./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/s3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/s3.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 d18b16a91281a6c3ff97c6a6bee0acf1ccb6bd91 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/s3.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 d18b16a91281a6c3ff97c6a6bee0acf1ccb6bd91 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-a4ecdab [2020-11-30 01:27:42,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:27:42,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:27:42,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:27:42,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:27:42,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:27:42,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:27:42,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:27:42,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:27:42,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:27:42,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:27:42,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:27:42,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:27:42,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:27:42,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:27:42,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:27:42,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:27:42,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:27:42,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:27:42,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:27:42,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:27:42,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:27:42,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:27:42,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:27:42,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:27:42,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:27:42,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:27:42,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:27:42,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:27:42,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:27:42,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:27:42,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:27:42,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:27:42,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:27:42,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:27:42,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:27:42,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:27:42,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:27:42,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:27:42,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:27:42,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:27:42,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:27:42,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:27:42,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:27:42,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:27:42,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:27:42,805 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:27:42,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:27:42,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:27:42,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:27:42,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:27:42,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:27:42,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:27:42,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:27:42,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:27:42,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:27:42,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:27:42,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:27:42,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:27:42,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:27:42,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:27:42,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:27:42,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:27:42,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:27:42,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:27:42,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:27:42,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:27:42,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:27:42,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:27:42,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:27:42,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:27:42,814 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_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d18b16a91281a6c3ff97c6a6bee0acf1ccb6bd91 [2020-11-30 01:27:43,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:27:43,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:27:43,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:27:43,252 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:27:43,255 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:27:43,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/../../sv-benchmarks/c/loops/s3.i [2020-11-30 01:27:43,361 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/data/442ea6d84/a202c82bf49847dbb735e5722829e23e/FLAG6b9bf491e [2020-11-30 01:27:44,261 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:27:44,262 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/sv-benchmarks/c/loops/s3.i [2020-11-30 01:27:44,303 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/data/442ea6d84/a202c82bf49847dbb735e5722829e23e/FLAG6b9bf491e [2020-11-30 01:27:44,410 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/data/442ea6d84/a202c82bf49847dbb735e5722829e23e [2020-11-30 01:27:44,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:27:44,417 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:27:44,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:27:44,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:27:44,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:27:44,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:27:44" (1/1) ... [2020-11-30 01:27:44,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88689e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:44, skipping insertion in model container [2020-11-30 01:27:44,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:27:44" (1/1) ... [2020-11-30 01:27:44,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:27:44,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:27:45,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:27:45,169 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:27:45,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:27:45,400 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:27:45,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:45 WrapperNode [2020-11-30 01:27:45,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:27:45,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:27:45,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:27:45,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:27:45,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:45" (1/1) ... [2020-11-30 01:27:45,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:45" (1/1) ... [2020-11-30 01:27:45,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:27:45,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:27:45,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:27:45,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:27:45,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:45" (1/1) ... [2020-11-30 01:27:45,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:45" (1/1) ... [2020-11-30 01:27:45,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:45" (1/1) ... [2020-11-30 01:27:45,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:45" (1/1) ... [2020-11-30 01:27:45,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:45" (1/1) ... [2020-11-30 01:27:45,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:45" (1/1) ... [2020-11-30 01:27:45,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:45" (1/1) ... [2020-11-30 01:27:45,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:27:45,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:27:45,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:27:45,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:27:45,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:27:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-30 01:27:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:27:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:27:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:27:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-30 01:27:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:27:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 01:27:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:27:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:27:46,206 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-30 01:27:47,388 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-11-30 01:27:47,389 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-11-30 01:27:47,410 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:27:47,410 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 01:27:47,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:27:47 BoogieIcfgContainer [2020-11-30 01:27:47,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:27:47,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:27:47,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:27:47,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:27:47,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:27:44" (1/3) ... [2020-11-30 01:27:47,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce8ad8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:27:47, skipping insertion in model container [2020-11-30 01:27:47,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:45" (2/3) ... [2020-11-30 01:27:47,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce8ad8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:27:47, skipping insertion in model container [2020-11-30 01:27:47,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:27:47" (3/3) ... [2020-11-30 01:27:47,428 INFO L111 eAbstractionObserver]: Analyzing ICFG s3.i [2020-11-30 01:27:47,442 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:27:47,448 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:27:47,465 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:27:47,505 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:27:47,505 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:27:47,505 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:27:47,505 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:27:47,506 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:27:47,506 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:27:47,506 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:27:47,506 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:27:47,529 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-11-30 01:27:47,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 01:27:47,538 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:47,539 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] [2020-11-30 01:27:47,540 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:47,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:47,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1457703967, now seen corresponding path program 1 times [2020-11-30 01:27:47,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:47,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544663554] [2020-11-30 01:27:47,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:48,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544663554] [2020-11-30 01:27:48,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:48,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:27:48,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093115031] [2020-11-30 01:27:48,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:27:48,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:48,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:27:48,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:27:48,070 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 3 states. [2020-11-30 01:27:48,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:48,249 INFO L93 Difference]: Finished difference Result 376 states and 627 transitions. [2020-11-30 01:27:48,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:27:48,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-30 01:27:48,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:48,284 INFO L225 Difference]: With dead ends: 376 [2020-11-30 01:27:48,285 INFO L226 Difference]: Without dead ends: 217 [2020-11-30 01:27:48,295 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 [2020-11-30 01:27:48,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-30 01:27:48,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-11-30 01:27:48,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-11-30 01:27:48,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 321 transitions. [2020-11-30 01:27:48,406 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 321 transitions. Word has length 24 [2020-11-30 01:27:48,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:48,406 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 321 transitions. [2020-11-30 01:27:48,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:27:48,407 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 321 transitions. [2020-11-30 01:27:48,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-30 01:27:48,416 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:48,417 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] [2020-11-30 01:27:48,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:27:48,417 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:48,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:48,420 INFO L82 PathProgramCache]: Analyzing trace with hash 546953675, now seen corresponding path program 1 times [2020-11-30 01:27:48,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:48,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388349355] [2020-11-30 01:27:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:48,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388349355] [2020-11-30 01:27:48,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:48,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:27:48,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288919380] [2020-11-30 01:27:48,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:48,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:48,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:48,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:48,712 INFO L87 Difference]: Start difference. First operand 217 states and 321 transitions. Second operand 4 states. [2020-11-30 01:27:49,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:49,285 INFO L93 Difference]: Finished difference Result 359 states and 534 transitions. [2020-11-30 01:27:49,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:49,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-11-30 01:27:49,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:49,290 INFO L225 Difference]: With dead ends: 359 [2020-11-30 01:27:49,290 INFO L226 Difference]: Without dead ends: 252 [2020-11-30 01:27:49,292 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 [2020-11-30 01:27:49,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-11-30 01:27:49,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 235. [2020-11-30 01:27:49,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-11-30 01:27:49,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 351 transitions. [2020-11-30 01:27:49,338 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 351 transitions. Word has length 39 [2020-11-30 01:27:49,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:49,339 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 351 transitions. [2020-11-30 01:27:49,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:49,340 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 351 transitions. [2020-11-30 01:27:49,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-30 01:27:49,347 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:49,348 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] [2020-11-30 01:27:49,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:27:49,348 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:49,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:49,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1468155038, now seen corresponding path program 1 times [2020-11-30 01:27:49,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:49,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732811542] [2020-11-30 01:27:49,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:49,529 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:49,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732811542] [2020-11-30 01:27:49,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:49,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:27:49,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108601201] [2020-11-30 01:27:49,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:49,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:49,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:49,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:49,541 INFO L87 Difference]: Start difference. First operand 235 states and 351 transitions. Second operand 4 states. [2020-11-30 01:27:50,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:50,100 INFO L93 Difference]: Finished difference Result 376 states and 562 transitions. [2020-11-30 01:27:50,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:50,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-11-30 01:27:50,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:50,107 INFO L225 Difference]: With dead ends: 376 [2020-11-30 01:27:50,107 INFO L226 Difference]: Without dead ends: 251 [2020-11-30 01:27:50,111 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 [2020-11-30 01:27:50,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-11-30 01:27:50,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 235. [2020-11-30 01:27:50,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-11-30 01:27:50,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 350 transitions. [2020-11-30 01:27:50,137 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 350 transitions. Word has length 54 [2020-11-30 01:27:50,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:50,138 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 350 transitions. [2020-11-30 01:27:50,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:50,138 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 350 transitions. [2020-11-30 01:27:50,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-30 01:27:50,141 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:50,142 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-11-30 01:27:50,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:27:50,142 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:50,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:50,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1486810496, now seen corresponding path program 1 times [2020-11-30 01:27:50,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:50,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024638551] [2020-11-30 01:27:50,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:50,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024638551] [2020-11-30 01:27:50,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:50,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:27:50,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584350048] [2020-11-30 01:27:50,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:50,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:50,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:50,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:50,284 INFO L87 Difference]: Start difference. First operand 235 states and 350 transitions. Second operand 4 states. [2020-11-30 01:27:50,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:50,792 INFO L93 Difference]: Finished difference Result 376 states and 560 transitions. [2020-11-30 01:27:50,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:50,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-11-30 01:27:50,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:50,795 INFO L225 Difference]: With dead ends: 376 [2020-11-30 01:27:50,795 INFO L226 Difference]: Without dead ends: 251 [2020-11-30 01:27:50,796 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 [2020-11-30 01:27:50,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-11-30 01:27:50,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 235. [2020-11-30 01:27:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-11-30 01:27:50,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 349 transitions. [2020-11-30 01:27:50,808 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 349 transitions. Word has length 54 [2020-11-30 01:27:50,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:50,809 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 349 transitions. [2020-11-30 01:27:50,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:50,809 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 349 transitions. [2020-11-30 01:27:50,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-30 01:27:50,812 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:50,812 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:50,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:27:50,813 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:50,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:50,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1014296481, now seen corresponding path program 1 times [2020-11-30 01:27:50,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:50,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098447861] [2020-11-30 01:27:50,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:50,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098447861] [2020-11-30 01:27:50,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:50,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:27:50,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995724087] [2020-11-30 01:27:50,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:50,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:50,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:50,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:50,926 INFO L87 Difference]: Start difference. First operand 235 states and 349 transitions. Second operand 4 states. [2020-11-30 01:27:51,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:51,419 INFO L93 Difference]: Finished difference Result 376 states and 558 transitions. [2020-11-30 01:27:51,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:51,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-11-30 01:27:51,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:51,422 INFO L225 Difference]: With dead ends: 376 [2020-11-30 01:27:51,423 INFO L226 Difference]: Without dead ends: 251 [2020-11-30 01:27:51,424 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 [2020-11-30 01:27:51,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-11-30 01:27:51,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 235. [2020-11-30 01:27:51,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-11-30 01:27:51,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 348 transitions. [2020-11-30 01:27:51,435 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 348 transitions. Word has length 55 [2020-11-30 01:27:51,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:51,435 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 348 transitions. [2020-11-30 01:27:51,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:51,436 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 348 transitions. [2020-11-30 01:27:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-30 01:27:51,438 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:51,439 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:51,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:27:51,439 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:51,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:51,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1792231515, now seen corresponding path program 1 times [2020-11-30 01:27:51,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:51,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222377863] [2020-11-30 01:27:51,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:51,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222377863] [2020-11-30 01:27:51,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:51,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:27:51,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756938451] [2020-11-30 01:27:51,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:51,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:51,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:51,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:51,571 INFO L87 Difference]: Start difference. First operand 235 states and 348 transitions. Second operand 4 states. [2020-11-30 01:27:52,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:52,093 INFO L93 Difference]: Finished difference Result 376 states and 556 transitions. [2020-11-30 01:27:52,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:52,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-11-30 01:27:52,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:52,103 INFO L225 Difference]: With dead ends: 376 [2020-11-30 01:27:52,103 INFO L226 Difference]: Without dead ends: 251 [2020-11-30 01:27:52,104 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 [2020-11-30 01:27:52,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-11-30 01:27:52,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 235. [2020-11-30 01:27:52,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-11-30 01:27:52,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 347 transitions. [2020-11-30 01:27:52,127 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 347 transitions. Word has length 56 [2020-11-30 01:27:52,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:52,128 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 347 transitions. [2020-11-30 01:27:52,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:52,128 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 347 transitions. [2020-11-30 01:27:52,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-30 01:27:52,129 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:52,130 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:52,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 01:27:52,130 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:52,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:52,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1615585892, now seen corresponding path program 1 times [2020-11-30 01:27:52,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:52,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823427212] [2020-11-30 01:27:52,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:52,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823427212] [2020-11-30 01:27:52,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:52,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:27:52,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82197127] [2020-11-30 01:27:52,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:52,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:52,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:52,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:52,244 INFO L87 Difference]: Start difference. First operand 235 states and 347 transitions. Second operand 4 states. [2020-11-30 01:27:52,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:52,600 INFO L93 Difference]: Finished difference Result 367 states and 543 transitions. [2020-11-30 01:27:52,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:52,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-11-30 01:27:52,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:52,614 INFO L225 Difference]: With dead ends: 367 [2020-11-30 01:27:52,615 INFO L226 Difference]: Without dead ends: 242 [2020-11-30 01:27:52,616 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 [2020-11-30 01:27:52,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-11-30 01:27:52,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 235. [2020-11-30 01:27:52,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-11-30 01:27:52,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 346 transitions. [2020-11-30 01:27:52,632 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 346 transitions. Word has length 57 [2020-11-30 01:27:52,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:52,632 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 346 transitions. [2020-11-30 01:27:52,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:52,632 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 346 transitions. [2020-11-30 01:27:52,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-30 01:27:52,633 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:52,633 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:52,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 01:27:52,633 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:52,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:52,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1711683715, now seen corresponding path program 1 times [2020-11-30 01:27:52,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:52,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781331426] [2020-11-30 01:27:52,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 01:27:52,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781331426] [2020-11-30 01:27:52,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:52,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:27:52,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647589655] [2020-11-30 01:27:52,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:27:52,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:52,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:27:52,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:27:52,718 INFO L87 Difference]: Start difference. First operand 235 states and 346 transitions. Second operand 3 states. [2020-11-30 01:27:52,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:52,840 INFO L93 Difference]: Finished difference Result 482 states and 714 transitions. [2020-11-30 01:27:52,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:27:52,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-11-30 01:27:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:52,844 INFO L225 Difference]: With dead ends: 482 [2020-11-30 01:27:52,845 INFO L226 Difference]: Without dead ends: 357 [2020-11-30 01:27:52,846 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 [2020-11-30 01:27:52,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-11-30 01:27:52,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2020-11-30 01:27:52,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-11-30 01:27:52,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 523 transitions. [2020-11-30 01:27:52,865 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 523 transitions. Word has length 57 [2020-11-30 01:27:52,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:52,866 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 523 transitions. [2020-11-30 01:27:52,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:27:52,866 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 523 transitions. [2020-11-30 01:27:52,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-30 01:27:52,868 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:52,868 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:52,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 01:27:52,868 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:52,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:52,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1773723329, now seen corresponding path program 1 times [2020-11-30 01:27:52,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:52,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111571466] [2020-11-30 01:27:52,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:52,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111571466] [2020-11-30 01:27:52,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:52,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:27:52,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181259104] [2020-11-30 01:27:52,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:27:52,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:52,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:27:52,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:27:52,965 INFO L87 Difference]: Start difference. First operand 357 states and 523 transitions. Second operand 3 states. [2020-11-30 01:27:53,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:53,103 INFO L93 Difference]: Finished difference Result 628 states and 919 transitions. [2020-11-30 01:27:53,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:27:53,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-11-30 01:27:53,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:53,108 INFO L225 Difference]: With dead ends: 628 [2020-11-30 01:27:53,108 INFO L226 Difference]: Without dead ends: 381 [2020-11-30 01:27:53,109 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 [2020-11-30 01:27:53,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-11-30 01:27:53,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2020-11-30 01:27:53,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-11-30 01:27:53,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 555 transitions. [2020-11-30 01:27:53,124 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 555 transitions. Word has length 57 [2020-11-30 01:27:53,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:53,125 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 555 transitions. [2020-11-30 01:27:53,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:27:53,125 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 555 transitions. [2020-11-30 01:27:53,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-30 01:27:53,128 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:53,128 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-11-30 01:27:53,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 01:27:53,130 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:53,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:53,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1922596163, now seen corresponding path program 1 times [2020-11-30 01:27:53,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:53,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941222068] [2020-11-30 01:27:53,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:53,241 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 01:27:53,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941222068] [2020-11-30 01:27:53,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:53,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:27:53,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376947139] [2020-11-30 01:27:53,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:53,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:53,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:53,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:53,244 INFO L87 Difference]: Start difference. First operand 381 states and 555 transitions. Second operand 4 states. [2020-11-30 01:27:54,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:54,077 INFO L93 Difference]: Finished difference Result 1035 states and 1516 transitions. [2020-11-30 01:27:54,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:54,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-11-30 01:27:54,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:54,085 INFO L225 Difference]: With dead ends: 1035 [2020-11-30 01:27:54,086 INFO L226 Difference]: Without dead ends: 661 [2020-11-30 01:27:54,088 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 [2020-11-30 01:27:54,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-11-30 01:27:54,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 444. [2020-11-30 01:27:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-11-30 01:27:54,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 660 transitions. [2020-11-30 01:27:54,118 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 660 transitions. Word has length 77 [2020-11-30 01:27:54,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:54,119 INFO L481 AbstractCegarLoop]: Abstraction has 444 states and 660 transitions. [2020-11-30 01:27:54,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:54,119 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 660 transitions. [2020-11-30 01:27:54,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-30 01:27:54,121 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:54,122 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-11-30 01:27:54,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 01:27:54,122 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:54,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:54,123 INFO L82 PathProgramCache]: Analyzing trace with hash -126791679, now seen corresponding path program 1 times [2020-11-30 01:27:54,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:54,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822770078] [2020-11-30 01:27:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:54,238 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-30 01:27:54,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822770078] [2020-11-30 01:27:54,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:54,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:27:54,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705196356] [2020-11-30 01:27:54,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:54,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:54,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:54,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:54,241 INFO L87 Difference]: Start difference. First operand 444 states and 660 transitions. Second operand 4 states. [2020-11-30 01:27:54,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:54,845 INFO L93 Difference]: Finished difference Result 1021 states and 1516 transitions. [2020-11-30 01:27:54,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:54,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-11-30 01:27:54,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:54,851 INFO L225 Difference]: With dead ends: 1021 [2020-11-30 01:27:54,851 INFO L226 Difference]: Without dead ends: 584 [2020-11-30 01:27:54,853 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 [2020-11-30 01:27:54,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-11-30 01:27:54,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 510. [2020-11-30 01:27:54,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-11-30 01:27:54,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 774 transitions. [2020-11-30 01:27:54,877 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 774 transitions. Word has length 77 [2020-11-30 01:27:54,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:54,878 INFO L481 AbstractCegarLoop]: Abstraction has 510 states and 774 transitions. [2020-11-30 01:27:54,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:54,879 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 774 transitions. [2020-11-30 01:27:54,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-11-30 01:27:54,881 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:54,881 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] [2020-11-30 01:27:54,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 01:27:54,882 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:54,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:54,882 INFO L82 PathProgramCache]: Analyzing trace with hash 416305772, now seen corresponding path program 1 times [2020-11-30 01:27:54,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:54,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896322020] [2020-11-30 01:27:54,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-30 01:27:54,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896322020] [2020-11-30 01:27:54,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:54,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:27:54,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760779404] [2020-11-30 01:27:54,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:54,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:54,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:54,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:54,998 INFO L87 Difference]: Start difference. First operand 510 states and 774 transitions. Second operand 4 states. [2020-11-30 01:27:55,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:55,596 INFO L93 Difference]: Finished difference Result 1084 states and 1624 transitions. [2020-11-30 01:27:55,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:55,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-11-30 01:27:55,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:55,603 INFO L225 Difference]: With dead ends: 1084 [2020-11-30 01:27:55,603 INFO L226 Difference]: Without dead ends: 581 [2020-11-30 01:27:55,604 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 [2020-11-30 01:27:55,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-11-30 01:27:55,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 510. [2020-11-30 01:27:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-11-30 01:27:55,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 771 transitions. [2020-11-30 01:27:55,627 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 771 transitions. Word has length 92 [2020-11-30 01:27:55,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:55,628 INFO L481 AbstractCegarLoop]: Abstraction has 510 states and 771 transitions. [2020-11-30 01:27:55,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:55,628 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 771 transitions. [2020-11-30 01:27:55,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-11-30 01:27:55,631 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:55,631 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2020-11-30 01:27:55,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-30 01:27:55,631 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:55,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:55,632 INFO L82 PathProgramCache]: Analyzing trace with hash 397650314, now seen corresponding path program 1 times [2020-11-30 01:27:55,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:55,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071224062] [2020-11-30 01:27:55,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-30 01:27:55,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071224062] [2020-11-30 01:27:55,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:55,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:27:55,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881177258] [2020-11-30 01:27:55,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:55,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:55,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:55,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:55,757 INFO L87 Difference]: Start difference. First operand 510 states and 771 transitions. Second operand 4 states. [2020-11-30 01:27:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:56,325 INFO L93 Difference]: Finished difference Result 1084 states and 1618 transitions. [2020-11-30 01:27:56,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:56,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-11-30 01:27:56,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:56,331 INFO L225 Difference]: With dead ends: 1084 [2020-11-30 01:27:56,331 INFO L226 Difference]: Without dead ends: 581 [2020-11-30 01:27:56,333 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 [2020-11-30 01:27:56,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-11-30 01:27:56,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 510. [2020-11-30 01:27:56,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-11-30 01:27:56,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 768 transitions. [2020-11-30 01:27:56,354 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 768 transitions. Word has length 92 [2020-11-30 01:27:56,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:56,355 INFO L481 AbstractCegarLoop]: Abstraction has 510 states and 768 transitions. [2020-11-30 01:27:56,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:56,355 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 768 transitions. [2020-11-30 01:27:56,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-11-30 01:27:56,357 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:56,357 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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] [2020-11-30 01:27:56,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-30 01:27:56,358 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:56,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:56,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1569413781, now seen corresponding path program 1 times [2020-11-30 01:27:56,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:56,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561264567] [2020-11-30 01:27:56,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-30 01:27:56,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561264567] [2020-11-30 01:27:56,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:56,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:27:56,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058048821] [2020-11-30 01:27:56,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:56,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:56,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:56,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:56,454 INFO L87 Difference]: Start difference. First operand 510 states and 768 transitions. Second operand 4 states. [2020-11-30 01:27:56,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:56,995 INFO L93 Difference]: Finished difference Result 1084 states and 1612 transitions. [2020-11-30 01:27:56,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:56,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2020-11-30 01:27:56,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:57,001 INFO L225 Difference]: With dead ends: 1084 [2020-11-30 01:27:57,001 INFO L226 Difference]: Without dead ends: 581 [2020-11-30 01:27:57,003 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 [2020-11-30 01:27:57,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-11-30 01:27:57,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 510. [2020-11-30 01:27:57,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-11-30 01:27:57,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 765 transitions. [2020-11-30 01:27:57,025 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 765 transitions. Word has length 93 [2020-11-30 01:27:57,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:57,025 INFO L481 AbstractCegarLoop]: Abstraction has 510 states and 765 transitions. [2020-11-30 01:27:57,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:57,026 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 765 transitions. [2020-11-30 01:27:57,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-30 01:27:57,028 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:57,028 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-11-30 01:27:57,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-30 01:27:57,029 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:57,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:57,030 INFO L82 PathProgramCache]: Analyzing trace with hash 993375279, now seen corresponding path program 1 times [2020-11-30 01:27:57,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:57,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519771543] [2020-11-30 01:27:57,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-30 01:27:57,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519771543] [2020-11-30 01:27:57,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:57,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:27:57,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133503390] [2020-11-30 01:27:57,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:57,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:57,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:57,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:57,143 INFO L87 Difference]: Start difference. First operand 510 states and 765 transitions. Second operand 4 states. [2020-11-30 01:27:57,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:57,740 INFO L93 Difference]: Finished difference Result 1084 states and 1606 transitions. [2020-11-30 01:27:57,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:57,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-11-30 01:27:57,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:57,746 INFO L225 Difference]: With dead ends: 1084 [2020-11-30 01:27:57,746 INFO L226 Difference]: Without dead ends: 581 [2020-11-30 01:27:57,750 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 [2020-11-30 01:27:57,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-11-30 01:27:57,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 510. [2020-11-30 01:27:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-11-30 01:27:57,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 762 transitions. [2020-11-30 01:27:57,775 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 762 transitions. Word has length 94 [2020-11-30 01:27:57,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:57,775 INFO L481 AbstractCegarLoop]: Abstraction has 510 states and 762 transitions. [2020-11-30 01:27:57,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:57,776 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 762 transitions. [2020-11-30 01:27:57,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-11-30 01:27:57,778 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:57,778 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:57,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-30 01:27:57,780 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:57,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:57,781 INFO L82 PathProgramCache]: Analyzing trace with hash 2070050586, now seen corresponding path program 1 times [2020-11-30 01:27:57,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:57,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543351579] [2020-11-30 01:27:57,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-30 01:27:57,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543351579] [2020-11-30 01:27:57,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:57,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:27:57,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930941995] [2020-11-30 01:27:57,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:57,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:57,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:57,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:57,889 INFO L87 Difference]: Start difference. First operand 510 states and 762 transitions. Second operand 4 states. [2020-11-30 01:27:58,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:58,503 INFO L93 Difference]: Finished difference Result 1057 states and 1567 transitions. [2020-11-30 01:27:58,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:58,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-11-30 01:27:58,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:58,509 INFO L225 Difference]: With dead ends: 1057 [2020-11-30 01:27:58,509 INFO L226 Difference]: Without dead ends: 554 [2020-11-30 01:27:58,511 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 [2020-11-30 01:27:58,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2020-11-30 01:27:58,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 510. [2020-11-30 01:27:58,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-11-30 01:27:58,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 759 transitions. [2020-11-30 01:27:58,533 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 759 transitions. Word has length 95 [2020-11-30 01:27:58,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:58,533 INFO L481 AbstractCegarLoop]: Abstraction has 510 states and 759 transitions. [2020-11-30 01:27:58,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:58,534 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 759 transitions. [2020-11-30 01:27:58,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-11-30 01:27:58,536 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:58,536 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2020-11-30 01:27:58,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-30 01:27:58,537 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:58,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:58,538 INFO L82 PathProgramCache]: Analyzing trace with hash -2066779273, now seen corresponding path program 1 times [2020-11-30 01:27:58,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:58,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951937182] [2020-11-30 01:27:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:58,667 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-30 01:27:58,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951937182] [2020-11-30 01:27:58,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:58,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:27:58,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234780525] [2020-11-30 01:27:58,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:58,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:58,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:58,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:58,671 INFO L87 Difference]: Start difference. First operand 510 states and 759 transitions. Second operand 4 states. [2020-11-30 01:27:59,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:59,179 INFO L93 Difference]: Finished difference Result 1057 states and 1561 transitions. [2020-11-30 01:27:59,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:59,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-11-30 01:27:59,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:59,185 INFO L225 Difference]: With dead ends: 1057 [2020-11-30 01:27:59,185 INFO L226 Difference]: Without dead ends: 554 [2020-11-30 01:27:59,187 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 [2020-11-30 01:27:59,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2020-11-30 01:27:59,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 510. [2020-11-30 01:27:59,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-11-30 01:27:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 756 transitions. [2020-11-30 01:27:59,210 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 756 transitions. Word has length 95 [2020-11-30 01:27:59,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:59,211 INFO L481 AbstractCegarLoop]: Abstraction has 510 states and 756 transitions. [2020-11-30 01:27:59,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:59,211 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 756 transitions. [2020-11-30 01:27:59,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-30 01:27:59,213 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:59,214 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2020-11-30 01:27:59,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-30 01:27:59,214 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:59,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:59,215 INFO L82 PathProgramCache]: Analyzing trace with hash 952822956, now seen corresponding path program 1 times [2020-11-30 01:27:59,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:59,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532699856] [2020-11-30 01:27:59,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:59,298 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-30 01:27:59,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532699856] [2020-11-30 01:27:59,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:59,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:27:59,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919416176] [2020-11-30 01:27:59,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:59,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:59,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:59,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:59,302 INFO L87 Difference]: Start difference. First operand 510 states and 756 transitions. Second operand 4 states. [2020-11-30 01:27:59,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:59,755 INFO L93 Difference]: Finished difference Result 1045 states and 1539 transitions. [2020-11-30 01:27:59,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:59,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2020-11-30 01:27:59,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:59,760 INFO L225 Difference]: With dead ends: 1045 [2020-11-30 01:27:59,760 INFO L226 Difference]: Without dead ends: 542 [2020-11-30 01:27:59,762 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 [2020-11-30 01:27:59,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-11-30 01:27:59,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 510. [2020-11-30 01:27:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-11-30 01:27:59,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 753 transitions. [2020-11-30 01:27:59,784 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 753 transitions. Word has length 96 [2020-11-30 01:27:59,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:59,784 INFO L481 AbstractCegarLoop]: Abstraction has 510 states and 753 transitions. [2020-11-30 01:27:59,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:59,785 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 753 transitions. [2020-11-30 01:27:59,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-30 01:27:59,787 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:59,787 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] [2020-11-30 01:27:59,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-30 01:27:59,788 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:59,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:59,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1844388260, now seen corresponding path program 1 times [2020-11-30 01:27:59,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:59,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564071396] [2020-11-30 01:27:59,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:59,881 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:27:59,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564071396] [2020-11-30 01:27:59,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:59,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:27:59,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293692142] [2020-11-30 01:27:59,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:27:59,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:59,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:27:59,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:27:59,887 INFO L87 Difference]: Start difference. First operand 510 states and 753 transitions. Second operand 3 states. [2020-11-30 01:27:59,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:00,000 INFO L93 Difference]: Finished difference Result 1032 states and 1526 transitions. [2020-11-30 01:28:00,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:28:00,001 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-11-30 01:28:00,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:00,006 INFO L225 Difference]: With dead ends: 1032 [2020-11-30 01:28:00,007 INFO L226 Difference]: Without dead ends: 675 [2020-11-30 01:28:00,008 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 [2020-11-30 01:28:00,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2020-11-30 01:28:00,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 673. [2020-11-30 01:28:00,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-11-30 01:28:00,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 993 transitions. [2020-11-30 01:28:00,035 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 993 transitions. Word has length 98 [2020-11-30 01:28:00,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:00,036 INFO L481 AbstractCegarLoop]: Abstraction has 673 states and 993 transitions. [2020-11-30 01:28:00,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:28:00,036 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 993 transitions. [2020-11-30 01:28:00,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-30 01:28:00,039 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:00,039 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] [2020-11-30 01:28:00,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-30 01:28:00,040 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:00,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:00,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1703839650, now seen corresponding path program 1 times [2020-11-30 01:28:00,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:00,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959571852] [2020-11-30 01:28:00,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-30 01:28:00,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959571852] [2020-11-30 01:28:00,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:00,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:28:00,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566479494] [2020-11-30 01:28:00,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:28:00,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:00,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:28:00,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:28:00,133 INFO L87 Difference]: Start difference. First operand 673 states and 993 transitions. Second operand 3 states. [2020-11-30 01:28:00,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:00,292 INFO L93 Difference]: Finished difference Result 1191 states and 1757 transitions. [2020-11-30 01:28:00,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:28:00,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-11-30 01:28:00,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:00,298 INFO L225 Difference]: With dead ends: 1191 [2020-11-30 01:28:00,299 INFO L226 Difference]: Without dead ends: 671 [2020-11-30 01:28:00,302 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 [2020-11-30 01:28:00,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2020-11-30 01:28:00,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2020-11-30 01:28:00,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-11-30 01:28:00,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 985 transitions. [2020-11-30 01:28:00,362 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 985 transitions. Word has length 98 [2020-11-30 01:28:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:00,363 INFO L481 AbstractCegarLoop]: Abstraction has 671 states and 985 transitions. [2020-11-30 01:28:00,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:28:00,363 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 985 transitions. [2020-11-30 01:28:00,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-30 01:28:00,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:00,366 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] [2020-11-30 01:28:00,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-30 01:28:00,367 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:00,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:00,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1223162519, now seen corresponding path program 1 times [2020-11-30 01:28:00,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:00,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679201467] [2020-11-30 01:28:00,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:00,531 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:28:00,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679201467] [2020-11-30 01:28:00,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:00,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:28:00,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557290571] [2020-11-30 01:28:00,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:00,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:00,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:00,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:28:00,543 INFO L87 Difference]: Start difference. First operand 671 states and 985 transitions. Second operand 4 states. [2020-11-30 01:28:01,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:01,124 INFO L93 Difference]: Finished difference Result 1492 states and 2185 transitions. [2020-11-30 01:28:01,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:28:01,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-11-30 01:28:01,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:01,132 INFO L225 Difference]: With dead ends: 1492 [2020-11-30 01:28:01,132 INFO L226 Difference]: Without dead ends: 828 [2020-11-30 01:28:01,134 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 [2020-11-30 01:28:01,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-11-30 01:28:01,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 743. [2020-11-30 01:28:01,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-11-30 01:28:01,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1111 transitions. [2020-11-30 01:28:01,170 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1111 transitions. Word has length 100 [2020-11-30 01:28:01,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:01,170 INFO L481 AbstractCegarLoop]: Abstraction has 743 states and 1111 transitions. [2020-11-30 01:28:01,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:01,171 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1111 transitions. [2020-11-30 01:28:01,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-11-30 01:28:01,174 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:01,174 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] [2020-11-30 01:28:01,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-30 01:28:01,174 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:01,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:01,175 INFO L82 PathProgramCache]: Analyzing trace with hash -517718612, now seen corresponding path program 1 times [2020-11-30 01:28:01,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:01,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688674172] [2020-11-30 01:28:01,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:28:01,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688674172] [2020-11-30 01:28:01,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:01,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:28:01,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576546106] [2020-11-30 01:28:01,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:01,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:01,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:01,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:28:01,317 INFO L87 Difference]: Start difference. First operand 743 states and 1111 transitions. Second operand 4 states. [2020-11-30 01:28:02,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:02,059 INFO L93 Difference]: Finished difference Result 1561 states and 2305 transitions. [2020-11-30 01:28:02,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:28:02,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-11-30 01:28:02,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:02,066 INFO L225 Difference]: With dead ends: 1561 [2020-11-30 01:28:02,067 INFO L226 Difference]: Without dead ends: 825 [2020-11-30 01:28:02,069 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 [2020-11-30 01:28:02,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-11-30 01:28:02,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 743. [2020-11-30 01:28:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-11-30 01:28:02,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1108 transitions. [2020-11-30 01:28:02,097 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1108 transitions. Word has length 115 [2020-11-30 01:28:02,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:02,098 INFO L481 AbstractCegarLoop]: Abstraction has 743 states and 1108 transitions. [2020-11-30 01:28:02,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:02,098 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1108 transitions. [2020-11-30 01:28:02,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-11-30 01:28:02,101 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:02,101 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2020-11-30 01:28:02,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-30 01:28:02,102 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:02,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:02,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1265744566, now seen corresponding path program 1 times [2020-11-30 01:28:02,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:02,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958092173] [2020-11-30 01:28:02,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:02,196 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:28:02,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958092173] [2020-11-30 01:28:02,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:02,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:28:02,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718190907] [2020-11-30 01:28:02,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:02,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:02,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:02,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:28:02,199 INFO L87 Difference]: Start difference. First operand 743 states and 1108 transitions. Second operand 4 states. [2020-11-30 01:28:02,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:02,685 INFO L93 Difference]: Finished difference Result 1561 states and 2299 transitions. [2020-11-30 01:28:02,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:28:02,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-11-30 01:28:02,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:02,697 INFO L225 Difference]: With dead ends: 1561 [2020-11-30 01:28:02,698 INFO L226 Difference]: Without dead ends: 825 [2020-11-30 01:28:02,700 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 [2020-11-30 01:28:02,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-11-30 01:28:02,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 743. [2020-11-30 01:28:02,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-11-30 01:28:02,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1105 transitions. [2020-11-30 01:28:02,729 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1105 transitions. Word has length 115 [2020-11-30 01:28:02,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:02,730 INFO L481 AbstractCegarLoop]: Abstraction has 743 states and 1105 transitions. [2020-11-30 01:28:02,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:02,730 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1105 transitions. [2020-11-30 01:28:02,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-30 01:28:02,733 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:02,734 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2020-11-30 01:28:02,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-30 01:28:02,734 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:02,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:02,735 INFO L82 PathProgramCache]: Analyzing trace with hash -849536469, now seen corresponding path program 1 times [2020-11-30 01:28:02,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:02,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467280502] [2020-11-30 01:28:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:28:02,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467280502] [2020-11-30 01:28:02,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:02,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:28:02,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716479403] [2020-11-30 01:28:02,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:02,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:02,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:02,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:28:02,832 INFO L87 Difference]: Start difference. First operand 743 states and 1105 transitions. Second operand 4 states. [2020-11-30 01:28:03,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:03,512 INFO L93 Difference]: Finished difference Result 1561 states and 2293 transitions. [2020-11-30 01:28:03,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:28:03,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-11-30 01:28:03,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:03,520 INFO L225 Difference]: With dead ends: 1561 [2020-11-30 01:28:03,520 INFO L226 Difference]: Without dead ends: 825 [2020-11-30 01:28:03,522 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 [2020-11-30 01:28:03,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-11-30 01:28:03,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 743. [2020-11-30 01:28:03,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-11-30 01:28:03,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1102 transitions. [2020-11-30 01:28:03,554 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1102 transitions. Word has length 116 [2020-11-30 01:28:03,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:03,555 INFO L481 AbstractCegarLoop]: Abstraction has 743 states and 1102 transitions. [2020-11-30 01:28:03,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:03,555 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1102 transitions. [2020-11-30 01:28:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-11-30 01:28:03,558 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:03,559 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2020-11-30 01:28:03,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-30 01:28:03,559 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:03,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:03,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1134529903, now seen corresponding path program 1 times [2020-11-30 01:28:03,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:03,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180645158] [2020-11-30 01:28:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:28:03,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180645158] [2020-11-30 01:28:03,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:03,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:28:03,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884580999] [2020-11-30 01:28:03,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:03,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:03,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:03,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:28:03,681 INFO L87 Difference]: Start difference. First operand 743 states and 1102 transitions. Second operand 4 states. [2020-11-30 01:28:04,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:04,226 INFO L93 Difference]: Finished difference Result 1561 states and 2287 transitions. [2020-11-30 01:28:04,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:28:04,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-11-30 01:28:04,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:04,234 INFO L225 Difference]: With dead ends: 1561 [2020-11-30 01:28:04,234 INFO L226 Difference]: Without dead ends: 825 [2020-11-30 01:28:04,236 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 [2020-11-30 01:28:04,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-11-30 01:28:04,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 743. [2020-11-30 01:28:04,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-11-30 01:28:04,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1099 transitions. [2020-11-30 01:28:04,267 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1099 transitions. Word has length 117 [2020-11-30 01:28:04,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:04,268 INFO L481 AbstractCegarLoop]: Abstraction has 743 states and 1099 transitions. [2020-11-30 01:28:04,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:04,268 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1099 transitions. [2020-11-30 01:28:04,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-11-30 01:28:04,271 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:04,272 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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] [2020-11-30 01:28:04,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-30 01:28:04,272 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:04,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:04,274 INFO L82 PathProgramCache]: Analyzing trace with hash 182595248, now seen corresponding path program 1 times [2020-11-30 01:28:04,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:04,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105346486] [2020-11-30 01:28:04,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:28:04,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105346486] [2020-11-30 01:28:04,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:04,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:28:04,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617477096] [2020-11-30 01:28:04,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:04,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:04,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:04,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:28:04,454 INFO L87 Difference]: Start difference. First operand 743 states and 1099 transitions. Second operand 4 states. [2020-11-30 01:28:04,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:04,974 INFO L93 Difference]: Finished difference Result 1534 states and 2248 transitions. [2020-11-30 01:28:04,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:28:04,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2020-11-30 01:28:04,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:04,981 INFO L225 Difference]: With dead ends: 1534 [2020-11-30 01:28:04,982 INFO L226 Difference]: Without dead ends: 798 [2020-11-30 01:28:04,983 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 [2020-11-30 01:28:04,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2020-11-30 01:28:05,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 743. [2020-11-30 01:28:05,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-11-30 01:28:05,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1096 transitions. [2020-11-30 01:28:05,012 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1096 transitions. Word has length 118 [2020-11-30 01:28:05,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:05,012 INFO L481 AbstractCegarLoop]: Abstraction has 743 states and 1096 transitions. [2020-11-30 01:28:05,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:05,013 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1096 transitions. [2020-11-30 01:28:05,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-11-30 01:28:05,016 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:05,016 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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] [2020-11-30 01:28:05,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-30 01:28:05,017 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:05,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:05,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1828816845, now seen corresponding path program 1 times [2020-11-30 01:28:05,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:05,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691855666] [2020-11-30 01:28:05,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 133 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-11-30 01:28:05,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691855666] [2020-11-30 01:28:05,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021157386] [2020-11-30 01:28:05,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:28:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:05,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:28:05,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:05,766 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 9 [2020-11-30 01:28:05,767 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-30 01:28:05,768 INFO L384 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 [2020-11-30 01:28:05,769 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:28:05,790 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:28:05,791 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:28:05,791 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-11-30 01:28:05,863 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-11-30 01:28:05,864 INFO L384 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 [2020-11-30 01:28:05,867 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:28:05,871 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:28:05,871 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:28:05,871 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-11-30 01:28:05,947 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:28:05,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:28:05,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2020-11-30 01:28:05,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061127126] [2020-11-30 01:28:05,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:05,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:05,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:05,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:28:05,950 INFO L87 Difference]: Start difference. First operand 743 states and 1096 transitions. Second operand 4 states. [2020-11-30 01:28:06,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:06,541 INFO L93 Difference]: Finished difference Result 1534 states and 2242 transitions. [2020-11-30 01:28:06,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:28:06,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2020-11-30 01:28:06,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:06,548 INFO L225 Difference]: With dead ends: 1534 [2020-11-30 01:28:06,548 INFO L226 Difference]: Without dead ends: 798 [2020-11-30 01:28:06,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:28:06,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2020-11-30 01:28:06,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 743. [2020-11-30 01:28:06,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-11-30 01:28:06,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1093 transitions. [2020-11-30 01:28:06,589 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1093 transitions. Word has length 118 [2020-11-30 01:28:06,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:06,589 INFO L481 AbstractCegarLoop]: Abstraction has 743 states and 1093 transitions. [2020-11-30 01:28:06,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:06,590 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1093 transitions. [2020-11-30 01:28:06,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-11-30 01:28:06,593 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:06,593 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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] [2020-11-30 01:28:06,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-11-30 01:28:06,821 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:06,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:06,821 INFO L82 PathProgramCache]: Analyzing trace with hash 405159276, now seen corresponding path program 1 times [2020-11-30 01:28:06,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:06,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220795761] [2020-11-30 01:28:06,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 134 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-11-30 01:28:07,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220795761] [2020-11-30 01:28:07,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620457207] [2020-11-30 01:28:07,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:28:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:07,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:28:07,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:07,430 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-30 01:28:07,430 INFO L384 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 [2020-11-30 01:28:07,431 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:28:07,449 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:28:07,450 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:28:07,450 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-11-30 01:28:07,484 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-11-30 01:28:07,485 INFO L384 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 [2020-11-30 01:28:07,487 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:28:07,490 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:28:07,490 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:28:07,490 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-11-30 01:28:07,537 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:28:07,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:28:07,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2020-11-30 01:28:07,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701102468] [2020-11-30 01:28:07,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:07,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:07,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:07,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:28:07,540 INFO L87 Difference]: Start difference. First operand 743 states and 1093 transitions. Second operand 4 states. [2020-11-30 01:28:08,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:08,149 INFO L93 Difference]: Finished difference Result 1522 states and 2221 transitions. [2020-11-30 01:28:08,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:28:08,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-11-30 01:28:08,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:08,157 INFO L225 Difference]: With dead ends: 1522 [2020-11-30 01:28:08,157 INFO L226 Difference]: Without dead ends: 786 [2020-11-30 01:28:08,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:28:08,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-11-30 01:28:08,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 743. [2020-11-30 01:28:08,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-11-30 01:28:08,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1090 transitions. [2020-11-30 01:28:08,188 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1090 transitions. Word has length 119 [2020-11-30 01:28:08,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:08,189 INFO L481 AbstractCegarLoop]: Abstraction has 743 states and 1090 transitions. [2020-11-30 01:28:08,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:08,189 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1090 transitions. [2020-11-30 01:28:08,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-11-30 01:28:08,192 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:08,193 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 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] [2020-11-30 01:28:08,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-11-30 01:28:08,409 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:08,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:08,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1820752595, now seen corresponding path program 1 times [2020-11-30 01:28:08,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:08,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403208284] [2020-11-30 01:28:08,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:08,609 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-11-30 01:28:08,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403208284] [2020-11-30 01:28:08,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:08,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:28:08,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892239518] [2020-11-30 01:28:08,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:08,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:08,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:08,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:28:08,613 INFO L87 Difference]: Start difference. First operand 743 states and 1090 transitions. Second operand 4 states. [2020-11-30 01:28:09,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:09,166 INFO L93 Difference]: Finished difference Result 1483 states and 2174 transitions. [2020-11-30 01:28:09,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:28:09,167 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-11-30 01:28:09,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:09,172 INFO L225 Difference]: With dead ends: 1483 [2020-11-30 01:28:09,173 INFO L226 Difference]: Without dead ends: 747 [2020-11-30 01:28:09,174 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 [2020-11-30 01:28:09,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2020-11-30 01:28:09,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 746. [2020-11-30 01:28:09,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-11-30 01:28:09,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1093 transitions. [2020-11-30 01:28:09,203 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1093 transitions. Word has length 122 [2020-11-30 01:28:09,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:09,203 INFO L481 AbstractCegarLoop]: Abstraction has 746 states and 1093 transitions. [2020-11-30 01:28:09,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:09,204 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1093 transitions. [2020-11-30 01:28:09,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-11-30 01:28:09,207 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:09,207 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] [2020-11-30 01:28:09,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-30 01:28:09,208 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:09,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:09,208 INFO L82 PathProgramCache]: Analyzing trace with hash -272550210, now seen corresponding path program 1 times [2020-11-30 01:28:09,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:09,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290354137] [2020-11-30 01:28:09,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:28:09,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:28:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:28:09,799 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:28:09,913 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:28:09,913 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:28:09,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-11-30 01:28:10,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:28:10 BoogieIcfgContainer [2020-11-30 01:28:10,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:28:10,145 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:28:10,146 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:28:10,146 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:28:10,147 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:27:47" (3/4) ... [2020-11-30 01:28:10,150 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:28:10,151 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:28:10,152 INFO L168 Benchmark]: Toolchain (without parser) took 25734.59 ms. Allocated memory was 111.1 MB in the beginning and 293.6 MB in the end (delta: 182.5 MB). Free memory was 79.9 MB in the beginning and 160.6 MB in the end (delta: -80.7 MB). Peak memory consumption was 100.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:10,152 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 35.9 MB in the beginning and 35.9 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:28:10,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 981.06 ms. Allocated memory is still 111.1 MB. Free memory was 79.9 MB in the beginning and 70.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:10,153 INFO L168 Benchmark]: Boogie Procedure Inliner took 148.53 ms. Allocated memory is still 111.1 MB. Free memory was 70.5 MB in the beginning and 66.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:10,154 INFO L168 Benchmark]: Boogie Preprocessor took 183.65 ms. Allocated memory is still 111.1 MB. Free memory was 66.4 MB in the beginning and 60.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:10,154 INFO L168 Benchmark]: RCFGBuilder took 1676.37 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 60.1 MB in the beginning and 95.5 MB in the end (delta: -35.5 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:10,155 INFO L168 Benchmark]: TraceAbstraction took 22726.48 ms. Allocated memory was 138.4 MB in the beginning and 293.6 MB in the end (delta: 155.2 MB). Free memory was 94.6 MB in the beginning and 160.6 MB in the end (delta: -66.0 MB). Peak memory consumption was 88.9 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:10,155 INFO L168 Benchmark]: Witness Printer took 5.43 ms. Allocated memory is still 293.6 MB. Free memory is still 160.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:28:10,158 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 35.9 MB in the beginning and 35.9 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 981.06 ms. Allocated memory is still 111.1 MB. Free memory was 79.9 MB in the beginning and 70.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 148.53 ms. Allocated memory is still 111.1 MB. Free memory was 70.5 MB in the beginning and 66.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 183.65 ms. Allocated memory is still 111.1 MB. Free memory was 66.4 MB in the beginning and 60.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1676.37 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 60.1 MB in the beginning and 95.5 MB in the end (delta: -35.5 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22726.48 ms. Allocated memory was 138.4 MB in the beginning and 293.6 MB in the end (delta: 155.2 MB). Free memory was 94.6 MB in the beginning and 160.6 MB in the end (delta: -66.0 MB). Peak memory consumption was 88.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.43 ms. Allocated memory is still 293.6 MB. Free memory is still 160.6 MB. There was no memory consumed. 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 1332. Possible FailurePath: [L1041] static int init = 1; [L1042] static SSL_METHOD SSLv3_client_data ; VAL [init=1, SSLv3_client_data={7:0}] [L1064] SSL *s ; [L1068] s = malloc (sizeof (SSL)) [L1069] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1070] s->ctx = malloc(sizeof(SSL_CTX)) [L1071] s->state = 12292 [L1072] s->version = __VERIFIER_nondet_int() [L1079] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1080] unsigned long tmp ; [L1081] unsigned long l ; [L1082] long num1 ; [L1083] void (*cb)() ; [L1084] int ret ; [L1085] int new_state ; [L1086] int state ; [L1087] int skip ; [L1088] int *tmp___0 ; [L1089] int tmp___1 = __VERIFIER_nondet_int(); [L1090] int tmp___2 = __VERIFIER_nondet_int(); [L1091] int tmp___3 ; [L1092] int tmp___4 ; [L1093] int tmp___5 ; [L1094] int tmp___6 ; [L1095] int tmp___7 ; [L1096] int tmp___8 ; [L1097] long tmp___9 ; [L1099] int blastFlag ; [L1102] blastFlag = 0 [L1103] s->state = 12292 [L1104] s->hit = __VERIFIER_nondet_int() [L1106] tmp = __VERIFIER_nondet_int() [L1107] cb = (void (*)())((void *)0) [L1108] ret = -1 [L1109] skip = 0 [L1110] tmp___0 = (int*)malloc(sizeof(int)) [L1111] *tmp___0 = 0 [L1112] EXPR s->info_callback VAL [init=1, SSLv3_client_data={7:0}] [L1112] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1113] EXPR s->info_callback [L1113] cb = s->info_callback [L1121] EXPR s->in_handshake [L1121] s->in_handshake += 1 [L1122] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_client_data={7:0}] [L1132] COND TRUE 1 VAL [init=1, SSLv3_client_data={7:0}] [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1135] COND TRUE s->state == 12292 [L1238] s->new_session = 1 [L1239] s->state = 4096 [L1240] EXPR s->ctx [L1240] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1240] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1245] s->server = 0 VAL [init=1, SSLv3_client_data={7:0}] [L1246] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [init=1, SSLv3_client_data={7:0}] [L1251] EXPR s->version VAL [init=1, SSLv3_client_data={7:0}] [L1251] COND FALSE !((s->version & 65280) != 768) [L1257] s->type = 4096 [L1258] EXPR s->init_buf VAL [init=1, SSLv3_client_data={7:0}] [L1258] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1270] tmp___4 = __VERIFIER_nondet_int() [L1271] COND FALSE !(! tmp___4) [L1277] tmp___5 = __VERIFIER_nondet_int() [L1278] COND FALSE !(! tmp___5) [L1284] s->state = 4368 [L1285] EXPR s->ctx [L1285] EXPR (s->ctx)->stats.sess_connect [L1285] (s->ctx)->stats.sess_connect += 1 [L1286] s->init_num = 0 VAL [init=1, SSLv3_client_data={7:0}] [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={7:0}] [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 VAL [init=1, SSLv3_client_data={7:0}] [L1132] COND TRUE 1 VAL [init=1, SSLv3_client_data={7:0}] [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1150] COND TRUE s->state == 4368 [L1290] s->shutdown = 0 [L1291] ret = __VERIFIER_nondet_int() [L1292] COND TRUE blastFlag == 0 [L1293] blastFlag = 1 VAL [init=1, SSLv3_client_data={7:0}] [L1297] COND FALSE !(ret <= 0) [L1302] s->state = 4384 [L1303] s->init_num = 0 [L1304] EXPR s->bbio [L1304] EXPR s->wbio VAL [init=1, SSLv3_client_data={7:0}] [L1304] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={7:0}] [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 VAL [init=1, SSLv3_client_data={7:0}] [L1132] COND TRUE 1 VAL [init=1, SSLv3_client_data={7:0}] [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1156] COND TRUE s->state == 4384 [L1312] ret = __VERIFIER_nondet_int() [L1313] COND TRUE blastFlag == 1 [L1314] blastFlag = 2 VAL [init=1, SSLv3_client_data={7:0}] [L1318] COND FALSE !(ret <= 0) [L1323] s->hit VAL [init=1, SSLv3_client_data={7:0}] [L1323] COND FALSE !(s->hit) [L1326] s->state = 4400 VAL [init=1, SSLv3_client_data={7:0}] [L1328] s->init_num = 0 VAL [init=1, SSLv3_client_data={7:0}] [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={7:0}] [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 VAL [init=1, SSLv3_client_data={7:0}] [L1132] COND TRUE 1 VAL [init=1, SSLv3_client_data={7:0}] [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1156] COND FALSE !(s->state == 4384) [L1159] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1159] COND FALSE !(s->state == 4385) [L1162] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1162] COND TRUE s->state == 4400 [L1332] EXPR s->s3 [L1332] EXPR (s->s3)->tmp.new_cipher [L1332] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_client_data={7:0}] [L1332] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1335] ret = __VERIFIER_nondet_int() [L1336] COND TRUE blastFlag == 2 [L1337] blastFlag = 3 VAL [init=1, SSLv3_client_data={7:0}] [L1341] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_client_data={7:0}] [L1347] s->state = 4416 [L1348] s->init_num = 0 VAL [init=1, SSLv3_client_data={7:0}] [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={7:0}] [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 VAL [init=1, SSLv3_client_data={7:0}] [L1132] COND TRUE 1 VAL [init=1, SSLv3_client_data={7:0}] [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1156] COND FALSE !(s->state == 4384) [L1159] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1159] COND FALSE !(s->state == 4385) [L1162] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1162] COND FALSE !(s->state == 4400) [L1165] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1165] COND FALSE !(s->state == 4401) [L1168] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1168] COND TRUE s->state == 4416 [L1352] ret = __VERIFIER_nondet_int() [L1353] COND TRUE blastFlag == 3 [L1354] blastFlag = 4 VAL [init=1, SSLv3_client_data={7:0}] [L1358] COND FALSE !(ret <= 0) [L1363] s->state = 4432 [L1364] s->init_num = 0 [L1365] tmp___6 = __VERIFIER_nondet_int() [L1366] COND FALSE !(! tmp___6) VAL [init=1, SSLv3_client_data={7:0}] [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={7:0}] [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 VAL [init=1, SSLv3_client_data={7:0}] [L1132] COND TRUE 1 VAL [init=1, SSLv3_client_data={7:0}] [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1156] COND FALSE !(s->state == 4384) [L1159] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1159] COND FALSE !(s->state == 4385) [L1162] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1162] COND FALSE !(s->state == 4400) [L1165] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1165] COND FALSE !(s->state == 4401) [L1168] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1168] COND FALSE !(s->state == 4416) [L1171] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1171] COND FALSE !(s->state == 4417) [L1174] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1174] COND TRUE s->state == 4432 [L1375] ret = __VERIFIER_nondet_int() [L1376] COND FALSE !(blastFlag == 5) VAL [init=1, SSLv3_client_data={7:0}] [L1381] COND FALSE !(ret <= 0) [L1386] s->state = 4448 [L1387] s->init_num = 0 VAL [init=1, SSLv3_client_data={7:0}] [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={7:0}] [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 VAL [init=1, SSLv3_client_data={7:0}] [L1132] COND TRUE 1 VAL [init=1, SSLv3_client_data={7:0}] [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1156] COND FALSE !(s->state == 4384) [L1159] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1159] COND FALSE !(s->state == 4385) [L1162] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1162] COND FALSE !(s->state == 4400) [L1165] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1165] COND FALSE !(s->state == 4401) [L1168] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1168] COND FALSE !(s->state == 4416) [L1171] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1171] COND FALSE !(s->state == 4417) [L1174] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1174] COND FALSE !(s->state == 4432) [L1177] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1177] COND FALSE !(s->state == 4433) [L1180] EXPR s->state VAL [init=1, SSLv3_client_data={7:0}] [L1180] COND TRUE s->state == 4448 [L1391] ret = __VERIFIER_nondet_int() [L1392] COND TRUE blastFlag == 4 VAL [init=1, SSLv3_client_data={7:0}] [L3] __assert_fail("0", "s3.i", 3, "reach_error") VAL [init=1, SSLv3_client_data={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.4s, OverallIterations: 30, TraceHistogramMax: 7, AutomataDifference: 14.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6216 SDtfs, 1597 SDslu, 7676 SDs, 0 SdLazy, 3555 SolverSat, 142 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 380 GetRequests, 289 SyntacticMatches, 8 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=746occurred in iteration=29, 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, 29 MinimizatonAttempts, 1352 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 2874 NumberOfCodeBlocks, 2874 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 2706 ConstructedInterpolants, 0 QuantifiedInterpolants, 675886 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1013 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 31 InterpolantComputations, 29 PerfectInterpolantSequences, 3062/3064 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-a4ecdab [2020-11-30 01:28:13,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:28:13,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:28:13,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:28:13,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:28:13,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:28:13,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:28:13,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:28:13,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:28:13,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:28:13,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:28:13,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:28:13,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:28:13,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:28:13,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:28:13,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:28:13,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:28:13,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:28:13,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:28:13,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:28:13,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:28:13,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:28:13,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:28:13,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:28:13,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:28:13,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:28:13,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:28:13,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:28:13,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:28:13,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:28:13,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:28:13,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:28:13,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:28:13,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:28:13,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:28:13,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:28:13,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:28:13,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:28:13,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:28:13,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:28:13,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:28:13,517 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 01:28:13,548 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:28:13,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:28:13,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:28:13,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:28:13,551 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:28:13,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:28:13,552 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:28:13,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:28:13,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:28:13,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:28:13,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:28:13,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:28:13,554 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:28:13,555 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:28:13,555 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:28:13,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:28:13,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:28:13,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:28:13,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:28:13,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:28:13,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:28:13,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:28:13,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:28:13,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:28:13,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:28:13,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:28:13,560 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 01:28:13,560 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:28:13,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:28:13,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:28:13,561 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:28:13,561 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_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d18b16a91281a6c3ff97c6a6bee0acf1ccb6bd91 [2020-11-30 01:28:14,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:28:14,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:28:14,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:28:14,067 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:28:14,068 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:28:14,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/../../sv-benchmarks/c/loops/s3.i [2020-11-30 01:28:14,163 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/data/dc0c9046c/83064b3b96b043229b22c908445907d5/FLAG0d4ff4d20 [2020-11-30 01:28:14,924 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:28:14,925 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/sv-benchmarks/c/loops/s3.i [2020-11-30 01:28:14,947 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/data/dc0c9046c/83064b3b96b043229b22c908445907d5/FLAG0d4ff4d20 [2020-11-30 01:28:15,164 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/data/dc0c9046c/83064b3b96b043229b22c908445907d5 [2020-11-30 01:28:15,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:28:15,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:28:15,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:28:15,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:28:15,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:28:15,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:28:15" (1/1) ... [2020-11-30 01:28:15,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d80714f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:15, skipping insertion in model container [2020-11-30 01:28:15,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:28:15" (1/1) ... [2020-11-30 01:28:15,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:28:15,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:28:15,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:28:16,020 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:28:16,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:28:16,222 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:28:16,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:16 WrapperNode [2020-11-30 01:28:16,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:28:16,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:28:16,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:28:16,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:28:16,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:16" (1/1) ... [2020-11-30 01:28:16,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:16" (1/1) ... [2020-11-30 01:28:16,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:28:16,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:28:16,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:28:16,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:28:16,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:16" (1/1) ... [2020-11-30 01:28:16,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:16" (1/1) ... [2020-11-30 01:28:16,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:16" (1/1) ... [2020-11-30 01:28:16,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:16" (1/1) ... [2020-11-30 01:28:16,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:16" (1/1) ... [2020-11-30 01:28:16,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:16" (1/1) ... [2020-11-30 01:28:16,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:16" (1/1) ... [2020-11-30 01:28:16,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:28:16,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:28:16,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:28:16,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:28:16,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:28:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:28:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-30 01:28:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:28:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 01:28:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-30 01:28:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 01:28:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:28:16,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:28:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 01:28:16,874 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-30 01:28:21,482 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-11-30 01:28:21,482 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-11-30 01:28:21,504 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:28:21,505 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 01:28:21,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:28:21 BoogieIcfgContainer [2020-11-30 01:28:21,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:28:21,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:28:21,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:28:21,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:28:21,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:28:15" (1/3) ... [2020-11-30 01:28:21,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fd0e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:28:21, skipping insertion in model container [2020-11-30 01:28:21,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:16" (2/3) ... [2020-11-30 01:28:21,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fd0e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:28:21, skipping insertion in model container [2020-11-30 01:28:21,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:28:21" (3/3) ... [2020-11-30 01:28:21,529 INFO L111 eAbstractionObserver]: Analyzing ICFG s3.i [2020-11-30 01:28:21,543 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:28:21,549 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:28:21,569 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:28:21,617 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:28:21,618 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:28:21,618 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:28:21,618 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:28:21,618 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:28:21,618 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:28:21,619 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:28:21,619 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:28:21,644 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-11-30 01:28:21,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 01:28:21,652 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:21,653 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] [2020-11-30 01:28:21,654 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:21,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:21,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1457703967, now seen corresponding path program 1 times [2020-11-30 01:28:21,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:28:21,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094652090] [2020-11-30 01:28:21,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:28:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:22,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:28:22,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:22,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:22,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:28:22,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:22,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094652090] [2020-11-30 01:28:22,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:22,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 01:28:22,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404102871] [2020-11-30 01:28:22,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:22,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:28:22,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:22,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:28:22,189 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 4 states. [2020-11-30 01:28:22,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:22,396 INFO L93 Difference]: Finished difference Result 376 states and 627 transitions. [2020-11-30 01:28:22,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:28:22,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-30 01:28:22,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:22,425 INFO L225 Difference]: With dead ends: 376 [2020-11-30 01:28:22,425 INFO L226 Difference]: Without dead ends: 217 [2020-11-30 01:28:22,431 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 [2020-11-30 01:28:22,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-30 01:28:22,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-11-30 01:28:22,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-11-30 01:28:22,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 320 transitions. [2020-11-30 01:28:22,554 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 320 transitions. Word has length 24 [2020-11-30 01:28:22,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:22,555 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 320 transitions. [2020-11-30 01:28:22,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:22,556 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 320 transitions. [2020-11-30 01:28:22,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-30 01:28:22,560 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:22,561 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] [2020-11-30 01:28:22,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:28:22,778 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:22,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:22,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1495258694, now seen corresponding path program 1 times [2020-11-30 01:28:22,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:28:22,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101812136] [2020-11-30 01:28:22,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:28:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:23,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:28:23,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:23,139 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:23,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:28:23,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:23,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101812136] [2020-11-30 01:28:23,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:23,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 01:28:23,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558247178] [2020-11-30 01:28:23,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:23,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:28:23,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:23,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:28:23,183 INFO L87 Difference]: Start difference. First operand 217 states and 320 transitions. Second operand 4 states. [2020-11-30 01:28:25,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:25,439 INFO L93 Difference]: Finished difference Result 528 states and 787 transitions. [2020-11-30 01:28:25,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:28:25,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-11-30 01:28:25,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:25,449 INFO L225 Difference]: With dead ends: 528 [2020-11-30 01:28:25,450 INFO L226 Difference]: Without dead ends: 421 [2020-11-30 01:28:25,452 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 [2020-11-30 01:28:25,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-11-30 01:28:25,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2020-11-30 01:28:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-11-30 01:28:25,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 622 transitions. [2020-11-30 01:28:25,539 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 622 transitions. Word has length 41 [2020-11-30 01:28:25,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:25,544 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 622 transitions. [2020-11-30 01:28:25,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:25,545 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 622 transitions. [2020-11-30 01:28:25,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-30 01:28:25,555 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:25,556 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] [2020-11-30 01:28:25,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:28:25,779 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:25,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:25,781 INFO L82 PathProgramCache]: Analyzing trace with hash 924360661, now seen corresponding path program 1 times [2020-11-30 01:28:25,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:28:25,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942610368] [2020-11-30 01:28:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:28:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:26,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:28:26,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:26,167 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 01:28:26,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:28:26,213 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 01:28:26,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942610368] [2020-11-30 01:28:26,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:26,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 01:28:26,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004463724] [2020-11-30 01:28:26,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:26,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:28:26,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:26,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:28:26,221 INFO L87 Difference]: Start difference. First operand 421 states and 622 transitions. Second operand 4 states. [2020-11-30 01:28:28,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:28,430 INFO L93 Difference]: Finished difference Result 939 states and 1394 transitions. [2020-11-30 01:28:28,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:28:28,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-11-30 01:28:28,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:28,438 INFO L225 Difference]: With dead ends: 939 [2020-11-30 01:28:28,438 INFO L226 Difference]: Without dead ends: 628 [2020-11-30 01:28:28,445 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 [2020-11-30 01:28:28,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-11-30 01:28:28,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2020-11-30 01:28:28,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-11-30 01:28:28,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 927 transitions. [2020-11-30 01:28:28,519 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 927 transitions. Word has length 80 [2020-11-30 01:28:28,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:28,521 INFO L481 AbstractCegarLoop]: Abstraction has 628 states and 927 transitions. [2020-11-30 01:28:28,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:28,522 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 927 transitions. [2020-11-30 01:28:28,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-30 01:28:28,535 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:28,535 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] [2020-11-30 01:28:28,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 01:28:28,748 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:28,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:28,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1855651051, now seen corresponding path program 1 times [2020-11-30 01:28:28,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:28:28,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817287469] [2020-11-30 01:28:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:28:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:29,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:28:29,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:29,379 INFO L384 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 [2020-11-30 01:28:29,379 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:28:29,386 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:28:29,386 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:28:29,387 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-11-30 01:28:29,449 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-30 01:28:29,449 INFO L384 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 [2020-11-30 01:28:29,451 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:28:29,468 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:28:29,469 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:28:29,469 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-11-30 01:28:29,520 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-11-30 01:28:29,520 INFO L384 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 [2020-11-30 01:28:29,522 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:28:29,526 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:28:29,526 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:28:29,526 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-11-30 01:28:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-30 01:28:29,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:28:29,677 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-30 01:28:29,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817287469] [2020-11-30 01:28:29,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:29,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2020-11-30 01:28:29,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755359864] [2020-11-30 01:28:29,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:28:29,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:28:29,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:28:29,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:28:29,688 INFO L87 Difference]: Start difference. First operand 628 states and 927 transitions. Second operand 7 states. [2020-11-30 01:28:49,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:49,843 INFO L93 Difference]: Finished difference Result 2264 states and 3359 transitions. [2020-11-30 01:28:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:28:49,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-11-30 01:28:49,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:49,863 INFO L225 Difference]: With dead ends: 2264 [2020-11-30 01:28:49,863 INFO L226 Difference]: Without dead ends: 1643 [2020-11-30 01:28:49,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:28:49,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2020-11-30 01:28:49,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 753. [2020-11-30 01:28:49,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-11-30 01:28:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1136 transitions. [2020-11-30 01:28:49,936 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1136 transitions. Word has length 100 [2020-11-30 01:28:49,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:49,938 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 1136 transitions. [2020-11-30 01:28:49,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:28:49,938 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1136 transitions. [2020-11-30 01:28:49,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-30 01:28:49,942 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:49,943 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] [2020-11-30 01:28:50,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 01:28:50,158 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:50,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:50,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1223162519, now seen corresponding path program 1 times [2020-11-30 01:28:50,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:28:50,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895592897] [2020-11-30 01:28:50,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:28:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:50,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:28:50,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:50,733 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-30 01:28:50,734 INFO L384 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 [2020-11-30 01:28:50,735 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:28:50,751 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:28:50,751 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:28:50,751 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-11-30 01:28:50,809 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-11-30 01:28:50,810 INFO L384 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 [2020-11-30 01:28:50,813 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:28:50,816 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:28:50,817 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:28:50,817 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-11-30 01:28:50,880 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:28:50,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:28:50,928 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:28:50,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895592897] [2020-11-30 01:28:50,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:50,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-11-30 01:28:50,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897406138] [2020-11-30 01:28:50,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:28:50,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:28:50,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:28:50,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:28:50,933 INFO L87 Difference]: Start difference. First operand 753 states and 1136 transitions. Second operand 5 states. [2020-11-30 01:28:58,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:58,223 INFO L93 Difference]: Finished difference Result 1757 states and 2634 transitions. [2020-11-30 01:28:58,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:28:58,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-11-30 01:28:58,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:58,242 INFO L225 Difference]: With dead ends: 1757 [2020-11-30 01:28:58,243 INFO L226 Difference]: Without dead ends: 1011 [2020-11-30 01:28:58,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:28:58,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-11-30 01:28:58,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 873. [2020-11-30 01:28:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 873 states. [2020-11-30 01:28:58,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1341 transitions. [2020-11-30 01:28:58,305 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1341 transitions. Word has length 100 [2020-11-30 01:28:58,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:58,307 INFO L481 AbstractCegarLoop]: Abstraction has 873 states and 1341 transitions. [2020-11-30 01:28:58,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:28:58,308 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1341 transitions. [2020-11-30 01:28:58,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-11-30 01:28:58,319 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:58,319 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] [2020-11-30 01:28:58,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 01:28:58,526 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:58,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:58,526 INFO L82 PathProgramCache]: Analyzing trace with hash -517718612, now seen corresponding path program 1 times [2020-11-30 01:28:58,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:28:58,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390732520] [2020-11-30 01:28:58,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:28:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:59,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:28:59,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:59,062 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-30 01:28:59,063 INFO L384 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 [2020-11-30 01:28:59,063 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:28:59,078 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:28:59,079 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:28:59,079 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-11-30 01:28:59,132 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-11-30 01:28:59,132 INFO L384 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 [2020-11-30 01:28:59,135 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:28:59,139 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:28:59,139 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:28:59,140 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-11-30 01:28:59,171 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:28:59,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:28:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:28:59,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390732520] [2020-11-30 01:28:59,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:59,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:28:59,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146232520] [2020-11-30 01:28:59,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:28:59,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:28:59,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:28:59,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:28:59,257 INFO L87 Difference]: Start difference. First operand 873 states and 1341 transitions. Second operand 6 states. [2020-11-30 01:29:09,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:29:09,571 INFO L93 Difference]: Finished difference Result 2393 states and 3607 transitions. [2020-11-30 01:29:09,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:29:09,573 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-11-30 01:29:09,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:29:09,584 INFO L225 Difference]: With dead ends: 2393 [2020-11-30 01:29:09,584 INFO L226 Difference]: Without dead ends: 1527 [2020-11-30 01:29:09,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:29:09,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2020-11-30 01:29:09,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 928. [2020-11-30 01:29:09,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 928 states. [2020-11-30 01:29:09,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1410 transitions. [2020-11-30 01:29:09,659 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1410 transitions. Word has length 115 [2020-11-30 01:29:09,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:29:09,660 INFO L481 AbstractCegarLoop]: Abstraction has 928 states and 1410 transitions. [2020-11-30 01:29:09,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:29:09,660 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1410 transitions. [2020-11-30 01:29:09,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-11-30 01:29:09,664 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:29:09,664 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2020-11-30 01:29:09,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 01:29:09,887 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:29:09,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:09,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1265744566, now seen corresponding path program 1 times [2020-11-30 01:29:09,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:29:09,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074001082] [2020-11-30 01:29:09,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:29:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:10,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:29:10,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:10,432 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-30 01:29:10,433 INFO L384 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 [2020-11-30 01:29:10,433 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:10,443 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:10,444 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:10,444 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-11-30 01:29:10,484 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-11-30 01:29:10,484 INFO L384 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 [2020-11-30 01:29:10,498 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:10,501 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:10,502 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:10,502 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-11-30 01:29:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:29:10,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:29:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:29:10,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074001082] [2020-11-30 01:29:10,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:29:10,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:29:10,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385887445] [2020-11-30 01:29:10,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:29:10,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:29:10,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:29:10,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:29:10,630 INFO L87 Difference]: Start difference. First operand 928 states and 1410 transitions. Second operand 6 states. [2020-11-30 01:29:20,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:29:20,261 INFO L93 Difference]: Finished difference Result 2452 states and 3665 transitions. [2020-11-30 01:29:20,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:29:20,264 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-11-30 01:29:20,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:29:20,282 INFO L225 Difference]: With dead ends: 2452 [2020-11-30 01:29:20,283 INFO L226 Difference]: Without dead ends: 1531 [2020-11-30 01:29:20,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:29:20,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2020-11-30 01:29:20,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 936. [2020-11-30 01:29:20,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 936 states. [2020-11-30 01:29:20,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1408 transitions. [2020-11-30 01:29:20,349 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1408 transitions. Word has length 115 [2020-11-30 01:29:20,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:29:20,350 INFO L481 AbstractCegarLoop]: Abstraction has 936 states and 1408 transitions. [2020-11-30 01:29:20,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:29:20,350 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1408 transitions. [2020-11-30 01:29:20,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-11-30 01:29:20,353 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:29:20,354 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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] [2020-11-30 01:29:20,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 01:29:20,568 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:29:20,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:20,568 INFO L82 PathProgramCache]: Analyzing trace with hash -647023955, now seen corresponding path program 1 times [2020-11-30 01:29:20,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:29:20,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756348540] [2020-11-30 01:29:20,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:29:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:20,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:29:20,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:21,042 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-30 01:29:21,043 INFO L384 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 [2020-11-30 01:29:21,043 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:21,064 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:21,065 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:21,065 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-11-30 01:29:21,098 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-11-30 01:29:21,099 INFO L384 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 [2020-11-30 01:29:21,101 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:21,107 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:21,108 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:21,108 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-11-30 01:29:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:29:21,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:29:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:29:21,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756348540] [2020-11-30 01:29:21,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:29:21,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:29:21,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156281513] [2020-11-30 01:29:21,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:29:21,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:29:21,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:29:21,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:29:21,228 INFO L87 Difference]: Start difference. First operand 936 states and 1408 transitions. Second operand 6 states. [2020-11-30 01:29:30,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:29:30,687 INFO L93 Difference]: Finished difference Result 2419 states and 3598 transitions. [2020-11-30 01:29:30,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:29:30,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-11-30 01:29:30,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:29:30,702 INFO L225 Difference]: With dead ends: 2419 [2020-11-30 01:29:30,703 INFO L226 Difference]: Without dead ends: 1651 [2020-11-30 01:29:30,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:29:30,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2020-11-30 01:29:30,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1053. [2020-11-30 01:29:30,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1053 states. [2020-11-30 01:29:30,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1583 transitions. [2020-11-30 01:29:30,786 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1583 transitions. Word has length 115 [2020-11-30 01:29:30,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:29:30,787 INFO L481 AbstractCegarLoop]: Abstraction has 1053 states and 1583 transitions. [2020-11-30 01:29:30,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:29:30,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1583 transitions. [2020-11-30 01:29:30,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-30 01:29:30,791 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:29:30,792 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2020-11-30 01:29:31,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 01:29:31,005 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:29:31,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:31,008 INFO L82 PathProgramCache]: Analyzing trace with hash -849536469, now seen corresponding path program 1 times [2020-11-30 01:29:31,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:29:31,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123969365] [2020-11-30 01:29:31,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:29:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:31,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:29:31,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:31,515 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-30 01:29:31,516 INFO L384 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 [2020-11-30 01:29:31,517 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:31,536 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:31,536 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:31,536 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-11-30 01:29:31,579 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-11-30 01:29:31,580 INFO L384 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 [2020-11-30 01:29:31,583 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:31,587 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:31,588 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:31,588 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-11-30 01:29:31,635 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:29:31,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:29:31,694 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:29:31,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123969365] [2020-11-30 01:29:31,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:29:31,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:29:31,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235998288] [2020-11-30 01:29:31,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:29:31,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:29:31,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:29:31,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:29:31,699 INFO L87 Difference]: Start difference. First operand 1053 states and 1583 transitions. Second operand 6 states. [2020-11-30 01:29:46,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:29:46,462 INFO L93 Difference]: Finished difference Result 2669 states and 3951 transitions. [2020-11-30 01:29:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:29:46,465 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-11-30 01:29:46,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:29:46,477 INFO L225 Difference]: With dead ends: 2669 [2020-11-30 01:29:46,477 INFO L226 Difference]: Without dead ends: 1627 [2020-11-30 01:29:46,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:29:46,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2020-11-30 01:29:46,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1053. [2020-11-30 01:29:46,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1053 states. [2020-11-30 01:29:46,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1561 transitions. [2020-11-30 01:29:46,565 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1561 transitions. Word has length 116 [2020-11-30 01:29:46,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:29:46,566 INFO L481 AbstractCegarLoop]: Abstraction has 1053 states and 1561 transitions. [2020-11-30 01:29:46,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:29:46,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1561 transitions. [2020-11-30 01:29:46,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-30 01:29:46,570 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:29:46,570 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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] [2020-11-30 01:29:46,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-30 01:29:46,785 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:29:46,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:46,786 INFO L82 PathProgramCache]: Analyzing trace with hash -710278962, now seen corresponding path program 1 times [2020-11-30 01:29:46,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:29:46,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338240665] [2020-11-30 01:29:46,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:29:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:47,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:29:47,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:47,298 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-30 01:29:47,298 INFO L384 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 [2020-11-30 01:29:47,299 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:47,310 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:47,310 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:47,310 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-11-30 01:29:47,337 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-11-30 01:29:47,337 INFO L384 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 [2020-11-30 01:29:47,341 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:47,343 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:47,344 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:47,344 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-11-30 01:29:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:29:47,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:29:47,427 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:29:47,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338240665] [2020-11-30 01:29:47,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:29:47,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:29:47,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229182536] [2020-11-30 01:29:47,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:29:47,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:29:47,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:29:47,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:29:47,430 INFO L87 Difference]: Start difference. First operand 1053 states and 1561 transitions. Second operand 6 states. [2020-11-30 01:29:57,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:29:57,099 INFO L93 Difference]: Finished difference Result 2484 states and 3650 transitions. [2020-11-30 01:29:57,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:29:57,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-11-30 01:29:57,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:29:57,112 INFO L225 Difference]: With dead ends: 2484 [2020-11-30 01:29:57,113 INFO L226 Difference]: Without dead ends: 1620 [2020-11-30 01:29:57,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:29:57,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2020-11-30 01:29:57,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1064. [2020-11-30 01:29:57,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-11-30 01:29:57,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1567 transitions. [2020-11-30 01:29:57,183 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1567 transitions. Word has length 116 [2020-11-30 01:29:57,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:29:57,184 INFO L481 AbstractCegarLoop]: Abstraction has 1064 states and 1567 transitions. [2020-11-30 01:29:57,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:29:57,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1567 transitions. [2020-11-30 01:29:57,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-11-30 01:29:57,188 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:29:57,188 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2020-11-30 01:29:57,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-30 01:29:57,402 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:29:57,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:57,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1134529903, now seen corresponding path program 1 times [2020-11-30 01:29:57,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:29:57,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621848089] [2020-11-30 01:29:57,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:29:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:57,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:29:57,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:57,895 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-30 01:29:57,896 INFO L384 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 [2020-11-30 01:29:57,896 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:57,912 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:57,912 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:57,912 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-11-30 01:29:57,947 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-11-30 01:29:57,947 INFO L384 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 [2020-11-30 01:29:57,948 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:57,951 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:57,951 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:57,951 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-11-30 01:29:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:29:57,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:29:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:29:58,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621848089] [2020-11-30 01:29:58,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:29:58,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:29:58,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608821932] [2020-11-30 01:29:58,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:29:58,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:29:58,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:29:58,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:29:58,053 INFO L87 Difference]: Start difference. First operand 1064 states and 1567 transitions. Second operand 6 states. [2020-11-30 01:30:10,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:30:10,051 INFO L93 Difference]: Finished difference Result 2672 states and 3893 transitions. [2020-11-30 01:30:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:30:10,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-11-30 01:30:10,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:30:10,062 INFO L225 Difference]: With dead ends: 2672 [2020-11-30 01:30:10,062 INFO L226 Difference]: Without dead ends: 1619 [2020-11-30 01:30:10,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:30:10,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2020-11-30 01:30:10,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1064. [2020-11-30 01:30:10,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-11-30 01:30:10,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1545 transitions. [2020-11-30 01:30:10,131 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1545 transitions. Word has length 117 [2020-11-30 01:30:10,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:30:10,132 INFO L481 AbstractCegarLoop]: Abstraction has 1064 states and 1545 transitions. [2020-11-30 01:30:10,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:30:10,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1545 transitions. [2020-11-30 01:30:10,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-11-30 01:30:10,136 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:30:10,136 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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] [2020-11-30 01:30:10,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-30 01:30:10,350 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:30:10,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:10,351 INFO L82 PathProgramCache]: Analyzing trace with hash 182595248, now seen corresponding path program 1 times [2020-11-30 01:30:10,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:30:10,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20878802] [2020-11-30 01:30:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:30:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:10,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:30:10,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:30:10,907 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-30 01:30:10,908 INFO L384 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 [2020-11-30 01:30:10,908 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:30:10,920 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:30:10,920 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:30:10,920 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-11-30 01:30:10,943 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-11-30 01:30:10,943 INFO L384 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 [2020-11-30 01:30:10,946 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:30:10,959 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:30:10,959 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:30:10,959 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-11-30 01:30:10,982 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:30:10,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:30:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:30:11,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20878802] [2020-11-30 01:30:11,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:30:11,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:30:11,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78963811] [2020-11-30 01:30:11,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:30:11,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:30:11,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:30:11,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:30:11,037 INFO L87 Difference]: Start difference. First operand 1064 states and 1545 transitions. Second operand 6 states. [2020-11-30 01:30:21,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:30:21,147 INFO L93 Difference]: Finished difference Result 2627 states and 3794 transitions. [2020-11-30 01:30:21,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:30:21,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-11-30 01:30:21,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:30:21,158 INFO L225 Difference]: With dead ends: 2627 [2020-11-30 01:30:21,158 INFO L226 Difference]: Without dead ends: 1574 [2020-11-30 01:30:21,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:30:21,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2020-11-30 01:30:21,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1064. [2020-11-30 01:30:21,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-11-30 01:30:21,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1523 transitions. [2020-11-30 01:30:21,238 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1523 transitions. Word has length 118 [2020-11-30 01:30:21,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:30:21,239 INFO L481 AbstractCegarLoop]: Abstraction has 1064 states and 1523 transitions. [2020-11-30 01:30:21,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:30:21,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1523 transitions. [2020-11-30 01:30:21,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-11-30 01:30:21,242 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:30:21,243 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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] [2020-11-30 01:30:21,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-11-30 01:30:21,462 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:30:21,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:21,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1828816845, now seen corresponding path program 1 times [2020-11-30 01:30:21,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:30:21,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165791855] [2020-11-30 01:30:21,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:30:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:21,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:30:21,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:30:21,925 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-30 01:30:21,926 INFO L384 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 [2020-11-30 01:30:21,926 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:30:21,938 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:30:21,939 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:30:21,939 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-11-30 01:30:21,963 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-11-30 01:30:21,963 INFO L384 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 [2020-11-30 01:30:21,965 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:30:21,967 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:30:21,968 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:30:21,968 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-11-30 01:30:22,001 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:30:22,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:30:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:30:22,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1165791855] [2020-11-30 01:30:22,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:30:22,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:30:22,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353795823] [2020-11-30 01:30:22,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:30:22,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:30:22,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:30:22,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:30:22,113 INFO L87 Difference]: Start difference. First operand 1064 states and 1523 transitions. Second operand 6 states. [2020-11-30 01:30:30,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:30:30,078 INFO L93 Difference]: Finished difference Result 2733 states and 3896 transitions. [2020-11-30 01:30:30,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:30:30,079 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-11-30 01:30:30,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:30:30,089 INFO L225 Difference]: With dead ends: 2733 [2020-11-30 01:30:30,090 INFO L226 Difference]: Without dead ends: 1680 [2020-11-30 01:30:30,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:30:30,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2020-11-30 01:30:30,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1164. [2020-11-30 01:30:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1164 states. [2020-11-30 01:30:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1647 transitions. [2020-11-30 01:30:30,174 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1647 transitions. Word has length 118 [2020-11-30 01:30:30,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:30:30,175 INFO L481 AbstractCegarLoop]: Abstraction has 1164 states and 1647 transitions. [2020-11-30 01:30:30,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:30:30,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1647 transitions. [2020-11-30 01:30:30,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-11-30 01:30:30,179 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:30:30,179 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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] [2020-11-30 01:30:30,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-11-30 01:30:30,398 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:30:30,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:30,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1012937024, now seen corresponding path program 1 times [2020-11-30 01:30:30,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:30:30,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678678357] [2020-11-30 01:30:30,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:30:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:30,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:30:30,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:30:30,900 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-30 01:30:30,900 INFO L384 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 [2020-11-30 01:30:30,900 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:30:30,911 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:30:30,911 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:30:30,912 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-11-30 01:30:30,942 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-11-30 01:30:30,942 INFO L384 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 [2020-11-30 01:30:30,943 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:30:30,945 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:30:30,946 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:30:30,946 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-11-30 01:30:30,970 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:30:30,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:30:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:30:31,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678678357] [2020-11-30 01:30:31,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:30:31,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:30:31,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31752591] [2020-11-30 01:30:31,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:30:31,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:30:31,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:30:31,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:30:31,042 INFO L87 Difference]: Start difference. First operand 1164 states and 1647 transitions. Second operand 6 states. [2020-11-30 01:30:42,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:30:42,493 INFO L93 Difference]: Finished difference Result 2787 states and 3940 transitions. [2020-11-30 01:30:42,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:30:42,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-11-30 01:30:42,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:30:42,518 INFO L225 Difference]: With dead ends: 2787 [2020-11-30 01:30:42,518 INFO L226 Difference]: Without dead ends: 1639 [2020-11-30 01:30:42,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:30:42,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2020-11-30 01:30:42,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1180. [2020-11-30 01:30:42,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1180 states. [2020-11-30 01:30:42,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1668 transitions. [2020-11-30 01:30:42,605 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1668 transitions. Word has length 119 [2020-11-30 01:30:42,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:30:42,605 INFO L481 AbstractCegarLoop]: Abstraction has 1180 states and 1668 transitions. [2020-11-30 01:30:42,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:30:42,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1668 transitions. [2020-11-30 01:30:42,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-11-30 01:30:42,609 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:30:42,609 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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] [2020-11-30 01:30:42,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-11-30 01:30:42,826 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:30:42,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:42,826 INFO L82 PathProgramCache]: Analyzing trace with hash 405159276, now seen corresponding path program 1 times [2020-11-30 01:30:42,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:30:42,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685337659] [2020-11-30 01:30:42,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:30:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:43,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:30:43,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:30:43,282 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-30 01:30:43,283 INFO L384 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 [2020-11-30 01:30:43,283 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:30:43,293 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:30:43,294 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:30:43,294 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:19 [2020-11-30 01:30:43,320 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-11-30 01:30:43,321 INFO L384 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 [2020-11-30 01:30:43,333 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:30:43,336 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:30:43,336 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:30:43,336 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-11-30 01:30:43,362 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:30:43,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:30:43,421 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 01:30:43,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685337659] [2020-11-30 01:30:43,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:30:43,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:30:43,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537308403] [2020-11-30 01:30:43,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:30:43,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:30:43,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:30:43,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:30:43,422 INFO L87 Difference]: Start difference. First operand 1180 states and 1668 transitions. Second operand 6 states. [2020-11-30 01:30:54,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:30:54,739 INFO L93 Difference]: Finished difference Result 2784 states and 3926 transitions. [2020-11-30 01:30:54,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:30:54,740 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-11-30 01:30:54,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:30:54,750 INFO L225 Difference]: With dead ends: 2784 [2020-11-30 01:30:54,750 INFO L226 Difference]: Without dead ends: 1620 [2020-11-30 01:30:54,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:30:54,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2020-11-30 01:30:54,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1182. [2020-11-30 01:30:54,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2020-11-30 01:30:54,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1655 transitions. [2020-11-30 01:30:54,838 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1655 transitions. Word has length 119 [2020-11-30 01:30:54,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:30:54,838 INFO L481 AbstractCegarLoop]: Abstraction has 1182 states and 1655 transitions. [2020-11-30 01:30:54,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:30:54,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1655 transitions. [2020-11-30 01:30:54,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-11-30 01:30:54,842 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:30:54,842 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 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] [2020-11-30 01:30:55,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-11-30 01:30:55,056 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:30:55,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:55,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1820752595, now seen corresponding path program 1 times [2020-11-30 01:30:55,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:30:55,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955262626] [2020-11-30 01:30:55,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:30:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:55,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:30:55,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:30:55,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 01:30:55,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 01:30:55,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 01:30:55,720 INFO L350 Elim1Store]: treesize reduction 18, result has 64.7 percent of original size [2020-11-30 01:30:55,720 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 58 [2020-11-30 01:30:55,721 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:30:55,788 INFO L625 ElimStorePlain]: treesize reduction 12, result has 80.3 percent of original size [2020-11-30 01:30:55,794 INFO L545 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. [2020-11-30 01:30:55,794 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:97, output treesize:29 [2020-11-30 01:30:55,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 01:30:55,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 01:30:55,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 01:30:55,898 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:30:55,898 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 34 [2020-11-30 01:30:55,901 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:30:55,912 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:30:55,913 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 01:30:55,913 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:20 [2020-11-30 01:30:55,938 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:30:55,938 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2020-11-30 01:30:55,953 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:30:55,955 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:30:55,955 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:30:55,956 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:3 [2020-11-30 01:30:55,984 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-11-30 01:30:55,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:30:56,067 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-11-30 01:30:56,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955262626] [2020-11-30 01:30:56,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:30:56,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-11-30 01:30:56,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790188713] [2020-11-30 01:30:56,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:30:56,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:30:56,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:30:56,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:30:56,070 INFO L87 Difference]: Start difference. First operand 1182 states and 1655 transitions. Second operand 5 states. [2020-11-30 01:30:59,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:30:59,255 INFO L93 Difference]: Finished difference Result 2347 states and 3282 transitions. [2020-11-30 01:30:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:30:59,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-11-30 01:30:59,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:30:59,263 INFO L225 Difference]: With dead ends: 2347 [2020-11-30 01:30:59,263 INFO L226 Difference]: Without dead ends: 1175 [2020-11-30 01:30:59,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 237 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:30:59,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2020-11-30 01:30:59,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1174. [2020-11-30 01:30:59,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2020-11-30 01:30:59,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1640 transitions. [2020-11-30 01:30:59,350 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1640 transitions. Word has length 122 [2020-11-30 01:30:59,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:30:59,350 INFO L481 AbstractCegarLoop]: Abstraction has 1174 states and 1640 transitions. [2020-11-30 01:30:59,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:30:59,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1640 transitions. [2020-11-30 01:30:59,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-11-30 01:30:59,356 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:30:59,356 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] [2020-11-30 01:30:59,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-11-30 01:30:59,579 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:30:59,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:59,579 INFO L82 PathProgramCache]: Analyzing trace with hash -272550210, now seen corresponding path program 1 times [2020-11-30 01:30:59,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:30:59,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934636733] [2020-11-30 01:30:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/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 [2020-11-30 01:31:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:31:00,308 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:31:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:31:00,887 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:31:01,267 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 01:31:01,268 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:31:01,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-11-30 01:31:01,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:31:01 BoogieIcfgContainer [2020-11-30 01:31:01,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:31:01,744 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:31:01,744 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:31:01,744 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:31:01,745 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:28:21" (3/4) ... [2020-11-30 01:31:01,747 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:31:01,916 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e4c9ca9d-c6cc-41bf-b313-a96345d68a42/bin/uautomizer/witness.graphml [2020-11-30 01:31:01,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:31:01,921 INFO L168 Benchmark]: Toolchain (without parser) took 166748.92 ms. Allocated memory was 58.7 MB in the beginning and 109.1 MB in the end (delta: 50.3 MB). Free memory was 35.2 MB in the beginning and 26.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 59.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:31:01,922 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 58.7 MB. Free memory is still 40.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:31:01,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1052.50 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 35.0 MB in the beginning and 37.1 MB in the end (delta: -2.1 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:31:01,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 154.00 ms. Allocated memory is still 71.3 MB. Free memory was 37.1 MB in the beginning and 47.8 MB in the end (delta: -10.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:31:01,923 INFO L168 Benchmark]: Boogie Preprocessor took 119.50 ms. Allocated memory is still 71.3 MB. Free memory was 47.8 MB in the beginning and 41.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:31:01,923 INFO L168 Benchmark]: RCFGBuilder took 5011.89 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 41.0 MB in the beginning and 55.7 MB in the end (delta: -14.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:31:01,924 INFO L168 Benchmark]: TraceAbstraction took 160227.44 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 55.3 MB in the beginning and 45.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 54.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:31:01,924 INFO L168 Benchmark]: Witness Printer took 172.73 ms. Allocated memory is still 109.1 MB. Free memory was 45.1 MB in the beginning and 26.8 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 01:31:01,929 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 58.7 MB. Free memory is still 40.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1052.50 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 35.0 MB in the beginning and 37.1 MB in the end (delta: -2.1 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 154.00 ms. Allocated memory is still 71.3 MB. Free memory was 37.1 MB in the beginning and 47.8 MB in the end (delta: -10.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 119.50 ms. Allocated memory is still 71.3 MB. Free memory was 47.8 MB in the beginning and 41.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5011.89 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 41.0 MB in the beginning and 55.7 MB in the end (delta: -14.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 160227.44 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 55.3 MB in the beginning and 45.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 54.7 MB. Max. memory is 16.1 GB. * Witness Printer took 172.73 ms. Allocated memory is still 109.1 MB. Free memory was 45.1 MB in the beginning and 26.8 MB in the end (delta: 18.3 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: [L1041] static int init = 1; [L1042] static SSL_METHOD SSLv3_client_data ; VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1064] SSL *s ; [L1068] s = malloc (sizeof (SSL)) [L1069] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1070] s->ctx = malloc(sizeof(SSL_CTX)) [L1071] s->state = 12292 [L1072] s->version = __VERIFIER_nondet_int() [L1079] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1080] unsigned long tmp ; [L1081] unsigned long l ; [L1082] long num1 ; [L1083] void (*cb)() ; [L1084] int ret ; [L1085] int new_state ; [L1086] int state ; [L1087] int skip ; [L1088] int *tmp___0 ; [L1089] int tmp___1 = __VERIFIER_nondet_int(); [L1090] int tmp___2 = __VERIFIER_nondet_int(); [L1091] int tmp___3 ; [L1092] int tmp___4 ; [L1093] int tmp___5 ; [L1094] int tmp___6 ; [L1095] int tmp___7 ; [L1096] int tmp___8 ; [L1097] long tmp___9 ; [L1099] int blastFlag ; [L1102] blastFlag = 0 [L1103] s->state = 12292 [L1104] s->hit = __VERIFIER_nondet_int() [L1106] tmp = __VERIFIER_nondet_int() [L1107] cb = (void (*)())((void *)0) [L1108] ret = -1 [L1109] skip = 0 [L1110] tmp___0 = (int*)malloc(sizeof(int)) [L1111] *tmp___0 = 0 [L1112] EXPR s->info_callback VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1112] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1113] EXPR s->info_callback [L1113] cb = s->info_callback [L1121] EXPR s->in_handshake [L1121] s->in_handshake += 1 [L1122] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1132] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1135] COND TRUE s->state == 12292 [L1238] s->new_session = 1 [L1239] s->state = 4096 [L1240] EXPR s->ctx [L1240] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1240] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1245] s->server = 0 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1246] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1251] EXPR s->version VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1251] COND FALSE !((s->version & 65280) != 768) [L1257] s->type = 4096 [L1258] EXPR s->init_buf VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1258] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1270] tmp___4 = __VERIFIER_nondet_int() [L1271] COND FALSE !(! tmp___4) [L1277] tmp___5 = __VERIFIER_nondet_int() [L1278] COND FALSE !(! tmp___5) [L1284] s->state = 4368 [L1285] EXPR s->ctx [L1285] EXPR (s->ctx)->stats.sess_connect [L1285] (s->ctx)->stats.sess_connect += 1 [L1286] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1132] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1150] COND TRUE s->state == 4368 [L1290] s->shutdown = 0 [L1291] ret = __VERIFIER_nondet_int() [L1292] COND TRUE blastFlag == 0 [L1293] blastFlag = 1 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1297] COND FALSE !(ret <= 0) [L1302] s->state = 4384 [L1303] s->init_num = 0 [L1304] EXPR s->bbio [L1304] EXPR s->wbio VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1304] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1132] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1156] COND TRUE s->state == 4384 [L1312] ret = __VERIFIER_nondet_int() [L1313] COND TRUE blastFlag == 1 [L1314] blastFlag = 2 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1318] COND FALSE !(ret <= 0) [L1323] s->hit VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1323] COND FALSE !(s->hit) [L1326] s->state = 4400 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1328] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1132] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1156] COND FALSE !(s->state == 4384) [L1159] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1159] COND FALSE !(s->state == 4385) [L1162] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1162] COND TRUE s->state == 4400 [L1332] EXPR s->s3 [L1332] EXPR (s->s3)->tmp.new_cipher [L1332] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1332] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1335] ret = __VERIFIER_nondet_int() [L1336] COND TRUE blastFlag == 2 [L1337] blastFlag = 3 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1341] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1347] s->state = 4416 [L1348] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1132] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1156] COND FALSE !(s->state == 4384) [L1159] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1159] COND FALSE !(s->state == 4385) [L1162] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1162] COND FALSE !(s->state == 4400) [L1165] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1165] COND FALSE !(s->state == 4401) [L1168] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1168] COND TRUE s->state == 4416 [L1352] ret = __VERIFIER_nondet_int() [L1353] COND TRUE blastFlag == 3 [L1354] blastFlag = 4 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1358] COND FALSE !(ret <= 0) [L1363] s->state = 4432 [L1364] s->init_num = 0 [L1365] tmp___6 = __VERIFIER_nondet_int() [L1366] COND FALSE !(! tmp___6) VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1132] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1156] COND FALSE !(s->state == 4384) [L1159] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1159] COND FALSE !(s->state == 4385) [L1162] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1162] COND FALSE !(s->state == 4400) [L1165] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1165] COND FALSE !(s->state == 4401) [L1168] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1168] COND FALSE !(s->state == 4416) [L1171] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1171] COND FALSE !(s->state == 4417) [L1174] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1174] COND TRUE s->state == 4432 [L1375] ret = __VERIFIER_nondet_int() [L1376] COND FALSE !(blastFlag == 5) VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1381] COND FALSE !(ret <= 0) [L1386] s->state = 4448 [L1387] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1132] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1156] COND FALSE !(s->state == 4384) [L1159] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1159] COND FALSE !(s->state == 4385) [L1162] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1162] COND FALSE !(s->state == 4400) [L1165] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1165] COND FALSE !(s->state == 4401) [L1168] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1168] COND FALSE !(s->state == 4416) [L1171] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1171] COND FALSE !(s->state == 4417) [L1174] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1174] COND FALSE !(s->state == 4432) [L1177] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1177] COND FALSE !(s->state == 4433) [L1180] EXPR s->state VAL [init=1, SSLv3_client_data={-2147418081:0}] [L1180] COND TRUE s->state == 4448 [L1391] ret = __VERIFIER_nondet_int() [L1392] COND TRUE blastFlag == 4 VAL [init=1, SSLv3_client_data={-2147418081:0}] [L3] __assert_fail("0", "s3.i", 3, "reach_error") VAL [init=1, SSLv3_client_data={-2147418081:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 159.8s, OverallIterations: 17, TraceHistogramMax: 7, AutomataDifference: 142.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3528 SDtfs, 2899 SDslu, 7445 SDs, 0 SdLazy, 5643 SolverSat, 497 SolverUnsat, 31 SolverUnknown, 0 SolverNotchecked, 133.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3262 GetRequests, 3178 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1182occurred 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: 1.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 6429 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 5.1s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 1772 NumberOfCodeBlocks, 1772 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 3238 ConstructedInterpolants, 5 QuantifiedInterpolants, 824588 SizeOfPredicates, 82 NumberOfNonLiveVariables, 4573 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 32 InterpolantComputations, 32 PerfectInterpolantSequences, 4372/4372 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...