./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/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 8334dcb0cdaf6693a0e55f9663f2e64fc956eb05 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/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 8334dcb0cdaf6693a0e55f9663f2e64fc956eb05 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:52:50,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:52:50,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:52:50,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:52:50,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:52:50,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:52:50,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:52:50,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:52:50,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:52:50,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:52:50,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:52:50,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:52:50,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:52:50,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:52:50,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:52:50,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:52:50,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:52:50,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:52:50,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:52:50,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:52:50,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:52:50,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:52:50,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:52:50,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:52:50,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:52:50,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:52:50,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:52:50,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:52:50,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:52:50,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:52:50,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:52:50,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:52:50,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:52:50,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:52:50,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:52:50,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:52:50,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:52:50,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:52:50,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:52:50,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:52:50,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:52:50,377 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:52:50,419 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:52:50,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:52:50,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:52:50,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:52:50,425 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:52:50,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:52:50,426 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:52:50,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:52:50,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:52:50,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:52:50,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:52:50,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:52:50,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:52:50,429 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:52:50,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:52:50,429 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:52:50,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:52:50,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:52:50,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:52:50,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:52:50,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:52:50,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:52:50,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:52:50,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:52:50,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:52:50,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:52:50,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:52:50,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:52:50,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:52:50,433 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_8adee914-7166-4dac-862a-c2b1288f5b7b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8334dcb0cdaf6693a0e55f9663f2e64fc956eb05 [2020-12-01 15:52:50,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:52:50,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:52:50,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:52:50,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:52:50,744 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:52:50,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/../../sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c [2020-12-01 15:52:50,809 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/data/b724f9f47/922324cf859148fc89e3cd21187bbc88/FLAG7e40732bd [2020-12-01 15:52:51,404 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:52:51,411 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c [2020-12-01 15:52:51,442 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/data/b724f9f47/922324cf859148fc89e3cd21187bbc88/FLAG7e40732bd [2020-12-01 15:52:51,664 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/data/b724f9f47/922324cf859148fc89e3cd21187bbc88 [2020-12-01 15:52:51,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:52:51,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:52:51,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:52:51,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:52:51,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:52:51,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:52:51" (1/1) ... [2020-12-01 15:52:51,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2abc49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:51, skipping insertion in model container [2020-12-01 15:52:51,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:52:51" (1/1) ... [2020-12-01 15:52:51,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:52:51,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:52:52,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:52:52,225 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:52:52,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:52:52,451 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:52:52,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:52 WrapperNode [2020-12-01 15:52:52,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:52:52,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:52:52,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:52:52,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:52:52,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:52" (1/1) ... [2020-12-01 15:52:52,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:52" (1/1) ... [2020-12-01 15:52:52,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:52:52,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:52:52,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:52:52,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:52:52,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:52" (1/1) ... [2020-12-01 15:52:52,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:52" (1/1) ... [2020-12-01 15:52:52,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:52" (1/1) ... [2020-12-01 15:52:52,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:52" (1/1) ... [2020-12-01 15:52:52,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:52" (1/1) ... [2020-12-01 15:52:52,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:52" (1/1) ... [2020-12-01 15:52:52,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:52" (1/1) ... [2020-12-01 15:52:52,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:52:52,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:52:52,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:52:52,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:52:52,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:52:52,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 15:52:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:52:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:52:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 15:52:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 15:52:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:52:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 15:52:52,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:52:52,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:52:53,040 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-01 15:52:54,040 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-12-01 15:52:54,040 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-12-01 15:52:54,055 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:52:54,055 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-01 15:52:54,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:52:54 BoogieIcfgContainer [2020-12-01 15:52:54,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:52:54,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:52:54,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:52:54,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:52:54,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:52:51" (1/3) ... [2020-12-01 15:52:54,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68bc244f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:52:54, skipping insertion in model container [2020-12-01 15:52:54,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:52" (2/3) ... [2020-12-01 15:52:54,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68bc244f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:52:54, skipping insertion in model container [2020-12-01 15:52:54,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:52:54" (3/3) ... [2020-12-01 15:52:54,071 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.03.i.cil-1.c [2020-12-01 15:52:54,088 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:52:54,092 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:52:54,111 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 15:52:54,153 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:52:54,154 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:52:54,154 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:52:54,154 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:52:54,154 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:52:54,154 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:52:54,155 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:52:54,155 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:52:54,176 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-12-01 15:52:54,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 15:52:54,187 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:52:54,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:52:54,189 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:52:54,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:52:54,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1457695037, now seen corresponding path program 1 times [2020-12-01 15:52:54,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:52:54,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277544692] [2020-12-01 15:52:54,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:52:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:52:54,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:52:54,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277544692] [2020-12-01 15:52:54,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:52:54,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:52:54,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103396688] [2020-12-01 15:52:54,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:52:54,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:52:54,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:52:54,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:52:54,635 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 4 states. [2020-12-01 15:52:55,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:52:55,162 INFO L93 Difference]: Finished difference Result 256 states and 431 transitions. [2020-12-01 15:52:55,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:52:55,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-12-01 15:52:55,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:52:55,184 INFO L225 Difference]: With dead ends: 256 [2020-12-01 15:52:55,193 INFO L226 Difference]: Without dead ends: 116 [2020-12-01 15:52:55,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:52:55,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-01 15:52:55,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-12-01 15:52:55,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-01 15:52:55,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 172 transitions. [2020-12-01 15:52:55,245 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 172 transitions. Word has length 24 [2020-12-01 15:52:55,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:52:55,245 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 172 transitions. [2020-12-01 15:52:55,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:52:55,246 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 172 transitions. [2020-12-01 15:52:55,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-01 15:52:55,248 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:52:55,248 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] [2020-12-01 15:52:55,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:52:55,249 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:52:55,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:52:55,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1001988123, now seen corresponding path program 1 times [2020-12-01 15:52:55,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:52:55,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471412691] [2020-12-01 15:52:55,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:52:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:52:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-01 15:52:55,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471412691] [2020-12-01 15:52:55,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:52:55,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:52:55,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935898053] [2020-12-01 15:52:55,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:52:55,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:52:55,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:52:55,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:52:55,431 INFO L87 Difference]: Start difference. First operand 115 states and 172 transitions. Second operand 3 states. [2020-12-01 15:52:55,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:52:55,489 INFO L93 Difference]: Finished difference Result 321 states and 484 transitions. [2020-12-01 15:52:55,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:52:55,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-12-01 15:52:55,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:52:55,495 INFO L225 Difference]: With dead ends: 321 [2020-12-01 15:52:55,495 INFO L226 Difference]: Without dead ends: 216 [2020-12-01 15:52:55,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:52:55,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-12-01 15:52:55,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-12-01 15:52:55,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-12-01 15:52:55,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 320 transitions. [2020-12-01 15:52:55,520 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 320 transitions. Word has length 38 [2020-12-01 15:52:55,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:52:55,521 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 320 transitions. [2020-12-01 15:52:55,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:52:55,521 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 320 transitions. [2020-12-01 15:52:55,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-01 15:52:55,524 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:52:55,524 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:52:55,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:52:55,525 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:52:55,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:52:55,526 INFO L82 PathProgramCache]: Analyzing trace with hash -596933037, now seen corresponding path program 1 times [2020-12-01 15:52:55,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:52:55,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028560382] [2020-12-01 15:52:55,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:52:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:52:55,655 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-01 15:52:55,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028560382] [2020-12-01 15:52:55,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:52:55,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:52:55,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372723927] [2020-12-01 15:52:55,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:52:55,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:52:55,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:52:55,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:52:55,658 INFO L87 Difference]: Start difference. First operand 216 states and 320 transitions. Second operand 3 states. [2020-12-01 15:52:55,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:52:55,786 INFO L93 Difference]: Finished difference Result 420 states and 629 transitions. [2020-12-01 15:52:55,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:52:55,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-01 15:52:55,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:52:55,801 INFO L225 Difference]: With dead ends: 420 [2020-12-01 15:52:55,801 INFO L226 Difference]: Without dead ends: 315 [2020-12-01 15:52:55,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:52:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-12-01 15:52:55,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2020-12-01 15:52:55,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-12-01 15:52:55,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 466 transitions. [2020-12-01 15:52:55,850 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 466 transitions. Word has length 53 [2020-12-01 15:52:55,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:52:55,851 INFO L481 AbstractCegarLoop]: Abstraction has 315 states and 466 transitions. [2020-12-01 15:52:55,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:52:55,851 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 466 transitions. [2020-12-01 15:52:55,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-01 15:52:55,855 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:52:55,855 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:52:55,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:52:55,856 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:52:55,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:52:55,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1173568974, now seen corresponding path program 1 times [2020-12-01 15:52:55,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:52:55,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051433428] [2020-12-01 15:52:55,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:52:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:52:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:52:56,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051433428] [2020-12-01 15:52:56,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:52:56,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:52:56,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473263867] [2020-12-01 15:52:56,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:52:56,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:52:56,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:52:56,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:52:56,071 INFO L87 Difference]: Start difference. First operand 315 states and 466 transitions. Second operand 4 states. [2020-12-01 15:52:56,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:52:56,836 INFO L93 Difference]: Finished difference Result 806 states and 1197 transitions. [2020-12-01 15:52:56,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:52:56,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-01 15:52:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:52:56,846 INFO L225 Difference]: With dead ends: 806 [2020-12-01 15:52:56,847 INFO L226 Difference]: Without dead ends: 501 [2020-12-01 15:52:56,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:52:56,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-12-01 15:52:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 365. [2020-12-01 15:52:56,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-12-01 15:52:56,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 552 transitions. [2020-12-01 15:52:56,913 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 552 transitions. Word has length 71 [2020-12-01 15:52:56,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:52:56,914 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 552 transitions. [2020-12-01 15:52:56,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:52:56,914 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 552 transitions. [2020-12-01 15:52:56,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-01 15:52:56,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:52:56,925 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:52:56,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:52:56,925 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:52:56,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:52:56,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1307582480, now seen corresponding path program 1 times [2020-12-01 15:52:56,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:52:56,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055535882] [2020-12-01 15:52:56,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:52:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:52:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:52:57,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055535882] [2020-12-01 15:52:57,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:52:57,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:52:57,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253293280] [2020-12-01 15:52:57,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:52:57,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:52:57,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:52:57,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:52:57,081 INFO L87 Difference]: Start difference. First operand 365 states and 552 transitions. Second operand 4 states. [2020-12-01 15:52:57,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:52:57,586 INFO L93 Difference]: Finished difference Result 806 states and 1218 transitions. [2020-12-01 15:52:57,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:52:57,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-01 15:52:57,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:52:57,590 INFO L225 Difference]: With dead ends: 806 [2020-12-01 15:52:57,591 INFO L226 Difference]: Without dead ends: 451 [2020-12-01 15:52:57,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:52:57,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-12-01 15:52:57,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 405. [2020-12-01 15:52:57,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-12-01 15:52:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 620 transitions. [2020-12-01 15:52:57,625 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 620 transitions. Word has length 71 [2020-12-01 15:52:57,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:52:57,626 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 620 transitions. [2020-12-01 15:52:57,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:52:57,626 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 620 transitions. [2020-12-01 15:52:57,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-01 15:52:57,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:52:57,628 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:52:57,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:52:57,628 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:52:57,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:52:57,629 INFO L82 PathProgramCache]: Analyzing trace with hash -2025585655, now seen corresponding path program 1 times [2020-12-01 15:52:57,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:52:57,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400567168] [2020-12-01 15:52:57,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:52:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:52:57,748 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:52:57,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400567168] [2020-12-01 15:52:57,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:52:57,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:52:57,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134511742] [2020-12-01 15:52:57,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:52:57,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:52:57,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:52:57,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:52:57,752 INFO L87 Difference]: Start difference. First operand 405 states and 620 transitions. Second operand 4 states. [2020-12-01 15:52:58,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:52:58,365 INFO L93 Difference]: Finished difference Result 928 states and 1409 transitions. [2020-12-01 15:52:58,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:52:58,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-12-01 15:52:58,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:52:58,376 INFO L225 Difference]: With dead ends: 928 [2020-12-01 15:52:58,380 INFO L226 Difference]: Without dead ends: 533 [2020-12-01 15:52:58,382 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 [2020-12-01 15:52:58,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2020-12-01 15:52:58,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 407. [2020-12-01 15:52:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-12-01 15:52:58,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 622 transitions. [2020-12-01 15:52:58,402 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 622 transitions. Word has length 72 [2020-12-01 15:52:58,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:52:58,403 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 622 transitions. [2020-12-01 15:52:58,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:52:58,404 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 622 transitions. [2020-12-01 15:52:58,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-01 15:52:58,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:52:58,406 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:52:58,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:52:58,406 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:52:58,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:52:58,407 INFO L82 PathProgramCache]: Analyzing trace with hash 703880522, now seen corresponding path program 2 times [2020-12-01 15:52:58,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:52:58,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091357276] [2020-12-01 15:52:58,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:52:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:52:58,535 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:52:58,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091357276] [2020-12-01 15:52:58,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:52:58,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:52:58,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751863534] [2020-12-01 15:52:58,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:52:58,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:52:58,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:52:58,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:52:58,537 INFO L87 Difference]: Start difference. First operand 407 states and 622 transitions. Second operand 4 states. [2020-12-01 15:52:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:52:59,192 INFO L93 Difference]: Finished difference Result 928 states and 1407 transitions. [2020-12-01 15:52:59,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:52:59,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-12-01 15:52:59,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:52:59,198 INFO L225 Difference]: With dead ends: 928 [2020-12-01 15:52:59,198 INFO L226 Difference]: Without dead ends: 531 [2020-12-01 15:52:59,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:52:59,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-12-01 15:52:59,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 407. [2020-12-01 15:52:59,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-12-01 15:52:59,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 620 transitions. [2020-12-01 15:52:59,219 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 620 transitions. Word has length 85 [2020-12-01 15:52:59,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:52:59,219 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 620 transitions. [2020-12-01 15:52:59,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:52:59,219 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 620 transitions. [2020-12-01 15:52:59,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-01 15:52:59,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:52:59,221 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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] [2020-12-01 15:52:59,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 15:52:59,222 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:52:59,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:52:59,222 INFO L82 PathProgramCache]: Analyzing trace with hash -405099924, now seen corresponding path program 1 times [2020-12-01 15:52:59,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:52:59,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613967622] [2020-12-01 15:52:59,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:52:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:52:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:52:59,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613967622] [2020-12-01 15:52:59,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:52:59,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:52:59,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50339953] [2020-12-01 15:52:59,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:52:59,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:52:59,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:52:59,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:52:59,315 INFO L87 Difference]: Start difference. First operand 407 states and 620 transitions. Second operand 4 states. [2020-12-01 15:52:59,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:52:59,905 INFO L93 Difference]: Finished difference Result 928 states and 1403 transitions. [2020-12-01 15:52:59,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:52:59,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-12-01 15:52:59,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:52:59,909 INFO L225 Difference]: With dead ends: 928 [2020-12-01 15:52:59,910 INFO L226 Difference]: Without dead ends: 531 [2020-12-01 15:52:59,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:52:59,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-12-01 15:52:59,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 407. [2020-12-01 15:52:59,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-12-01 15:52:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 618 transitions. [2020-12-01 15:52:59,926 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 618 transitions. Word has length 85 [2020-12-01 15:52:59,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:52:59,926 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 618 transitions. [2020-12-01 15:52:59,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:52:59,926 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 618 transitions. [2020-12-01 15:52:59,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-01 15:52:59,928 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:52:59,928 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:52:59,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 15:52:59,928 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:52:59,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:52:59,929 INFO L82 PathProgramCache]: Analyzing trace with hash -325478776, now seen corresponding path program 2 times [2020-12-01 15:52:59,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:52:59,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673397331] [2020-12-01 15:52:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:52:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:53:00,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673397331] [2020-12-01 15:53:00,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:00,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:53:00,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091467749] [2020-12-01 15:53:00,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:53:00,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:53:00,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:53:00,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:53:00,064 INFO L87 Difference]: Start difference. First operand 407 states and 618 transitions. Second operand 4 states. [2020-12-01 15:53:00,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:00,549 INFO L93 Difference]: Finished difference Result 848 states and 1278 transitions. [2020-12-01 15:53:00,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:53:00,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-12-01 15:53:00,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:00,555 INFO L225 Difference]: With dead ends: 848 [2020-12-01 15:53:00,555 INFO L226 Difference]: Without dead ends: 451 [2020-12-01 15:53:00,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:53:00,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-12-01 15:53:00,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 407. [2020-12-01 15:53:00,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-12-01 15:53:00,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 616 transitions. [2020-12-01 15:53:00,570 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 616 transitions. Word has length 85 [2020-12-01 15:53:00,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:00,571 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 616 transitions. [2020-12-01 15:53:00,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:53:00,571 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 616 transitions. [2020-12-01 15:53:00,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-01 15:53:00,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:00,576 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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] [2020-12-01 15:53:00,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-01 15:53:00,576 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:00,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:00,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1434459222, now seen corresponding path program 1 times [2020-12-01 15:53:00,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:00,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615900344] [2020-12-01 15:53:00,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:00,660 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:53:00,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615900344] [2020-12-01 15:53:00,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:00,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:53:00,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775573345] [2020-12-01 15:53:00,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:53:00,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:53:00,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:53:00,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:53:00,664 INFO L87 Difference]: Start difference. First operand 407 states and 616 transitions. Second operand 4 states. [2020-12-01 15:53:01,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:01,106 INFO L93 Difference]: Finished difference Result 848 states and 1274 transitions. [2020-12-01 15:53:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:53:01,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-12-01 15:53:01,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:01,109 INFO L225 Difference]: With dead ends: 848 [2020-12-01 15:53:01,110 INFO L226 Difference]: Without dead ends: 451 [2020-12-01 15:53:01,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:53:01,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-12-01 15:53:01,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 407. [2020-12-01 15:53:01,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-12-01 15:53:01,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 614 transitions. [2020-12-01 15:53:01,124 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 614 transitions. Word has length 85 [2020-12-01 15:53:01,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:01,124 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 614 transitions. [2020-12-01 15:53:01,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:53:01,125 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 614 transitions. [2020-12-01 15:53:01,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-01 15:53:01,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:01,126 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 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] [2020-12-01 15:53:01,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-01 15:53:01,127 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:01,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:01,127 INFO L82 PathProgramCache]: Analyzing trace with hash 381197251, now seen corresponding path program 1 times [2020-12-01 15:53:01,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:01,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982160396] [2020-12-01 15:53:01,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:53:01,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982160396] [2020-12-01 15:53:01,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:01,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:53:01,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913562068] [2020-12-01 15:53:01,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:53:01,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:53:01,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:53:01,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:53:01,215 INFO L87 Difference]: Start difference. First operand 407 states and 614 transitions. Second operand 4 states. [2020-12-01 15:53:01,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:01,776 INFO L93 Difference]: Finished difference Result 928 states and 1391 transitions. [2020-12-01 15:53:01,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:53:01,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-12-01 15:53:01,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:01,781 INFO L225 Difference]: With dead ends: 928 [2020-12-01 15:53:01,781 INFO L226 Difference]: Without dead ends: 531 [2020-12-01 15:53:01,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:53:01,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-12-01 15:53:01,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 407. [2020-12-01 15:53:01,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-12-01 15:53:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 612 transitions. [2020-12-01 15:53:01,795 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 612 transitions. Word has length 86 [2020-12-01 15:53:01,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:01,796 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 612 transitions. [2020-12-01 15:53:01,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:53:01,796 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 612 transitions. [2020-12-01 15:53:01,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-01 15:53:01,797 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:01,798 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:53:01,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-01 15:53:01,798 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:01,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:01,799 INFO L82 PathProgramCache]: Analyzing trace with hash 681258334, now seen corresponding path program 1 times [2020-12-01 15:53:01,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:01,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110666827] [2020-12-01 15:53:01,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:01,872 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:53:01,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110666827] [2020-12-01 15:53:01,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:01,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:53:01,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319514560] [2020-12-01 15:53:01,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:53:01,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:53:01,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:53:01,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:53:01,874 INFO L87 Difference]: Start difference. First operand 407 states and 612 transitions. Second operand 4 states. [2020-12-01 15:53:02,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:02,487 INFO L93 Difference]: Finished difference Result 783 states and 1168 transitions. [2020-12-01 15:53:02,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:53:02,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-12-01 15:53:02,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:02,491 INFO L225 Difference]: With dead ends: 783 [2020-12-01 15:53:02,491 INFO L226 Difference]: Without dead ends: 531 [2020-12-01 15:53:02,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:53:02,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-12-01 15:53:02,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 407. [2020-12-01 15:53:02,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-12-01 15:53:02,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 610 transitions. [2020-12-01 15:53:02,506 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 610 transitions. Word has length 86 [2020-12-01 15:53:02,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:02,506 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 610 transitions. [2020-12-01 15:53:02,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:53:02,507 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 610 transitions. [2020-12-01 15:53:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-01 15:53:02,508 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:02,508 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 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] [2020-12-01 15:53:02,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-01 15:53:02,509 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:02,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:02,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1464169915, now seen corresponding path program 1 times [2020-12-01 15:53:02,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:02,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279186381] [2020-12-01 15:53:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:53:02,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279186381] [2020-12-01 15:53:02,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:02,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:53:02,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226204229] [2020-12-01 15:53:02,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:53:02,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:53:02,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:53:02,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:53:02,623 INFO L87 Difference]: Start difference. First operand 407 states and 610 transitions. Second operand 4 states. [2020-12-01 15:53:03,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:03,066 INFO L93 Difference]: Finished difference Result 848 states and 1262 transitions. [2020-12-01 15:53:03,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:53:03,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-12-01 15:53:03,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:03,069 INFO L225 Difference]: With dead ends: 848 [2020-12-01 15:53:03,070 INFO L226 Difference]: Without dead ends: 451 [2020-12-01 15:53:03,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:53:03,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-12-01 15:53:03,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 407. [2020-12-01 15:53:03,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-12-01 15:53:03,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 608 transitions. [2020-12-01 15:53:03,084 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 608 transitions. Word has length 86 [2020-12-01 15:53:03,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:03,084 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 608 transitions. [2020-12-01 15:53:03,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:53:03,084 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 608 transitions. [2020-12-01 15:53:03,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-01 15:53:03,086 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:03,086 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:53:03,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-01 15:53:03,086 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:03,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:03,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1164108832, now seen corresponding path program 1 times [2020-12-01 15:53:03,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:03,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885651086] [2020-12-01 15:53:03,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:53:03,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885651086] [2020-12-01 15:53:03,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:03,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:53:03,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93767284] [2020-12-01 15:53:03,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:53:03,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:53:03,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:53:03,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:53:03,169 INFO L87 Difference]: Start difference. First operand 407 states and 608 transitions. Second operand 4 states. [2020-12-01 15:53:03,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:03,613 INFO L93 Difference]: Finished difference Result 703 states and 1041 transitions. [2020-12-01 15:53:03,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:53:03,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-12-01 15:53:03,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:03,616 INFO L225 Difference]: With dead ends: 703 [2020-12-01 15:53:03,617 INFO L226 Difference]: Without dead ends: 451 [2020-12-01 15:53:03,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:53:03,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-12-01 15:53:03,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 407. [2020-12-01 15:53:03,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-12-01 15:53:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 606 transitions. [2020-12-01 15:53:03,630 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 606 transitions. Word has length 86 [2020-12-01 15:53:03,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:03,631 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 606 transitions. [2020-12-01 15:53:03,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:53:03,631 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 606 transitions. [2020-12-01 15:53:03,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-01 15:53:03,632 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:03,633 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-12-01 15:53:03,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-01 15:53:03,633 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:03,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:03,633 INFO L82 PathProgramCache]: Analyzing trace with hash -956813465, now seen corresponding path program 1 times [2020-12-01 15:53:03,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:03,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368508868] [2020-12-01 15:53:03,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:53:03,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368508868] [2020-12-01 15:53:03,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:03,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:53:03,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145751930] [2020-12-01 15:53:03,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:53:03,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:53:03,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:53:03,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:53:03,710 INFO L87 Difference]: Start difference. First operand 407 states and 606 transitions. Second operand 4 states. [2020-12-01 15:53:04,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:04,389 INFO L93 Difference]: Finished difference Result 928 states and 1375 transitions. [2020-12-01 15:53:04,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:53:04,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-01 15:53:04,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:04,392 INFO L225 Difference]: With dead ends: 928 [2020-12-01 15:53:04,393 INFO L226 Difference]: Without dead ends: 531 [2020-12-01 15:53:04,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:53:04,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-12-01 15:53:04,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 407. [2020-12-01 15:53:04,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-12-01 15:53:04,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 604 transitions. [2020-12-01 15:53:04,411 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 604 transitions. Word has length 87 [2020-12-01 15:53:04,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:04,411 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 604 transitions. [2020-12-01 15:53:04,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:53:04,412 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 604 transitions. [2020-12-01 15:53:04,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-01 15:53:04,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:04,413 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:53:04,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-01 15:53:04,414 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:04,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:04,415 INFO L82 PathProgramCache]: Analyzing trace with hash 2048176167, now seen corresponding path program 1 times [2020-12-01 15:53:04,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:04,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222644287] [2020-12-01 15:53:04,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:53:04,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222644287] [2020-12-01 15:53:04,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:04,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:53:04,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995972886] [2020-12-01 15:53:04,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:53:04,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:53:04,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:53:04,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:53:04,498 INFO L87 Difference]: Start difference. First operand 407 states and 604 transitions. Second operand 4 states. [2020-12-01 15:53:05,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:05,181 INFO L93 Difference]: Finished difference Result 777 states and 1149 transitions. [2020-12-01 15:53:05,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:53:05,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-01 15:53:05,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:05,185 INFO L225 Difference]: With dead ends: 777 [2020-12-01 15:53:05,185 INFO L226 Difference]: Without dead ends: 525 [2020-12-01 15:53:05,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:53:05,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-12-01 15:53:05,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 407. [2020-12-01 15:53:05,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-12-01 15:53:05,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 602 transitions. [2020-12-01 15:53:05,200 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 602 transitions. Word has length 87 [2020-12-01 15:53:05,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:05,200 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 602 transitions. [2020-12-01 15:53:05,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:53:05,200 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 602 transitions. [2020-12-01 15:53:05,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-01 15:53:05,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:05,202 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-12-01 15:53:05,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-01 15:53:05,202 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:05,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:05,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1966346533, now seen corresponding path program 1 times [2020-12-01 15:53:05,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:05,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681182212] [2020-12-01 15:53:05,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:05,292 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:53:05,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681182212] [2020-12-01 15:53:05,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:05,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:53:05,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756663742] [2020-12-01 15:53:05,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:53:05,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:53:05,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:53:05,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:53:05,295 INFO L87 Difference]: Start difference. First operand 407 states and 602 transitions. Second operand 4 states. [2020-12-01 15:53:05,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:05,773 INFO L93 Difference]: Finished difference Result 848 states and 1246 transitions. [2020-12-01 15:53:05,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:53:05,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-01 15:53:05,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:05,778 INFO L225 Difference]: With dead ends: 848 [2020-12-01 15:53:05,778 INFO L226 Difference]: Without dead ends: 451 [2020-12-01 15:53:05,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:53:05,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-12-01 15:53:05,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 407. [2020-12-01 15:53:05,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-12-01 15:53:05,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 600 transitions. [2020-12-01 15:53:05,792 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 600 transitions. Word has length 87 [2020-12-01 15:53:05,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:05,793 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 600 transitions. [2020-12-01 15:53:05,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:53:05,793 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 600 transitions. [2020-12-01 15:53:05,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-01 15:53:05,794 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:05,795 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:53:05,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-01 15:53:05,795 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:05,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:05,796 INFO L82 PathProgramCache]: Analyzing trace with hash 676368869, now seen corresponding path program 1 times [2020-12-01 15:53:05,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:05,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138868986] [2020-12-01 15:53:05,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:05,886 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:53:05,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138868986] [2020-12-01 15:53:05,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:05,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:53:05,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029179560] [2020-12-01 15:53:05,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:53:05,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:53:05,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:53:05,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:53:05,889 INFO L87 Difference]: Start difference. First operand 407 states and 600 transitions. Second operand 4 states. [2020-12-01 15:53:06,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:06,312 INFO L93 Difference]: Finished difference Result 697 states and 1022 transitions. [2020-12-01 15:53:06,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:53:06,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-01 15:53:06,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:06,316 INFO L225 Difference]: With dead ends: 697 [2020-12-01 15:53:06,316 INFO L226 Difference]: Without dead ends: 445 [2020-12-01 15:53:06,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:53:06,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-12-01 15:53:06,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 407. [2020-12-01 15:53:06,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-12-01 15:53:06,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 598 transitions. [2020-12-01 15:53:06,330 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 598 transitions. Word has length 87 [2020-12-01 15:53:06,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:06,330 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 598 transitions. [2020-12-01 15:53:06,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:53:06,331 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 598 transitions. [2020-12-01 15:53:06,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-01 15:53:06,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:06,332 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2020-12-01 15:53:06,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-01 15:53:06,333 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:06,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:06,333 INFO L82 PathProgramCache]: Analyzing trace with hash 571107934, now seen corresponding path program 1 times [2020-12-01 15:53:06,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:06,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45187441] [2020-12-01 15:53:06,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:06,397 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:53:06,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45187441] [2020-12-01 15:53:06,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:06,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:53:06,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780933496] [2020-12-01 15:53:06,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:53:06,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:53:06,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:53:06,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:53:06,399 INFO L87 Difference]: Start difference. First operand 407 states and 598 transitions. Second operand 4 states. [2020-12-01 15:53:06,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:06,939 INFO L93 Difference]: Finished difference Result 904 states and 1330 transitions. [2020-12-01 15:53:06,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:53:06,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-12-01 15:53:06,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:06,943 INFO L225 Difference]: With dead ends: 904 [2020-12-01 15:53:06,943 INFO L226 Difference]: Without dead ends: 507 [2020-12-01 15:53:06,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:53:06,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-12-01 15:53:06,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 407. [2020-12-01 15:53:06,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-12-01 15:53:06,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 596 transitions. [2020-12-01 15:53:06,958 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 596 transitions. Word has length 88 [2020-12-01 15:53:06,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:06,959 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 596 transitions. [2020-12-01 15:53:06,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:53:06,959 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 596 transitions. [2020-12-01 15:53:06,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-01 15:53:06,961 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:06,961 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2020-12-01 15:53:06,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-01 15:53:06,961 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:06,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:06,962 INFO L82 PathProgramCache]: Analyzing trace with hash 994754656, now seen corresponding path program 1 times [2020-12-01 15:53:06,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:06,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724082344] [2020-12-01 15:53:06,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:53:07,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724082344] [2020-12-01 15:53:07,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:07,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:53:07,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807096111] [2020-12-01 15:53:07,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:53:07,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:53:07,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:53:07,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:53:07,033 INFO L87 Difference]: Start difference. First operand 407 states and 596 transitions. Second operand 4 states. [2020-12-01 15:53:07,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:07,409 INFO L93 Difference]: Finished difference Result 824 states and 1205 transitions. [2020-12-01 15:53:07,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:53:07,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-12-01 15:53:07,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:07,412 INFO L225 Difference]: With dead ends: 824 [2020-12-01 15:53:07,413 INFO L226 Difference]: Without dead ends: 427 [2020-12-01 15:53:07,413 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 [2020-12-01 15:53:07,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-12-01 15:53:07,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 407. [2020-12-01 15:53:07,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-12-01 15:53:07,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 594 transitions. [2020-12-01 15:53:07,426 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 594 transitions. Word has length 88 [2020-12-01 15:53:07,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:07,427 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 594 transitions. [2020-12-01 15:53:07,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:53:07,427 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 594 transitions. [2020-12-01 15:53:07,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-01 15:53:07,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:07,429 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:53:07,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-01 15:53:07,429 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:07,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:07,429 INFO L82 PathProgramCache]: Analyzing trace with hash -433365501, now seen corresponding path program 1 times [2020-12-01 15:53:07,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:07,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060472636] [2020-12-01 15:53:07,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:53:07,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060472636] [2020-12-01 15:53:07,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:07,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:53:07,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941688538] [2020-12-01 15:53:07,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:53:07,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:53:07,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:53:07,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:53:07,510 INFO L87 Difference]: Start difference. First operand 407 states and 594 transitions. Second operand 4 states. [2020-12-01 15:53:08,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:08,044 INFO L93 Difference]: Finished difference Result 904 states and 1322 transitions. [2020-12-01 15:53:08,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:53:08,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-12-01 15:53:08,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:08,048 INFO L225 Difference]: With dead ends: 904 [2020-12-01 15:53:08,048 INFO L226 Difference]: Without dead ends: 507 [2020-12-01 15:53:08,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:53:08,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-12-01 15:53:08,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 407. [2020-12-01 15:53:08,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-12-01 15:53:08,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 592 transitions. [2020-12-01 15:53:08,062 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 592 transitions. Word has length 89 [2020-12-01 15:53:08,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:08,062 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 592 transitions. [2020-12-01 15:53:08,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:53:08,062 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 592 transitions. [2020-12-01 15:53:08,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-01 15:53:08,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:08,064 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:53:08,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-01 15:53:08,064 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:08,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:08,065 INFO L82 PathProgramCache]: Analyzing trace with hash -185219007, now seen corresponding path program 1 times [2020-12-01 15:53:08,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:08,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226355963] [2020-12-01 15:53:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:08,123 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-01 15:53:08,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226355963] [2020-12-01 15:53:08,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:08,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:53:08,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082594194] [2020-12-01 15:53:08,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:53:08,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:53:08,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:53:08,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:53:08,125 INFO L87 Difference]: Start difference. First operand 407 states and 592 transitions. Second operand 3 states. [2020-12-01 15:53:08,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:08,247 INFO L93 Difference]: Finished difference Result 805 states and 1178 transitions. [2020-12-01 15:53:08,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:53:08,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-01 15:53:08,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:08,251 INFO L225 Difference]: With dead ends: 805 [2020-12-01 15:53:08,252 INFO L226 Difference]: Without dead ends: 555 [2020-12-01 15:53:08,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:53:08,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-12-01 15:53:08,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2020-12-01 15:53:08,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2020-12-01 15:53:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 805 transitions. [2020-12-01 15:53:08,270 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 805 transitions. Word has length 89 [2020-12-01 15:53:08,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:08,271 INFO L481 AbstractCegarLoop]: Abstraction has 555 states and 805 transitions. [2020-12-01 15:53:08,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:53:08,271 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 805 transitions. [2020-12-01 15:53:08,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-01 15:53:08,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:08,273 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:53:08,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-01 15:53:08,274 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:08,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:08,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1027809079, now seen corresponding path program 1 times [2020-12-01 15:53:08,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:08,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610755163] [2020-12-01 15:53:08,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:08,344 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-12-01 15:53:08,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610755163] [2020-12-01 15:53:08,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:08,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:53:08,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80384361] [2020-12-01 15:53:08,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:53:08,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:53:08,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:53:08,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:53:08,346 INFO L87 Difference]: Start difference. First operand 555 states and 805 transitions. Second operand 3 states. [2020-12-01 15:53:08,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:08,387 INFO L93 Difference]: Finished difference Result 1102 states and 1605 transitions. [2020-12-01 15:53:08,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:53:08,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-01 15:53:08,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:08,391 INFO L225 Difference]: With dead ends: 1102 [2020-12-01 15:53:08,392 INFO L226 Difference]: Without dead ends: 704 [2020-12-01 15:53:08,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:53:08,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-12-01 15:53:08,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 704. [2020-12-01 15:53:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-12-01 15:53:08,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1023 transitions. [2020-12-01 15:53:08,411 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1023 transitions. Word has length 91 [2020-12-01 15:53:08,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:08,411 INFO L481 AbstractCegarLoop]: Abstraction has 704 states and 1023 transitions. [2020-12-01 15:53:08,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:53:08,412 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1023 transitions. [2020-12-01 15:53:08,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-01 15:53:08,414 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:08,414 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:53:08,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-01 15:53:08,414 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:08,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:08,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1254631592, now seen corresponding path program 1 times [2020-12-01 15:53:08,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:08,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045212661] [2020-12-01 15:53:08,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:53:08,603 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:53:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:53:08,770 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:53:08,885 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:53:08,887 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:53:08,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-01 15:53:09,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:53:09 BoogieIcfgContainer [2020-12-01 15:53:09,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:53:09,046 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:53:09,046 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:53:09,046 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:53:09,047 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:52:54" (3/4) ... [2020-12-01 15:53:09,050 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 15:53:09,051 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:53:09,053 INFO L168 Benchmark]: Toolchain (without parser) took 17383.14 ms. Allocated memory was 83.9 MB in the beginning and 188.7 MB in the end (delta: 104.9 MB). Free memory was 53.9 MB in the beginning and 138.2 MB in the end (delta: -84.3 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:53:09,054 INFO L168 Benchmark]: CDTParser took 0.84 ms. Allocated memory is still 83.9 MB. Free memory was 39.7 MB in the beginning and 39.6 MB in the end (delta: 34.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:53:09,054 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.33 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 53.6 MB in the beginning and 63.3 MB in the end (delta: -9.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:53:09,054 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.40 ms. Allocated memory is still 104.9 MB. Free memory was 63.3 MB in the beginning and 58.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:53:09,055 INFO L168 Benchmark]: Boogie Preprocessor took 87.67 ms. Allocated memory is still 104.9 MB. Free memory was 58.5 MB in the beginning and 52.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:53:09,055 INFO L168 Benchmark]: RCFGBuilder took 1396.90 ms. Allocated memory is still 104.9 MB. Free memory was 52.2 MB in the beginning and 48.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:53:09,056 INFO L168 Benchmark]: TraceAbstraction took 14984.70 ms. Allocated memory was 104.9 MB in the beginning and 188.7 MB in the end (delta: 83.9 MB). Free memory was 47.8 MB in the beginning and 139.3 MB in the end (delta: -91.5 MB). Peak memory consumption was 89.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:53:09,056 INFO L168 Benchmark]: Witness Printer took 4.81 ms. Allocated memory is still 188.7 MB. Free memory was 139.3 MB in the beginning and 138.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:53:09,060 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84 ms. Allocated memory is still 83.9 MB. Free memory was 39.7 MB in the beginning and 39.6 MB in the end (delta: 34.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 774.33 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 53.6 MB in the beginning and 63.3 MB in the end (delta: -9.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 118.40 ms. Allocated memory is still 104.9 MB. Free memory was 63.3 MB in the beginning and 58.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.67 ms. Allocated memory is still 104.9 MB. Free memory was 58.5 MB in the beginning and 52.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1396.90 ms. Allocated memory is still 104.9 MB. Free memory was 52.2 MB in the beginning and 48.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14984.70 ms. Allocated memory was 104.9 MB in the beginning and 188.7 MB in the end (delta: 83.9 MB). Free memory was 47.8 MB in the beginning and 139.3 MB in the end (delta: -91.5 MB). Peak memory consumption was 89.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.81 ms. Allocated memory is still 188.7 MB. Free memory was 139.3 MB in the beginning and 138.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 1338. Possible FailurePath: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_client_data ; VAL [init=1, SSLv3_client_data={5:0}] [L1067] SSL *s = (SSL*)malloc(sizeof(SSL)) ; [L1071] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1072] s->ctx = malloc(sizeof(SSL_CTX)) [L1073] s->session = malloc(sizeof(SSL_SESSION)) [L1074] s->state = 12292 [L1075] s->version = __VERIFIER_nondet_int() [L1082] BUF_MEM *buf ; [L1083] unsigned long tmp ; [L1084] unsigned long l ; [L1085] long num1 ; [L1086] void (*cb)() ; [L1087] int ret ; [L1088] int new_state ; [L1089] int state ; [L1090] int skip ; [L1091] int tmp___1 = __VERIFIER_nondet_int() ; [L1092] int tmp___2 = __VERIFIER_nondet_int() ; [L1093] int tmp___3 = __VERIFIER_nondet_int() ; [L1094] int tmp___4 = __VERIFIER_nondet_int() ; [L1095] int tmp___5 = __VERIFIER_nondet_int() ; [L1096] int tmp___6 = __VERIFIER_nondet_int() ; [L1097] int tmp___7 = __VERIFIER_nondet_int() ; [L1098] int tmp___8 = __VERIFIER_nondet_int() ; [L1099] long tmp___9 = __VERIFIER_nondet_long() ; [L1100] int blastFlag ; [L1103] blastFlag = 0 [L1104] s->hit=__VERIFIER_nondet_int () [L1105] s->state = 12292 [L1106] tmp = __VERIFIER_nondet_int() [L1107] cb = (void (*)())((void *)0) [L1108] ret = -1 [L1109] skip = 0 [L1110] EXPR s->info_callback VAL [init=1, SSLv3_client_data={5:0}] [L1110] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1111] EXPR s->info_callback [L1111] cb = s->info_callback [L1119] EXPR s->in_handshake [L1119] s->in_handshake += 1 [L1120] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_client_data={5:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1133] COND TRUE s->state == 12292 [L1236] s->new_session = 1 [L1237] s->state = 4096 [L1238] EXPR s->ctx [L1238] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1238] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1243] s->server = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1244] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [init=1, SSLv3_client_data={5:0}] [L1249] EXPR s->version VAL [init=1, SSLv3_client_data={5:0}] [L1249] COND FALSE !((s->version & 65280) != 768) [L1255] s->type = 4096 [L1256] EXPR s->init_buf VAL [init=1, SSLv3_client_data={5:0}] [L1256] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1274] COND FALSE !(! tmp___4) VAL [init=1, SSLv3_client_data={5:0}] [L1280] COND FALSE !(! tmp___5) [L1286] s->state = 4368 [L1287] EXPR s->ctx [L1287] EXPR (s->ctx)->stats.sess_connect [L1287] (s->ctx)->stats.sess_connect += 1 [L1288] s->init_num = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1148] COND TRUE s->state == 4368 [L1292] s->shutdown = 0 [L1293] ret = __VERIFIER_nondet_int() [L1294] COND TRUE blastFlag == 0 [L1295] blastFlag = 1 VAL [init=1, SSLv3_client_data={5:0}] [L1299] COND FALSE !(ret <= 0) [L1304] s->state = 4384 [L1305] s->init_num = 0 [L1306] EXPR s->bbio [L1306] EXPR s->wbio VAL [init=1, SSLv3_client_data={5:0}] [L1306] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1154] COND TRUE s->state == 4384 [L1314] ret = __VERIFIER_nondet_int() [L1315] COND TRUE blastFlag == 1 [L1316] blastFlag = 2 VAL [init=1, SSLv3_client_data={5:0}] [L1324] COND FALSE !(ret <= 0) [L1329] s->hit VAL [init=1, SSLv3_client_data={5:0}] [L1329] COND FALSE !(s->hit) [L1332] s->state = 4400 VAL [init=1, SSLv3_client_data={5:0}] [L1334] s->init_num = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1154] COND FALSE !(s->state == 4384) [L1157] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1157] COND FALSE !(s->state == 4385) [L1160] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1160] COND TRUE s->state == 4400 [L1338] EXPR s->s3 [L1338] EXPR (s->s3)->tmp.new_cipher [L1338] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_client_data={5:0}] [L1338] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1341] ret = __VERIFIER_nondet_int() [L1342] COND TRUE blastFlag == 2 [L1343] blastFlag = 3 VAL [init=1, SSLv3_client_data={5:0}] [L1347] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_client_data={5:0}] [L1353] s->state = 4416 [L1354] s->init_num = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1154] COND FALSE !(s->state == 4384) [L1157] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1157] COND FALSE !(s->state == 4385) [L1160] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1160] COND FALSE !(s->state == 4400) [L1163] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1163] COND FALSE !(s->state == 4401) [L1166] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1166] COND TRUE s->state == 4416 [L1358] ret = __VERIFIER_nondet_int() [L1359] COND TRUE blastFlag == 3 [L1360] blastFlag = 4 VAL [init=1, SSLv3_client_data={5:0}] [L1364] COND FALSE !(ret <= 0) [L1369] s->state = 4432 [L1370] s->init_num = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1371] COND FALSE !(! tmp___6) VAL [init=1, SSLv3_client_data={5:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1154] COND FALSE !(s->state == 4384) [L1157] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1157] COND FALSE !(s->state == 4385) [L1160] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1160] COND FALSE !(s->state == 4400) [L1163] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1163] COND FALSE !(s->state == 4401) [L1166] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1166] COND FALSE !(s->state == 4416) [L1169] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1169] COND FALSE !(s->state == 4417) [L1172] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1172] COND TRUE s->state == 4432 [L1380] ret = __VERIFIER_nondet_int() [L1381] COND TRUE blastFlag == 4 VAL [init=1, SSLv3_client_data={5:0}] [L3] __assert_fail("0", "s3_clnt.blast.03.i.cil-1.c", 3, "reach_error") VAL [init=1, SSLv3_client_data={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 130 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.7s, OverallIterations: 24, TraceHistogramMax: 6, AutomataDifference: 10.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5055 SDtfs, 1779 SDslu, 6314 SDs, 0 SdLazy, 3604 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 46 SyntacticMatches, 19 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=704occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 23 MinimizatonAttempts, 1525 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1918 NumberOfCodeBlocks, 1918 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1783 ConstructedInterpolants, 0 QuantifiedInterpolants, 373356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 PerfectInterpolantSequences, 1532/1532 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-69874e2 [2020-12-01 15:53:11,575 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-12-01 15:53:11,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:53:11,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:53:11,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:53:11,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:53:11,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:53:11,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:53:11,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:53:11,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:53:11,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:53:11,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:53:11,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:53:11,666 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 15:53:11,698 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:53:11,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:53:11,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:53:11,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:53:11,704 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:53:11,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:53:11,704 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:53:11,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:53:11,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:53:11,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:53:11,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:53:11,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:53:11,707 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 15:53:11,707 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 15:53:11,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:53:11,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:53:11,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:53:11,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:53:11,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:53:11,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:53:11,709 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:53:11,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:53:11,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:53:11,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:53:11,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:53:11,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:53:11,710 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 15:53:11,710 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 15:53:11,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:53:11,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:53:11,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 15:53:11,726 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_8adee914-7166-4dac-862a-c2b1288f5b7b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8334dcb0cdaf6693a0e55f9663f2e64fc956eb05 [2020-12-01 15:53:12,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:53:12,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:53:12,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:53:12,184 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:53:12,185 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:53:12,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/../../sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c [2020-12-01 15:53:12,272 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/data/edfef39ce/b146790e0b424746b7bcbdf0c000042f/FLAGfe1dec33e [2020-12-01 15:53:12,930 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:53:12,931 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c [2020-12-01 15:53:12,954 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/data/edfef39ce/b146790e0b424746b7bcbdf0c000042f/FLAGfe1dec33e [2020-12-01 15:53:13,141 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/data/edfef39ce/b146790e0b424746b7bcbdf0c000042f [2020-12-01 15:53:13,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:53:13,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:53:13,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:53:13,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:53:13,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:53:13,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:53:13" (1/1) ... [2020-12-01 15:53:13,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3edd46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:13, skipping insertion in model container [2020-12-01 15:53:13,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:53:13" (1/1) ... [2020-12-01 15:53:13,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:53:13,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:53:13,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:53:13,764 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:53:13,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:53:13,954 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:53:13,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:13 WrapperNode [2020-12-01 15:53:13,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:53:13,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:53:13,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:53:13,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:53:13,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:13" (1/1) ... [2020-12-01 15:53:14,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:13" (1/1) ... [2020-12-01 15:53:14,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:53:14,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:53:14,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:53:14,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:53:14,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:13" (1/1) ... [2020-12-01 15:53:14,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:13" (1/1) ... [2020-12-01 15:53:14,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:13" (1/1) ... [2020-12-01 15:53:14,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:13" (1/1) ... [2020-12-01 15:53:14,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:13" (1/1) ... [2020-12-01 15:53:14,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:13" (1/1) ... [2020-12-01 15:53:14,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:13" (1/1) ... [2020-12-01 15:53:14,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:53:14,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:53:14,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:53:14,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:53:14,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:53:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 15:53:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 15:53:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:53:14,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 15:53:14,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 15:53:14,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 15:53:14,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:53:14,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:53:14,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-01 15:53:14,487 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-01 15:53:17,799 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-12-01 15:53:17,799 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-12-01 15:53:17,809 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:53:17,809 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-01 15:53:17,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:53:17 BoogieIcfgContainer [2020-12-01 15:53:17,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:53:17,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:53:17,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:53:17,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:53:17,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:53:13" (1/3) ... [2020-12-01 15:53:17,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bce681d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:53:17, skipping insertion in model container [2020-12-01 15:53:17,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:13" (2/3) ... [2020-12-01 15:53:17,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bce681d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:53:17, skipping insertion in model container [2020-12-01 15:53:17,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:53:17" (3/3) ... [2020-12-01 15:53:17,820 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.03.i.cil-1.c [2020-12-01 15:53:17,835 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:53:17,839 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:53:17,852 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 15:53:17,892 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:53:17,892 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:53:17,892 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:53:17,893 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:53:17,893 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:53:17,893 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:53:17,893 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:53:17,893 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:53:17,914 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-12-01 15:53:17,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 15:53:17,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:17,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:53:17,924 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:17,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:17,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1457695037, now seen corresponding path program 1 times [2020-12-01 15:53:17,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:53:17,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547245683] [2020-12-01 15:53:17,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-01 15:53:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:18,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:53:18,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:53:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:53:18,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:53:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:53:18,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547245683] [2020-12-01 15:53:18,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:18,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-01 15:53:18,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247675504] [2020-12-01 15:53:18,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:53:18,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:53:18,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:53:18,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:53:18,324 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 4 states. [2020-12-01 15:53:18,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:18,559 INFO L93 Difference]: Finished difference Result 486 states and 821 transitions. [2020-12-01 15:53:18,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:53:18,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-12-01 15:53:18,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:18,585 INFO L225 Difference]: With dead ends: 486 [2020-12-01 15:53:18,585 INFO L226 Difference]: Without dead ends: 312 [2020-12-01 15:53:18,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:53:18,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-12-01 15:53:18,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2020-12-01 15:53:18,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-12-01 15:53:18,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 467 transitions. [2020-12-01 15:53:18,689 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 467 transitions. Word has length 24 [2020-12-01 15:53:18,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:18,690 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 467 transitions. [2020-12-01 15:53:18,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:53:18,690 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 467 transitions. [2020-12-01 15:53:18,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-01 15:53:18,694 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:18,695 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-12-01 15:53:18,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 15:53:18,907 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:18,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:18,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1854239308, now seen corresponding path program 1 times [2020-12-01 15:53:18,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:53:18,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071909852] [2020-12-01 15:53:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-01 15:53:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:19,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:53:19,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:53:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:53:19,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:53:19,438 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:53:19,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071909852] [2020-12-01 15:53:19,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:19,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-01 15:53:19,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234141781] [2020-12-01 15:53:19,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:53:19,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:53:19,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:53:19,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:53:19,446 INFO L87 Difference]: Start difference. First operand 312 states and 467 transitions. Second operand 4 states. [2020-12-01 15:53:21,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:21,512 INFO L93 Difference]: Finished difference Result 716 states and 1078 transitions. [2020-12-01 15:53:21,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:53:21,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-01 15:53:21,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:21,517 INFO L225 Difference]: With dead ends: 716 [2020-12-01 15:53:21,518 INFO L226 Difference]: Without dead ends: 512 [2020-12-01 15:53:21,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:53:21,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-12-01 15:53:21,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2020-12-01 15:53:21,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-12-01 15:53:21,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 764 transitions. [2020-12-01 15:53:21,586 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 764 transitions. Word has length 60 [2020-12-01 15:53:21,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:21,589 INFO L481 AbstractCegarLoop]: Abstraction has 512 states and 764 transitions. [2020-12-01 15:53:21,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:53:21,590 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 764 transitions. [2020-12-01 15:53:21,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-01 15:53:21,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:21,604 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:53:21,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 15:53:21,817 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:21,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:21,818 INFO L82 PathProgramCache]: Analyzing trace with hash 922615118, now seen corresponding path program 1 times [2020-12-01 15:53:21,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:53:21,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470452606] [2020-12-01 15:53:21,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-01 15:53:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:22,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:53:22,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:53:22,662 WARN L197 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-12-01 15:53:22,663 INFO L348 Elim1Store]: treesize reduction 122, result has 48.5 percent of original size [2020-12-01 15:53:22,664 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 124 [2020-12-01 15:53:22,683 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:53:22,994 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-12-01 15:53:22,995 INFO L625 ElimStorePlain]: treesize reduction 18, result has 85.0 percent of original size [2020-12-01 15:53:23,011 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:53:23,016 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 15:53:23,019 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 15:53:23,035 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-01 15:53:23,039 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 15:53:23,051 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-01 15:53:23,070 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 15:53:23,083 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:53:23,089 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 15:53:23,091 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 15:53:23,101 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-01 15:53:23,111 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 15:53:23,127 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-01 15:53:23,137 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 15:53:23,157 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-01 15:53:23,158 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:44, output treesize:83 [2020-12-01 15:53:23,165 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 15:53:23,167 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:53:23,168 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-01 15:53:23,175 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:53:23,180 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-01 15:53:23,188 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 15:53:23,197 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:53:23,200 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 15:53:23,205 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:53:23,206 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-01 15:53:23,210 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:53:23,211 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-01 15:53:23,214 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 15:53:23,313 INFO L348 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2020-12-01 15:53:23,314 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 26 [2020-12-01 15:53:23,318 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:53:23,324 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:53:23,325 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 15:53:23,325 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:11 [2020-12-01 15:53:23,345 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-12-01 15:53:23,348 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:53:23,352 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:53:23,352 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 15:53:23,353 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:3 [2020-12-01 15:53:23,459 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-12-01 15:53:23,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:53:23,593 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-12-01 15:53:23,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470452606] [2020-12-01 15:53:23,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:23,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-12-01 15:53:23,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544891663] [2020-12-01 15:53:23,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:53:23,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:53:23,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:53:23,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:53:23,603 INFO L87 Difference]: Start difference. First operand 512 states and 764 transitions. Second operand 4 states. [2020-12-01 15:53:27,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:27,123 INFO L93 Difference]: Finished difference Result 1021 states and 1522 transitions. [2020-12-01 15:53:27,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:53:27,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-12-01 15:53:27,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:27,129 INFO L225 Difference]: With dead ends: 1021 [2020-12-01 15:53:27,129 INFO L226 Difference]: Without dead ends: 516 [2020-12-01 15:53:27,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 189 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:53:27,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-12-01 15:53:27,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 515. [2020-12-01 15:53:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2020-12-01 15:53:27,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 767 transitions. [2020-12-01 15:53:27,161 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 767 transitions. Word has length 98 [2020-12-01 15:53:27,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:27,161 INFO L481 AbstractCegarLoop]: Abstraction has 515 states and 767 transitions. [2020-12-01 15:53:27,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:53:27,162 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 767 transitions. [2020-12-01 15:53:27,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-01 15:53:27,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:27,169 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:53:27,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 15:53:27,391 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:27,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:27,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1354155866, now seen corresponding path program 1 times [2020-12-01 15:53:27,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:53:27,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941878483] [2020-12-01 15:53:27,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-01 15:53:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:27,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:53:27,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:53:27,906 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-01 15:53:27,907 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:53:27,913 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:53:27,913 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 15:53:27,914 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-12-01 15:53:27,962 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-12-01 15:53:27,962 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2020-12-01 15:53:27,965 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:53:27,983 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:53:27,984 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 15:53:27,984 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-01 15:53:28,063 INFO L348 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-12-01 15:53:28,064 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2020-12-01 15:53:28,067 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:53:28,071 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:53:28,072 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 15:53:28,073 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-12-01 15:53:28,148 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-01 15:53:28,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:53:28,333 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-01 15:53:28,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941878483] [2020-12-01 15:53:28,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:28,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2020-12-01 15:53:28,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715616636] [2020-12-01 15:53:28,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:53:28,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:53:28,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:53:28,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:53:28,339 INFO L87 Difference]: Start difference. First operand 515 states and 767 transitions. Second operand 7 states. [2020-12-01 15:53:40,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:40,793 INFO L93 Difference]: Finished difference Result 1748 states and 2616 transitions. [2020-12-01 15:53:40,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:53:40,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-12-01 15:53:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:40,806 INFO L225 Difference]: With dead ends: 1748 [2020-12-01 15:53:40,806 INFO L226 Difference]: Without dead ends: 1243 [2020-12-01 15:53:40,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:53:40,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-12-01 15:53:40,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 618. [2020-12-01 15:53:40,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-12-01 15:53:40,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 940 transitions. [2020-12-01 15:53:40,864 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 940 transitions. Word has length 112 [2020-12-01 15:53:40,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:40,875 INFO L481 AbstractCegarLoop]: Abstraction has 618 states and 940 transitions. [2020-12-01 15:53:40,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:53:40,876 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 940 transitions. [2020-12-01 15:53:40,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-01 15:53:40,882 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:40,882 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:53:41,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-01 15:53:41,100 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:41,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:41,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1254631592, now seen corresponding path program 1 times [2020-12-01 15:53:41,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:53:41,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515363277] [2020-12-01 15:53:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-01 15:53:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:53:41,695 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:53:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:53:42,122 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:53:42,514 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 15:53:42,514 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:53:42,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-01 15:53:42,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:53:42 BoogieIcfgContainer [2020-12-01 15:53:42,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:53:42,910 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:53:42,910 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:53:42,910 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:53:42,911 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:53:17" (3/4) ... [2020-12-01 15:53:42,913 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 15:53:43,049 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8adee914-7166-4dac-862a-c2b1288f5b7b/bin/uautomizer/witness.graphml [2020-12-01 15:53:43,049 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:53:43,050 INFO L168 Benchmark]: Toolchain (without parser) took 29902.52 ms. Allocated memory was 77.6 MB in the beginning and 121.6 MB in the end (delta: 44.0 MB). Free memory was 62.1 MB in the beginning and 65.6 MB in the end (delta: -3.5 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:53:43,051 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 77.6 MB. Free memory is still 60.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:53:43,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 805.36 ms. Allocated memory is still 77.6 MB. Free memory was 62.1 MB in the beginning and 40.7 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:53:43,052 INFO L168 Benchmark]: Boogie Procedure Inliner took 153.83 ms. Allocated memory is still 77.6 MB. Free memory was 40.7 MB in the beginning and 58.1 MB in the end (delta: -17.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:53:43,052 INFO L168 Benchmark]: Boogie Preprocessor took 71.32 ms. Allocated memory is still 77.6 MB. Free memory was 58.1 MB in the beginning and 51.4 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:53:43,052 INFO L168 Benchmark]: RCFGBuilder took 3628.88 ms. Allocated memory was 77.6 MB in the beginning and 100.7 MB in the end (delta: 23.1 MB). Free memory was 51.4 MB in the beginning and 49.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:53:43,053 INFO L168 Benchmark]: TraceAbstraction took 25096.51 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 48.3 MB in the beginning and 80.3 MB in the end (delta: -31.9 MB). Peak memory consumption was 41.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:53:43,053 INFO L168 Benchmark]: Witness Printer took 139.30 ms. Allocated memory is still 121.6 MB. Free memory was 80.3 MB in the beginning and 65.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:53:43,056 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 77.6 MB. Free memory is still 60.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 805.36 ms. Allocated memory is still 77.6 MB. Free memory was 62.1 MB in the beginning and 40.7 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 153.83 ms. Allocated memory is still 77.6 MB. Free memory was 40.7 MB in the beginning and 58.1 MB in the end (delta: -17.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.32 ms. Allocated memory is still 77.6 MB. Free memory was 58.1 MB in the beginning and 51.4 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3628.88 ms. Allocated memory was 77.6 MB in the beginning and 100.7 MB in the end (delta: 23.1 MB). Free memory was 51.4 MB in the beginning and 49.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25096.51 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 48.3 MB in the beginning and 80.3 MB in the end (delta: -31.9 MB). Peak memory consumption was 41.7 MB. Max. memory is 16.1 GB. * Witness Printer took 139.30 ms. Allocated memory is still 121.6 MB. Free memory was 80.3 MB in the beginning and 65.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_client_data ; VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1067] SSL *s = (SSL*)malloc(sizeof(SSL)) ; [L1071] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1072] s->ctx = malloc(sizeof(SSL_CTX)) [L1073] s->session = malloc(sizeof(SSL_SESSION)) [L1074] s->state = 12292 [L1075] s->version = __VERIFIER_nondet_int() [L1082] BUF_MEM *buf ; [L1083] unsigned long tmp ; [L1084] unsigned long l ; [L1085] long num1 ; [L1086] void (*cb)() ; [L1087] int ret ; [L1088] int new_state ; [L1089] int state ; [L1090] int skip ; [L1091] int tmp___1 = __VERIFIER_nondet_int() ; [L1092] int tmp___2 = __VERIFIER_nondet_int() ; [L1093] int tmp___3 = __VERIFIER_nondet_int() ; [L1094] int tmp___4 = __VERIFIER_nondet_int() ; [L1095] int tmp___5 = __VERIFIER_nondet_int() ; [L1096] int tmp___6 = __VERIFIER_nondet_int() ; [L1097] int tmp___7 = __VERIFIER_nondet_int() ; [L1098] int tmp___8 = __VERIFIER_nondet_int() ; [L1099] long tmp___9 = __VERIFIER_nondet_long() ; [L1100] int blastFlag ; [L1103] blastFlag = 0 [L1104] s->hit=__VERIFIER_nondet_int () [L1105] s->state = 12292 [L1106] tmp = __VERIFIER_nondet_int() [L1107] cb = (void (*)())((void *)0) [L1108] ret = -1 [L1109] skip = 0 [L1110] EXPR s->info_callback VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1110] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1111] EXPR s->info_callback [L1111] cb = s->info_callback [L1119] EXPR s->in_handshake [L1119] s->in_handshake += 1 [L1120] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] COND TRUE s->state == 12292 [L1236] s->new_session = 1 [L1237] s->state = 4096 [L1238] EXPR s->ctx [L1238] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1238] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1243] s->server = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1244] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1249] EXPR s->version VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1249] COND FALSE !((s->version & 65280) != 768) [L1255] s->type = 4096 [L1256] EXPR s->init_buf VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1256] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1274] COND FALSE !(! tmp___4) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1280] COND FALSE !(! tmp___5) [L1286] s->state = 4368 [L1287] EXPR s->ctx [L1287] EXPR (s->ctx)->stats.sess_connect [L1287] (s->ctx)->stats.sess_connect += 1 [L1288] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1148] COND TRUE s->state == 4368 [L1292] s->shutdown = 0 [L1293] ret = __VERIFIER_nondet_int() [L1294] COND TRUE blastFlag == 0 [L1295] blastFlag = 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1299] COND FALSE !(ret <= 0) [L1304] s->state = 4384 [L1305] s->init_num = 0 [L1306] EXPR s->bbio [L1306] EXPR s->wbio VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1306] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1154] COND TRUE s->state == 4384 [L1314] ret = __VERIFIER_nondet_int() [L1315] COND TRUE blastFlag == 1 [L1316] blastFlag = 2 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1324] COND FALSE !(ret <= 0) [L1329] s->hit VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1329] COND FALSE !(s->hit) [L1332] s->state = 4400 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1334] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1154] COND FALSE !(s->state == 4384) [L1157] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1157] COND FALSE !(s->state == 4385) [L1160] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1160] COND TRUE s->state == 4400 [L1338] EXPR s->s3 [L1338] EXPR (s->s3)->tmp.new_cipher [L1338] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1338] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1341] ret = __VERIFIER_nondet_int() [L1342] COND TRUE blastFlag == 2 [L1343] blastFlag = 3 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1347] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1353] s->state = 4416 [L1354] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1154] COND FALSE !(s->state == 4384) [L1157] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1157] COND FALSE !(s->state == 4385) [L1160] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1160] COND FALSE !(s->state == 4400) [L1163] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1163] COND FALSE !(s->state == 4401) [L1166] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1166] COND TRUE s->state == 4416 [L1358] ret = __VERIFIER_nondet_int() [L1359] COND TRUE blastFlag == 3 [L1360] blastFlag = 4 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1364] COND FALSE !(ret <= 0) [L1369] s->state = 4432 [L1370] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1371] COND FALSE !(! tmp___6) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1154] COND FALSE !(s->state == 4384) [L1157] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1157] COND FALSE !(s->state == 4385) [L1160] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1160] COND FALSE !(s->state == 4400) [L1163] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1163] COND FALSE !(s->state == 4401) [L1166] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1166] COND FALSE !(s->state == 4416) [L1169] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1169] COND FALSE !(s->state == 4417) [L1172] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1172] COND TRUE s->state == 4432 [L1380] ret = __VERIFIER_nondet_int() [L1381] COND TRUE blastFlag == 4 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L3] __assert_fail("0", "s3_clnt.blast.03.i.cil-1.c", 3, "reach_error") VAL [init=1, SSLv3_client_data={-2147483617:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 130 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.8s, OverallIterations: 5, TraceHistogramMax: 6, AutomataDifference: 18.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 823 SDtfs, 1037 SDslu, 1322 SDs, 0 SdLazy, 694 SolverSat, 84 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 17.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 583 GetRequests, 565 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=618occurred in iteration=4, 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, 4 MinimizatonAttempts, 626 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 406 NumberOfCodeBlocks, 406 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 580 ConstructedInterpolants, 0 QuantifiedInterpolants, 115410 SizeOfPredicates, 8 NumberOfNonLiveVariables, 870 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 592/592 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...