./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c --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_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/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 77ee66abd2a03836cba1056e8b8f081ca3f237e1 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/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 77ee66abd2a03836cba1056e8b8f081ca3f237e1 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-29 19:41:04,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:41:04,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:41:04,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:41:04,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:41:04,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:41:04,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:41:04,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:41:04,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:41:04,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:41:04,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:41:04,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:41:04,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:41:04,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:41:04,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:41:04,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:41:04,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:41:04,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:41:04,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:41:04,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:41:04,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:41:04,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:41:04,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:41:04,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:41:04,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:41:04,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:41:04,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:41:04,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:41:04,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:41:04,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:41:04,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:41:04,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:41:04,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:41:04,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:41:04,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:41:04,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:41:04,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:41:04,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:41:04,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:41:04,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:41:04,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:41:04,979 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:41:05,028 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:41:05,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:41:05,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:41:05,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:41:05,032 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:41:05,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:41:05,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:41:05,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:41:05,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:41:05,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:41:05,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:41:05,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:41:05,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:41:05,036 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:41:05,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:41:05,036 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:41:05,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:41:05,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:41:05,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:41:05,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:41:05,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:41:05,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:41:05,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:41:05,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:41:05,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:41:05,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:41:05,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:41:05,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:41:05,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:41:05,040 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_852e06d4-7d05-4e63-9920-cc63d5ca28ea/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77ee66abd2a03836cba1056e8b8f081ca3f237e1 [2020-11-29 19:41:05,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:41:05,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:41:05,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:41:05,501 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:41:05,502 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:41:05,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2020-11-29 19:41:05,593 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/data/dde2ba7f5/58d3352a83c7486a968e2d7045e71652/FLAGe28b57643 [2020-11-29 19:41:06,444 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:41:06,444 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2020-11-29 19:41:06,475 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/data/dde2ba7f5/58d3352a83c7486a968e2d7045e71652/FLAGe28b57643 [2020-11-29 19:41:06,591 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/data/dde2ba7f5/58d3352a83c7486a968e2d7045e71652 [2020-11-29 19:41:06,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:41:06,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:41:06,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:41:06,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:41:06,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:41:06,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:41:06" (1/1) ... [2020-11-29 19:41:06,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8feb36f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:06, skipping insertion in model container [2020-11-29 19:41:06,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:41:06" (1/1) ... [2020-11-29 19:41:06,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:41:06,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:41:07,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:41:07,484 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:41:07,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:41:07,683 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:41:07,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:07 WrapperNode [2020-11-29 19:41:07,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:41:07,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:41:07,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:41:07,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:41:07,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:07" (1/1) ... [2020-11-29 19:41:07,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:07" (1/1) ... [2020-11-29 19:41:07,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:41:07,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:41:07,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:41:07,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:41:07,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:07" (1/1) ... [2020-11-29 19:41:07,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:07" (1/1) ... [2020-11-29 19:41:07,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:07" (1/1) ... [2020-11-29 19:41:07,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:07" (1/1) ... [2020-11-29 19:41:07,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:07" (1/1) ... [2020-11-29 19:41:07,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:07" (1/1) ... [2020-11-29 19:41:07,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:07" (1/1) ... [2020-11-29 19:41:07,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:41:07,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:41:07,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:41:07,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:41:07,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/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 [2020-11-29 19:41:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 19:41:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:41:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:41:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:41:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 19:41:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:41:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 19:41:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:41:08,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:41:08,547 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 19:41:09,918 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-11-29 19:41:09,918 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-11-29 19:41:09,936 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:41:09,937 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 19:41:09,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:41:09 BoogieIcfgContainer [2020-11-29 19:41:09,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:41:09,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:41:09,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:41:09,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:41:09,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:41:06" (1/3) ... [2020-11-29 19:41:09,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73edd6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:41:09, skipping insertion in model container [2020-11-29 19:41:09,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:07" (2/3) ... [2020-11-29 19:41:09,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73edd6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:41:09, skipping insertion in model container [2020-11-29 19:41:09,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:41:09" (3/3) ... [2020-11-29 19:41:09,953 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.01.i.cil-2.c [2020-11-29 19:41:09,964 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:41:09,968 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:41:09,979 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:41:10,009 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:41:10,010 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:41:10,010 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:41:10,010 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:41:10,010 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:41:10,011 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:41:10,011 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:41:10,011 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:41:10,037 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2020-11-29 19:41:10,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 19:41:10,058 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:10,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:10,059 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:10,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:10,066 INFO L82 PathProgramCache]: Analyzing trace with hash 522834703, now seen corresponding path program 1 times [2020-11-29 19:41:10,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:10,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339996922] [2020-11-29 19:41:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:10,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:10,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339996922] [2020-11-29 19:41:10,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:10,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:10,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811213017] [2020-11-29 19:41:10,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:10,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:10,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:10,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:10,702 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 4 states. [2020-11-29 19:41:11,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:11,451 INFO L93 Difference]: Finished difference Result 318 states and 531 transitions. [2020-11-29 19:41:11,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:11,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-11-29 19:41:11,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:11,476 INFO L225 Difference]: With dead ends: 318 [2020-11-29 19:41:11,478 INFO L226 Difference]: Without dead ends: 160 [2020-11-29 19:41:11,483 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 [2020-11-29 19:41:11,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-29 19:41:11,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 143. [2020-11-29 19:41:11,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-29 19:41:11,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 219 transitions. [2020-11-29 19:41:11,570 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 219 transitions. Word has length 45 [2020-11-29 19:41:11,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:11,570 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 219 transitions. [2020-11-29 19:41:11,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 219 transitions. [2020-11-29 19:41:11,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-29 19:41:11,582 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:11,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:11,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:41:11,585 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:11,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:11,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1923702817, now seen corresponding path program 1 times [2020-11-29 19:41:11,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:11,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282516687] [2020-11-29 19:41:11,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:11,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:11,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282516687] [2020-11-29 19:41:11,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:11,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:11,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013660325] [2020-11-29 19:41:11,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:11,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:11,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:11,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:11,783 INFO L87 Difference]: Start difference. First operand 143 states and 219 transitions. Second operand 4 states. [2020-11-29 19:41:12,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:12,383 INFO L93 Difference]: Finished difference Result 284 states and 429 transitions. [2020-11-29 19:41:12,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:12,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-11-29 19:41:12,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:12,387 INFO L225 Difference]: With dead ends: 284 [2020-11-29 19:41:12,388 INFO L226 Difference]: Without dead ends: 160 [2020-11-29 19:41:12,389 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 [2020-11-29 19:41:12,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-29 19:41:12,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 143. [2020-11-29 19:41:12,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-29 19:41:12,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 218 transitions. [2020-11-29 19:41:12,406 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 218 transitions. Word has length 58 [2020-11-29 19:41:12,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:12,407 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 218 transitions. [2020-11-29 19:41:12,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:12,407 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 218 transitions. [2020-11-29 19:41:12,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-29 19:41:12,410 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:12,410 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:12,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:41:12,411 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:12,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:12,412 INFO L82 PathProgramCache]: Analyzing trace with hash -2009873572, now seen corresponding path program 1 times [2020-11-29 19:41:12,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:12,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112457529] [2020-11-29 19:41:12,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:12,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112457529] [2020-11-29 19:41:12,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:12,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:12,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772479238] [2020-11-29 19:41:12,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:12,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:12,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:12,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:12,628 INFO L87 Difference]: Start difference. First operand 143 states and 218 transitions. Second operand 4 states. [2020-11-29 19:41:13,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:13,142 INFO L93 Difference]: Finished difference Result 282 states and 426 transitions. [2020-11-29 19:41:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:13,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-11-29 19:41:13,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:13,145 INFO L225 Difference]: With dead ends: 282 [2020-11-29 19:41:13,145 INFO L226 Difference]: Without dead ends: 158 [2020-11-29 19:41:13,146 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 [2020-11-29 19:41:13,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-29 19:41:13,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 143. [2020-11-29 19:41:13,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-29 19:41:13,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 217 transitions. [2020-11-29 19:41:13,171 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 217 transitions. Word has length 59 [2020-11-29 19:41:13,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:13,171 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 217 transitions. [2020-11-29 19:41:13,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:13,171 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 217 transitions. [2020-11-29 19:41:13,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-29 19:41:13,173 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:13,174 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:13,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:41:13,174 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:13,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:13,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1439655328, now seen corresponding path program 1 times [2020-11-29 19:41:13,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:13,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441458922] [2020-11-29 19:41:13,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:13,333 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:13,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441458922] [2020-11-29 19:41:13,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:13,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:13,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722250732] [2020-11-29 19:41:13,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:13,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:13,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:13,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:13,336 INFO L87 Difference]: Start difference. First operand 143 states and 217 transitions. Second operand 4 states. [2020-11-29 19:41:13,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:13,820 INFO L93 Difference]: Finished difference Result 281 states and 424 transitions. [2020-11-29 19:41:13,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:13,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-11-29 19:41:13,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:13,823 INFO L225 Difference]: With dead ends: 281 [2020-11-29 19:41:13,823 INFO L226 Difference]: Without dead ends: 157 [2020-11-29 19:41:13,824 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 [2020-11-29 19:41:13,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-29 19:41:13,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 143. [2020-11-29 19:41:13,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-29 19:41:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 216 transitions. [2020-11-29 19:41:13,834 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 216 transitions. Word has length 59 [2020-11-29 19:41:13,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:13,835 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 216 transitions. [2020-11-29 19:41:13,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:13,835 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 216 transitions. [2020-11-29 19:41:13,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-29 19:41:13,837 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:13,837 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:13,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:41:13,838 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:13,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:13,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1630534542, now seen corresponding path program 1 times [2020-11-29 19:41:13,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:13,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92463397] [2020-11-29 19:41:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:13,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92463397] [2020-11-29 19:41:13,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:13,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:13,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099626125] [2020-11-29 19:41:13,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:13,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:13,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:13,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:13,988 INFO L87 Difference]: Start difference. First operand 143 states and 216 transitions. Second operand 4 states. [2020-11-29 19:41:14,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:14,486 INFO L93 Difference]: Finished difference Result 280 states and 422 transitions. [2020-11-29 19:41:14,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:14,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-11-29 19:41:14,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:14,488 INFO L225 Difference]: With dead ends: 280 [2020-11-29 19:41:14,488 INFO L226 Difference]: Without dead ends: 156 [2020-11-29 19:41:14,489 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 [2020-11-29 19:41:14,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-11-29 19:41:14,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2020-11-29 19:41:14,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-29 19:41:14,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 215 transitions. [2020-11-29 19:41:14,504 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 215 transitions. Word has length 60 [2020-11-29 19:41:14,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:14,506 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 215 transitions. [2020-11-29 19:41:14,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:14,506 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 215 transitions. [2020-11-29 19:41:14,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-29 19:41:14,513 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:14,513 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:14,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 19:41:14,513 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:14,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:14,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1839064698, now seen corresponding path program 1 times [2020-11-29 19:41:14,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:14,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770485742] [2020-11-29 19:41:14,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:14,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:14,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770485742] [2020-11-29 19:41:14,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:14,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:14,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785579212] [2020-11-29 19:41:14,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:14,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:14,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:14,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:14,646 INFO L87 Difference]: Start difference. First operand 143 states and 215 transitions. Second operand 4 states. [2020-11-29 19:41:15,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:15,118 INFO L93 Difference]: Finished difference Result 280 states and 421 transitions. [2020-11-29 19:41:15,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:15,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-11-29 19:41:15,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:15,121 INFO L225 Difference]: With dead ends: 280 [2020-11-29 19:41:15,121 INFO L226 Difference]: Without dead ends: 156 [2020-11-29 19:41:15,122 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 [2020-11-29 19:41:15,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-11-29 19:41:15,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2020-11-29 19:41:15,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-29 19:41:15,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 214 transitions. [2020-11-29 19:41:15,137 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 214 transitions. Word has length 60 [2020-11-29 19:41:15,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:15,139 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 214 transitions. [2020-11-29 19:41:15,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:15,139 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 214 transitions. [2020-11-29 19:41:15,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-29 19:41:15,145 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:15,146 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:15,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 19:41:15,147 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:15,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:15,150 INFO L82 PathProgramCache]: Analyzing trace with hash 476213239, now seen corresponding path program 1 times [2020-11-29 19:41:15,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:15,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096253376] [2020-11-29 19:41:15,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:15,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096253376] [2020-11-29 19:41:15,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:15,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:15,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102874798] [2020-11-29 19:41:15,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:15,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:15,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:15,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:15,292 INFO L87 Difference]: Start difference. First operand 143 states and 214 transitions. Second operand 4 states. [2020-11-29 19:41:15,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:15,741 INFO L93 Difference]: Finished difference Result 280 states and 420 transitions. [2020-11-29 19:41:15,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:15,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-11-29 19:41:15,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:15,744 INFO L225 Difference]: With dead ends: 280 [2020-11-29 19:41:15,744 INFO L226 Difference]: Without dead ends: 156 [2020-11-29 19:41:15,745 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 [2020-11-29 19:41:15,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-11-29 19:41:15,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2020-11-29 19:41:15,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-29 19:41:15,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 213 transitions. [2020-11-29 19:41:15,752 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 213 transitions. Word has length 61 [2020-11-29 19:41:15,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:15,753 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 213 transitions. [2020-11-29 19:41:15,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:15,753 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 213 transitions. [2020-11-29 19:41:15,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-29 19:41:15,755 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:15,755 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:15,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 19:41:15,756 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:15,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:15,757 INFO L82 PathProgramCache]: Analyzing trace with hash -25209675, now seen corresponding path program 1 times [2020-11-29 19:41:15,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:15,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735033495] [2020-11-29 19:41:15,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:15,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:15,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735033495] [2020-11-29 19:41:15,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:15,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:15,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849326269] [2020-11-29 19:41:15,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:15,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:15,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:15,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:15,868 INFO L87 Difference]: Start difference. First operand 143 states and 213 transitions. Second operand 4 states. [2020-11-29 19:41:16,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:16,381 INFO L93 Difference]: Finished difference Result 280 states and 419 transitions. [2020-11-29 19:41:16,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:16,382 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-11-29 19:41:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:16,384 INFO L225 Difference]: With dead ends: 280 [2020-11-29 19:41:16,384 INFO L226 Difference]: Without dead ends: 156 [2020-11-29 19:41:16,385 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 [2020-11-29 19:41:16,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-11-29 19:41:16,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2020-11-29 19:41:16,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-29 19:41:16,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 212 transitions. [2020-11-29 19:41:16,394 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 212 transitions. Word has length 62 [2020-11-29 19:41:16,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:16,395 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 212 transitions. [2020-11-29 19:41:16,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:16,395 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 212 transitions. [2020-11-29 19:41:16,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-29 19:41:16,396 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:16,397 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:16,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 19:41:16,397 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:16,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:16,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1383513241, now seen corresponding path program 1 times [2020-11-29 19:41:16,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:16,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600180248] [2020-11-29 19:41:16,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:16,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600180248] [2020-11-29 19:41:16,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:16,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:16,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491820486] [2020-11-29 19:41:16,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:16,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:16,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:16,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:16,537 INFO L87 Difference]: Start difference. First operand 143 states and 212 transitions. Second operand 4 states. [2020-11-29 19:41:17,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:17,061 INFO L93 Difference]: Finished difference Result 310 states and 467 transitions. [2020-11-29 19:41:17,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:17,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-11-29 19:41:17,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:17,064 INFO L225 Difference]: With dead ends: 310 [2020-11-29 19:41:17,064 INFO L226 Difference]: Without dead ends: 186 [2020-11-29 19:41:17,065 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 [2020-11-29 19:41:17,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-11-29 19:41:17,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 165. [2020-11-29 19:41:17,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-11-29 19:41:17,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 250 transitions. [2020-11-29 19:41:17,085 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 250 transitions. Word has length 62 [2020-11-29 19:41:17,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:17,086 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 250 transitions. [2020-11-29 19:41:17,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:17,086 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 250 transitions. [2020-11-29 19:41:17,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-29 19:41:17,088 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:17,092 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:17,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 19:41:17,093 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:17,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:17,093 INFO L82 PathProgramCache]: Analyzing trace with hash 407848530, now seen corresponding path program 1 times [2020-11-29 19:41:17,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:17,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989810661] [2020-11-29 19:41:17,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:17,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989810661] [2020-11-29 19:41:17,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:17,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:17,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283204684] [2020-11-29 19:41:17,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:17,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:17,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:17,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:17,223 INFO L87 Difference]: Start difference. First operand 165 states and 250 transitions. Second operand 4 states. [2020-11-29 19:41:17,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:17,626 INFO L93 Difference]: Finished difference Result 314 states and 481 transitions. [2020-11-29 19:41:17,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:17,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-11-29 19:41:17,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:17,629 INFO L225 Difference]: With dead ends: 314 [2020-11-29 19:41:17,629 INFO L226 Difference]: Without dead ends: 168 [2020-11-29 19:41:17,629 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 [2020-11-29 19:41:17,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-11-29 19:41:17,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 165. [2020-11-29 19:41:17,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-11-29 19:41:17,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 249 transitions. [2020-11-29 19:41:17,638 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 249 transitions. Word has length 63 [2020-11-29 19:41:17,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:17,639 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 249 transitions. [2020-11-29 19:41:17,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:17,639 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 249 transitions. [2020-11-29 19:41:17,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-29 19:41:17,640 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:17,640 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:17,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 19:41:17,641 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:17,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:17,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1281685867, now seen corresponding path program 1 times [2020-11-29 19:41:17,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:17,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926540078] [2020-11-29 19:41:17,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:17,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926540078] [2020-11-29 19:41:17,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:17,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:17,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497828184] [2020-11-29 19:41:17,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:17,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:17,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:17,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:17,759 INFO L87 Difference]: Start difference. First operand 165 states and 249 transitions. Second operand 4 states. [2020-11-29 19:41:18,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:18,173 INFO L93 Difference]: Finished difference Result 332 states and 503 transitions. [2020-11-29 19:41:18,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:18,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-11-29 19:41:18,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:18,175 INFO L225 Difference]: With dead ends: 332 [2020-11-29 19:41:18,175 INFO L226 Difference]: Without dead ends: 186 [2020-11-29 19:41:18,176 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 [2020-11-29 19:41:18,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-11-29 19:41:18,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 165. [2020-11-29 19:41:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-11-29 19:41:18,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 248 transitions. [2020-11-29 19:41:18,182 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 248 transitions. Word has length 75 [2020-11-29 19:41:18,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:18,182 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 248 transitions. [2020-11-29 19:41:18,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:18,182 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 248 transitions. [2020-11-29 19:41:18,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-29 19:41:18,183 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:18,183 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:18,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 19:41:18,183 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:18,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:18,184 INFO L82 PathProgramCache]: Analyzing trace with hash 712782694, now seen corresponding path program 1 times [2020-11-29 19:41:18,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:18,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619420660] [2020-11-29 19:41:18,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:18,274 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:18,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619420660] [2020-11-29 19:41:18,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:18,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:18,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402419161] [2020-11-29 19:41:18,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:18,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:18,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:18,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:18,276 INFO L87 Difference]: Start difference. First operand 165 states and 248 transitions. Second operand 4 states. [2020-11-29 19:41:18,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:18,718 INFO L93 Difference]: Finished difference Result 330 states and 499 transitions. [2020-11-29 19:41:18,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:18,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-11-29 19:41:18,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:18,721 INFO L225 Difference]: With dead ends: 330 [2020-11-29 19:41:18,721 INFO L226 Difference]: Without dead ends: 184 [2020-11-29 19:41:18,721 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 [2020-11-29 19:41:18,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-11-29 19:41:18,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 165. [2020-11-29 19:41:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-11-29 19:41:18,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 247 transitions. [2020-11-29 19:41:18,728 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 247 transitions. Word has length 76 [2020-11-29 19:41:18,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:18,729 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 247 transitions. [2020-11-29 19:41:18,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:18,729 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 247 transitions. [2020-11-29 19:41:18,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-29 19:41:18,730 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:18,730 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:18,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 19:41:18,731 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:18,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:18,731 INFO L82 PathProgramCache]: Analyzing trace with hash -132655702, now seen corresponding path program 1 times [2020-11-29 19:41:18,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:18,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762710696] [2020-11-29 19:41:18,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:18,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762710696] [2020-11-29 19:41:18,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:18,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:18,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205292688] [2020-11-29 19:41:18,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:18,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:18,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:18,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:18,798 INFO L87 Difference]: Start difference. First operand 165 states and 247 transitions. Second operand 4 states. [2020-11-29 19:41:19,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:19,235 INFO L93 Difference]: Finished difference Result 329 states and 496 transitions. [2020-11-29 19:41:19,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:19,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-11-29 19:41:19,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:19,238 INFO L225 Difference]: With dead ends: 329 [2020-11-29 19:41:19,238 INFO L226 Difference]: Without dead ends: 183 [2020-11-29 19:41:19,239 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 [2020-11-29 19:41:19,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-11-29 19:41:19,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 165. [2020-11-29 19:41:19,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-11-29 19:41:19,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 246 transitions. [2020-11-29 19:41:19,248 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 246 transitions. Word has length 76 [2020-11-29 19:41:19,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:19,250 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 246 transitions. [2020-11-29 19:41:19,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:19,250 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 246 transitions. [2020-11-29 19:41:19,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-29 19:41:19,251 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:19,252 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:19,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 19:41:19,252 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:19,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:19,253 INFO L82 PathProgramCache]: Analyzing trace with hash 133532868, now seen corresponding path program 1 times [2020-11-29 19:41:19,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:19,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734944846] [2020-11-29 19:41:19,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:19,325 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:19,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734944846] [2020-11-29 19:41:19,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:19,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:19,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735498249] [2020-11-29 19:41:19,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:19,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:19,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:19,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:19,328 INFO L87 Difference]: Start difference. First operand 165 states and 246 transitions. Second operand 4 states. [2020-11-29 19:41:19,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:19,763 INFO L93 Difference]: Finished difference Result 328 states and 493 transitions. [2020-11-29 19:41:19,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:19,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-11-29 19:41:19,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:19,765 INFO L225 Difference]: With dead ends: 328 [2020-11-29 19:41:19,765 INFO L226 Difference]: Without dead ends: 182 [2020-11-29 19:41:19,766 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 [2020-11-29 19:41:19,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-29 19:41:19,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 165. [2020-11-29 19:41:19,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-11-29 19:41:19,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 245 transitions. [2020-11-29 19:41:19,775 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 245 transitions. Word has length 77 [2020-11-29 19:41:19,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:19,775 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 245 transitions. [2020-11-29 19:41:19,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:19,776 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 245 transitions. [2020-11-29 19:41:19,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-29 19:41:19,777 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:19,777 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:19,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 19:41:19,778 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:19,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:19,778 INFO L82 PathProgramCache]: Analyzing trace with hash 342063024, now seen corresponding path program 1 times [2020-11-29 19:41:19,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:19,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589215781] [2020-11-29 19:41:19,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:19,852 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:19,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589215781] [2020-11-29 19:41:19,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:19,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:19,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617195486] [2020-11-29 19:41:19,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:19,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:19,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:19,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:19,858 INFO L87 Difference]: Start difference. First operand 165 states and 245 transitions. Second operand 4 states. [2020-11-29 19:41:20,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:20,285 INFO L93 Difference]: Finished difference Result 328 states and 491 transitions. [2020-11-29 19:41:20,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:20,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-11-29 19:41:20,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:20,287 INFO L225 Difference]: With dead ends: 328 [2020-11-29 19:41:20,288 INFO L226 Difference]: Without dead ends: 182 [2020-11-29 19:41:20,288 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 [2020-11-29 19:41:20,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-29 19:41:20,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 165. [2020-11-29 19:41:20,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-11-29 19:41:20,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 244 transitions. [2020-11-29 19:41:20,299 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 244 transitions. Word has length 77 [2020-11-29 19:41:20,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:20,299 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 244 transitions. [2020-11-29 19:41:20,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:20,299 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 244 transitions. [2020-11-29 19:41:20,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-29 19:41:20,300 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:20,301 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:20,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 19:41:20,301 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:20,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:20,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1313801601, now seen corresponding path program 1 times [2020-11-29 19:41:20,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:20,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623757632] [2020-11-29 19:41:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:20,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623757632] [2020-11-29 19:41:20,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:20,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:20,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834535259] [2020-11-29 19:41:20,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:20,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:20,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:20,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:20,369 INFO L87 Difference]: Start difference. First operand 165 states and 244 transitions. Second operand 4 states. [2020-11-29 19:41:20,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:20,833 INFO L93 Difference]: Finished difference Result 328 states and 489 transitions. [2020-11-29 19:41:20,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:20,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-11-29 19:41:20,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:20,836 INFO L225 Difference]: With dead ends: 328 [2020-11-29 19:41:20,836 INFO L226 Difference]: Without dead ends: 182 [2020-11-29 19:41:20,837 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 [2020-11-29 19:41:20,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-29 19:41:20,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 165. [2020-11-29 19:41:20,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-11-29 19:41:20,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 243 transitions. [2020-11-29 19:41:20,847 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 243 transitions. Word has length 78 [2020-11-29 19:41:20,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:20,847 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 243 transitions. [2020-11-29 19:41:20,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:20,848 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 243 transitions. [2020-11-29 19:41:20,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-11-29 19:41:20,849 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:20,849 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:20,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 19:41:20,850 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:20,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:20,851 INFO L82 PathProgramCache]: Analyzing trace with hash 170225771, now seen corresponding path program 1 times [2020-11-29 19:41:20,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:20,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057005652] [2020-11-29 19:41:20,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:20,932 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:20,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057005652] [2020-11-29 19:41:20,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:20,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:20,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990898271] [2020-11-29 19:41:20,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:20,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:20,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:20,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:20,936 INFO L87 Difference]: Start difference. First operand 165 states and 243 transitions. Second operand 4 states. [2020-11-29 19:41:21,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:21,336 INFO L93 Difference]: Finished difference Result 328 states and 487 transitions. [2020-11-29 19:41:21,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:21,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-11-29 19:41:21,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:21,337 INFO L225 Difference]: With dead ends: 328 [2020-11-29 19:41:21,338 INFO L226 Difference]: Without dead ends: 182 [2020-11-29 19:41:21,338 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 [2020-11-29 19:41:21,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-29 19:41:21,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 165. [2020-11-29 19:41:21,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-11-29 19:41:21,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 242 transitions. [2020-11-29 19:41:21,344 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 242 transitions. Word has length 79 [2020-11-29 19:41:21,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:21,344 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 242 transitions. [2020-11-29 19:41:21,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:21,344 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 242 transitions. [2020-11-29 19:41:21,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-29 19:41:21,345 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:21,345 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:21,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 19:41:21,346 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:21,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:21,346 INFO L82 PathProgramCache]: Analyzing trace with hash -2123587236, now seen corresponding path program 1 times [2020-11-29 19:41:21,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:21,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765580088] [2020-11-29 19:41:21,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:21,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765580088] [2020-11-29 19:41:21,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:21,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:21,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183810422] [2020-11-29 19:41:21,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:21,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:21,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:21,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:21,417 INFO L87 Difference]: Start difference. First operand 165 states and 242 transitions. Second operand 4 states. [2020-11-29 19:41:21,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:21,898 INFO L93 Difference]: Finished difference Result 318 states and 472 transitions. [2020-11-29 19:41:21,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:21,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-11-29 19:41:21,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:21,901 INFO L225 Difference]: With dead ends: 318 [2020-11-29 19:41:21,901 INFO L226 Difference]: Without dead ends: 172 [2020-11-29 19:41:21,902 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 [2020-11-29 19:41:21,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-11-29 19:41:21,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 165. [2020-11-29 19:41:21,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-11-29 19:41:21,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 241 transitions. [2020-11-29 19:41:21,911 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 241 transitions. Word has length 80 [2020-11-29 19:41:21,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:21,912 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 241 transitions. [2020-11-29 19:41:21,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:21,912 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 241 transitions. [2020-11-29 19:41:21,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-29 19:41:21,913 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:21,913 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:21,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 19:41:21,914 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:21,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:21,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1575477095, now seen corresponding path program 1 times [2020-11-29 19:41:21,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:21,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523057765] [2020-11-29 19:41:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:22,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523057765] [2020-11-29 19:41:22,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:22,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:22,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199543816] [2020-11-29 19:41:22,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:22,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:22,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:22,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:22,060 INFO L87 Difference]: Start difference. First operand 165 states and 241 transitions. Second operand 4 states. [2020-11-29 19:41:22,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:22,731 INFO L93 Difference]: Finished difference Result 408 states and 610 transitions. [2020-11-29 19:41:22,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:22,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-11-29 19:41:22,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:22,734 INFO L225 Difference]: With dead ends: 408 [2020-11-29 19:41:22,734 INFO L226 Difference]: Without dead ends: 262 [2020-11-29 19:41:22,735 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 [2020-11-29 19:41:22,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-11-29 19:41:22,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 208. [2020-11-29 19:41:22,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-11-29 19:41:22,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 319 transitions. [2020-11-29 19:41:22,747 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 319 transitions. Word has length 84 [2020-11-29 19:41:22,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:22,748 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 319 transitions. [2020-11-29 19:41:22,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:22,748 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 319 transitions. [2020-11-29 19:41:22,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-29 19:41:22,750 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:22,750 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:22,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-29 19:41:22,750 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:22,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:22,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1822096923, now seen corresponding path program 1 times [2020-11-29 19:41:22,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:22,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637483728] [2020-11-29 19:41:22,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:22,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637483728] [2020-11-29 19:41:22,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:22,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:22,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619523946] [2020-11-29 19:41:22,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:22,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:22,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:22,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:22,833 INFO L87 Difference]: Start difference. First operand 208 states and 319 transitions. Second operand 4 states. [2020-11-29 19:41:23,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:23,417 INFO L93 Difference]: Finished difference Result 446 states and 691 transitions. [2020-11-29 19:41:23,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:23,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-11-29 19:41:23,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:23,420 INFO L225 Difference]: With dead ends: 446 [2020-11-29 19:41:23,420 INFO L226 Difference]: Without dead ends: 257 [2020-11-29 19:41:23,421 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 [2020-11-29 19:41:23,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-11-29 19:41:23,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 232. [2020-11-29 19:41:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-11-29 19:41:23,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 361 transitions. [2020-11-29 19:41:23,430 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 361 transitions. Word has length 84 [2020-11-29 19:41:23,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:23,431 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 361 transitions. [2020-11-29 19:41:23,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:23,431 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 361 transitions. [2020-11-29 19:41:23,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-11-29 19:41:23,432 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:23,433 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:23,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-29 19:41:23,433 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:23,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:23,434 INFO L82 PathProgramCache]: Analyzing trace with hash 878453397, now seen corresponding path program 1 times [2020-11-29 19:41:23,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:23,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539379658] [2020-11-29 19:41:23,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:23,511 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:23,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539379658] [2020-11-29 19:41:23,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:23,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:23,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309672381] [2020-11-29 19:41:23,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:23,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:23,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:23,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:23,514 INFO L87 Difference]: Start difference. First operand 232 states and 361 transitions. Second operand 4 states. [2020-11-29 19:41:24,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:24,249 INFO L93 Difference]: Finished difference Result 499 states and 771 transitions. [2020-11-29 19:41:24,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:24,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-11-29 19:41:24,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:24,252 INFO L225 Difference]: With dead ends: 499 [2020-11-29 19:41:24,252 INFO L226 Difference]: Without dead ends: 286 [2020-11-29 19:41:24,253 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 [2020-11-29 19:41:24,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-11-29 19:41:24,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 232. [2020-11-29 19:41:24,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-11-29 19:41:24,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 360 transitions. [2020-11-29 19:41:24,263 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 360 transitions. Word has length 97 [2020-11-29 19:41:24,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:24,264 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 360 transitions. [2020-11-29 19:41:24,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 360 transitions. [2020-11-29 19:41:24,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-11-29 19:41:24,266 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:24,266 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:24,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-29 19:41:24,266 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:24,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:24,267 INFO L82 PathProgramCache]: Analyzing trace with hash 919128147, now seen corresponding path program 1 times [2020-11-29 19:41:24,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:24,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892352033] [2020-11-29 19:41:24,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:24,361 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:24,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892352033] [2020-11-29 19:41:24,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:24,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:24,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474350858] [2020-11-29 19:41:24,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:24,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:24,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:24,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:24,364 INFO L87 Difference]: Start difference. First operand 232 states and 360 transitions. Second operand 4 states. [2020-11-29 19:41:24,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:24,876 INFO L93 Difference]: Finished difference Result 470 states and 730 transitions. [2020-11-29 19:41:24,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:24,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-11-29 19:41:24,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:24,883 INFO L225 Difference]: With dead ends: 470 [2020-11-29 19:41:24,883 INFO L226 Difference]: Without dead ends: 257 [2020-11-29 19:41:24,884 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 [2020-11-29 19:41:24,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-11-29 19:41:24,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 232. [2020-11-29 19:41:24,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-11-29 19:41:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 359 transitions. [2020-11-29 19:41:24,893 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 359 transitions. Word has length 97 [2020-11-29 19:41:24,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:24,893 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 359 transitions. [2020-11-29 19:41:24,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:24,893 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 359 transitions. [2020-11-29 19:41:24,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 19:41:24,894 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:24,895 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:24,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-29 19:41:24,895 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:24,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:24,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1042376858, now seen corresponding path program 1 times [2020-11-29 19:41:24,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:24,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601996456] [2020-11-29 19:41:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:24,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601996456] [2020-11-29 19:41:24,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:24,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:24,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890478243] [2020-11-29 19:41:24,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:24,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:24,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:24,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:24,986 INFO L87 Difference]: Start difference. First operand 232 states and 359 transitions. Second operand 4 states. [2020-11-29 19:41:25,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:25,626 INFO L93 Difference]: Finished difference Result 497 states and 765 transitions. [2020-11-29 19:41:25,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:25,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-29 19:41:25,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:25,630 INFO L225 Difference]: With dead ends: 497 [2020-11-29 19:41:25,630 INFO L226 Difference]: Without dead ends: 284 [2020-11-29 19:41:25,631 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 [2020-11-29 19:41:25,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-11-29 19:41:25,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 232. [2020-11-29 19:41:25,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-11-29 19:41:25,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 358 transitions. [2020-11-29 19:41:25,641 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 358 transitions. Word has length 98 [2020-11-29 19:41:25,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:25,641 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 358 transitions. [2020-11-29 19:41:25,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:25,642 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 358 transitions. [2020-11-29 19:41:25,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 19:41:25,643 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:25,643 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:25,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-29 19:41:25,644 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:25,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:25,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1887815254, now seen corresponding path program 1 times [2020-11-29 19:41:25,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:25,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673891176] [2020-11-29 19:41:25,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:25,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673891176] [2020-11-29 19:41:25,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:25,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:25,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107260678] [2020-11-29 19:41:25,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:25,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:25,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:25,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:25,782 INFO L87 Difference]: Start difference. First operand 232 states and 358 transitions. Second operand 4 states. [2020-11-29 19:41:26,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:26,397 INFO L93 Difference]: Finished difference Result 496 states and 762 transitions. [2020-11-29 19:41:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:26,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-29 19:41:26,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:26,400 INFO L225 Difference]: With dead ends: 496 [2020-11-29 19:41:26,400 INFO L226 Difference]: Without dead ends: 283 [2020-11-29 19:41:26,401 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 [2020-11-29 19:41:26,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-11-29 19:41:26,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 232. [2020-11-29 19:41:26,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-11-29 19:41:26,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 357 transitions. [2020-11-29 19:41:26,411 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 357 transitions. Word has length 98 [2020-11-29 19:41:26,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:26,411 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 357 transitions. [2020-11-29 19:41:26,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:26,412 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 357 transitions. [2020-11-29 19:41:26,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 19:41:26,413 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:26,413 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:26,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-29 19:41:26,414 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:26,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:26,415 INFO L82 PathProgramCache]: Analyzing trace with hash 218540392, now seen corresponding path program 1 times [2020-11-29 19:41:26,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:26,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949237380] [2020-11-29 19:41:26,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:26,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949237380] [2020-11-29 19:41:26,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:26,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:26,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948160028] [2020-11-29 19:41:26,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:26,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:26,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:26,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:26,497 INFO L87 Difference]: Start difference. First operand 232 states and 357 transitions. Second operand 4 states. [2020-11-29 19:41:26,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:26,972 INFO L93 Difference]: Finished difference Result 468 states and 722 transitions. [2020-11-29 19:41:26,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:26,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-29 19:41:26,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:26,974 INFO L225 Difference]: With dead ends: 468 [2020-11-29 19:41:26,974 INFO L226 Difference]: Without dead ends: 255 [2020-11-29 19:41:26,975 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 [2020-11-29 19:41:26,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-11-29 19:41:26,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 232. [2020-11-29 19:41:26,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-11-29 19:41:26,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 356 transitions. [2020-11-29 19:41:26,983 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 356 transitions. Word has length 98 [2020-11-29 19:41:26,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:26,984 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 356 transitions. [2020-11-29 19:41:26,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:26,984 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 356 transitions. [2020-11-29 19:41:26,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 19:41:26,986 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:26,986 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:26,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-29 19:41:26,986 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:26,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:26,987 INFO L82 PathProgramCache]: Analyzing trace with hash -626898004, now seen corresponding path program 1 times [2020-11-29 19:41:26,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:26,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697438686] [2020-11-29 19:41:26,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:27,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697438686] [2020-11-29 19:41:27,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:27,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:27,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531208239] [2020-11-29 19:41:27,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:27,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:27,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:27,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:27,063 INFO L87 Difference]: Start difference. First operand 232 states and 356 transitions. Second operand 4 states. [2020-11-29 19:41:27,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:27,410 INFO L93 Difference]: Finished difference Result 467 states and 719 transitions. [2020-11-29 19:41:27,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:27,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-29 19:41:27,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:27,412 INFO L225 Difference]: With dead ends: 467 [2020-11-29 19:41:27,412 INFO L226 Difference]: Without dead ends: 254 [2020-11-29 19:41:27,413 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 [2020-11-29 19:41:27,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-11-29 19:41:27,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 232. [2020-11-29 19:41:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-11-29 19:41:27,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 355 transitions. [2020-11-29 19:41:27,422 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 355 transitions. Word has length 98 [2020-11-29 19:41:27,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:27,422 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 355 transitions. [2020-11-29 19:41:27,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:27,422 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 355 transitions. [2020-11-29 19:41:27,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-29 19:41:27,424 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:27,424 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:27,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-29 19:41:27,425 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:27,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:27,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1558161604, now seen corresponding path program 1 times [2020-11-29 19:41:27,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:27,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398875016] [2020-11-29 19:41:27,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:27,510 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:27,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398875016] [2020-11-29 19:41:27,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:27,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:27,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125100676] [2020-11-29 19:41:27,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:27,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:27,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:27,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:27,513 INFO L87 Difference]: Start difference. First operand 232 states and 355 transitions. Second operand 4 states. [2020-11-29 19:41:28,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:28,040 INFO L93 Difference]: Finished difference Result 495 states and 755 transitions. [2020-11-29 19:41:28,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:28,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-11-29 19:41:28,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:28,043 INFO L225 Difference]: With dead ends: 495 [2020-11-29 19:41:28,043 INFO L226 Difference]: Without dead ends: 282 [2020-11-29 19:41:28,044 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 [2020-11-29 19:41:28,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-11-29 19:41:28,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 232. [2020-11-29 19:41:28,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-11-29 19:41:28,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 354 transitions. [2020-11-29 19:41:28,052 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 354 transitions. Word has length 99 [2020-11-29 19:41:28,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:28,052 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 354 transitions. [2020-11-29 19:41:28,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:28,052 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 354 transitions. [2020-11-29 19:41:28,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-29 19:41:28,053 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:28,054 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:28,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-29 19:41:28,054 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:28,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:28,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1766691760, now seen corresponding path program 1 times [2020-11-29 19:41:28,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:28,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347048271] [2020-11-29 19:41:28,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:28,162 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-29 19:41:28,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347048271] [2020-11-29 19:41:28,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:28,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:41:28,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173333898] [2020-11-29 19:41:28,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:41:28,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:28,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:41:28,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:41:28,165 INFO L87 Difference]: Start difference. First operand 232 states and 354 transitions. Second operand 5 states. [2020-11-29 19:41:28,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:28,847 INFO L93 Difference]: Finished difference Result 466 states and 716 transitions. [2020-11-29 19:41:28,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:41:28,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-11-29 19:41:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:28,850 INFO L225 Difference]: With dead ends: 466 [2020-11-29 19:41:28,850 INFO L226 Difference]: Without dead ends: 253 [2020-11-29 19:41:28,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:41:28,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-11-29 19:41:28,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252. [2020-11-29 19:41:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-11-29 19:41:28,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 380 transitions. [2020-11-29 19:41:28,861 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 380 transitions. Word has length 99 [2020-11-29 19:41:28,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:28,861 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 380 transitions. [2020-11-29 19:41:28,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:41:28,861 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 380 transitions. [2020-11-29 19:41:28,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-29 19:41:28,863 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:28,864 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:28,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-29 19:41:28,864 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:28,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:28,865 INFO L82 PathProgramCache]: Analyzing trace with hash -907239660, now seen corresponding path program 1 times [2020-11-29 19:41:28,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:28,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249174374] [2020-11-29 19:41:28,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:28,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249174374] [2020-11-29 19:41:28,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:28,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:28,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61192203] [2020-11-29 19:41:28,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:28,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:28,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:28,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:28,950 INFO L87 Difference]: Start difference. First operand 252 states and 380 transitions. Second operand 4 states. [2020-11-29 19:41:29,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:29,591 INFO L93 Difference]: Finished difference Result 535 states and 804 transitions. [2020-11-29 19:41:29,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:29,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-11-29 19:41:29,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:29,594 INFO L225 Difference]: With dead ends: 535 [2020-11-29 19:41:29,594 INFO L226 Difference]: Without dead ends: 302 [2020-11-29 19:41:29,595 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 [2020-11-29 19:41:29,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-11-29 19:41:29,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 252. [2020-11-29 19:41:29,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-11-29 19:41:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 379 transitions. [2020-11-29 19:41:29,604 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 379 transitions. Word has length 100 [2020-11-29 19:41:29,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:29,605 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 379 transitions. [2020-11-29 19:41:29,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:29,605 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 379 transitions. [2020-11-29 19:41:29,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-29 19:41:29,606 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:29,606 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:29,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-29 19:41:29,606 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:29,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:29,607 INFO L82 PathProgramCache]: Analyzing trace with hash -346539882, now seen corresponding path program 1 times [2020-11-29 19:41:29,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:29,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400728929] [2020-11-29 19:41:29,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:29,676 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:29,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400728929] [2020-11-29 19:41:29,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:29,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:29,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468713477] [2020-11-29 19:41:29,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:29,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:29,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:29,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:29,678 INFO L87 Difference]: Start difference. First operand 252 states and 379 transitions. Second operand 4 states. [2020-11-29 19:41:30,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:30,079 INFO L93 Difference]: Finished difference Result 506 states and 763 transitions. [2020-11-29 19:41:30,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:30,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-11-29 19:41:30,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:30,082 INFO L225 Difference]: With dead ends: 506 [2020-11-29 19:41:30,082 INFO L226 Difference]: Without dead ends: 273 [2020-11-29 19:41:30,082 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 [2020-11-29 19:41:30,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-11-29 19:41:30,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 252. [2020-11-29 19:41:30,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-11-29 19:41:30,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 378 transitions. [2020-11-29 19:41:30,091 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 378 transitions. Word has length 100 [2020-11-29 19:41:30,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:30,092 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 378 transitions. [2020-11-29 19:41:30,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:30,092 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 378 transitions. [2020-11-29 19:41:30,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-29 19:41:30,093 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:30,093 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:30,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-11-29 19:41:30,094 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:30,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:30,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1206682467, now seen corresponding path program 1 times [2020-11-29 19:41:30,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:30,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926577301] [2020-11-29 19:41:30,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:30,191 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:30,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926577301] [2020-11-29 19:41:30,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:30,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:30,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870067104] [2020-11-29 19:41:30,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:30,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:30,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:30,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:30,194 INFO L87 Difference]: Start difference. First operand 252 states and 378 transitions. Second operand 4 states. [2020-11-29 19:41:30,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:30,681 INFO L93 Difference]: Finished difference Result 535 states and 800 transitions. [2020-11-29 19:41:30,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:30,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-11-29 19:41:30,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:30,684 INFO L225 Difference]: With dead ends: 535 [2020-11-29 19:41:30,684 INFO L226 Difference]: Without dead ends: 302 [2020-11-29 19:41:30,685 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 [2020-11-29 19:41:30,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-11-29 19:41:30,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 252. [2020-11-29 19:41:30,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-11-29 19:41:30,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 377 transitions. [2020-11-29 19:41:30,697 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 377 transitions. Word has length 101 [2020-11-29 19:41:30,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:30,698 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 377 transitions. [2020-11-29 19:41:30,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:30,698 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 377 transitions. [2020-11-29 19:41:30,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-29 19:41:30,700 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:30,700 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:30,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-11-29 19:41:30,701 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:30,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:30,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1408506401, now seen corresponding path program 1 times [2020-11-29 19:41:30,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:30,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367085992] [2020-11-29 19:41:30,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:30,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367085992] [2020-11-29 19:41:30,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:30,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:30,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905814758] [2020-11-29 19:41:30,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:30,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:30,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:30,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:30,791 INFO L87 Difference]: Start difference. First operand 252 states and 377 transitions. Second operand 4 states. [2020-11-29 19:41:31,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:31,331 INFO L93 Difference]: Finished difference Result 506 states and 759 transitions. [2020-11-29 19:41:31,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:31,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-11-29 19:41:31,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:31,334 INFO L225 Difference]: With dead ends: 506 [2020-11-29 19:41:31,334 INFO L226 Difference]: Without dead ends: 273 [2020-11-29 19:41:31,335 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 [2020-11-29 19:41:31,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-11-29 19:41:31,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 252. [2020-11-29 19:41:31,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-11-29 19:41:31,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 376 transitions. [2020-11-29 19:41:31,350 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 376 transitions. Word has length 101 [2020-11-29 19:41:31,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:31,350 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 376 transitions. [2020-11-29 19:41:31,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:31,351 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 376 transitions. [2020-11-29 19:41:31,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-29 19:41:31,352 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:31,353 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:31,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-11-29 19:41:31,353 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:31,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:31,354 INFO L82 PathProgramCache]: Analyzing trace with hash -610222663, now seen corresponding path program 1 times [2020-11-29 19:41:31,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:31,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914305038] [2020-11-29 19:41:31,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:31,447 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:31,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914305038] [2020-11-29 19:41:31,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:31,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:31,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801578879] [2020-11-29 19:41:31,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:31,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:31,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:31,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:31,452 INFO L87 Difference]: Start difference. First operand 252 states and 376 transitions. Second operand 4 states. [2020-11-29 19:41:32,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:32,103 INFO L93 Difference]: Finished difference Result 535 states and 796 transitions. [2020-11-29 19:41:32,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:32,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-11-29 19:41:32,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:32,106 INFO L225 Difference]: With dead ends: 535 [2020-11-29 19:41:32,106 INFO L226 Difference]: Without dead ends: 302 [2020-11-29 19:41:32,109 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 [2020-11-29 19:41:32,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-11-29 19:41:32,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 252. [2020-11-29 19:41:32,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-11-29 19:41:32,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 375 transitions. [2020-11-29 19:41:32,121 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 375 transitions. Word has length 102 [2020-11-29 19:41:32,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:32,121 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 375 transitions. [2020-11-29 19:41:32,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:32,122 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 375 transitions. [2020-11-29 19:41:32,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-29 19:41:32,123 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:32,123 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:32,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-11-29 19:41:32,124 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:32,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:32,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1351351995, now seen corresponding path program 1 times [2020-11-29 19:41:32,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:32,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234364561] [2020-11-29 19:41:32,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:32,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234364561] [2020-11-29 19:41:32,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:32,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:32,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390944858] [2020-11-29 19:41:32,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:32,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:32,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:32,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:32,221 INFO L87 Difference]: Start difference. First operand 252 states and 375 transitions. Second operand 4 states. [2020-11-29 19:41:32,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:32,664 INFO L93 Difference]: Finished difference Result 506 states and 755 transitions. [2020-11-29 19:41:32,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:32,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-11-29 19:41:32,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:32,666 INFO L225 Difference]: With dead ends: 506 [2020-11-29 19:41:32,666 INFO L226 Difference]: Without dead ends: 273 [2020-11-29 19:41:32,667 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 [2020-11-29 19:41:32,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-11-29 19:41:32,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 252. [2020-11-29 19:41:32,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-11-29 19:41:32,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 374 transitions. [2020-11-29 19:41:32,677 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 374 transitions. Word has length 102 [2020-11-29 19:41:32,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:32,677 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 374 transitions. [2020-11-29 19:41:32,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:32,678 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 374 transitions. [2020-11-29 19:41:32,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-29 19:41:32,679 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:32,679 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:32,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-11-29 19:41:32,680 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:32,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:32,680 INFO L82 PathProgramCache]: Analyzing trace with hash 271278824, now seen corresponding path program 1 times [2020-11-29 19:41:32,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:32,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739310255] [2020-11-29 19:41:32,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:32,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739310255] [2020-11-29 19:41:32,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:32,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:32,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672678221] [2020-11-29 19:41:32,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:32,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:32,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:32,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:32,783 INFO L87 Difference]: Start difference. First operand 252 states and 374 transitions. Second operand 4 states. [2020-11-29 19:41:33,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:33,379 INFO L93 Difference]: Finished difference Result 525 states and 780 transitions. [2020-11-29 19:41:33,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:33,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-11-29 19:41:33,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:33,381 INFO L225 Difference]: With dead ends: 525 [2020-11-29 19:41:33,381 INFO L226 Difference]: Without dead ends: 292 [2020-11-29 19:41:33,382 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 [2020-11-29 19:41:33,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-11-29 19:41:33,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 252. [2020-11-29 19:41:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-11-29 19:41:33,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 373 transitions. [2020-11-29 19:41:33,391 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 373 transitions. Word has length 103 [2020-11-29 19:41:33,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:33,391 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 373 transitions. [2020-11-29 19:41:33,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:33,391 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 373 transitions. [2020-11-29 19:41:33,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-29 19:41:33,393 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:33,393 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:33,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-11-29 19:41:33,393 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:33,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:33,394 INFO L82 PathProgramCache]: Analyzing trace with hash 950551078, now seen corresponding path program 1 times [2020-11-29 19:41:33,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:33,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528618027] [2020-11-29 19:41:33,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:33,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528618027] [2020-11-29 19:41:33,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:33,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:33,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311978124] [2020-11-29 19:41:33,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:33,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:33,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:33,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:33,480 INFO L87 Difference]: Start difference. First operand 252 states and 373 transitions. Second operand 4 states. [2020-11-29 19:41:33,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:33,942 INFO L93 Difference]: Finished difference Result 496 states and 739 transitions. [2020-11-29 19:41:33,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:33,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-11-29 19:41:33,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:33,944 INFO L225 Difference]: With dead ends: 496 [2020-11-29 19:41:33,944 INFO L226 Difference]: Without dead ends: 263 [2020-11-29 19:41:33,945 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 [2020-11-29 19:41:33,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-11-29 19:41:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 252. [2020-11-29 19:41:33,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-11-29 19:41:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 372 transitions. [2020-11-29 19:41:33,954 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 372 transitions. Word has length 103 [2020-11-29 19:41:33,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:33,955 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 372 transitions. [2020-11-29 19:41:33,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:33,955 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 372 transitions. [2020-11-29 19:41:33,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-29 19:41:33,956 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:33,957 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:33,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-11-29 19:41:33,957 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:33,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:33,958 INFO L82 PathProgramCache]: Analyzing trace with hash -504345715, now seen corresponding path program 1 times [2020-11-29 19:41:33,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:33,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531400878] [2020-11-29 19:41:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:34,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531400878] [2020-11-29 19:41:34,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:34,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:41:34,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830427427] [2020-11-29 19:41:34,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:34,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:34,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:34,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:34,073 INFO L87 Difference]: Start difference. First operand 252 states and 372 transitions. Second operand 4 states. [2020-11-29 19:41:34,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:34,543 INFO L93 Difference]: Finished difference Result 525 states and 776 transitions. [2020-11-29 19:41:34,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:34,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-11-29 19:41:34,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:34,546 INFO L225 Difference]: With dead ends: 525 [2020-11-29 19:41:34,546 INFO L226 Difference]: Without dead ends: 292 [2020-11-29 19:41:34,546 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 [2020-11-29 19:41:34,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-11-29 19:41:34,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 252. [2020-11-29 19:41:34,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-11-29 19:41:34,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 371 transitions. [2020-11-29 19:41:34,556 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 371 transitions. Word has length 106 [2020-11-29 19:41:34,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:34,556 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 371 transitions. [2020-11-29 19:41:34,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:34,557 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 371 transitions. [2020-11-29 19:41:34,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-29 19:41:34,558 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:34,558 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:34,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-11-29 19:41:34,558 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:34,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:34,559 INFO L82 PathProgramCache]: Analyzing trace with hash 2104441743, now seen corresponding path program 1 times [2020-11-29 19:41:34,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:34,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046731300] [2020-11-29 19:41:34,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-29 19:41:34,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046731300] [2020-11-29 19:41:34,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:34,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:41:34,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309117905] [2020-11-29 19:41:34,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:41:34,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:34,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:41:34,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:41:34,640 INFO L87 Difference]: Start difference. First operand 252 states and 371 transitions. Second operand 3 states. [2020-11-29 19:41:34,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:34,715 INFO L93 Difference]: Finished difference Result 714 states and 1066 transitions. [2020-11-29 19:41:34,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:41:34,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-11-29 19:41:34,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:34,719 INFO L225 Difference]: With dead ends: 714 [2020-11-29 19:41:34,719 INFO L226 Difference]: Without dead ends: 481 [2020-11-29 19:41:34,720 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 [2020-11-29 19:41:34,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-11-29 19:41:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2020-11-29 19:41:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2020-11-29 19:41:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 711 transitions. [2020-11-29 19:41:34,739 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 711 transitions. Word has length 106 [2020-11-29 19:41:34,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:34,739 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 711 transitions. [2020-11-29 19:41:34,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:41:34,740 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 711 transitions. [2020-11-29 19:41:34,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-29 19:41:34,742 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:34,742 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:34,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-11-29 19:41:34,742 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:34,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:34,743 INFO L82 PathProgramCache]: Analyzing trace with hash 888288017, now seen corresponding path program 1 times [2020-11-29 19:41:34,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:34,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80046547] [2020-11-29 19:41:34,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-29 19:41:34,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80046547] [2020-11-29 19:41:34,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:34,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:41:34,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855731235] [2020-11-29 19:41:34,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:41:34,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:34,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:41:34,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:41:34,801 INFO L87 Difference]: Start difference. First operand 481 states and 711 transitions. Second operand 3 states. [2020-11-29 19:41:34,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:34,878 INFO L93 Difference]: Finished difference Result 970 states and 1437 transitions. [2020-11-29 19:41:34,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:41:34,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-11-29 19:41:34,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:34,882 INFO L225 Difference]: With dead ends: 970 [2020-11-29 19:41:34,883 INFO L226 Difference]: Without dead ends: 508 [2020-11-29 19:41:34,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:41:34,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-11-29 19:41:34,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2020-11-29 19:41:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-11-29 19:41:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 746 transitions. [2020-11-29 19:41:34,901 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 746 transitions. Word has length 106 [2020-11-29 19:41:34,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:34,901 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 746 transitions. [2020-11-29 19:41:34,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:41:34,902 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 746 transitions. [2020-11-29 19:41:34,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-29 19:41:34,903 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:34,903 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:34,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-11-29 19:41:34,904 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:34,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:34,904 INFO L82 PathProgramCache]: Analyzing trace with hash 302011795, now seen corresponding path program 1 times [2020-11-29 19:41:34,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:34,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658180463] [2020-11-29 19:41:34,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-11-29 19:41:34,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658180463] [2020-11-29 19:41:34,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:34,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:41:34,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617814209] [2020-11-29 19:41:34,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:41:34,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:34,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:41:34,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:41:34,967 INFO L87 Difference]: Start difference. First operand 508 states and 746 transitions. Second operand 3 states. [2020-11-29 19:41:35,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:35,005 INFO L93 Difference]: Finished difference Result 999 states and 1473 transitions. [2020-11-29 19:41:35,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:41:35,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-11-29 19:41:35,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:35,009 INFO L225 Difference]: With dead ends: 999 [2020-11-29 19:41:35,009 INFO L226 Difference]: Without dead ends: 510 [2020-11-29 19:41:35,010 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 [2020-11-29 19:41:35,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-11-29 19:41:35,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2020-11-29 19:41:35,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-11-29 19:41:35,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 748 transitions. [2020-11-29 19:41:35,028 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 748 transitions. Word has length 106 [2020-11-29 19:41:35,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:35,028 INFO L481 AbstractCegarLoop]: Abstraction has 510 states and 748 transitions. [2020-11-29 19:41:35,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:41:35,029 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 748 transitions. [2020-11-29 19:41:35,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-11-29 19:41:35,030 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:35,031 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:35,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-11-29 19:41:35,031 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:35,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:35,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1080065455, now seen corresponding path program 1 times [2020-11-29 19:41:35,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:35,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838103954] [2020-11-29 19:41:35,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:35,110 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-11-29 19:41:35,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838103954] [2020-11-29 19:41:35,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:35,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:41:35,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046795691] [2020-11-29 19:41:35,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:41:35,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:35,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:41:35,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:41:35,113 INFO L87 Difference]: Start difference. First operand 510 states and 748 transitions. Second operand 3 states. [2020-11-29 19:41:35,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:35,197 INFO L93 Difference]: Finished difference Result 999 states and 1472 transitions. [2020-11-29 19:41:35,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:41:35,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-11-29 19:41:35,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:35,202 INFO L225 Difference]: With dead ends: 999 [2020-11-29 19:41:35,202 INFO L226 Difference]: Without dead ends: 510 [2020-11-29 19:41:35,203 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 [2020-11-29 19:41:35,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-11-29 19:41:35,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2020-11-29 19:41:35,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-11-29 19:41:35,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 743 transitions. [2020-11-29 19:41:35,223 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 743 transitions. Word has length 125 [2020-11-29 19:41:35,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:35,223 INFO L481 AbstractCegarLoop]: Abstraction has 510 states and 743 transitions. [2020-11-29 19:41:35,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:41:35,223 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 743 transitions. [2020-11-29 19:41:35,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-29 19:41:35,225 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:35,226 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:35,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-11-29 19:41:35,226 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:35,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:35,227 INFO L82 PathProgramCache]: Analyzing trace with hash -877709346, now seen corresponding path program 1 times [2020-11-29 19:41:35,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:35,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263777849] [2020-11-29 19:41:35,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:35,398 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:35,535 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:35,661 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:41:35,661 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:41:35,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-11-29 19:41:35,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:41:35 BoogieIcfgContainer [2020-11-29 19:41:35,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:41:35,875 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:41:35,875 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:41:35,876 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:41:35,876 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:41:09" (3/4) ... [2020-11-29 19:41:35,880 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:41:35,880 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:41:35,883 INFO L168 Benchmark]: Toolchain (without parser) took 29285.63 ms. Allocated memory was 90.2 MB in the beginning and 262.1 MB in the end (delta: 172.0 MB). Free memory was 52.9 MB in the beginning and 101.1 MB in the end (delta: -48.2 MB). Peak memory consumption was 122.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:35,883 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 90.2 MB. Free memory was 71.6 MB in the beginning and 71.5 MB in the end (delta: 62.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:41:35,884 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1088.85 ms. Allocated memory is still 90.2 MB. Free memory was 52.7 MB in the beginning and 48.3 MB in the end (delta: 4.4 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:35,884 INFO L168 Benchmark]: Boogie Procedure Inliner took 168.27 ms. Allocated memory is still 90.2 MB. Free memory was 48.3 MB in the beginning and 43.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:35,885 INFO L168 Benchmark]: Boogie Preprocessor took 130.83 ms. Allocated memory is still 90.2 MB. Free memory was 43.8 MB in the beginning and 37.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:35,885 INFO L168 Benchmark]: RCFGBuilder took 1951.59 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 37.0 MB in the beginning and 48.1 MB in the end (delta: -11.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:35,886 INFO L168 Benchmark]: TraceAbstraction took 25931.81 ms. Allocated memory was 115.3 MB in the beginning and 262.1 MB in the end (delta: 146.8 MB). Free memory was 48.1 MB in the beginning and 101.1 MB in the end (delta: -53.0 MB). Peak memory consumption was 93.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:35,886 INFO L168 Benchmark]: Witness Printer took 5.17 ms. Allocated memory is still 262.1 MB. Free memory is still 101.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:41:35,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 90.2 MB. Free memory was 71.6 MB in the beginning and 71.5 MB in the end (delta: 62.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1088.85 ms. Allocated memory is still 90.2 MB. Free memory was 52.7 MB in the beginning and 48.3 MB in the end (delta: 4.4 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 168.27 ms. Allocated memory is still 90.2 MB. Free memory was 48.3 MB in the beginning and 43.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 130.83 ms. Allocated memory is still 90.2 MB. Free memory was 43.8 MB in the beginning and 37.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1951.59 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 37.0 MB in the beginning and 48.1 MB in the end (delta: -11.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25931.81 ms. Allocated memory was 115.3 MB in the beginning and 262.1 MB in the end (delta: 146.8 MB). Free memory was 48.1 MB in the beginning and 101.1 MB in the end (delta: -53.0 MB). Peak memory consumption was 93.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.17 ms. Allocated memory is still 262.1 MB. Free memory is still 101.1 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 1122. Possible FailurePath: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={6:0}] [L1067] SSL *s ; [L1068] int tmp ; [L1072] s = malloc(sizeof(SSL)) [L1073] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1074] s->ctx = malloc(sizeof(SSL_CTX)) [L1075] s->session = malloc(sizeof(SSL_SESSION)) [L1076] s->state = 8464 [L1083] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1084] unsigned long l ; [L1085] unsigned long Time ; [L1086] unsigned long tmp = __VERIFIER_nondet_long() ; [L1087] void (*cb)() ; [L1088] long num1 ; [L1089] int ret ; [L1090] int new_state ; [L1091] int state ; [L1092] int skip ; [L1093] int got_new_session ; [L1094] int tmp___1 = __VERIFIER_nondet_int() ; [L1095] int tmp___2 = __VERIFIER_nondet_int() ; [L1096] int tmp___3 ; [L1097] int tmp___4 ; [L1098] int tmp___5 ; [L1099] int tmp___6 ; [L1100] int tmp___7 ; [L1101] long tmp___8 = __VERIFIER_nondet_long() ; [L1102] int tmp___9 ; [L1103] int tmp___10 ; [L1104] int blastFlag ; [L1108] blastFlag = 0 [L1109] s->hit=__VERIFIER_nondet_int () [L1110] s->state = 8464 [L1111] Time = tmp [L1112] cb = (void (*)())((void *)0) [L1113] ret = -1 [L1114] skip = 0 [L1115] got_new_session = 0 [L1116] EXPR s->info_callback VAL [init=1, SSLv3_server_data={6:0}] [L1116] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1117] EXPR s->info_callback [L1117] cb = s->info_callback [L1121] EXPR s->in_handshake [L1121] s->in_handshake += 1 [L1122] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_server_data={6:0}] [L1131] EXPR s->cert VAL [init=1, SSLv3_server_data={6:0}] [L1131] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1164] COND TRUE s->state == 8464 [L1320] s->shutdown = 0 [L1321] ret = __VERIFIER_nondet_int() [L1322] COND TRUE blastFlag == 0 [L1323] blastFlag = 1 VAL [init=1, SSLv3_server_data={6:0}] [L1327] COND FALSE !(ret <= 0) [L1332] got_new_session = 1 [L1333] s->state = 8496 [L1334] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1667] EXPR s->s3 [L1667] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1667] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1696] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1164] COND FALSE !(s->state == 8464) [L1167] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1167] COND FALSE !(s->state == 8465) [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1170] COND FALSE !(s->state == 8466) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1173] COND TRUE s->state == 8496 [L1338] ret = __VERIFIER_nondet_int() [L1339] COND TRUE blastFlag == 1 [L1340] blastFlag = 2 VAL [init=1, SSLv3_server_data={6:0}] [L1344] COND FALSE !(ret <= 0) [L1349] s->hit VAL [init=1, SSLv3_server_data={6:0}] [L1349] COND TRUE s->hit [L1350] s->state = 8656 VAL [init=1, SSLv3_server_data={6:0}] [L1354] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1667] EXPR s->s3 [L1667] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1667] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1696] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1164] COND FALSE !(s->state == 8464) [L1167] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1167] COND FALSE !(s->state == 8465) [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1170] COND FALSE !(s->state == 8466) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1173] COND FALSE !(s->state == 8496) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1176] COND FALSE !(s->state == 8497) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1179] COND FALSE !(s->state == 8512) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1182] COND FALSE !(s->state == 8513) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1185] COND FALSE !(s->state == 8528) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1188] COND FALSE !(s->state == 8529) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1191] COND FALSE !(s->state == 8544) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1194] COND FALSE !(s->state == 8545) [L1197] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1197] COND FALSE !(s->state == 8560) [L1200] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1200] COND FALSE !(s->state == 8561) [L1203] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1203] COND FALSE !(s->state == 8448) [L1206] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1206] COND FALSE !(s->state == 8576) [L1209] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1209] COND FALSE !(s->state == 8577) [L1212] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1212] COND FALSE !(s->state == 8592) [L1215] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1215] COND FALSE !(s->state == 8593) [L1218] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1218] COND FALSE !(s->state == 8608) [L1221] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1221] COND FALSE !(s->state == 8609) [L1224] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1224] COND FALSE !(s->state == 8640) [L1227] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1227] COND FALSE !(s->state == 8641) [L1230] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1230] COND TRUE s->state == 8656 [L1554] EXPR s->session [L1554] EXPR s->s3 [L1554] EXPR (s->s3)->tmp.new_cipher [L1554] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1555] tmp___9 = __VERIFIER_nondet_int() [L1556] COND FALSE !(! tmp___9) [L1562] ret = __VERIFIER_nondet_int() [L1563] COND TRUE blastFlag == 2 [L1564] blastFlag = 5 VAL [init=1, SSLv3_server_data={6:0}] [L1568] COND FALSE !(ret <= 0) [L1573] s->state = 8672 [L1574] s->init_num = 0 [L1575] tmp___10 = __VERIFIER_nondet_int() [L1576] COND FALSE !(! tmp___10) VAL [init=1, SSLv3_server_data={6:0}] [L1667] EXPR s->s3 [L1667] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1667] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1696] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1164] COND FALSE !(s->state == 8464) [L1167] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1167] COND FALSE !(s->state == 8465) [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1170] COND FALSE !(s->state == 8466) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1173] COND FALSE !(s->state == 8496) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1176] COND FALSE !(s->state == 8497) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1179] COND FALSE !(s->state == 8512) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1182] COND FALSE !(s->state == 8513) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1185] COND FALSE !(s->state == 8528) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1188] COND FALSE !(s->state == 8529) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1191] COND FALSE !(s->state == 8544) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1194] COND FALSE !(s->state == 8545) [L1197] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1197] COND FALSE !(s->state == 8560) [L1200] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1200] COND FALSE !(s->state == 8561) [L1203] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1203] COND FALSE !(s->state == 8448) [L1206] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1206] COND FALSE !(s->state == 8576) [L1209] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1209] COND FALSE !(s->state == 8577) [L1212] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1212] COND FALSE !(s->state == 8592) [L1215] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1215] COND FALSE !(s->state == 8593) [L1218] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1218] COND FALSE !(s->state == 8608) [L1221] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1221] COND FALSE !(s->state == 8609) [L1224] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1224] COND FALSE !(s->state == 8640) [L1227] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1227] COND FALSE !(s->state == 8641) [L1230] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1230] COND FALSE !(s->state == 8656) [L1233] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1233] COND FALSE !(s->state == 8657) [L1236] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1236] COND TRUE s->state == 8672 [L1585] ret = __VERIFIER_nondet_int() [L1586] COND FALSE !(blastFlag == 4) VAL [init=1, SSLv3_server_data={6:0}] [L1589] COND TRUE blastFlag == 5 VAL [init=1, SSLv3_server_data={6:0}] [L3] __assert_fail("0", "s3_srvr.blast.01.i.cil-2.c", 3, "reach_error") VAL [init=1, SSLv3_server_data={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 146 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.6s, OverallIterations: 42, TraceHistogramMax: 4, AutomataDifference: 19.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8012 SDtfs, 2270 SDslu, 11389 SDs, 0 SdLazy, 6913 SolverSat, 350 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 228 GetRequests, 82 SyntacticMatches, 29 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=510occurred in iteration=40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 41 MinimizatonAttempts, 933 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 3646 NumberOfCodeBlocks, 3646 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 3479 ConstructedInterpolants, 0 QuantifiedInterpolants, 795476 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 41 InterpolantComputations, 41 PerfectInterpolantSequences, 1839/1839 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 [2020-11-29 19:41:38,583 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-29 19:41:38,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:41:38,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:41:38,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:41:38,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:41:38,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:41:38,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:41:38,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:41:38,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:41:38,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:41:38,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:41:38,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:41:38,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 19:41:38,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:41:38,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:41:38,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:41:38,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:41:38,832 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:41:38,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:41:38,832 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:41:38,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:41:38,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:41:38,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:41:38,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:41:38,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:41:38,835 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 19:41:38,836 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 19:41:38,836 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:41:38,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:41:38,836 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:41:38,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:41:38,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:41:38,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:41:38,838 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:41:38,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:41:38,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:41:38,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:41:38,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:41:38,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:41:38,839 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 19:41:38,839 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 19:41:38,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:41:38,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:41:38,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 19:41:38,841 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_852e06d4-7d05-4e63-9920-cc63d5ca28ea/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77ee66abd2a03836cba1056e8b8f081ca3f237e1 [2020-11-29 19:41:39,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:41:39,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:41:39,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:41:39,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:41:39,402 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:41:39,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2020-11-29 19:41:39,480 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/data/032a7dac1/3552565d3fe140a9aff826cc41e97f81/FLAG95b036264 [2020-11-29 19:41:40,269 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:41:40,270 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2020-11-29 19:41:40,307 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/data/032a7dac1/3552565d3fe140a9aff826cc41e97f81/FLAG95b036264 [2020-11-29 19:41:40,398 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/data/032a7dac1/3552565d3fe140a9aff826cc41e97f81 [2020-11-29 19:41:40,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:41:40,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:41:40,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:41:40,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:41:40,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:41:40,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:41:40" (1/1) ... [2020-11-29 19:41:40,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29a94be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:40, skipping insertion in model container [2020-11-29 19:41:40,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:41:40" (1/1) ... [2020-11-29 19:41:40,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:41:40,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:41:41,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:41:41,213 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:41:41,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:41:41,360 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:41:41,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:41 WrapperNode [2020-11-29 19:41:41,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:41:41,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:41:41,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:41:41,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:41:41,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:41" (1/1) ... [2020-11-29 19:41:41,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:41" (1/1) ... [2020-11-29 19:41:41,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:41:41,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:41:41,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:41:41,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:41:41,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:41" (1/1) ... [2020-11-29 19:41:41,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:41" (1/1) ... [2020-11-29 19:41:41,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:41" (1/1) ... [2020-11-29 19:41:41,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:41" (1/1) ... [2020-11-29 19:41:41,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:41" (1/1) ... [2020-11-29 19:41:41,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:41" (1/1) ... [2020-11-29 19:41:41,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:41" (1/1) ... [2020-11-29 19:41:41,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:41:41,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:41:41,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:41:41,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:41:41,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/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 [2020-11-29 19:41:41,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 19:41:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 19:41:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:41:41,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 19:41:41,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 19:41:41,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 19:41:41,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:41:41,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:41:41,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 19:41:42,197 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 19:41:46,461 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-11-29 19:41:46,462 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-11-29 19:41:46,486 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:41:46,486 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 19:41:46,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:41:46 BoogieIcfgContainer [2020-11-29 19:41:46,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:41:46,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:41:46,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:41:46,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:41:46,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:41:40" (1/3) ... [2020-11-29 19:41:46,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d8e402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:41:46, skipping insertion in model container [2020-11-29 19:41:46,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:41" (2/3) ... [2020-11-29 19:41:46,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d8e402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:41:46, skipping insertion in model container [2020-11-29 19:41:46,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:41:46" (3/3) ... [2020-11-29 19:41:46,507 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.01.i.cil-2.c [2020-11-29 19:41:46,520 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:41:46,524 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:41:46,536 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:41:46,566 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:41:46,567 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:41:46,567 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:41:46,567 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:41:46,567 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:41:46,567 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:41:46,568 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:41:46,568 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:41:46,592 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2020-11-29 19:41:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 19:41:46,604 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:46,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:46,605 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:46,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:46,611 INFO L82 PathProgramCache]: Analyzing trace with hash 522834703, now seen corresponding path program 1 times [2020-11-29 19:41:46,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:41:46,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128049228] [2020-11-29 19:41:46,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/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 [2020-11-29 19:41:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:47,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:41:47,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:47,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:47,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:41:47,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:47,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128049228] [2020-11-29 19:41:47,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:47,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 19:41:47,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878795945] [2020-11-29 19:41:47,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:47,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:41:47,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:47,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:47,253 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 4 states. [2020-11-29 19:41:47,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:47,536 INFO L93 Difference]: Finished difference Result 550 states and 926 transitions. [2020-11-29 19:41:47,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:47,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-11-29 19:41:47,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:47,563 INFO L225 Difference]: With dead ends: 550 [2020-11-29 19:41:47,564 INFO L226 Difference]: Without dead ends: 373 [2020-11-29 19:41:47,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:47,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-11-29 19:41:47,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 371. [2020-11-29 19:41:47,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-11-29 19:41:47,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 562 transitions. [2020-11-29 19:41:47,685 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 562 transitions. Word has length 45 [2020-11-29 19:41:47,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:47,688 INFO L481 AbstractCegarLoop]: Abstraction has 371 states and 562 transitions. [2020-11-29 19:41:47,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:47,688 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 562 transitions. [2020-11-29 19:41:47,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-29 19:41:47,696 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:47,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:47,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 19:41:47,914 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:47,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:47,915 INFO L82 PathProgramCache]: Analyzing trace with hash -60762572, now seen corresponding path program 1 times [2020-11-29 19:41:47,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:41:47,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332148490] [2020-11-29 19:41:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/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 [2020-11-29 19:41:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:48,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:41:48,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:48,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:41:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:48,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332148490] [2020-11-29 19:41:48,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:48,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 19:41:48,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893572329] [2020-11-29 19:41:48,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:48,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:41:48,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:48,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:48,338 INFO L87 Difference]: Start difference. First operand 371 states and 562 transitions. Second operand 4 states. [2020-11-29 19:41:48,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:48,869 INFO L93 Difference]: Finished difference Result 853 states and 1299 transitions. [2020-11-29 19:41:48,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:48,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-11-29 19:41:48,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:48,877 INFO L225 Difference]: With dead ends: 853 [2020-11-29 19:41:48,878 INFO L226 Difference]: Without dead ends: 611 [2020-11-29 19:41:48,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:48,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-11-29 19:41:48,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 609. [2020-11-29 19:41:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2020-11-29 19:41:48,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 922 transitions. [2020-11-29 19:41:48,968 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 922 transitions. Word has length 63 [2020-11-29 19:41:48,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:48,973 INFO L481 AbstractCegarLoop]: Abstraction has 609 states and 922 transitions. [2020-11-29 19:41:48,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:48,973 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 922 transitions. [2020-11-29 19:41:48,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-11-29 19:41:48,987 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:48,988 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:49,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 19:41:49,203 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:49,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:49,204 INFO L82 PathProgramCache]: Analyzing trace with hash -2005677060, now seen corresponding path program 1 times [2020-11-29 19:41:49,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:41:49,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167503244] [2020-11-29 19:41:49,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/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 [2020-11-29 19:41:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:49,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:41:49,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:49,692 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:49,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:41:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:41:49,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167503244] [2020-11-29 19:41:49,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:49,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 19:41:49,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074576982] [2020-11-29 19:41:49,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:49,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:41:49,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:49,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:49,773 INFO L87 Difference]: Start difference. First operand 609 states and 922 transitions. Second operand 4 states. [2020-11-29 19:41:50,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:50,213 INFO L93 Difference]: Finished difference Result 1091 states and 1654 transitions. [2020-11-29 19:41:50,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:50,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-11-29 19:41:50,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:50,226 INFO L225 Difference]: With dead ends: 1091 [2020-11-29 19:41:50,227 INFO L226 Difference]: Without dead ends: 611 [2020-11-29 19:41:50,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:50,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-11-29 19:41:50,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2020-11-29 19:41:50,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-11-29 19:41:50,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 918 transitions. [2020-11-29 19:41:50,271 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 918 transitions. Word has length 123 [2020-11-29 19:41:50,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:50,272 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 918 transitions. [2020-11-29 19:41:50,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:50,273 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 918 transitions. [2020-11-29 19:41:50,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-29 19:41:50,283 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:50,283 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:50,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 19:41:50,498 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:41:50,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:50,498 INFO L82 PathProgramCache]: Analyzing trace with hash -877709346, now seen corresponding path program 1 times [2020-11-29 19:41:50,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:41:50,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646760892] [2020-11-29 19:41:50,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/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 [2020-11-29 19:41:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:51,087 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:51,487 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:51,910 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 19:41:51,911 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:41:52,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 19:41:52,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:41:52 BoogieIcfgContainer [2020-11-29 19:41:52,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:41:52,365 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:41:52,365 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:41:52,365 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:41:52,366 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:41:46" (3/4) ... [2020-11-29 19:41:52,368 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:41:52,574 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_852e06d4-7d05-4e63-9920-cc63d5ca28ea/bin/uautomizer/witness.graphml [2020-11-29 19:41:52,575 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:41:52,577 INFO L168 Benchmark]: Toolchain (without parser) took 12170.38 ms. Allocated memory was 62.9 MB in the beginning and 130.0 MB in the end (delta: 67.1 MB). Free memory was 42.5 MB in the beginning and 91.2 MB in the end (delta: -48.7 MB). Peak memory consumption was 67.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:52,578 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 62.9 MB. Free memory is still 46.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:41:52,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 951.33 ms. Allocated memory was 62.9 MB in the beginning and 86.0 MB in the end (delta: 23.1 MB). Free memory was 42.2 MB in the beginning and 51.2 MB in the end (delta: -9.0 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:52,580 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.23 ms. Allocated memory is still 86.0 MB. Free memory was 51.2 MB in the beginning and 46.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:52,580 INFO L168 Benchmark]: Boogie Preprocessor took 139.45 ms. Allocated memory is still 86.0 MB. Free memory was 46.8 MB in the beginning and 60.6 MB in the end (delta: -13.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:52,581 INFO L168 Benchmark]: RCFGBuilder took 4888.32 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 60.6 MB in the beginning and 71.0 MB in the end (delta: -10.4 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:52,581 INFO L168 Benchmark]: TraceAbstraction took 5870.87 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 71.0 MB in the beginning and 49.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 44.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:52,581 INFO L168 Benchmark]: Witness Printer took 209.98 ms. Allocated memory is still 130.0 MB. Free memory was 49.2 MB in the beginning and 91.2 MB in the end (delta: -41.9 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:52,584 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 62.9 MB. Free memory is still 46.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 951.33 ms. Allocated memory was 62.9 MB in the beginning and 86.0 MB in the end (delta: 23.1 MB). Free memory was 42.2 MB in the beginning and 51.2 MB in the end (delta: -9.0 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 98.23 ms. Allocated memory is still 86.0 MB. Free memory was 51.2 MB in the beginning and 46.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 139.45 ms. Allocated memory is still 86.0 MB. Free memory was 46.8 MB in the beginning and 60.6 MB in the end (delta: -13.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4888.32 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 60.6 MB in the beginning and 71.0 MB in the end (delta: -10.4 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5870.87 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 71.0 MB in the beginning and 49.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 44.5 MB. Max. memory is 16.1 GB. * Witness Printer took 209.98 ms. Allocated memory is still 130.0 MB. Free memory was 49.2 MB in the beginning and 91.2 MB in the end (delta: -41.9 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1067] SSL *s ; [L1068] int tmp ; [L1072] s = malloc(sizeof(SSL)) [L1073] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1074] s->ctx = malloc(sizeof(SSL_CTX)) [L1075] s->session = malloc(sizeof(SSL_SESSION)) [L1076] s->state = 8464 [L1083] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1084] unsigned long l ; [L1085] unsigned long Time ; [L1086] unsigned long tmp = __VERIFIER_nondet_long() ; [L1087] void (*cb)() ; [L1088] long num1 ; [L1089] int ret ; [L1090] int new_state ; [L1091] int state ; [L1092] int skip ; [L1093] int got_new_session ; [L1094] int tmp___1 = __VERIFIER_nondet_int() ; [L1095] int tmp___2 = __VERIFIER_nondet_int() ; [L1096] int tmp___3 ; [L1097] int tmp___4 ; [L1098] int tmp___5 ; [L1099] int tmp___6 ; [L1100] int tmp___7 ; [L1101] long tmp___8 = __VERIFIER_nondet_long() ; [L1102] int tmp___9 ; [L1103] int tmp___10 ; [L1104] int blastFlag ; [L1108] blastFlag = 0 [L1109] s->hit=__VERIFIER_nondet_int () [L1110] s->state = 8464 [L1111] Time = tmp [L1112] cb = (void (*)())((void *)0) [L1113] ret = -1 [L1114] skip = 0 [L1115] got_new_session = 0 [L1116] EXPR s->info_callback VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1116] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1117] EXPR s->info_callback [L1117] cb = s->info_callback [L1121] EXPR s->in_handshake [L1121] s->in_handshake += 1 [L1122] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1131] EXPR s->cert VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1131] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1164] COND TRUE s->state == 8464 [L1320] s->shutdown = 0 [L1321] ret = __VERIFIER_nondet_int() [L1322] COND TRUE blastFlag == 0 [L1323] blastFlag = 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1327] COND FALSE !(ret <= 0) [L1332] got_new_session = 1 [L1333] s->state = 8496 [L1334] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1667] EXPR s->s3 [L1667] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1667] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1696] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1164] COND FALSE !(s->state == 8464) [L1167] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1167] COND FALSE !(s->state == 8465) [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1170] COND FALSE !(s->state == 8466) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1173] COND TRUE s->state == 8496 [L1338] ret = __VERIFIER_nondet_int() [L1339] COND TRUE blastFlag == 1 [L1340] blastFlag = 2 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1344] COND FALSE !(ret <= 0) [L1349] s->hit VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1349] COND TRUE s->hit [L1350] s->state = 8656 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1354] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1667] EXPR s->s3 [L1667] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1667] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1696] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1164] COND FALSE !(s->state == 8464) [L1167] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1167] COND FALSE !(s->state == 8465) [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1170] COND FALSE !(s->state == 8466) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1173] COND FALSE !(s->state == 8496) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1176] COND FALSE !(s->state == 8497) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1179] COND FALSE !(s->state == 8512) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1182] COND FALSE !(s->state == 8513) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1185] COND FALSE !(s->state == 8528) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1188] COND FALSE !(s->state == 8529) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1191] COND FALSE !(s->state == 8544) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1194] COND FALSE !(s->state == 8545) [L1197] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1197] COND FALSE !(s->state == 8560) [L1200] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1200] COND FALSE !(s->state == 8561) [L1203] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1203] COND FALSE !(s->state == 8448) [L1206] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1206] COND FALSE !(s->state == 8576) [L1209] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1209] COND FALSE !(s->state == 8577) [L1212] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1212] COND FALSE !(s->state == 8592) [L1215] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1215] COND FALSE !(s->state == 8593) [L1218] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1218] COND FALSE !(s->state == 8608) [L1221] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1221] COND FALSE !(s->state == 8609) [L1224] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1224] COND FALSE !(s->state == 8640) [L1227] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1227] COND FALSE !(s->state == 8641) [L1230] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1230] COND TRUE s->state == 8656 [L1554] EXPR s->session [L1554] EXPR s->s3 [L1554] EXPR (s->s3)->tmp.new_cipher [L1554] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1555] tmp___9 = __VERIFIER_nondet_int() [L1556] COND FALSE !(! tmp___9) [L1562] ret = __VERIFIER_nondet_int() [L1563] COND TRUE blastFlag == 2 [L1564] blastFlag = 5 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1568] COND FALSE !(ret <= 0) [L1573] s->state = 8672 [L1574] s->init_num = 0 [L1575] tmp___10 = __VERIFIER_nondet_int() [L1576] COND FALSE !(! tmp___10) VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1667] EXPR s->s3 [L1667] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1667] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1696] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1164] COND FALSE !(s->state == 8464) [L1167] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1167] COND FALSE !(s->state == 8465) [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1170] COND FALSE !(s->state == 8466) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1173] COND FALSE !(s->state == 8496) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1176] COND FALSE !(s->state == 8497) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1179] COND FALSE !(s->state == 8512) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1182] COND FALSE !(s->state == 8513) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1185] COND FALSE !(s->state == 8528) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1188] COND FALSE !(s->state == 8529) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1191] COND FALSE !(s->state == 8544) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1194] COND FALSE !(s->state == 8545) [L1197] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1197] COND FALSE !(s->state == 8560) [L1200] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1200] COND FALSE !(s->state == 8561) [L1203] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1203] COND FALSE !(s->state == 8448) [L1206] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1206] COND FALSE !(s->state == 8576) [L1209] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1209] COND FALSE !(s->state == 8577) [L1212] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1212] COND FALSE !(s->state == 8592) [L1215] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1215] COND FALSE !(s->state == 8593) [L1218] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1218] COND FALSE !(s->state == 8608) [L1221] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1221] COND FALSE !(s->state == 8609) [L1224] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1224] COND FALSE !(s->state == 8640) [L1227] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1227] COND FALSE !(s->state == 8641) [L1230] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1230] COND FALSE !(s->state == 8656) [L1233] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1233] COND FALSE !(s->state == 8657) [L1236] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1236] COND TRUE s->state == 8672 [L1585] ret = __VERIFIER_nondet_int() [L1586] COND FALSE !(blastFlag == 4) VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1589] COND TRUE blastFlag == 5 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L3] __assert_fail("0", "s3_srvr.blast.01.i.cil-2.c", 3, "reach_error") VAL [init=1, SSLv3_server_data={-2147483617:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 146 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.5s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 951 SDtfs, 1145 SDslu, 977 SDs, 0 SdLazy, 86 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 456 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 357 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 456 ConstructedInterpolants, 0 QuantifiedInterpolants, 120522 SizeOfPredicates, 2 NumberOfNonLiveVariables, 659 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 224/224 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...