./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.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_9094f5b6-ba6b-40ff-b838-eb09b98cea8e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9094f5b6-ba6b-40ff-b838-eb09b98cea8e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9094f5b6-ba6b-40ff-b838-eb09b98cea8e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9094f5b6-ba6b-40ff-b838-eb09b98cea8e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9094f5b6-ba6b-40ff-b838-eb09b98cea8e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9094f5b6-ba6b-40ff-b838-eb09b98cea8e/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 c6d41d2a2a28e240d9196f063199b00c22e981e9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:59:31,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:59:31,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:59:31,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:59:31,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:59:31,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:59:31,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:59:31,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:59:31,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:59:31,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:59:31,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:59:31,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:59:31,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:59:31,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:59:31,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:59:31,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:59:31,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:59:31,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:59:31,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:59:31,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:59:31,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:59:31,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:59:31,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:59:31,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:59:31,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:59:31,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:59:31,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:59:31,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:59:31,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:59:31,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:59:31,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:59:31,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:59:31,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:59:31,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:59:31,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:59:31,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:59:31,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:59:31,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:59:31,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:59:31,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:59:31,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:59:31,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9094f5b6-ba6b-40ff-b838-eb09b98cea8e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:59:31,812 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:59:31,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:59:31,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:59:31,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:59:31,815 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:59:31,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:59:31,816 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:59:31,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:59:31,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:59:31,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:59:31,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:59:31,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:59:31,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:59:31,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:59:31,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:59:31,819 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:59:31,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:59:31,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:59:31,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:59:31,820 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:59:31,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:59:31,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:59:31,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:59:31,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:59:31,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:59:31,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:59:31,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:59:31,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:59:31,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:59:31,822 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_9094f5b6-ba6b-40ff-b838-eb09b98cea8e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9094f5b6-ba6b-40ff-b838-eb09b98cea8e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6d41d2a2a28e240d9196f063199b00c22e981e9 [2020-11-28 02:59:32,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:59:32,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:59:32,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:59:32,147 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:59:32,148 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:59:32,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9094f5b6-ba6b-40ff-b838-eb09b98cea8e/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c [2020-11-28 02:59:32,245 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9094f5b6-ba6b-40ff-b838-eb09b98cea8e/bin/uautomizer/data/4938fa77e/cec3a1d85b4a47b7877a0ca19296221a/FLAGd69b7b23f [2020-11-28 02:59:32,731 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:59:32,743 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9094f5b6-ba6b-40ff-b838-eb09b98cea8e/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c [2020-11-28 02:59:32,753 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9094f5b6-ba6b-40ff-b838-eb09b98cea8e/bin/uautomizer/data/4938fa77e/cec3a1d85b4a47b7877a0ca19296221a/FLAGd69b7b23f [2020-11-28 02:59:33,092 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9094f5b6-ba6b-40ff-b838-eb09b98cea8e/bin/uautomizer/data/4938fa77e/cec3a1d85b4a47b7877a0ca19296221a [2020-11-28 02:59:33,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:59:33,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:59:33,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:59:33,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:59:33,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:59:33,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:33" (1/1) ... [2020-11-28 02:59:33,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1360a84c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:33, skipping insertion in model container [2020-11-28 02:59:33,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:33" (1/1) ... [2020-11-28 02:59:33,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:59:33,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:59:33,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:59:33,488 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:59:33,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:59:33,535 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:59:33,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:33 WrapperNode [2020-11-28 02:59:33,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:59:33,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:59:33,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:59:33,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:59:33,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:33" (1/1) ... [2020-11-28 02:59:33,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:33" (1/1) ... [2020-11-28 02:59:33,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:59:33,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:59:33,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:59:33,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:59:33,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:33" (1/1) ... [2020-11-28 02:59:33,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:33" (1/1) ... [2020-11-28 02:59:33,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:33" (1/1) ... [2020-11-28 02:59:33,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:33" (1/1) ... [2020-11-28 02:59:33,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:33" (1/1) ... [2020-11-28 02:59:33,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:33" (1/1) ... [2020-11-28 02:59:33,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:33" (1/1) ... [2020-11-28 02:59:33,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:59:33,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:59:33,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:59:33,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:59:33,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9094f5b6-ba6b-40ff-b838-eb09b98cea8e/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 [2020-11-28 02:59:33,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:59:33,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:59:33,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:59:33,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:59:34,201 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:59:34,201 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-11-28 02:59:34,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:34 BoogieIcfgContainer [2020-11-28 02:59:34,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:59:34,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:59:34,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:59:34,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:59:34,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:59:33" (1/3) ... [2020-11-28 02:59:34,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755cf29e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:59:34, skipping insertion in model container [2020-11-28 02:59:34,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:33" (2/3) ... [2020-11-28 02:59:34,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755cf29e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:59:34, skipping insertion in model container [2020-11-28 02:59:34,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:34" (3/3) ... [2020-11-28 02:59:34,211 INFO L111 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.i.v+cfa-reducer.c [2020-11-28 02:59:34,222 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:59:34,226 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-11-28 02:59:34,237 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-11-28 02:59:34,264 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:59:34,264 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:59:34,264 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:59:34,264 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:59:34,265 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:59:34,265 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:59:34,265 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:59:34,265 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:59:34,284 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-28 02:59:34,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:59:34,289 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:34,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:34,290 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:34,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:34,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1241029004, now seen corresponding path program 1 times [2020-11-28 02:59:34,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:34,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116690248] [2020-11-28 02:59:34,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:34,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116690248] [2020-11-28 02:59:34,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:34,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:59:34,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824725844] [2020-11-28 02:59:34,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:59:34,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:34,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:59:34,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:59:34,532 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-28 02:59:34,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:34,578 INFO L93 Difference]: Finished difference Result 99 states and 126 transitions. [2020-11-28 02:59:34,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:59:34,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 02:59:34,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:34,592 INFO L225 Difference]: With dead ends: 99 [2020-11-28 02:59:34,592 INFO L226 Difference]: Without dead ends: 72 [2020-11-28 02:59:34,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:59:34,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-28 02:59:34,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2020-11-28 02:59:34,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-28 02:59:34,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-11-28 02:59:34,653 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 9 [2020-11-28 02:59:34,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:34,654 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-11-28 02:59:34,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:59:34,655 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-11-28 02:59:34,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:59:34,655 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:34,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:34,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:59:34,656 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:34,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:34,659 INFO L82 PathProgramCache]: Analyzing trace with hash -182800492, now seen corresponding path program 1 times [2020-11-28 02:59:34,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:34,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675109979] [2020-11-28 02:59:34,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:34,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675109979] [2020-11-28 02:59:34,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:34,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:59:34,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129780450] [2020-11-28 02:59:34,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:59:34,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:34,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:59:34,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:59:34,809 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 4 states. [2020-11-28 02:59:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:34,951 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2020-11-28 02:59:34,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:59:34,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 02:59:34,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:34,956 INFO L225 Difference]: With dead ends: 73 [2020-11-28 02:59:34,956 INFO L226 Difference]: Without dead ends: 71 [2020-11-28 02:59:34,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:34,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-28 02:59:34,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2020-11-28 02:59:34,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-28 02:59:34,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-11-28 02:59:34,973 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 10 [2020-11-28 02:59:34,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:34,974 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-11-28 02:59:34,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:59:34,974 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-11-28 02:59:34,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:59:34,976 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:34,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:34,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:59:34,977 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:34,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:34,978 INFO L82 PathProgramCache]: Analyzing trace with hash -178198776, now seen corresponding path program 1 times [2020-11-28 02:59:34,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:34,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087856876] [2020-11-28 02:59:34,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:35,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087856876] [2020-11-28 02:59:35,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:35,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:59:35,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759329365] [2020-11-28 02:59:35,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:59:35,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:35,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:59:35,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:59:35,061 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 4 states. [2020-11-28 02:59:35,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:35,166 INFO L93 Difference]: Finished difference Result 143 states and 158 transitions. [2020-11-28 02:59:35,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:59:35,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 02:59:35,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:35,170 INFO L225 Difference]: With dead ends: 143 [2020-11-28 02:59:35,170 INFO L226 Difference]: Without dead ends: 93 [2020-11-28 02:59:35,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:35,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-28 02:59:35,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 52. [2020-11-28 02:59:35,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-28 02:59:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-11-28 02:59:35,182 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 10 [2020-11-28 02:59:35,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:35,182 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-11-28 02:59:35,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:59:35,182 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-11-28 02:59:35,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:59:35,191 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:35,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:35,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:59:35,193 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:35,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:35,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1229188689, now seen corresponding path program 1 times [2020-11-28 02:59:35,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:35,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614176572] [2020-11-28 02:59:35,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:35,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614176572] [2020-11-28 02:59:35,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:35,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:59:35,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815584449] [2020-11-28 02:59:35,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:59:35,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:35,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:59:35,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:59:35,286 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 4 states. [2020-11-28 02:59:35,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:35,406 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2020-11-28 02:59:35,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:59:35,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 02:59:35,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:35,408 INFO L225 Difference]: With dead ends: 92 [2020-11-28 02:59:35,408 INFO L226 Difference]: Without dead ends: 90 [2020-11-28 02:59:35,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:35,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-11-28 02:59:35,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 50. [2020-11-28 02:59:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-28 02:59:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-11-28 02:59:35,423 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 11 [2020-11-28 02:59:35,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:35,427 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-11-28 02:59:35,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:59:35,429 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-11-28 02:59:35,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 02:59:35,429 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:35,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:35,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:59:35,430 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:35,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:35,431 INFO L82 PathProgramCache]: Analyzing trace with hash 422614912, now seen corresponding path program 1 times [2020-11-28 02:59:35,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:35,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76729349] [2020-11-28 02:59:35,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:35,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76729349] [2020-11-28 02:59:35,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:35,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:59:35,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66361761] [2020-11-28 02:59:35,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:59:35,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:35,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:59:35,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:59:35,525 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 4 states. [2020-11-28 02:59:35,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:35,622 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-11-28 02:59:35,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:59:35,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 02:59:35,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:35,624 INFO L225 Difference]: With dead ends: 69 [2020-11-28 02:59:35,624 INFO L226 Difference]: Without dead ends: 67 [2020-11-28 02:59:35,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:35,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-28 02:59:35,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 48. [2020-11-28 02:59:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-28 02:59:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-11-28 02:59:35,633 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 12 [2020-11-28 02:59:35,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:35,633 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-11-28 02:59:35,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:59:35,634 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-11-28 02:59:35,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 02:59:35,634 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:35,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:35,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:59:35,635 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:35,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:35,636 INFO L82 PathProgramCache]: Analyzing trace with hash 549862385, now seen corresponding path program 1 times [2020-11-28 02:59:35,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:35,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159012400] [2020-11-28 02:59:35,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:35,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:35,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159012400] [2020-11-28 02:59:35,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:35,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:59:35,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833986553] [2020-11-28 02:59:35,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:59:35,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:35,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:59:35,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:35,700 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2020-11-28 02:59:35,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:35,860 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-11-28 02:59:35,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:59:35,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 02:59:35,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:35,862 INFO L225 Difference]: With dead ends: 87 [2020-11-28 02:59:35,862 INFO L226 Difference]: Without dead ends: 85 [2020-11-28 02:59:35,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:59:35,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-28 02:59:35,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 46. [2020-11-28 02:59:35,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-28 02:59:35,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-11-28 02:59:35,866 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 12 [2020-11-28 02:59:35,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:35,867 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-11-28 02:59:35,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:59:35,867 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-11-28 02:59:35,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:59:35,867 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:35,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:35,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:59:35,867 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:35,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:35,868 INFO L82 PathProgramCache]: Analyzing trace with hash 216166494, now seen corresponding path program 1 times [2020-11-28 02:59:35,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:35,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927098746] [2020-11-28 02:59:35,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:35,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927098746] [2020-11-28 02:59:35,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:35,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:59:35,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795053119] [2020-11-28 02:59:35,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:59:35,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:35,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:59:35,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:35,938 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 5 states. [2020-11-28 02:59:36,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:36,113 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2020-11-28 02:59:36,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:59:36,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 02:59:36,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:36,115 INFO L225 Difference]: With dead ends: 75 [2020-11-28 02:59:36,115 INFO L226 Difference]: Without dead ends: 73 [2020-11-28 02:59:36,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:59:36,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-28 02:59:36,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 44. [2020-11-28 02:59:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-28 02:59:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-11-28 02:59:36,121 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 13 [2020-11-28 02:59:36,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:36,121 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-11-28 02:59:36,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:59:36,121 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-11-28 02:59:36,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:59:36,122 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:36,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:36,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:59:36,122 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:36,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:36,123 INFO L82 PathProgramCache]: Analyzing trace with hash -134129160, now seen corresponding path program 1 times [2020-11-28 02:59:36,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:36,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271441352] [2020-11-28 02:59:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:36,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:36,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271441352] [2020-11-28 02:59:36,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:36,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:59:36,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10429255] [2020-11-28 02:59:36,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:59:36,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:36,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:59:36,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:59:36,198 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 4 states. [2020-11-28 02:59:36,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:36,276 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2020-11-28 02:59:36,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:59:36,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 02:59:36,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:36,277 INFO L225 Difference]: With dead ends: 83 [2020-11-28 02:59:36,277 INFO L226 Difference]: Without dead ends: 81 [2020-11-28 02:59:36,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:36,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-28 02:59:36,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 42. [2020-11-28 02:59:36,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 02:59:36,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-11-28 02:59:36,283 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 13 [2020-11-28 02:59:36,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:36,283 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-11-28 02:59:36,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:59:36,287 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-11-28 02:59:36,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:59:36,288 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:36,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:36,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 02:59:36,289 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:36,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:36,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1888767159, now seen corresponding path program 1 times [2020-11-28 02:59:36,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:36,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467681867] [2020-11-28 02:59:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:36,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467681867] [2020-11-28 02:59:36,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:36,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:59:36,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731130785] [2020-11-28 02:59:36,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:59:36,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:36,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:59:36,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:36,357 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 5 states. [2020-11-28 02:59:36,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:36,447 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-11-28 02:59:36,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:59:36,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-28 02:59:36,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:36,448 INFO L225 Difference]: With dead ends: 57 [2020-11-28 02:59:36,448 INFO L226 Difference]: Without dead ends: 55 [2020-11-28 02:59:36,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:59:36,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-28 02:59:36,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 40. [2020-11-28 02:59:36,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-28 02:59:36,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-11-28 02:59:36,455 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 14 [2020-11-28 02:59:36,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:36,455 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-11-28 02:59:36,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:59:36,456 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-11-28 02:59:36,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 02:59:36,456 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:36,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:36,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 02:59:36,457 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:36,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:36,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1577766343, now seen corresponding path program 1 times [2020-11-28 02:59:36,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:36,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563025128] [2020-11-28 02:59:36,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:36,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563025128] [2020-11-28 02:59:36,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:36,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:59:36,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466925990] [2020-11-28 02:59:36,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:59:36,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:36,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:59:36,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:59:36,508 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2020-11-28 02:59:36,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:36,565 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-11-28 02:59:36,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:59:36,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-28 02:59:36,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:36,566 INFO L225 Difference]: With dead ends: 57 [2020-11-28 02:59:36,566 INFO L226 Difference]: Without dead ends: 55 [2020-11-28 02:59:36,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:36,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-28 02:59:36,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 38. [2020-11-28 02:59:36,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-28 02:59:36,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-11-28 02:59:36,572 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 15 [2020-11-28 02:59:36,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:36,572 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-11-28 02:59:36,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:59:36,572 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-11-28 02:59:36,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 02:59:36,573 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:36,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:36,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 02:59:36,574 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:36,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:36,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1666122514, now seen corresponding path program 1 times [2020-11-28 02:59:36,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:36,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890632063] [2020-11-28 02:59:36,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:36,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890632063] [2020-11-28 02:59:36,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:36,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:59:36,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587651083] [2020-11-28 02:59:36,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:59:36,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:36,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:59:36,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:59:36,630 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 4 states. [2020-11-28 02:59:36,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:36,723 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2020-11-28 02:59:36,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:59:36,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-28 02:59:36,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:36,724 INFO L225 Difference]: With dead ends: 65 [2020-11-28 02:59:36,724 INFO L226 Difference]: Without dead ends: 63 [2020-11-28 02:59:36,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:36,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-28 02:59:36,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36. [2020-11-28 02:59:36,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 02:59:36,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-11-28 02:59:36,729 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 16 [2020-11-28 02:59:36,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:36,729 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-11-28 02:59:36,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:59:36,729 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-11-28 02:59:36,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:59:36,730 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:36,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:36,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 02:59:36,730 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:36,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:36,731 INFO L82 PathProgramCache]: Analyzing trace with hash 110196528, now seen corresponding path program 1 times [2020-11-28 02:59:36,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:36,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079712323] [2020-11-28 02:59:36,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:36,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079712323] [2020-11-28 02:59:36,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:36,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:59:36,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306331506] [2020-11-28 02:59:36,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:59:36,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:36,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:59:36,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:36,794 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2020-11-28 02:59:36,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:36,933 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2020-11-28 02:59:36,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:59:36,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-28 02:59:36,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:36,934 INFO L225 Difference]: With dead ends: 70 [2020-11-28 02:59:36,934 INFO L226 Difference]: Without dead ends: 68 [2020-11-28 02:59:36,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:59:36,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-28 02:59:36,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 34. [2020-11-28 02:59:36,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 02:59:36,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-11-28 02:59:36,940 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 17 [2020-11-28 02:59:36,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:36,940 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-11-28 02:59:36,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:59:36,940 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-11-28 02:59:36,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:59:36,941 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:36,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:36,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 02:59:36,941 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:36,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:36,942 INFO L82 PathProgramCache]: Analyzing trace with hash -878868773, now seen corresponding path program 1 times [2020-11-28 02:59:36,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:36,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649356580] [2020-11-28 02:59:36,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:37,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649356580] [2020-11-28 02:59:37,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:37,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:59:37,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127151934] [2020-11-28 02:59:37,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:59:37,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:37,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:59:37,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:59:37,007 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 6 states. [2020-11-28 02:59:37,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:37,134 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-11-28 02:59:37,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:59:37,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-28 02:59:37,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:37,135 INFO L225 Difference]: With dead ends: 58 [2020-11-28 02:59:37,135 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 02:59:37,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-28 02:59:37,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 02:59:37,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 32. [2020-11-28 02:59:37,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-28 02:59:37,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-11-28 02:59:37,140 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 18 [2020-11-28 02:59:37,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:37,140 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-11-28 02:59:37,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:59:37,140 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-11-28 02:59:37,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:59:37,141 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:37,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:37,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 02:59:37,141 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:37,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:37,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1475122023, now seen corresponding path program 1 times [2020-11-28 02:59:37,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:37,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212208748] [2020-11-28 02:59:37,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:37,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:37,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212208748] [2020-11-28 02:59:37,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:37,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:59:37,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876104240] [2020-11-28 02:59:37,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:59:37,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:37,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:59:37,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:37,203 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-11-28 02:59:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:37,367 INFO L93 Difference]: Finished difference Result 83 states and 97 transitions. [2020-11-28 02:59:37,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:59:37,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-28 02:59:37,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:37,368 INFO L225 Difference]: With dead ends: 83 [2020-11-28 02:59:37,368 INFO L226 Difference]: Without dead ends: 81 [2020-11-28 02:59:37,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:59:37,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-28 02:59:37,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 30. [2020-11-28 02:59:37,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 02:59:37,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-11-28 02:59:37,374 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2020-11-28 02:59:37,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:37,374 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-11-28 02:59:37,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:59:37,374 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-11-28 02:59:37,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 02:59:37,375 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:37,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:37,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 02:59:37,376 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:37,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:37,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1515863716, now seen corresponding path program 1 times [2020-11-28 02:59:37,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:37,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377873426] [2020-11-28 02:59:37,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:37,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:37,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377873426] [2020-11-28 02:59:37,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:37,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:59:37,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136581294] [2020-11-28 02:59:37,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:59:37,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:37,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:59:37,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:59:37,456 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-11-28 02:59:37,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:37,635 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2020-11-28 02:59:37,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:59:37,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-11-28 02:59:37,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:37,636 INFO L225 Difference]: With dead ends: 56 [2020-11-28 02:59:37,636 INFO L226 Difference]: Without dead ends: 54 [2020-11-28 02:59:37,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-28 02:59:37,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-28 02:59:37,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 28. [2020-11-28 02:59:37,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 02:59:37,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-11-28 02:59:37,641 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2020-11-28 02:59:37,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:37,643 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-11-28 02:59:37,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:59:37,644 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-11-28 02:59:37,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 02:59:37,646 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:37,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:37,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 02:59:37,648 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:37,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:37,649 INFO L82 PathProgramCache]: Analyzing trace with hash -252858878, now seen corresponding path program 1 times [2020-11-28 02:59:37,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:37,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679636686] [2020-11-28 02:59:37,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:37,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679636686] [2020-11-28 02:59:37,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:37,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:59:37,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208076442] [2020-11-28 02:59:37,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:59:37,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:37,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:59:37,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:59:37,726 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-11-28 02:59:37,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:37,948 INFO L93 Difference]: Finished difference Result 121 states and 143 transitions. [2020-11-28 02:59:37,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:59:37,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-28 02:59:37,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:37,949 INFO L225 Difference]: With dead ends: 121 [2020-11-28 02:59:37,949 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:59:37,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:59:37,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:59:37,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:59:37,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:59:37,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:59:37,951 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-11-28 02:59:37,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:37,951 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:59:37,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:59:37,951 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:59:37,951 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:59:37,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 02:59:37,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:59:38,114 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2020-11-28 02:59:38,263 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 98 [2020-11-28 02:59:38,392 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 75 [2020-11-28 02:59:38,586 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 17 [2020-11-28 02:59:39,015 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 33 [2020-11-28 02:59:39,260 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 9 [2020-11-28 02:59:39,262 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,262 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,262 INFO L274 CegarLoopResult]: For program point L151(lines 151 281) no Hoare annotation was computed. [2020-11-28 02:59:39,262 INFO L274 CegarLoopResult]: For program point L110(lines 110 123) no Hoare annotation was computed. [2020-11-28 02:59:39,262 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,262 INFO L274 CegarLoopResult]: For program point L36(lines 36 300) no Hoare annotation was computed. [2020-11-28 02:59:39,263 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,263 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:59:39,263 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:59:39,263 INFO L274 CegarLoopResult]: For program point L86(lines 86 127) no Hoare annotation was computed. [2020-11-28 02:59:39,263 INFO L274 CegarLoopResult]: For program point L20(lines 20 312) no Hoare annotation was computed. [2020-11-28 02:59:39,263 INFO L274 CegarLoopResult]: For program point L243(lines 243 267) no Hoare annotation was computed. [2020-11-28 02:59:39,263 INFO L274 CegarLoopResult]: For program point L45(lines 45 288) no Hoare annotation was computed. [2020-11-28 02:59:39,263 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,263 INFO L270 CegarLoopResult]: At program point L293(lines 38 294) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~main__j~0) (<= (+ ULTIMATE.start_main_~main__j~0 5) ULTIMATE.start_main_~main__bufsize~0) (<= 0 ULTIMATE.start_main_~main__i~0) (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__len~0) (<= (+ ULTIMATE.start_main_~main__limit~0 4) ULTIMATE.start_main_~main__bufsize~0)) [2020-11-28 02:59:39,263 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,263 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,263 INFO L274 CegarLoopResult]: For program point L227(lines 227 269) no Hoare annotation was computed. [2020-11-28 02:59:39,264 INFO L274 CegarLoopResult]: For program point L4-2(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,264 INFO L274 CegarLoopResult]: For program point L4-3(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,264 INFO L274 CegarLoopResult]: For program point L4-4(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,264 INFO L274 CegarLoopResult]: For program point L4-5(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,264 INFO L274 CegarLoopResult]: For program point L4-6(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,264 INFO L274 CegarLoopResult]: For program point L4-7(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,264 INFO L274 CegarLoopResult]: For program point L4-8(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,264 INFO L274 CegarLoopResult]: For program point L4-9(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,264 INFO L274 CegarLoopResult]: For program point L4-10(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,264 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,264 INFO L274 CegarLoopResult]: For program point L4-11(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,265 INFO L274 CegarLoopResult]: For program point L4-12(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,265 INFO L274 CegarLoopResult]: For program point L4-13(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,265 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,265 INFO L274 CegarLoopResult]: For program point L4-14(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,265 INFO L277 CegarLoopResult]: At program point L310(lines 13 313) the Hoare annotation is: true [2020-11-28 02:59:39,265 INFO L274 CegarLoopResult]: For program point L4-15(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,265 INFO L274 CegarLoopResult]: For program point L4-16(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,265 INFO L274 CegarLoopResult]: For program point L4-17(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,265 INFO L274 CegarLoopResult]: For program point L4-18(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,265 INFO L274 CegarLoopResult]: For program point L4-19(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,265 INFO L274 CegarLoopResult]: For program point L4-20(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,265 INFO L274 CegarLoopResult]: For program point L4-21(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,266 INFO L274 CegarLoopResult]: For program point L4-22(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,266 INFO L274 CegarLoopResult]: For program point L4-23(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,266 INFO L274 CegarLoopResult]: For program point L4-24(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,266 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,266 INFO L274 CegarLoopResult]: For program point L203(lines 203 273) no Hoare annotation was computed. [2020-11-28 02:59:39,266 INFO L274 CegarLoopResult]: For program point L4-25(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,266 INFO L274 CegarLoopResult]: For program point L4-26(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,266 INFO L274 CegarLoopResult]: For program point L4-27(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,266 INFO L274 CegarLoopResult]: For program point L4-28(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,266 INFO L274 CegarLoopResult]: For program point L4-29(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,266 INFO L274 CegarLoopResult]: For program point L38(lines 38 294) no Hoare annotation was computed. [2020-11-28 02:59:39,267 INFO L274 CegarLoopResult]: For program point L4-30(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,267 INFO L274 CegarLoopResult]: For program point L4-31(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,267 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,267 INFO L274 CegarLoopResult]: For program point L163(lines 163 279) no Hoare annotation was computed. [2020-11-28 02:59:39,267 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,267 INFO L270 CegarLoopResult]: At program point L304(lines 25 312) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~main__i~0) (<= (+ ULTIMATE.start_main_~main__limit~0 4) ULTIMATE.start_main_~main__bufsize~0)) [2020-11-28 02:59:39,267 INFO L274 CegarLoopResult]: For program point L139(lines 139 283) no Hoare annotation was computed. [2020-11-28 02:59:39,267 INFO L274 CegarLoopResult]: For program point L98(lines 98 125) no Hoare annotation was computed. [2020-11-28 02:59:39,267 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 02:59:39,267 INFO L274 CegarLoopResult]: For program point L255(lines 255 265) no Hoare annotation was computed. [2020-11-28 02:59:39,268 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,268 INFO L274 CegarLoopResult]: For program point L57(lines 57 286) no Hoare annotation was computed. [2020-11-28 02:59:39,268 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,268 INFO L274 CegarLoopResult]: For program point L74(lines 74 129) no Hoare annotation was computed. [2020-11-28 02:59:39,268 INFO L270 CegarLoopResult]: At program point L264(lines 31 306) the Hoare annotation is: (let ((.cse3 (<= (+ ULTIMATE.start_main_~main__j~0 4) ULTIMATE.start_main_~main__bufsize~0))) (let ((.cse1 (let ((.cse4 (<= 1 ULTIMATE.start_main_~main__i~0))) (or (and .cse3 .cse4) (and (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 0)) .cse4)))) (.cse2 (<= 1 ULTIMATE.start_main_~main__j~0)) (.cse0 (<= (+ ULTIMATE.start_main_~main__limit~0 4) ULTIMATE.start_main_~main__bufsize~0))) (or (and (= ULTIMATE.start_main_~main__j~0 0) (<= 0 ULTIMATE.start_main_~main__i~0) (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__len~0) .cse0) (and .cse1 .cse2 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~14 0)) .cse0) (and .cse3 .cse1 .cse2 .cse0)))) [2020-11-28 02:59:39,268 INFO L274 CegarLoopResult]: For program point L66(lines 66 285) no Hoare annotation was computed. [2020-11-28 02:59:39,268 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:59:39,268 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,268 INFO L274 CegarLoopResult]: For program point L215(lines 215 271) no Hoare annotation was computed. [2020-11-28 02:59:39,269 INFO L274 CegarLoopResult]: For program point L191(lines 191 275) no Hoare annotation was computed. [2020-11-28 02:59:39,269 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,269 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,269 INFO L274 CegarLoopResult]: For program point L175(lines 175 277) no Hoare annotation was computed. [2020-11-28 02:59:39,269 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:59:39,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:59:39 BoogieIcfgContainer [2020-11-28 02:59:39,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:59:39,289 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:59:39,289 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:59:39,290 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:59:39,290 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:34" (3/4) ... [2020-11-28 02:59:39,293 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:59:39,305 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 02:59:39,306 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:59:39,306 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:59:39,307 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:59:39,376 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9094f5b6-ba6b-40ff-b838-eb09b98cea8e/bin/uautomizer/witness.graphml [2020-11-28 02:59:39,376 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:59:39,377 INFO L168 Benchmark]: Toolchain (without parser) took 6281.27 ms. Allocated memory was 121.6 MB in the beginning and 148.9 MB in the end (delta: 27.3 MB). Free memory was 85.4 MB in the beginning and 114.1 MB in the end (delta: -28.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:39,377 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 121.6 MB. Free memory was 91.7 MB in the beginning and 91.7 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:39,378 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.44 ms. Allocated memory is still 121.6 MB. Free memory was 85.1 MB in the beginning and 95.2 MB in the end (delta: -10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:39,378 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.93 ms. Allocated memory is still 121.6 MB. Free memory was 95.2 MB in the beginning and 93.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:39,378 INFO L168 Benchmark]: Boogie Preprocessor took 36.47 ms. Allocated memory is still 121.6 MB. Free memory was 93.1 MB in the beginning and 91.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:39,378 INFO L168 Benchmark]: RCFGBuilder took 586.87 ms. Allocated memory is still 121.6 MB. Free memory was 91.6 MB in the beginning and 67.9 MB in the end (delta: 23.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:39,379 INFO L168 Benchmark]: TraceAbstraction took 5084.04 ms. Allocated memory was 121.6 MB in the beginning and 148.9 MB in the end (delta: 27.3 MB). Free memory was 67.9 MB in the beginning and 119.3 MB in the end (delta: -51.4 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:39,379 INFO L168 Benchmark]: Witness Printer took 86.75 ms. Allocated memory is still 148.9 MB. Free memory was 119.3 MB in the beginning and 114.1 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:39,381 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 121.6 MB. Free memory was 91.7 MB in the beginning and 91.7 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 432.44 ms. Allocated memory is still 121.6 MB. Free memory was 85.1 MB in the beginning and 95.2 MB in the end (delta: -10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.93 ms. Allocated memory is still 121.6 MB. Free memory was 95.2 MB in the beginning and 93.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.47 ms. Allocated memory is still 121.6 MB. Free memory was 93.1 MB in the beginning and 91.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 586.87 ms. Allocated memory is still 121.6 MB. Free memory was 91.6 MB in the beginning and 67.9 MB in the end (delta: 23.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5084.04 ms. Allocated memory was 121.6 MB in the beginning and 148.9 MB in the end (delta: 27.3 MB). Free memory was 67.9 MB in the beginning and 119.3 MB in the end (delta: -51.4 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. * Witness Printer took 86.75 ms. Allocated memory is still 148.9 MB. Free memory was 119.3 MB in the beginning and 114.1 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((0 <= main__j && main__j + 5 <= main__bufsize) && 0 <= main__i) && main__i < main__len) && main__limit + 4 <= main__bufsize - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((((main__j == 0 && 0 <= main__i) && main__i < main__len) && main__limit + 4 <= main__bufsize) || (((((main__j + 4 <= main__bufsize && 1 <= main__i) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__i)) && 1 <= main__j) && !(__VERIFIER_assert__cond == 0)) && main__limit + 4 <= main__bufsize)) || (((main__j + 4 <= main__bufsize && ((main__j + 4 <= main__bufsize && 1 <= main__i) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__i))) && 1 <= main__j) && main__limit + 4 <= main__bufsize) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 0 <= main__i && main__limit + 4 <= main__bufsize - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 883 SDtfs, 1261 SDslu, 715 SDs, 0 SdLazy, 912 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 436 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 25 NumberOfFragments, 109 HoareAnnotationTreeSize, 4 FomulaSimplifications, 233044656 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 4 FomulaSimplificationsInter, 253791 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 9440 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 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 correct! Received shutdown request...