./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/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 f63c6229f0a09709710be77b7ac5a08c2c6f5392 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:23:50,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:23:50,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:23:50,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:23:50,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:23:50,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:23:50,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:23:50,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:23:50,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:23:50,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:23:50,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:23:50,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:23:50,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:23:50,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:23:50,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:23:50,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:23:50,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:23:50,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:23:50,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:23:50,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:23:50,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:23:50,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:23:50,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:23:50,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:23:50,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:23:50,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:23:50,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:23:50,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:23:50,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:23:50,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:23:50,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:23:50,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:23:50,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:23:50,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:23:50,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:23:50,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:23:50,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:23:50,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:23:50,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:23:50,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:23:50,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:23:50,868 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 18:23:50,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:23:50,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:23:50,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:23:50,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:23:50,890 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:23:50,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:23:50,891 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:23:50,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:23:50,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:23:50,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:23:50,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:23:50,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:23:50,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:23:50,893 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:23:50,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:23:50,893 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:23:50,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:23:50,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:23:50,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:23:50,894 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:23:50,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:23:50,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:23:50,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:23:50,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:23:50,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:23:50,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:23:50,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:23:50,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:23:50,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:23:50,897 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_8179845e-c61b-4468-bc26-8cb609a2ba7e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f63c6229f0a09709710be77b7ac5a08c2c6f5392 [2020-11-29 18:23:51,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:23:51,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:23:51,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:23:51,240 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:23:51,242 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:23:51,243 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2020-11-29 18:23:51,337 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/data/4f275911f/8c1b083a347e4230a7ad6053eb845372/FLAG0a1ea19f6 [2020-11-29 18:23:51,892 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:23:51,893 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2020-11-29 18:23:51,903 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/data/4f275911f/8c1b083a347e4230a7ad6053eb845372/FLAG0a1ea19f6 [2020-11-29 18:23:52,269 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/data/4f275911f/8c1b083a347e4230a7ad6053eb845372 [2020-11-29 18:23:52,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:23:52,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:23:52,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:23:52,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:23:52,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:23:52,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:23:52" (1/1) ... [2020-11-29 18:23:52,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ca477e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:52, skipping insertion in model container [2020-11-29 18:23:52,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:23:52" (1/1) ... [2020-11-29 18:23:52,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:23:52,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:23:52,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:23:52,537 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:23:52,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:23:52,574 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:23:52,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:52 WrapperNode [2020-11-29 18:23:52,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:23:52,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:23:52,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:23:52,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:23:52,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:52" (1/1) ... [2020-11-29 18:23:52,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:52" (1/1) ... [2020-11-29 18:23:52,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:23:52,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:23:52,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:23:52,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:23:52,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:52" (1/1) ... [2020-11-29 18:23:52,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:52" (1/1) ... [2020-11-29 18:23:52,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:52" (1/1) ... [2020-11-29 18:23:52,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:52" (1/1) ... [2020-11-29 18:23:52,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:52" (1/1) ... [2020-11-29 18:23:52,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:52" (1/1) ... [2020-11-29 18:23:52,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:52" (1/1) ... [2020-11-29 18:23:52,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:23:52,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:23:52,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:23:52,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:23:52,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:23:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:23:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-11-29 18:23:52,719 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-11-29 18:23:52,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:23:52,720 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-11-29 18:23:52,721 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-11-29 18:23:52,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:23:52,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:23:53,114 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:23:53,116 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 18:23:53,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:23:53 BoogieIcfgContainer [2020-11-29 18:23:53,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:23:53,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:23:53,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:23:53,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:23:53,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:23:52" (1/3) ... [2020-11-29 18:23:53,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fa1842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:23:53, skipping insertion in model container [2020-11-29 18:23:53,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:52" (2/3) ... [2020-11-29 18:23:53,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fa1842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:23:53, skipping insertion in model container [2020-11-29 18:23:53,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:23:53" (3/3) ... [2020-11-29 18:23:53,128 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c [2020-11-29 18:23:53,138 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:23:53,143 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 18:23:53,154 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 18:23:53,188 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:23:53,189 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:23:53,189 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:23:53,189 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:23:53,189 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:23:53,189 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:23:53,189 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:23:53,190 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:23:53,210 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-11-29 18:23:53,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 18:23:53,215 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:23:53,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:23:53,216 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:23:53,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:23:53,228 INFO L82 PathProgramCache]: Analyzing trace with hash -2146840844, now seen corresponding path program 1 times [2020-11-29 18:23:53,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:23:53,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114676872] [2020-11-29 18:23:53,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:23:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:53,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 18:23:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:53,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:23:53,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114676872] [2020-11-29 18:23:53,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:23:53,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:23:53,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297874390] [2020-11-29 18:23:53,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 18:23:53,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:23:53,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:23:53,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:23:53,543 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-11-29 18:23:53,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:23:53,613 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-11-29 18:23:53,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:23:53,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-29 18:23:53,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:23:53,623 INFO L225 Difference]: With dead ends: 44 [2020-11-29 18:23:53,624 INFO L226 Difference]: Without dead ends: 27 [2020-11-29 18:23:53,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:23:53,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-29 18:23:53,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-29 18:23:53,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 18:23:53,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2020-11-29 18:23:53,679 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2020-11-29 18:23:53,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:23:53,680 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-11-29 18:23:53,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 18:23:53,680 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2020-11-29 18:23:53,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 18:23:53,681 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:23:53,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:23:53,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:23:53,682 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:23:53,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:23:53,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1412337332, now seen corresponding path program 1 times [2020-11-29 18:23:53,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:23:53,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153293494] [2020-11-29 18:23:53,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:23:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:53,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 18:23:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:23:53,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153293494] [2020-11-29 18:23:53,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:23:53,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:23:53,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258879380] [2020-11-29 18:23:53,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 18:23:53,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:23:53,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:23:53,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:23:53,785 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand 5 states. [2020-11-29 18:23:53,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:23:53,824 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2020-11-29 18:23:53,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:23:53,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 18:23:53,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:23:53,826 INFO L225 Difference]: With dead ends: 33 [2020-11-29 18:23:53,827 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 18:23:53,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:23:53,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 18:23:53,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-11-29 18:23:53,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 18:23:53,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2020-11-29 18:23:53,835 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2020-11-29 18:23:53,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:23:53,835 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-11-29 18:23:53,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 18:23:53,836 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2020-11-29 18:23:53,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 18:23:53,837 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:23:53,837 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:23:53,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:23:53,837 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:23:53,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:23:53,838 INFO L82 PathProgramCache]: Analyzing trace with hash -888595213, now seen corresponding path program 1 times [2020-11-29 18:23:53,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:23:53,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118296450] [2020-11-29 18:23:53,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:23:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:53,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 18:23:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:53,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:23:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:53,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-29 18:23:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 18:23:53,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118296450] [2020-11-29 18:23:53,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345618766] [2020-11-29 18:23:53,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:23:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:54,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 18:23:54,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:23:54,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 18:23:54,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:23:54,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2020-11-29 18:23:54,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222580198] [2020-11-29 18:23:54,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 18:23:54,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:23:54,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 18:23:54,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:23:54,273 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand 10 states. [2020-11-29 18:23:54,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:23:54,621 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2020-11-29 18:23:54,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 18:23:54,622 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-11-29 18:23:54,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:23:54,623 INFO L225 Difference]: With dead ends: 55 [2020-11-29 18:23:54,623 INFO L226 Difference]: Without dead ends: 31 [2020-11-29 18:23:54,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-11-29 18:23:54,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-29 18:23:54,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-11-29 18:23:54,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 18:23:54,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2020-11-29 18:23:54,635 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2020-11-29 18:23:54,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:23:54,635 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2020-11-29 18:23:54,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 18:23:54,636 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2020-11-29 18:23:54,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 18:23:54,637 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:23:54,638 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] [2020-11-29 18:23:54,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 18:23:54,862 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:23:54,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:23:54,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1502460051, now seen corresponding path program 1 times [2020-11-29 18:23:54,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:23:54,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598460140] [2020-11-29 18:23:54,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:23:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:54,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 18:23:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:54,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:23:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:55,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:23:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 18:23:55,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598460140] [2020-11-29 18:23:55,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267872263] [2020-11-29 18:23:55,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:23:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:55,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 18:23:55,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:23:55,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 18:23:55,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:23:55,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-11-29 18:23:55,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011979879] [2020-11-29 18:23:55,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 18:23:55,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:23:55,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 18:23:55,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-29 18:23:55,139 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 9 states. [2020-11-29 18:23:55,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:23:55,405 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2020-11-29 18:23:55,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 18:23:55,406 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-11-29 18:23:55,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:23:55,409 INFO L225 Difference]: With dead ends: 51 [2020-11-29 18:23:55,409 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 18:23:55,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-29 18:23:55,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 18:23:55,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-11-29 18:23:55,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 18:23:55,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2020-11-29 18:23:55,426 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 24 [2020-11-29 18:23:55,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:23:55,427 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2020-11-29 18:23:55,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 18:23:55,427 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2020-11-29 18:23:55,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-29 18:23:55,429 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:23:55,430 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:23:55,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:23:55,630 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:23:55,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:23:55,631 INFO L82 PathProgramCache]: Analyzing trace with hash -801267146, now seen corresponding path program 1 times [2020-11-29 18:23:55,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:23:55,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098334565] [2020-11-29 18:23:55,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:23:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:55,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 18:23:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:55,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:23:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:55,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:23:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:55,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-29 18:23:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:55,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-29 18:23:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-29 18:23:55,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098334565] [2020-11-29 18:23:55,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015959651] [2020-11-29 18:23:55,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:23:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:55,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 18:23:55,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:23:55,986 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-29 18:23:55,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:23:55,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2020-11-29 18:23:55,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734728511] [2020-11-29 18:23:55,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 18:23:55,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:23:55,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 18:23:55,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-11-29 18:23:55,988 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand 11 states. [2020-11-29 18:23:56,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:23:56,328 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-11-29 18:23:56,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 18:23:56,329 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-11-29 18:23:56,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:23:56,331 INFO L225 Difference]: With dead ends: 105 [2020-11-29 18:23:56,331 INFO L226 Difference]: Without dead ends: 63 [2020-11-29 18:23:56,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-11-29 18:23:56,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-29 18:23:56,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-29 18:23:56,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-29 18:23:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 92 transitions. [2020-11-29 18:23:56,351 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 92 transitions. Word has length 36 [2020-11-29 18:23:56,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:23:56,352 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 92 transitions. [2020-11-29 18:23:56,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 18:23:56,355 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 92 transitions. [2020-11-29 18:23:56,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-29 18:23:56,361 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:23:56,361 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:23:56,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:23:56,586 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:23:56,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:23:56,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1583643682, now seen corresponding path program 1 times [2020-11-29 18:23:56,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:23:56,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435607367] [2020-11-29 18:23:56,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:23:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:56,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 18:23:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:56,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:23:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:56,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:23:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:56,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:23:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:56,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:23:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 18:23:56,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435607367] [2020-11-29 18:23:56,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963004164] [2020-11-29 18:23:56,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:23:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:56,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 18:23:56,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:23:56,938 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-29 18:23:56,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:23:56,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-11-29 18:23:56,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261548048] [2020-11-29 18:23:56,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 18:23:56,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:23:56,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 18:23:56,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-11-29 18:23:56,941 INFO L87 Difference]: Start difference. First operand 63 states and 92 transitions. Second operand 13 states. [2020-11-29 18:23:57,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:23:57,448 INFO L93 Difference]: Finished difference Result 177 states and 321 transitions. [2020-11-29 18:23:57,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 18:23:57,449 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-11-29 18:23:57,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:23:57,452 INFO L225 Difference]: With dead ends: 177 [2020-11-29 18:23:57,452 INFO L226 Difference]: Without dead ends: 117 [2020-11-29 18:23:57,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2020-11-29 18:23:57,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-29 18:23:57,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103. [2020-11-29 18:23:57,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-29 18:23:57,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 166 transitions. [2020-11-29 18:23:57,492 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 166 transitions. Word has length 37 [2020-11-29 18:23:57,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:23:57,493 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 166 transitions. [2020-11-29 18:23:57,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 18:23:57,493 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 166 transitions. [2020-11-29 18:23:57,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-29 18:23:57,502 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:23:57,502 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-29 18:23:57,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:23:57,719 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:23:57,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:23:57,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1063158393, now seen corresponding path program 1 times [2020-11-29 18:23:57,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:23:57,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935202912] [2020-11-29 18:23:57,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:23:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:57,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 18:23:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:57,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:23:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:57,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:23:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:57,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:23:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:57,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:23:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:57,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:23:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:57,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-29 18:23:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:57,931 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-29 18:23:57,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935202912] [2020-11-29 18:23:57,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275183546] [2020-11-29 18:23:57,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:23:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:57,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 18:23:57,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:23:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 18:23:58,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:23:58,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2020-11-29 18:23:58,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487722888] [2020-11-29 18:23:58,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 18:23:58,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:23:58,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 18:23:58,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-11-29 18:23:58,121 INFO L87 Difference]: Start difference. First operand 103 states and 166 transitions. Second operand 14 states. [2020-11-29 18:23:58,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:23:58,806 INFO L93 Difference]: Finished difference Result 255 states and 495 transitions. [2020-11-29 18:23:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 18:23:58,807 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2020-11-29 18:23:58,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:23:58,815 INFO L225 Difference]: With dead ends: 255 [2020-11-29 18:23:58,816 INFO L226 Difference]: Without dead ends: 155 [2020-11-29 18:23:58,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2020-11-29 18:23:58,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-11-29 18:23:58,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 109. [2020-11-29 18:23:58,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-29 18:23:58,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 177 transitions. [2020-11-29 18:23:58,866 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 177 transitions. Word has length 51 [2020-11-29 18:23:58,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:23:58,866 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 177 transitions. [2020-11-29 18:23:58,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 18:23:58,867 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 177 transitions. [2020-11-29 18:23:58,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-11-29 18:23:58,874 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:23:58,875 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:23:59,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 18:23:59,102 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:23:59,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:23:59,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1732889556, now seen corresponding path program 1 times [2020-11-29 18:23:59,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:23:59,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001775425] [2020-11-29 18:23:59,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:23:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:59,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 18:23:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:59,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:23:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:59,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:23:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:59,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:23:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:59,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:23:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:59,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:23:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:59,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:23:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:59,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:23:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:59,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-11-29 18:23:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:59,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:23:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:59,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:23:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:59,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:23:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:59,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:23:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-11-29 18:23:59,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001775425] [2020-11-29 18:23:59,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779484760] [2020-11-29 18:23:59,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:23:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:59,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 18:23:59,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:23:59,670 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 92 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-11-29 18:23:59,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:23:59,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2020-11-29 18:23:59,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108583176] [2020-11-29 18:23:59,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 18:23:59,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:23:59,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 18:23:59,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-11-29 18:23:59,673 INFO L87 Difference]: Start difference. First operand 109 states and 177 transitions. Second operand 16 states. [2020-11-29 18:24:00,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:24:00,375 INFO L93 Difference]: Finished difference Result 240 states and 462 transitions. [2020-11-29 18:24:00,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-29 18:24:00,376 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 93 [2020-11-29 18:24:00,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:24:00,378 INFO L225 Difference]: With dead ends: 240 [2020-11-29 18:24:00,378 INFO L226 Difference]: Without dead ends: 107 [2020-11-29 18:24:00,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2020-11-29 18:24:00,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-29 18:24:00,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 84. [2020-11-29 18:24:00,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-29 18:24:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 116 transitions. [2020-11-29 18:24:00,409 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 116 transitions. Word has length 93 [2020-11-29 18:24:00,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:24:00,409 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 116 transitions. [2020-11-29 18:24:00,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 18:24:00,410 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 116 transitions. [2020-11-29 18:24:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-29 18:24:00,412 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:24:00,413 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 10, 9, 9, 8, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:24:00,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:24:00,634 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:24:00,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:24:00,635 INFO L82 PathProgramCache]: Analyzing trace with hash 740260986, now seen corresponding path program 2 times [2020-11-29 18:24:00,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:24:00,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809964223] [2020-11-29 18:24:00,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:24:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 18:24:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-11-29 18:24:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-29 18:24:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-11-29 18:24:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:00,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:01,032 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 67 proven. 142 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2020-11-29 18:24:01,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809964223] [2020-11-29 18:24:01,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393865723] [2020-11-29 18:24:01,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:24:01,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:24:01,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:24:01,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 18:24:01,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:24:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 30 proven. 217 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2020-11-29 18:24:01,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:24:01,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 17 [2020-11-29 18:24:01,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601820366] [2020-11-29 18:24:01,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-29 18:24:01,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:24:01,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-29 18:24:01,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-11-29 18:24:01,375 INFO L87 Difference]: Start difference. First operand 84 states and 116 transitions. Second operand 17 states. [2020-11-29 18:24:02,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:24:02,171 INFO L93 Difference]: Finished difference Result 214 states and 372 transitions. [2020-11-29 18:24:02,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-29 18:24:02,172 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 148 [2020-11-29 18:24:02,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:24:02,174 INFO L225 Difference]: With dead ends: 214 [2020-11-29 18:24:02,174 INFO L226 Difference]: Without dead ends: 134 [2020-11-29 18:24:02,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=184, Invalid=872, Unknown=0, NotChecked=0, Total=1056 [2020-11-29 18:24:02,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-29 18:24:02,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 114. [2020-11-29 18:24:02,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-29 18:24:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 169 transitions. [2020-11-29 18:24:02,210 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 169 transitions. Word has length 148 [2020-11-29 18:24:02,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:24:02,211 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 169 transitions. [2020-11-29 18:24:02,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-29 18:24:02,211 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 169 transitions. [2020-11-29 18:24:02,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-29 18:24:02,216 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:24:02,217 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 15, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:24:02,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:24:02,436 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:24:02,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:24:02,437 INFO L82 PathProgramCache]: Analyzing trace with hash 341307334, now seen corresponding path program 3 times [2020-11-29 18:24:02,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:24:02,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178092142] [2020-11-29 18:24:02,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:24:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 18:24:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 18:24:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-29 18:24:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-11-29 18:24:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 18:24:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:02,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1780 backedges. 170 proven. 320 refuted. 0 times theorem prover too weak. 1290 trivial. 0 not checked. [2020-11-29 18:24:03,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178092142] [2020-11-29 18:24:03,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048446184] [2020-11-29 18:24:03,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:24:03,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-29 18:24:03,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:24:03,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 18:24:03,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:24:03,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1780 backedges. 460 proven. 33 refuted. 0 times theorem prover too weak. 1287 trivial. 0 not checked. [2020-11-29 18:24:03,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:24:03,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2020-11-29 18:24:03,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721048958] [2020-11-29 18:24:03,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-29 18:24:03,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:24:03,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-29 18:24:03,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2020-11-29 18:24:03,432 INFO L87 Difference]: Start difference. First operand 114 states and 169 transitions. Second operand 20 states. [2020-11-29 18:24:04,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:24:04,116 INFO L93 Difference]: Finished difference Result 239 states and 381 transitions. [2020-11-29 18:24:04,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-29 18:24:04,117 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 255 [2020-11-29 18:24:04,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:24:04,120 INFO L225 Difference]: With dead ends: 239 [2020-11-29 18:24:04,120 INFO L226 Difference]: Without dead ends: 130 [2020-11-29 18:24:04,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2020-11-29 18:24:04,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-11-29 18:24:04,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-11-29 18:24:04,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-29 18:24:04,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 177 transitions. [2020-11-29 18:24:04,135 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 177 transitions. Word has length 255 [2020-11-29 18:24:04,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:24:04,136 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 177 transitions. [2020-11-29 18:24:04,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-29 18:24:04,136 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 177 transitions. [2020-11-29 18:24:04,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-11-29 18:24:04,145 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:24:04,145 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 29, 29, 26, 25, 17, 17, 17, 17, 17, 17, 17, 14, 14, 14, 14, 14, 14, 14, 12, 8, 8, 4, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:24:04,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 18:24:04,362 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:24:04,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:24:04,363 INFO L82 PathProgramCache]: Analyzing trace with hash 829071849, now seen corresponding path program 4 times [2020-11-29 18:24:04,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:24:04,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706928052] [2020-11-29 18:24:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:24:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 18:24:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 18:24:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 18:24:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:04,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 18:24:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-11-29 18:24:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 18:24:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 18:24:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 18:24:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5401 backedges. 309 proven. 1208 refuted. 0 times theorem prover too weak. 3884 trivial. 0 not checked. [2020-11-29 18:24:05,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706928052] [2020-11-29 18:24:05,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734015968] [2020-11-29 18:24:05,604 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:24:05,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:24:05,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:24:05,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 18:24:05,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:24:05,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5401 backedges. 130 proven. 938 refuted. 0 times theorem prover too weak. 4333 trivial. 0 not checked. [2020-11-29 18:24:05,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:24:05,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 20 [2020-11-29 18:24:05,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205218121] [2020-11-29 18:24:05,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-29 18:24:05,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:24:05,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-29 18:24:05,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2020-11-29 18:24:05,999 INFO L87 Difference]: Start difference. First operand 130 states and 177 transitions. Second operand 20 states. [2020-11-29 18:24:06,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:24:06,966 INFO L93 Difference]: Finished difference Result 298 states and 484 transitions. [2020-11-29 18:24:06,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-29 18:24:06,967 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 433 [2020-11-29 18:24:06,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:24:06,970 INFO L225 Difference]: With dead ends: 298 [2020-11-29 18:24:06,971 INFO L226 Difference]: Without dead ends: 177 [2020-11-29 18:24:06,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=268, Invalid=1454, Unknown=0, NotChecked=0, Total=1722 [2020-11-29 18:24:06,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-11-29 18:24:06,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 167. [2020-11-29 18:24:06,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-29 18:24:06,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 246 transitions. [2020-11-29 18:24:06,989 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 246 transitions. Word has length 433 [2020-11-29 18:24:06,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:24:06,991 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 246 transitions. [2020-11-29 18:24:06,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-29 18:24:06,991 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 246 transitions. [2020-11-29 18:24:07,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-11-29 18:24:07,001 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:24:07,002 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 26, 25, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 11, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:24:07,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:24:07,218 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:24:07,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:24:07,219 INFO L82 PathProgramCache]: Analyzing trace with hash 902497613, now seen corresponding path program 5 times [2020-11-29 18:24:07,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:24:07,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442267127] [2020-11-29 18:24:07,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:24:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 18:24:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 18:24:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 18:24:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-29 18:24:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:07,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 18:24:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-11-29 18:24:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 18:24:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 18:24:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:08,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 1102 proven. 902 refuted. 0 times theorem prover too weak. 3365 trivial. 0 not checked. [2020-11-29 18:24:08,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442267127] [2020-11-29 18:24:08,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530767204] [2020-11-29 18:24:08,618 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:24:08,784 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-11-29 18:24:08,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:24:08,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 18:24:08,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:24:09,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 918 proven. 135 refuted. 0 times theorem prover too weak. 4316 trivial. 0 not checked. [2020-11-29 18:24:09,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:24:09,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13] total 28 [2020-11-29 18:24:09,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247434819] [2020-11-29 18:24:09,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-29 18:24:09,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:24:09,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-29 18:24:09,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2020-11-29 18:24:09,158 INFO L87 Difference]: Start difference. First operand 167 states and 246 transitions. Second operand 28 states. [2020-11-29 18:24:10,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:24:10,336 INFO L93 Difference]: Finished difference Result 357 states and 602 transitions. [2020-11-29 18:24:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-29 18:24:10,337 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 433 [2020-11-29 18:24:10,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:24:10,341 INFO L225 Difference]: With dead ends: 357 [2020-11-29 18:24:10,341 INFO L226 Difference]: Without dead ends: 208 [2020-11-29 18:24:10,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=311, Invalid=1945, Unknown=0, NotChecked=0, Total=2256 [2020-11-29 18:24:10,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-11-29 18:24:10,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 194. [2020-11-29 18:24:10,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-29 18:24:10,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 279 transitions. [2020-11-29 18:24:10,368 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 279 transitions. Word has length 433 [2020-11-29 18:24:10,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:24:10,369 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 279 transitions. [2020-11-29 18:24:10,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-29 18:24:10,370 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 279 transitions. [2020-11-29 18:24:10,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-11-29 18:24:10,374 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:24:10,375 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 30, 30, 26, 25, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 11, 9, 7, 5, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:24:10,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:24:10,602 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:24:10,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:24:10,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1878610003, now seen corresponding path program 6 times [2020-11-29 18:24:10,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:24:10,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652502140] [2020-11-29 18:24:10,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:24:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:10,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 18:24:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:10,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:10,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 18:24:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 18:24:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 18:24:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-11-29 18:24:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 18:24:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-11-29 18:24:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 18:24:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:11,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:11,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5377 backedges. 849 proven. 1278 refuted. 0 times theorem prover too weak. 3250 trivial. 0 not checked. [2020-11-29 18:24:11,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652502140] [2020-11-29 18:24:11,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916416512] [2020-11-29 18:24:11,952 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:24:12,102 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-29 18:24:12,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:24:12,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 18:24:12,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:24:12,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5377 backedges. 660 proven. 100 refuted. 0 times theorem prover too weak. 4617 trivial. 0 not checked. [2020-11-29 18:24:12,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:24:12,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10] total 24 [2020-11-29 18:24:12,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769570092] [2020-11-29 18:24:12,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-29 18:24:12,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:24:12,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-29 18:24:12,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2020-11-29 18:24:12,414 INFO L87 Difference]: Start difference. First operand 194 states and 279 transitions. Second operand 24 states. [2020-11-29 18:24:13,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:24:13,526 INFO L93 Difference]: Finished difference Result 409 states and 617 transitions. [2020-11-29 18:24:13,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-29 18:24:13,527 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 433 [2020-11-29 18:24:13,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:24:13,530 INFO L225 Difference]: With dead ends: 409 [2020-11-29 18:24:13,530 INFO L226 Difference]: Without dead ends: 229 [2020-11-29 18:24:13,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 558 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=328, Invalid=2024, Unknown=0, NotChecked=0, Total=2352 [2020-11-29 18:24:13,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-11-29 18:24:13,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 187. [2020-11-29 18:24:13,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-11-29 18:24:13,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 265 transitions. [2020-11-29 18:24:13,559 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 265 transitions. Word has length 433 [2020-11-29 18:24:13,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:24:13,560 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 265 transitions. [2020-11-29 18:24:13,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-29 18:24:13,560 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 265 transitions. [2020-11-29 18:24:13,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2020-11-29 18:24:13,568 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:24:13,568 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 46, 45, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 18, 17, 12, 10, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:24:13,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 18:24:13,794 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:24:13,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:24:13,795 INFO L82 PathProgramCache]: Analyzing trace with hash -42359494, now seen corresponding path program 7 times [2020-11-29 18:24:13,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:24:13,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581527272] [2020-11-29 18:24:13,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:24:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 18:24:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 18:24:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 18:24:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-29 18:24:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 18:24:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 18:24:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:14,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-11-29 18:24:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 18:24:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 18:24:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-29 18:24:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-29 18:24:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 18:24:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 18:24:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:24:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 18:24:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 18:24:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:15,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 18:24:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 17593 backedges. 629 proven. 2860 refuted. 0 times theorem prover too weak. 14104 trivial. 0 not checked. [2020-11-29 18:24:16,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581527272] [2020-11-29 18:24:16,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928758222] [2020-11-29 18:24:16,479 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:24:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:16,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 18:24:16,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:24:17,235 INFO L134 CoverageAnalysis]: Checked inductivity of 17593 backedges. 709 proven. 1621 refuted. 0 times theorem prover too weak. 15263 trivial. 0 not checked. [2020-11-29 18:24:17,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:24:17,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 23 [2020-11-29 18:24:17,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848730218] [2020-11-29 18:24:17,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-29 18:24:17,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:24:17,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-29 18:24:17,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2020-11-29 18:24:17,239 INFO L87 Difference]: Start difference. First operand 187 states and 265 transitions. Second operand 23 states. [2020-11-29 18:24:18,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:24:18,896 INFO L93 Difference]: Finished difference Result 444 states and 754 transitions. [2020-11-29 18:24:18,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-29 18:24:18,897 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 773 [2020-11-29 18:24:18,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:24:18,901 INFO L225 Difference]: With dead ends: 444 [2020-11-29 18:24:18,901 INFO L226 Difference]: Without dead ends: 224 [2020-11-29 18:24:18,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1049 GetRequests, 995 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=400, Invalid=2680, Unknown=0, NotChecked=0, Total=3080 [2020-11-29 18:24:18,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-11-29 18:24:18,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 197. [2020-11-29 18:24:18,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-11-29 18:24:18,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 267 transitions. [2020-11-29 18:24:18,924 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 267 transitions. Word has length 773 [2020-11-29 18:24:18,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:24:18,924 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 267 transitions. [2020-11-29 18:24:18,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-29 18:24:18,925 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 267 transitions. [2020-11-29 18:24:18,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-11-29 18:24:18,928 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:24:18,929 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:24:19,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 18:24:19,154 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:24:19,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:24:19,155 INFO L82 PathProgramCache]: Analyzing trace with hash -232840799, now seen corresponding path program 8 times [2020-11-29 18:24:19,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:24:19,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727744966] [2020-11-29 18:24:19,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:24:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:24:19,228 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:24:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:24:19,294 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:24:19,437 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:24:19,438 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 18:24:19,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 18:24:19,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:24:19 BoogieIcfgContainer [2020-11-29 18:24:19,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:24:19,632 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:24:19,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:24:19,633 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:24:19,634 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:23:53" (3/4) ... [2020-11-29 18:24:19,636 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 18:24:19,806 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8179845e-c61b-4468-bc26-8cb609a2ba7e/bin/uautomizer/witness.graphml [2020-11-29 18:24:19,806 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:24:19,808 INFO L168 Benchmark]: Toolchain (without parser) took 27533.63 ms. Allocated memory was 127.9 MB in the beginning and 889.2 MB in the end (delta: 761.3 MB). Free memory was 95.9 MB in the beginning and 474.4 MB in the end (delta: -378.5 MB). Peak memory consumption was 381.7 MB. Max. memory is 16.1 GB. [2020-11-29 18:24:19,808 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 77.6 MB. Free memory was 36.1 MB in the beginning and 36.1 MB in the end (delta: 33.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:24:19,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.50 ms. Allocated memory is still 127.9 MB. Free memory was 95.7 MB in the beginning and 103.9 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:24:19,809 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.92 ms. Allocated memory is still 127.9 MB. Free memory was 103.9 MB in the beginning and 102.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:24:19,809 INFO L168 Benchmark]: Boogie Preprocessor took 30.93 ms. Allocated memory is still 127.9 MB. Free memory was 102.5 MB in the beginning and 101.8 MB in the end (delta: 714.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:24:19,810 INFO L168 Benchmark]: RCFGBuilder took 476.43 ms. Allocated memory is still 127.9 MB. Free memory was 101.8 MB in the beginning and 88.5 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:24:19,810 INFO L168 Benchmark]: TraceAbstraction took 26510.39 ms. Allocated memory was 127.9 MB in the beginning and 889.2 MB in the end (delta: 761.3 MB). Free memory was 88.5 MB in the beginning and 494.4 MB in the end (delta: -405.8 MB). Peak memory consumption was 357.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:24:19,811 INFO L168 Benchmark]: Witness Printer took 174.12 ms. Allocated memory is still 889.2 MB. Free memory was 494.4 MB in the beginning and 474.4 MB in the end (delta: 19.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-29 18:24:19,813 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 77.6 MB. Free memory was 36.1 MB in the beginning and 36.1 MB in the end (delta: 33.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 300.50 ms. Allocated memory is still 127.9 MB. Free memory was 95.7 MB in the beginning and 103.9 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.92 ms. Allocated memory is still 127.9 MB. Free memory was 103.9 MB in the beginning and 102.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.93 ms. Allocated memory is still 127.9 MB. Free memory was 102.5 MB in the beginning and 101.8 MB in the end (delta: 714.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 476.43 ms. Allocated memory is still 127.9 MB. Free memory was 101.8 MB in the beginning and 88.5 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 26510.39 ms. Allocated memory was 127.9 MB in the beginning and 889.2 MB in the end (delta: 761.3 MB). Free memory was 88.5 MB in the beginning and 494.4 MB in the end (delta: -405.8 MB). Peak memory consumption was 357.5 MB. Max. memory is 16.1 GB. * Witness Printer took 174.12 ms. Allocated memory is still 889.2 MB. Free memory was 494.4 MB in the beginning and 474.4 MB in the end (delta: 19.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L38] int x = 8; [L39] CALL, EXPR fibo1(x) VAL [\old(n)=8] [L10] COND FALSE !(n < 1) VAL [\old(n)=8, n=8] [L12] COND FALSE !(n == 1) VAL [\old(n)=8, n=8] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=7] [L20] COND FALSE !(n < 1) VAL [\old(n)=7, n=7] [L22] COND FALSE !(n == 1) VAL [\old(n)=7, n=7] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=6] [L10] COND FALSE !(n < 1) VAL [\old(n)=6, n=6] [L12] COND FALSE !(n == 1) VAL [\old(n)=6, n=6] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=5] [L20] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L22] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=4] [L10] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L12] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=4, fibo2(n-1)=2, n=4] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=4, fibo2(n-1)=2, fibo2(n-2)=1, n=4] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=5, fibo1(n-1)=3, n=5] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=5, fibo1(n-1)=3, fibo1(n-2)=2, n=5] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=6, fibo2(n-1)=5, n=6] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=4] [L20] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L22] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=4, fibo1(n-1)=2, n=4] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=4, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=6, fibo2(n-1)=5, fibo2(n-2)=3, n=6] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=7, fibo1(n-1)=8, n=7] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=5] [L10] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L12] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=4] [L20] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L22] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=4, fibo1(n-1)=2, n=4] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=4, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=5, fibo2(n-1)=3, n=5] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=5, fibo2(n-1)=3, fibo2(n-2)=2, n=5] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=7, fibo1(n-1)=8, fibo1(n-2)=5, n=7] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=8, fibo2(n-1)=13, n=8] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=6] [L20] COND FALSE !(n < 1) VAL [\old(n)=6, n=6] [L22] COND FALSE !(n == 1) VAL [\old(n)=6, n=6] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=5] [L10] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L12] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=4] [L20] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L22] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=4, fibo1(n-1)=2, n=4] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=4, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=5, fibo2(n-1)=3, n=5] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=5, fibo2(n-1)=3, fibo2(n-2)=2, n=5] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=6, fibo1(n-1)=5, n=6] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=4] [L10] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L12] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=4, fibo2(n-1)=2, n=4] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=4, fibo2(n-1)=2, fibo2(n-2)=1, n=4] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=6, fibo1(n-1)=5, fibo1(n-2)=3, n=6] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=8, fibo2(n-1)=13, fibo2(n-2)=8, n=8] [L15] return fibo2(n-1) + fibo2(n-2); [L39] RET, EXPR fibo1(x) [L39] int result = fibo1(x); [L40] COND TRUE result == 21 [L4] __assert_fail("0", "fibo_2calls_8-2.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.2s, OverallIterations: 15, TraceHistogramMax: 57, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 460 SDtfs, 919 SDslu, 3458 SDs, 0 SdLazy, 6206 SolverSat, 1032 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3872 GetRequests, 3508 SyntacticMatches, 3 SemanticMatches, 361 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2599 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 202 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 5959 NumberOfCodeBlocks, 5498 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 5473 ConstructedInterpolants, 0 QuantifiedInterpolants, 3194115 SizeOfPredicates, 68 NumberOfNonLiveVariables, 5308 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 62759/72726 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...