigned long tmp ; [L1084] unsigned long l ; [L1085] long num1 ; [L1086] void (*cb)() ; [L1087] int ret ; [L1088] int new_state ; [L1089] int state ; [L1090] int skip ; [L1091] int tmp___1 = __VERIFIER_nondet_int() ; [L1092] int tmp___2 = __VERIFIER_nondet_int() ; [L1093] int tmp___3 ; [L1094] int tmp___4 ; [L1095] int tmp___5 ; [L1096] int tmp___6 ; [L1097] int tmp___7 ; [L1098] int tmp___8 ; [L1099] long tmp___9 ; [L1101] int blastFlag ; [L1104] blastFlag = 0 [L1105] s->hit=__VERIFIER_nondet_int () [L1106] s->state = 12292 [L1107] tmp = __VERIFIER_nondet_int() [L1108] cb = (void (*)())((void *)0) [L1109] ret = -1 [L1110] skip = 0 [L1111] EXPR s->info_callback VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1111] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1112] EXPR s->info_callback [L1112] cb = s->info_callback [L1120] EXPR s->in_handshake [L1120] s->in_handshake += 1 [L1121] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1131] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] EXPR s->state [L1133] state = s->state [L1134] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1134] COND TRUE s->state == 12292 [L1237] s->new_session = 1 [L1238] s->state = 4096 [L1239] EXPR s->ctx [L1239] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1239] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1244] s->server = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1245] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1250] EXPR s->version VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1250] COND FALSE !((s->version & 65280) != 768) [L1256] s->type = 4096 [L1257] EXPR s->init_buf VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1257] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1269] tmp___4 = __VERIFIER_nondet_int() [L1270] COND FALSE !(! tmp___4) [L1276] tmp___5 = __VERIFIER_nondet_int() [L1277] COND FALSE !(! tmp___5) [L1283] s->state = 4368 [L1284] EXPR s->ctx [L1284] EXPR (s->ctx)->stats.sess_connect [L1284] (s->ctx)->stats.sess_connect += 1 [L1285] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1605] EXPR s->s3 [L1605] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1605] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1634] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1131] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] EXPR s->state [L1133] state = s->state [L1134] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1134] COND FALSE !(s->state == 12292) [L1137] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1137] COND FALSE !(s->state == 16384) [L1140] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1140] COND FALSE !(s->state == 4096) [L1143] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1143] COND FALSE !(s->state == 20480) [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1146] COND FALSE !(s->state == 4099) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1149] COND TRUE s->state == 4368 [L1289] s->shutdown = 0 [L1290] ret = __VERIFIER_nondet_int() [L1291] COND TRUE blastFlag == 0 [L1292] blastFlag = 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1296] COND FALSE !(ret <= 0) [L1301] s->state = 4384 [L1302] s->init_num = 0 [L1303] EXPR s->bbio [L1303] EXPR s->wbio VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1303] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1605] EXPR s->s3 [L1605] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1605] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1634] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1131] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] EXPR s->state [L1133] state = s->state [L1134] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1134] COND FALSE !(s->state == 12292) [L1137] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1137] COND FALSE !(s->state == 16384) [L1140] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1140] COND FALSE !(s->state == 4096) [L1143] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1143] COND FALSE !(s->state == 20480) [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1146] COND FALSE !(s->state == 4099) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1149] COND FALSE !(s->state == 4368) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1152] COND FALSE !(s->state == 4369) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1155] COND TRUE s->state == 4384 [L1311] ret = __VERIFIER_nondet_int() [L1312] COND TRUE blastFlag == 1 [L1313] blastFlag = 2 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1317] COND FALSE !(ret <= 0) [L1322] s->hit VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1322] COND FALSE !(s->hit) [L1325] s->state = 4400 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1327] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1605] EXPR s->s3 [L1605] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1605] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1634] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1131] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] EXPR s->state [L1133] state = s->state [L1134] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1134] COND FALSE !(s->state == 12292) [L1137] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1137] COND FALSE !(s->state == 16384) [L1140] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1140] COND FALSE !(s->state == 4096) [L1143] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1143] COND FALSE !(s->state == 20480) [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1146] COND FALSE !(s->state == 4099) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1149] COND FALSE !(s->state == 4368) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1152] COND FALSE !(s->state == 4369) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1155] COND FALSE !(s->state == 4384) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1158] COND FALSE !(s->state == 4385) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1161] COND TRUE s->state == 4400 [L1331] EXPR s->s3 [L1331] EXPR (s->s3)->tmp.new_cipher [L1331] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1331] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1334] ret = __VERIFIER_nondet_int() [L1335] COND TRUE blastFlag == 2 [L1336] blastFlag = 3 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1340] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1346] s->state = 4416 [L1347] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1605] EXPR s->s3 [L1605] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1605] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1634] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1131] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] EXPR s->state [L1133] state = s->state [L1134] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1134] COND FALSE !(s->state == 12292) [L1137] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1137] COND FALSE !(s->state == 16384) [L1140] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1140] COND FALSE !(s->state == 4096) [L1143] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1143] COND FALSE !(s->state == 20480) [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1146] COND FALSE !(s->state == 4099) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1149] COND FALSE !(s->state == 4368) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1152] COND FALSE !(s->state == 4369) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1155] COND FALSE !(s->state == 4384) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1158] COND FALSE !(s->state == 4385) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1161] COND FALSE !(s->state == 4400) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1164] COND FALSE !(s->state == 4401) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1167] COND TRUE s->state == 4416 [L1351] ret = __VERIFIER_nondet_int() [L1352] COND TRUE blastFlag == 3 [L1353] blastFlag = 4 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1357] COND FALSE !(ret <= 0) [L1362] s->state = 4432 [L1363] s->init_num = 0 [L1364] tmp___6 = __VERIFIER_nondet_int() [L1365] COND FALSE !(! tmp___6) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1605] EXPR s->s3 [L1605] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1605] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1634] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1131] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] EXPR s->state [L1133] state = s->state [L1134] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1134] COND FALSE !(s->state == 12292) [L1137] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1137] COND FALSE !(s->state == 16384) [L1140] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1140] COND FALSE !(s->state == 4096) [L1143] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1143] COND FALSE !(s->state == 20480) [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1146] COND FALSE !(s->state == 4099) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1149] COND FALSE !(s->state == 4368) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1152] COND FALSE !(s->state == 4369) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1155] COND FALSE !(s->state == 4384) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1158] COND FALSE !(s->state == 4385) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1161] COND FALSE !(s->state == 4400) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1164] COND FALSE !(s->state == 4401) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1167] COND FALSE !(s->state == 4416) [L1170] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1170] COND FALSE !(s->state == 4417) [L1173] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1173] COND TRUE s->state == 4432 [L1374] ret = __VERIFIER_nondet_int() [L1375] COND FALSE !(blastFlag == 5) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1380] COND FALSE !(ret <= 0) [L1385] s->state = 4448 [L1386] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1605] EXPR s->s3 [L1605] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1605] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1634] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1131] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] EXPR s->state [L1133] state = s->state [L1134] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1134] COND FALSE !(s->state == 12292) [L1137] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1137] COND FALSE !(s->state == 16384) [L1140] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1140] COND FALSE !(s->state == 4096) [L1143] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1143] COND FALSE !(s->state == 20480) [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1146] COND FALSE !(s->state == 4099) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1149] COND FALSE !(s->state == 4368) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1152] COND FALSE !(s->state == 4369) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1155] COND FALSE !(s->state == 4384) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1158] COND FALSE !(s->state == 4385) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1161] COND FALSE !(s->state == 4400) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1164] COND FALSE !(s->state == 4401) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1167] COND FALSE !(s->state == 4416) [L1170] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1170] COND FALSE !(s->state == 4417) [L1173] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1173] COND FALSE !(s->state == 4432) [L1176] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1176] COND FALSE !(s->state == 4433) [L1179] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1179] COND TRUE s->state == 4448 [L1390] ret = __VERIFIER_nondet_int() [L1391] COND TRUE blastFlag == 4 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L3] __assert_fail("0", "s3_clnt.blast.01.i.cil-2.c", 3, "reach_error") VAL [init=1, SSLv3_client_data={-2147483617:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 117.3s, OverallIterations: 17, TraceHistogramMax: 7, AutomataDifference: 100.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2847 SDtfs, 3056 SDslu, 6161 SDs, 0 SdLazy, 5441 SolverSat, 608 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 94.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3578 GetRequests, 3495 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1174occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 16 MinimizatonAttempts, 6433 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 3.7s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 1930 NumberOfCodeBlocks, 1930 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 3554 ConstructedInterpolants, 0 QuantifiedInterpolants, 951890 SizeOfPredicates, 74 NumberOfNonLiveVariables, 4870 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 32 InterpolantComputations, 32 PerfectInterpolantSequences, 5078/5078 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 incorrect! Received shutdown request...